MicroTech Absorption Chiller - daikinapplied.com · Proprietary Information - Subject to Change McQuay International MicroTech Absorption Chiller Open Protocol Data Information 4

Open Protocol Data Information Packet Version 2.0

Group: Controls

Date: January 1998

© 2002 McQuay International

MicroTech®

Absorption Chiller

Open Protocol™ Data Communications

Proprietary Information - Subject to Change McQuay International

MicroTech Absorption Chiller Open Protocol Data Information 2

- C O N F I D E N T IA L -

This Document may not becopied or reproduced in any

way without the expresswritten consent of McQuay

International.

NOTICE

Copyright 1994,1998McQuay International,

Minneapolis MN

All rights reservedthroughout the world.

McQuay Internationalreserves the right to changeany information containedherein without prior notice.

No guarantees are given as tothe accuracy of information

provided.

McQuay International Proprietary Information - Subject to Change

3 MicroTech Absorption Chiller Open Protocol Data Information

ContentsRevision History ................................................................................................................................... 3This is the first release. All information is new.Overview................................................3Purpose.................................................................................................................................................. 4MicroTech Absorption Gateway ..........................................................................................5Purpose.................................................................................................................................................. 5Components .......................................................................................................................................... 5Connecting to the MicroTech Absorption Gateway ............................................................................. 5Converting between a Direct Connect and a Network MAG................................................................ 5Diagnostic Variables ............................................................................................................................. 6McQuay Absorption Chiller Variables .................................................................................8Memory Map......................................................................................................................................... 8Analog Data .......................................................................................................................................... 8Digital Input Data................................................................................................................................ 10Digital Output Data ............................................................................................................................. 14SW3 Status.......................................................................................................................................... 16Start/Stop Data .................................................................................................................................... 17Operating Time (Hours)...................................................................................................................... 17Operating Time (Minutes/Seconds) .................................................................................................... 18ID Code/PID Sampling/Data Pointer(s).............................................................................................. 19Data Setting......................................................................................................................................... 21Alarm Data.......................................................................................................................................... 23Glossary of Terms ...............................................................................................................39Index .....................................................................................................................................40

Revision HistoryRevisionsVersion 2.0Removed Network and Gateway diagrams which are now available in CD 573875Y, Open ProtocolCertified Drawings.

Version 1.5This version includes the LC type absorption chiller unit.

Version 1.1This is a formatting revision.

Version 1.0This is the first release. All information is new.Overview



Purpose

The purpose of the McQuay International Open Protocol for McQuay absorption chillers is toallow other automation integrators the ability to communicate with a McQuay absorption chiller.Communications will be established through a MicroTech interface panel that will communicatewith the McQuay Absorption Chiller. This interface panel is called the MicroTech AbsorptionGateway (MAG). Licensed BAS companies will be allowed to communicate with the MAG toretrieve information about the McQuay absorption chiller via Open Protocol. The results of Open Protocol can be summarized as follows:

Reading of the following Analog Information• Chilled Water Inlet & Outlet Temperatures• Hot Water Inlet & Outlet Temperatures• Low & High Temperature Generator Temperatures• Cooling Water Inlet & Outlet Temperatures• Condensation Temperature• Remote Reset Setting• Exhaust Gas Temperature/Steam Condensate Temperature• Fuel Control Valves 1 & 2 Position• Inverter Output Signal• Steam Control Valve Output Signal

Reading of the following Digital Output Information• Absorbent Solution Pumps• Refrigerant Pump• Ignition Signal• Heating, Cooling, Simultaneous, and Alarm Indicators• SVRP and SVRU valves• Cooling Main / Heating Main

Reading of the following Digital Input Information• Alarms• Starts/Stops of pumps and blowers• Combustion Signal• Remote Start/Stop Signal

Access to the absorption



MicroTech Absorption Gateway

PurposeThe purpose of the MicroTech Absorption Gateway (MAG) is to read data from the McQuayabsorption chiller and store it so that automation integrators can read the status of the McQuayabsorption chiller. The automation integrators will get their data from the MAG and not directlyfrom the McQuay absorption chiller. The MAG continuously updates its information about thestatus of the McQuay absorption chiller. All data from the MAG that comes directly from theMcQuay absorption chiller is read only; no data point can be changed through Open Protocol.

Components This section will be used to explain the MAG hardware components. The components needed willdepend upon the number of McQuay chillers. A MAG that is in a network of two or more McQuayAbsorption Gateways and an OPM Panel will be referred to as a "Network MicroTech AbsorptionGateway." A MAG that is not in a network with an OPM Panel and other MAGs will be referred toas "Direct Connect MicroTech Absorption Gateway". The generic name of "MicroTech AbsorptionGateway " (“MAG”) will be used when describing features that are common to both the NetworkMAG and the Direct Connect MAG.

Connecting to the MicroTech Absorption GatewayNetwork MAGA Network MAG will be used whenever an Open Protocol Master (OPM) Panel is used. The OPMprovides a single communications port entry into a MicroTech network. The OPM consists of anEnergyLine model 120 controller. The automation integrator at a licensed BAS company connects toComm Port A of the OPM, which is preconfigured for Open Protocol communications at 9600 baud.Comm Port B of the OPM is a daisy chained, multidrop, 9600 baud, RS-485, proprietary McQuayInternational Protocol Port. Comm Port B of the OPM will be connected to a MicroTech network.The only way to read information from a Network MAG is through an OPM Panel. Directconnection to a Network MAG is not possible because Comm Port B is configured for SLAVE, 9600baud and Comm Port A, which is dedicated to receiving data from the McQuay absorption chiller, isconfigured as USER, 4800 baud.

Direct Connect MAGA Direct Connect MAG can be used whenever a single McQuay absorption chiller is used with OpenProtocol. A Direct Connect MAG cannot be used with an OPM Panel or in a MicroTech network.A Direct Connect MAG’s Comm Port A is used to communicate with the automation integrator, andComm Port B is used to communicate with the Absorption Chiller Controller. Comm Port A, whichis the automation control integrator's Open Protocol communications port, is preconfigured for TTY,Open Protocol communications at 9600 baud. Comm Port B, which is dedicated to receiving datafrom the McQuay absorption chiller, is configured for USER, 4800 baud.

Converting between a Direct Connect and a Network MAGOverviewConverting from either a Direct Connect MAG to a Network MAG or a Network MAG to a DirectConnect MAG is done by downloading controller code to the MAG. In either case, monitor packagewill be used to make the conversion.

The Network MAGConnect MAG each co

c



Direct Connect MAG to a Network MAGThe Direct Connect MAG can be direct connected to through its Comm Port A. Once NetworkMAG controller code has been downloaded, the communications lines must be changed and itsaddress changed to the location the controller will occupy in the MicroTech network. Thecommunications line that is connected to the Absorption Unit Controller must be moved from CommPort B to Comm Port A on the Network MAG.

Network MAG to a Direct Connect MAGThe only way to direct connect to a Network McQuay Gateway is to change the controller address toFF and reset power. This will change Comm Port B to 9600 baud TTY and direct connection will bepossible. During this time, communications with the McQuay absorption chiller will be lost. OnceDirect Connect MAG controller code has been downloaded, the communications lines must bechanged and the address set to 00. The communications line that is connected to the Absorption UnitController must be moved from Comm Port A to Comm Port B on the Direct Connect MAG.

OPM

Network Network MAG

Comm Port B

Comm Port B

McQuay

Comm Port A

Network Sanyo Gateway

TCCommDevice

Comm Port A

Comm Port B

Direct Connect SanyoGateway

Communications Line to Change

MAG

Absorption Chiller

McQuayAbsorption Chiller Chiller

AbsorptionMcQuay

MAG

DirectConnect

Diagnostic VariablesFollowing is a list of diagnostic memory locations that can be read in the MAG.

Description Address Range Conversion

Communications Check Output 0700 0-255 See Below

Sending or Receiving Data Output 0701 0-255 See Below

Processing Data Output 0702 0-255 See Below

Processing Alarm Data Output 0703 0-255 See Below

Communications Error 040D 0, 1 0= OK1 = CommError



Communications Check Output 0700This is the memory location that contains the status of digital output 0. A 0 indicates the output is offand a 1-255 indicates the output is on. This output is on for one second and off for one second ifcommunications exist between the MAG and the Absorption Unit Controller. The output is on fortwo-tenths of a second and off for two-tenths of a second if communications do not exist between theMAG and the Absorption Unit Controller. This location is a countdown timer for how long theoutput has left to be on. If the location has a value of 9, the output has nine-tenths of a second left tobe on. A value of 0 means that the output is off.

Sending or Receiving Data Output 0701This is the memory location that contains the status of digital output 1. A 0 indicates the output is offand a 1-255 indicates the output is on. This output is on if the MAG is either sending or receivingdata to or from the Absorption Unit Controller. This output is off if the MAG is not communicatingwith the Absorption Unit Controller. This output cycles off and on as the MAG communicates withor processes data from the Absorption Unit Controller. When this output is on, the Processing Dataand Processing Alarm Data Outputs will be off. The MAG will either communicate with or processdata from the Absorption Unit Controller. Communication and processing will not occur at the sametime.

Processing Data Output 0702This is the memory location that contains the status of digital output 2. A 0 indicates that output isoff and a 1-255 indicates the output is on. This output is on when the MAG is processing non-alarmdata it has received from the Absorption Unit Controller. Alarm data processing is indicated byanother output. This output is off if the MAG is not processing data from the Absorption UnitController. This output cycles off and on as the MAG communicates with or processes data from theAbsorption Unit Controller. When this output is on, the Sending or Receiving Data and ProcessingAlarm Data Outputs will be off. The MAG will either communicate with or process data form theAbsorption Unit Controller. Communication and processing will not occur at the same time.

Processing Alarm Data Output 0703This is the memory location that contains the status of digital output 3. A 0 indicates that output isoff and a 1-255 indicates the output is on. This output is on when the MAG is processing alarm datait has received from the Absorption Unit Controller. Non-alarm data processing is indicated byanother output. This output is off if the MAG is not processing alarm data from the Absorption UnitController. This output cycles off and on as the MAG communicates with or processes data from theAbsorption Unit Controller. When this output is on, the Sending or Receiving Data and ProcessingData Outputs will be off. The MAG will either communicate with or process data form theAbsorption Unit Controller. Communication and processing will not occur at the same time.



McQuay Absorption Chiller Variables

Memory MapAll of these memory locations are in the MAG. All of the following memory locations are inhexadecimal notation. Memory location 1342 will actually be $1342 (Hexadecimal memorylocation 1342).

Table Heading DefinitionsDescription - This is the terminology used to describe the data point.Address - This is the memory location(s) that holds the information for the data point.Range - This can contain either a description of the address locations or a numerical range the

location(s) will contain.Conversion - This is how the raw data needs to be converted to get the correct data reading.DCH - If this area contains an "X", this data point is applicable for DC-H units.DCS - If this area contains an "X", this data point is applicable for DC-S units.DCU - If this area contains an "X", this data point is applicable for DC-U units.NCU - If this area contains an "X", this data point is applicable for NC-U units.LCU - If this area contains an "X", this data point is applicable for LC-U units.

Analog DataDescription Address Range Units D

CH

DCS

DCU

NCU

LCU

Chilled Water Inlet Temperature(Only while in Cooling orSimultaneous units)

11B211B3

Hi ByteLo Byte

0.1*X+0=°F X X X X X

Chilled Water Outlet Temperature(Only while in Cooling orSimultaneous units)

11B011B1

Hi ByteLo Byte

0.1*X+0=°F X X X X X

Condensed Refrigerant Temperature 11C211C3

Hi ByteLo Byte

0.1*X+0=°F X X X X X

Cooling Water Inlet Temperature 11BE11BF

Hi ByteLo Byte

0.1*X+0=°F X X X X X

Cooling Water Outlet Temperature 11C011C1

Hi ByteLo Byte

0.1*X+0=°F X X X X X

Exhaust Gas Temperature (DC-*) orSteam Condensate Temperature(NC-U)

11C611C7

Hi ByteLo Byte

0.1*X+0=°F X X X X

Fuel Control Valve 1 (%) 119A119B

Hi ByteLo Byte

0.1*X+0=% X X X

Fuel Control Valve 2 (%) 119C119D

Hi ByteLo Byte

0.1*X+0=% X

High Temperature GeneratorTemperature

11C411C5

Hi ByteLo Byte

0.1*X+0=°F X X X X X

Hot Water Inlet Temperature (Only while in Heating)

11B811B9

Hi ByteLo Byte

0.1*X+0=°F X



Description Address Range Units DCH

DCS

DCU

NCU

LCU

Hot Water Inlet Temperature (Onlyfor DC-S & DC-H units)

11BA11BB

Hi ByteLo Byte

0.1*X+0=°F X X

Hot Water Outlet Temperature(Only while in Heating)

11B411B5

Hi ByteLo Byte

0.1*X+0=°F X

Hot Water Outlet Temperature(Only for DC-S & DC-H units)

11B611B7

Hi ByteLo Byte

0.1*X+0=°F X X

Invertor Output Signal 119E 0-200 0.303*X+0 =Hz X X X X X

Low Temperature GeneratorTemperature

11BC11BD

Hi ByteLo Byte

0.1*X+0=°F X X X X

Remote Reset Current Signal 11961197

Hi ByteLo Byte

0.1*X+0=mA X X X X X

Steam Control Valve Output Signal 11E011E1

Hi ByteLo Byte

0.1*X+0=% X X

Chilled Water Inlet Temperature 11B2,11B3This is the Chilled Water Inlet Temperature. These locations contain valid data only when theChiller/Heater is in the cooling mode or in the Simultaneous mode. This location is read by formingthe high byte (11B2) and the low byte (11B1) into a two byte number and dividing by 10 (0.1 * X +0 = °F).

Chilled Water Outlet Temperature 11B0,11B1This is the Chilled Water Outlet Temperature. These locations contain valid data only when theChiller/Heater is in the cooling mode or Simultaneous mode. These locations are read by formingthe high byte (11B0) and the low byte (11B1) into a two byte number and dividing by 10 (0.1 * X +0 = °F).

Condensed Refrigerant Temperature 11C2,11C3This is the Condensed Refrigerant Temperature. These locations are read by forming the high byte(11C2) and the low byte (11C3) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Cooling Water Inlet Temperature 11BE,11BFThis is the Cooling Water Inlet Temperature. These locations are read by forming the high byte(11BE) and the low byte (11BF) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Cooling Water Outlet Temperature 11C0,11C1This is the Cooling Water Outlet Temperature. These locations are read by forming the high byte(11C0) and the low byte (11C1) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Exhaust Gas Temperature/Steam Condensate Temperature 11C6,11C7This is the Exhaust Gas (DC-H, DC-S, DC-U) or Steam Condensate Temperature (NC-U). Thislocation is the Exhaust Gas Temperature for DC units or the Steam Condensate Temperature for NCunits. These locations are read by forming the high byte (11C6) and the low byte (11C7) into a twobyte number and dividing by 10 (0.1 * X + 0 = °F).

Fuel Control Valve 1 Output Signal 119A,119BThis is the Fuel Control Valve 1 Feedback Signal. These locations are read by forming the high byte(119A) and the low byte (119B) into a two byte number and dividing by 10 (0.1 * X + 0).

Fuel Control Valve 2 Output Signal 119C,119DThis is the Fuel Control Valve 2 Feedback Signal. These locations are applicable on Simultaneousunits only (DC-S). These locations are read by forming the high byte (119C) and the low byte(119D) into a two byte number and dividing by 10 (0.1 * X + 0).

High Temperature Generator Temperature 11C4,11C5This is the High Temperature Generator Temperature. These locations are read by forming the highbyte (11C4) and the low byte (11C5) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).



Hot Water Inlet Temperature 11B8,11B9This is the Hot Water Inlet Temperature for DC-U units. These locations contain valid data onlywhen the Chiller/Heater is in the heating mode. These locations are read by forming the high byte(11B8) and the low byte (11B9) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Hot Water Inlet Temperature 11BA,11BBThis is the Hot Water Inlet Temperature. These locations are valid only for SimultaneousChiller/Heater units (DC-S) and Hot Water units (DC-H). These locations are read by forming thehigh byte (11BA) and the low byte (11BB) into a two byte number and dividing by 10 (0.1 * X + 0= °F).

Hot Water Outlet Temperature 11B4,11B5This is the Hot Water Outlet Temperature for DC-U units. These locations contain valid data onlywhen the Chiller/Heater is in the heating mode. These locations are read by forming the high byte(11B4) and the low byte (11B5) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Hot Water Outlet Temperature 11B6,11B7This is the Hot Water Outlet Temperature. These locations are valid only for SimultaneousChiller/Heater units (DC-S) and Hot Water units (DC-H). These locations are read by forming thehigh byte (11B6) and the low byte (11B7) into a two byte number and dividing by 10 (0.1 * X + 0 =°F).

Invertor Output Signal 119EThis is the output signal to the Invertor. This location is read by taking byte 119E and dividing by3.3 (.30303 * X + 0 = Hz)

Low Temperature Generator Temperature 11BC,11BDThis is the Low Temperature Generator Temperature. These locations are read by forming the highbyte (11BC) and the low byte (11BD) into a two byte number and dividing by 10 (0.1 * X + 0 = °F)

Remote Reset Current Signal 1196,1197This is the Remote Reset Current Signal from the BAS company. This is used to offset from theheating or cooling setpoint, depending on the mode of the Chiller/Heater unit. These locations areread by forming the high byte (1196) and the low byte (1197) into a two byte number and dividingby 10 (0.1 * X + 0 = mA).

Steam Control Valve Output Signal 11E0,11E1This is the output signal to the Steam Control Valve. This is only applicable on NC-U units. Theselocations are read by forming the high byte (11E0) and the low byte (11E1) into a two byte numberand dividing by 10 (0.1 * X + 0 = %).

Digital Input DataDescription Address Range Units D

CH

DCS

DCU

NCU

LCU

Absorbent Pump 1 or Invertor(Alarm)

1281BIT 1

0=Normal1=Alarm X X X X

X

Absorbent Pump 1 (Off/On) 1282BIT 7

0=Off1=On X X X X X

Absorbent Pump 2 (Alarm) 1281BIT 2

0=Normal1=Alarm X X X X X


0=Off1=On X X X X X




DCS

DCU

NCU

LCU

Auto Restart after PowerFailure

1280BIT 3

0=Disabled1=Enabled X X X X

Burner Signal 1280BIT 0

0=Off1=On X X X

Chilled Water Flow Rate 1282BIT 4

0=NoFlow1=Flow X X X X X

Chilled Water Pump Interlock 1281BIT 7

0=Open 1=ClosedX X X X X

Control Valve 1(DC-* units)

1280BIT 7

0=Auto 1=ManualX X X

Control Valve 1(Automatic) (NC-U)

1284BIT 0

0=Not in Auto1= Auto X X

Control Valve 1(Manual Close) (NC-U)

1284BIT 1

0=Not Mnl Close1= Mnl Close X

Control Valve 1(Manual Open) (NC-U)

1284BIT 3

0=Not Mnl Open1=Mnl Open X

Control Valve 1(Manual Stop) (NC-U)

1284BIT 2

0=Not Mnl Stop1= Mnl Stop X

Control Valve 2 1281BIT 0

0=Auto 1=ManualX

Cooling Mode 1280BIT 4

0=No Cooling1=Cooling X X X X X

Cooling Water Flow Rate 1282BIT 6

0=NoFlow1=Flow X X X X X

Cooling Water Pump Interlock 1282BIT 1

0=Open 1=ClosedX X X X X

Flame Failure 1283BIT 5

0=Normal1=Alarm X X X

Heating Mode 1280BIT 5

0=No Heating1=Heating X X X

High Temperature GeneratorLow Solution Level

1280BIT 2


High Temperature GeneratorPressure

1282BIT 3


Hot Water Pump Interlock 1282BIT 0

0=Open 1=ClosedX X

Purge Pump 1283BIT 2

0=Off1=On X X X X




DCS

DCU

NCU

LCU

Refrigerant Pump (Alarm) 1281BIT 6


Refrigerant Pump (Off/On) 1283BIT 4

0=Off1=On X X X X X

Remote Start/Stop Signal 1 1284BIT 6

0=Stop1=Start X X X X X

Simultaneous Mode 1280BIT 6

0=No Simul1=Simul X

Absorbent Pump 1 or Invertor (Alarm) 1281, BIT 1This is the alarm status of Absorbent Pump 1 or the Invertor. A 0 indicates normal operation and a 1indicates an alarm condition.

Absorbent Pump 1 (Off/On) 1282, BIT 7This is the off/on status of Absorption Pump 1. A 0 indicates the pump is off and a 1 indicates thepump is on.

Absorbent Pump 2 (Alarm) 1281, BIT 2This is the alarm status of Absorbent Pump 2. A 0 indicates normal operation and a 1 indicates analarm condition.

Absorbent Pump 2 (Off/On) 1283, BIT 0This is the off/on status of Absorption Pump 2. A 0 indicates the pump is off and a 1 indicates thepump is on.

Auto Restart after Power Failure 1280, BIT 3This is the status of the Auto Restart after Power Failure. A 0 indicates the Auto Restart after PowerFailure is disabled and a 1 indicates that it is enabled.

Burner Signal 1280, BIT 0This is the off/on signal of the Burner Signal for DC units. A 0 indicates an off signal and a 1indicates an on signal.

Chilled Water Flow Rate 1282, BIT 4This is the status of the Chilled Water Flow Rate switch. A 0 indicates no flow and a 1 indicatesflow.

Chilled Water Pump Interlock 1281, BIT 7This is the status of the Chilled Water Pump Interlock. A 0 indicates an open interlock and a 1indicates a closed interlock.

Control Valve 1 1280, BIT 7This is the auto/manual status of Control Valve 1 for DC units (DC-*). A 0 indicates Auto mode anda 1 indicates Manual Mode.

Control Valve 1 (Automatic) 1284, BIT 0This is the Automatic control of Control Valve 1 for Steam units (NC-U). A 0 indicates the controlvalve is not in the automatic mode and a 1 indicates the control valve is in the automatic mode.

Control Valve 1 (Manual Close) 1284, BIT 1This is the Manual Close control of Control Valve 1 for Steam units (NC-U). A 0 indicates thecontrol valve is not in the manual close mode and a 1 indicates the control valve is in the manualclose mode.



Control Valve 1 (Manual Open) 1284, BIT 3This is the Manual Open control of Control Valve 1 for Steam units (NC-U). A 0 indicates thecontrol valve is not in the manual open mode and a 1 indicates the control valve is in the manualopen mode.

Control Valve 1 (Manual Stop) 1284, BIT 2This is the Manual Stop control of Control Valve 1 for Steam units (NC-U). A 0 indicates thecontrol valve is not in the manual stop mode and a 1 indicates the control valve is in the manual stopmode.

Control Valve 2 1281, BIT 0This is the auto/manual status of Control Valve 2. This location is applicable only for Simultaneousunits (DC-S). A 0 indicates Auto mode and a 1 indicates Manual mode.

Cooling Mode 1280, BIT 4This indicates the unit is in the Cooling mode. A 0 indicates that chiller is not in Cooling and a 1indicates that the unit is in Cooling.

Cooling Water Flow Rate 1282, BIT 6This is the status of the Cooling Water Flow Rate. A 0 indicates no flow and a 1 indicates flow.

Cooling Water Pump Interlock 1282, BIT 1This is the status of the Cooling Water Pump Interlock. A 0 indicates an open interlock and a 1indicates a closed interlock.

Flame Failure 1283, BIT 5This is the alarm status of the Flame Failure for DC units. A 0 indicates normal operation and a 1indicates an alarm condition.

Heating Mode 1280, BIT 5This indicates the unit is in the Heating mode. A 0 indicates that chiller is not in Heating and a 1indicates that the unit is in Heating.

High Temperature Generator Low Solution Level 1280, BIT 2This is the alarm status of the Low Solution Level in the High Temperature Generator for DC units.A 0 indicates normal operation and a 1 indicates an alarm condition.

High Temperature Generator Pressure 1282, BIT 3This is the alarm status of the High Temperature Generator Pressure. A 0 indicates normal operationand a 1 indicates an alarm condition.

Hot Water Flow Rate 1282, BIT 5This is the status of the Hot Water Flow Rate for Simultaneous units (DC-S) and Hot Water units(DC-H). A 0 indicates no flow and a 1 indicates flow.

Hot Water Pump Interlock 1282, BIT 0This is the status of the Hot Water Pump Interlock. A 0 indicates an open interlock and a 1 indicatesa closed interlock.

Purge Pump 1283, BIT 2This is the off/on status of the Purge Pump. A 0 indicates the pump is off and a 1 indicates thepump is on.

Refrigerant Pump (Alarm) 1281, BIT 6This is the alarm status of the Refrigerant Pump. A 0 indicates normal operation and a 1 indicates analarm condition.

Refrigerant Pump (Off/On) 1283, BIT 4This is the off/on status of the Refrigerant Pump. A 0 indicates the pump is off and a 1 indicates thepump is on.

Remote Start/Stop Signal 1 1284, BIT 6This is the first of the start/stop signals. This is the input that will be used for remote start/stop of thechiller. A 0 indicates a stop signal and a 1 indicates a start signal.



Simultaneous Mode 1280, BIT 6This indicates the unit is in the Simultaneous mode. A 0 indicates that chiller is not in Simultaneousand a 1 indicates that the unit is in Simultaneous mode.

Digital Output DataDescription Address Range Units

DCH

DCS

DCS

NCU

LCU

Absorbent Pump 1 1286BIT 1

0=Disabled1=Enabled

X X X X X

Absorbent Pump 2 1286BIT 2

0=Off 1=On X X X X

Alarm Indication 1285BIT 2

0=No Alm1=Alarm

X X X X X

Answer Back Signal 1287BIT 4

0=Off 1=On X X X X X

Burner Controller Signal 1286BIT 5

0=Disabled1=Enabled

X X X


0=Off 1=On X X X

Chilled and/or Hot Water PumpSignal

1287BIT 6


Cooling Main/Heating Main 1285BIT 4

0=Htg 1=Clg X

Cooling Mode Indication 1287BIT 7


Cooling Water Pump Signal 1287BIT 5


Fuel Input Valve/Cooling MainMode (Close)

1287BIT 1

0=Off 1=On X X X X

Fuel Input Valve/Cooling MainMode (Open)

1287BIT 0

0=Off 1=On X X X X

Fuel Input Valve/Heating Main Mode(Close)

1287BIT 3

0=Off 1=On X

Fuel Input Valve/Heating Main Mode(Open)

1287BIT 2

0=Off 1=On X

Heating Mode Indication 1285BIT 0

0=Off 1=On X X X

Operation Indication 1286BIT 0


Refrigerant Pump AutomaticFunction

1286BIT 3

0=Disabled1=Enabled

X X X X X

Refrigerant Pump Manual Function 1286BIT 4

0=Disabled1=Enabled

X X X X X

Simultaneous Mode Indication 1285BIT 1

0=Off 1=On X

SVRP valve (open/close) 1285BIT 3

0=Off 1=On X

SVRU valve (open/close) 1286BIT 7

0=Off 1=On X



Absorbent Pump 1 1286, BIT 1This is the enable/disable signal to Absorbent Pump 1. A 0 indicates an the pump is disabled and a1 indicates the pump is enabled.

Absorbent Pump 2 1286, BIT 2This is the status of the on/off signal to Absorbent Pump 2. A 0 indicates an the pump is off and a 1indicates the pump is on.

Alarm Indication 1285, BIT 2This is the status of the Alarm Indication. A 0 indicates normal (no alarm) operation and a 1indicates an alarm condition.

Answer Back Signal 1287, BIT 4This is the status of the Answer Back Signal. This is used to confirm a start signal that has beenaccepted. A 0 indicates an off condition and a 1 indicates a start or running condition.

Burner Controller Signal 1286, BIT 5This is the status of the Burner Controller Signal. This is used to prevent burner operation in analarm condition. A 0 indicates either an off or alarm condition (disabled) and a 1 indicates that theburner is able to operate normally (enabled).

Burner Signal 1286, BIT 6This is the output to the Burner Controller. This location is applicable only for DC units. A 0indicates an off signal and a 1 indicates an on signal.

Chilled and/or Hot Water Pump Signal 1287, BIT 6This is the status of the Chilled and/or the Hot Water Pump Signal. A 0 indicates a pump off signaland a 1 indicates a pump on signal.

Cooling Main/Heating Main 1285, BIT 4This is the status of the Cooling Main/Heating Main indication output. This location is applicableonly for Simultaneous units (DC-S). A 0 indicates the unit is in heating main and a 1 indicates thatthe unit is in cooling main.

Cooling Mode Indication 1287, BIT 7This is the status of the Cooling Mode Output. A 0 indicates the unit is not in the Cooling mode anda 1 indicates the unit is in the Cooling mode. This output is used as an indicator to remote systems.

Cooling Water Pump Signal 1287, BIT 5This is the status of the Cooling Water Pump Signal. A 0 indicates a pump off signal and a 1indicates a pump on signal.

Fuel Input Valve/Cooling Main Mode (Close) 1287, BIT 1This is the status of the Fuel Input Valve/Cooling Main Mode close output. A 0 indicates the valveis not closing (off) and a 1 indicates the valve is closing (on).

Fuel Input Valve/Cooling Main Mode (Open) 1287, BIT 0This is the status of the Fuel Input Valve/Cooling Main Mode open output. A 0 indicates the valve isnot opening and a 1 indicates the valve is opening.

Fuel Input Valve/Heating Main Mode (Close) 1287, BIT 3This is the status of the Fuel Input Valve/Heating Main Mode close output. This location isapplicable only for Simultaneous units (DC-S). A 0 indicates the valve is not closing (off) and a 1indicates the valve is closing (on).

Fuel Input Valve/Heating Main Mode (Open) 1287, BIT 2This is the status of the Fuel Input Valve/Heating Main Mode open output. This location isapplicable only for Simultaneous units (DC-S). A 0 indicates the valve is not opening (off) and a 1indicates the valve is opening (on).

Heating Mode Indication 1285, BIT 0This is the status of the Heating Mode Output. This location is applicable only for DC units. A 0indicates the unit is not in the Heating mode and a 1 indicates the unit is in the Heating mode. Thisoutput is used as an indicator to remote systems.



Operation Indication Contact 1286, BIT 0This is the status of the chiller. A 0 indicates the unit is off and a 1 indicates the unit is on evenduring the dilution cycle.

Refrigerant Pump Automatic Function 1286, BIT 3This is the automatic start/stop of the Refrigerant Pump. A 0 indicates the automatic function isdisabled and a 1 indicates the automatic function is enabled.

Refrigerant Pump Manual Function 1286, BIT 4This is the manual start/stop mode of the Refrigerant Pump. A 0 indicates the manual function isdisabled and a 1 indicates the manual function is enabled. The microprocessor can still stop thepump while in the Manual Start mode.

Simultaneous Mode Indication 1285, BIT 1This is the status of the Simultaneous Mode Output. This location is applicable only forSimultaneous units (DC-S). A 0 indicates the unit is not in the Simultaneous mode and a 1 indicatesthe unit is in the Simultaneous mode. This output is used as an indicator to remote systems.

SVRP Valve 1285, BIT 3This valve is used for simultaneous chiller/heaters to drain refrigerant from the condenser sump.

SVRU Valve 1286, BIT 7This valve is used for simultaneous chiller/heaters to drain refrigerant from the evaporator sump.

SW3 StatusDescription Address Range Units DC

HDC

SDC

UNC

ULC

U

Unit Model Type 1381BITS 0-3

See longdescription forModel Types

Model Type X X X X X

The following is a diagram of the layout of the SW3 switches:

10 þÿ Clock Speed9 þÿ Data Sampling Time8 þÿ Undefined7 þÿ Remote Signal Polarity6 þÿ Remote Start/Stop5 þÿ Controller System4 þÿ Unit Type (BIT 3)3 þÿ Unit Type (BIT 2)2 þÿ Unit Type (BIT 1)1 þÿ Unit Type (BIT 0) Off On

Unit Model Type 1381, BITS 0-3These bits are used to determine the Model Type to the chiller. The following show the relationshipbetween bit settings and model types:

BIT 0 BIT 1 BIT 2 BIT 3 Model0 0 0 0 DC-S or DC-H (Gas Fired)1 0 0 0 DC-S or DC-H (Oil Fired)0 1 0 0 DC-U (Gas Fired)1 1 0 0 DC-U (Oil Fired) 0 0 1 0 DC-U without heating mode (Gas)1 0 1 0 DC-U without heating mode (Oil)0 1 1 0 TC-U1 1 1 0 NC-U



BIT 0 BIT 1 BIT 2 BIT 3 Model0 0 0 1 TC-U for heavy duty1 0 0 1 NC-U for heavy duty0 1 0 1 LC-U1 1 0 1 LC-U for heavy duty

Start/Stop DataDescription Address Range Units DC

HDC

SDCU

NCU

LCU

Absorbent Pump 1 1488-148B Highest Byte-Lowest Byte

BCD X X X X X

Burner 1484-1487 Highest Byte-Lowest Byte

BCD X X X

Refrigerant Pump 148C-148F Highest Byte-Lowest Byte

BCD X X X X X

Unit 1480-1483 Highest Byte-Lowest Byte

BCD X X X X X

Absorbent Pump 1 1488-148BThis is the amount of Absorbent Pump 1 starts and stops. This number is recorded in BCD format.Byte 1488 is the highest byte of the BCD string and byte 148B is the lowest byte of the BCD string.This is a literal string, no conversion is needed to read the Start/Stop Data. The following willillustrate this:

Byte 1488 1489 148A 148B00 00 15 76This translates to 1576 Starts/Stops.

BCD = Binary Coded Decimal

Burner 1484-1487This is the amount of starts and stops of the Burner. These locations are applicable only for DCunits. This number is recorded in BCD format. Byte 1484 is the highest byte of the BCD string andbyte 1487 is the lowest byte of the BCD string. The starts/stops are read the same way as thestarts/stops for Absorbent Pump 1.

Refrigerant Pump 148C-148FThis is the amount of Refrigerant Pump starts and stops. This number is recorded in BCD format.Byte 148C is the highest byte of the BCD string and byte 148F is the lowest byte of the BCD string.The starts/stops are read the same way as the starts/stops for Absorbent Pump 1.

Unit 1480-1483This is the amount of Chiller/Heater unit starts and stops. This number is recorded in BCD format.Byte 1480 is the highest byte of the BCD string and byte 1483 is the lowest byte of the BCD string.The starts/stops are read the same way as the starts/stops for Absorbent Pump 1.

Operating Time (Hours)Description Address Range Units D

CH

DCU

DCS

NCU

LCU

Absorbent Pump 1 Operation 1588-158B

Highest Byte-Lowest Byte

BCD X X X X X




DCU

DCS

NCU

LCU

Burner Operation 1584-1587 Highest Byte-Lowest Byte

BCD X X X

Refrigerant Pump Operation 158C-158F Highest Byte-Lowest Byte

BCD X X X X X

Unit Operation 1580-1583 Highest Byte-Lowest Byte

BCD X X X X X

Absorbent Pump 1 Operation 1588-158BThis is the amount of Absorbent Pump 1 operating hours. This number is recorded in BCD format.Byte 1588 is the highest byte of the BCD string and byte 158B is the lowest byte of the BCD string.This is a literal string, no conversion is needed to read the Operating Time (Hours). The followingwill illustrate this:

Byte 1488 1489 148A 148B00 05 32 48This translates to 53,248 hours.


Burner Operation 1584-1587This is the amount of Burner operating hours. These locations are applicable only for DC units.This number is recorded in BCD format. Byte 1480 is the highest byte of the BCD string and byte1483 is the lowest byte of the BCD string. The operating hours are read the same way as theoperating hours for Absorbent Pump 1.

Refrigerant Pump Operation 158C-158FThis is the amount of Refrigerant Pump operating hours. This number is recorded in BCD format.Byte 1480 is the highest byte of the BCD string and byte 1483 is the lowest byte of the BCD string.The operating hours are read the same way as the operating hours for Absorbent Pump 1.

Unit Operation 1580-1580This is the amount of Chiller/Heater unit operating hours. This number is recorded in BCD format.Byte 1480 is the highest byte of the BCD string and byte 1483 is the lowest byte of the BCD string.The operating hours are read the same way as the operating hours for Absorbent Pump 1.

Operating Time (Minutes/Seconds)Description Address Range Units D

CH

DCS

DCU

NCU

LCU

Absorbent Pump 1 Operation 1684-1685 Hi Byte LoByte

In Seconds X X X X X

Burner Operation 1682-1683 Hi Byte LoByte

In Seconds X X X

Refrigerant Pump Operation 1686-1687 Hi Byte LoByte


Unit Operation 1680-1681 Hi Byte LoByte




Absorbent Pump 1 Operation 1684-1685This is the operating minutes and seconds of Absorbent Pump 1. This works with the OperatingHours of Absorbent Pump 1 to present the total operating time of Absorbent Pump 1. Memorylocation 1684 represents the high byte and memory location 1685 represents the low byte. Thesememory locations store the Operating Time (Minutes and Seconds) in seconds. Therefore, todetermine the Operating Time (Minutes and Seconds), divide the number stored in bytes 1684 and1685 by 60. This will give the Operating Minutes and the remainder will be the Operating Seconds.

Byte 1684 1685$03 $7A

$037A = 890890 / 60 = 14 (minutes), remainder of 50 (seconds)

Burner Operation 1682-1683This is the operating minutes and seconds of the Burner. These locations are applicable only for DCunits. This works with the Operating Hours of the Burner to present the total operating time of theBurner. Memory location 1684 represents the high byte and memory location 1685 represents thelow byte. These memory locations store the Operating Time (Minutes and Seconds) in seconds.Therefore, to determine the Operating Time (Minutes and Seconds), divide the number stored inbytes 1684 and 1685 by 60. This will give the Operating Minutes and the remainder will be theOperating Seconds. See the above example for Absorbent Pump 1 for more details of determiningOperating Time (Minutes and Seconds).

Refrigerant Pump 1686-1687This is the operating minutes and seconds of the Refrigerant Pump. This works with the OperatingHours of the Refrigerant Pump to present the total operating time of the Refrigerant Pump. Memorylocation 1684 represents the high byte and memory location 1685 represents the low byte. Thesememory locations store the Operating Time (Minutes and Seconds) in seconds. Therefore, todetermine the Operating Time (Minutes and Seconds), divide the number stored in bytes 1684 and1685 by 60. This will give the Operating Minutes and the remainder will be the Operating Seconds.See the above example for Absorbent Pump 1 for more details of determining Operating Time(Minutes and Seconds).

Unit Operation 1680-1681This is the operating minutes and seconds of the Chiller/Heater unit. This works with the OperatingHours of the Chiller/Heater unit to present the total operating time of the Chiller/Heater unit.Memory location 1684 represents the high byte and memory location 1685 represents the low byte.These memory locations store the Operating Time (Minutes and Seconds) in seconds. Therefore, todetermine the Operating Time (Minutes and Seconds), divide the number stored in bytes 1684 and1685 by 60. This will give the Operating Minutes and the remainder will be the Operating Seconds.See the above example for Absorbent Pump 1 for more details of determining Operating Time(Minutes and Seconds).

ID Code/PID Sampling/Data Pointer(s)Description Address Range Units DCH DCS DCU NCU LCU

Alarm Pointer 168C See Below X X X X X

PID Sampling 168D 5-30 Seconds X X X X X

Unit Serial Number 1689-168B BCD X X X X X

Alarm Pointer 168CThis location contains the data pointers for the Abnormal (Alarm) Data. The McQuay Controllercontains three alarm buffers. Each of these buffers holds the operating conditions of the chiller whenan alarm condition occurred. These three buffers store the operating conditions in a circular bufferpattern.



Pointers are used to indicate where the next data is to be written to and to indicate that the buffers arefull and the newest data is overwriting the oldest data. The data pointers for the two items are located in byte 168C. The format for these pointers is asfollows:

BIT 7 6 5 4 3 2 1 0BYTE 168C Data Full

FlagPosition for

nextAbnormal

Data

Position fornext

AbnormalData

Position fornext

AbnormalData



The following shows the bit settings/next position to write comparison:BIT 2 1 0

0 0 0 Position 10 1 0 Position 21 0 0 Position 3

When the data full flag is 1 , this indicates that the data has made one complete cycle (all areas havebeen filled) so that the old data will be erased and new data will be written in its place. Example: When the Data Full Flag is 1 and the Data Pointer is 2, it means that the data in position 2is the oldest, the next data after that is in position 3, and the newest data is in position 1. If the Data Full Flag is 0 and the Data Pointer is 2, it means that data has been written to position 1and that positions 2 and 3 are empty.The McQuay Gateway will automatically sort the alarms from newest to oldest. Alarm Data 1 willalways contain the most recent alarm. Alarm Data 2 will contain the previous alarm and Alarm Data3 will contain the oldest alarm data. Therefore, the Alarm Pointer memory location is only used toindicate that a new alarm has occurred. Whenever a new alarm occurs, the Alarm Pointer Memorylocation will change.

PID Sampling 168DThis location contains the sampling rate used for PID control in seconds.

Unit Serial Number 1689-168BThese locations contain the Chiller/Heater unit Serial Number. This number is recorded in BCDformat. Byte 1689 is the highest byte of the BCD string and byte 168B is the lowest byte of the BCDstring. This is a literal string, no conversion is needed to read the Unit Serial Number. Thefollowing will illustrate this:

Byte 1489 148A 148B04 81 37This translates to 048137.


Data SettingDescription Address Range Units

DCH

DCS

DCU

NCU

LCU

Chilled Water D Setpoint (sec) 1D86 0-100X X X X

Chilled Water I Setpoint (sec) 1D85 0-250 10*X+0=Seconds X X X X

Chilled Water P Setpoint (°F) 1D84 20-100 0.1*X+ 0=°FX X X X

Chilled Water Setpoint (°F) 1DB21DB3

Hi ByteLo Byte

0.1*X+0=°FX X X X

Hot Water D Setpoint (sec) 1D89 0-100X X X

Hot Water I Setpoint (sec) 1D88 0-250 10*X+0=Seconds X X X



Description Address Range UnitsDCH

DCS

DCU

NCU

LCU

Hot Water P Setpoint (°F) 1D87 20-100 0.1*X+0=°FX X X

Hot Water Setpoint (°F) 1DB01DB1

Hi ByteLo Byte

0.1*X+0=°FX X X

Rank Up Setting (%) 1D83 50-100X X X X

Chilled Water D Setpoint 1D86This location contains the Chilled Water Derivative Setpoint. Derivative Control adjusts the outputbased on the rate of change of the deviation.

Chilled Water I Setpoint 1D85This location contains the Chilled Water Integral Setpoint. Integral Control adjusts the output basedon both the size of the deviation and its duration. It eliminates the offset effect of the proportionalaction. This memory location is multiplied by 10 to get the actual setpoint (10 * X + 0).

Chilled Water P Setpoint 1D84This location contains the Chilled Water Proportional Setpoint. Proportional Control provides acontinuous, linear relationship between the deviation and correction signal. This memory location isdivided by 10 to get the actual setpoint (0.1 * X + 0).

Chilled Water Setpoint 1DB2,1DB3This location contains the control setpoint for Chilled Water. This is the water temperature theChiller/Heater will maintain in the cooling mode. Memory location 1DB2 is the high byte andmemory location 1DB3 is the low byte. These form a two byte number. These locations are dividedby 10 to get the actual setpoint (0.1 * X + 0).

Hot Water D Setpoint 1D89This location contains the Hot Water Derivative Setpoint. This location is applicable only for DCunits. Derivative Control adjusts the output based on the rate of change of the deviation.

Hot Water I Setpoint 1D88This location contains the Hot Water Integral Setpoint. This location is applicable only for DC units.Integral Control adjusts the output based on both the size of the deviation and its duration. Iteliminates the offset effect of the proportional action. This location is multiplied by 10 to get theactual setpoint (10 * X + 0).

Hot Water P Setpoint 1D87This location contains the Chilled Water Proportional Setpoint. This location is applicable only forDC units. Proportional Control provides a continuous, linear relationship between the deviation andcorrection signal. This memory location is divided by 10 to get the actual setpoint (0.1 * X + 0).

Hot Water Setpoint 1DB0,1DB1These locations contain the control setpoint for Chilled Water. These locations are applicable onlyfor DC units. This is the water temperature the Chiller/Heater will maintain in the heating mode.Memory location 1DB0 is the high byte and memory location 1DB1 is the low byte. These form atwo byte number. These locations are divided by 10 to get the actual setpoint (0.1 * X + 0).

Rank Up Setting 18D3This is location contains the Rank Up Setting. This setting controls the maximum output signal (%)to the fuel control valve in the cooling mode or the cooling main mode for DC-S units.



Alarm Data Alarm Data 1 always contains the most recent alarm. Alarm Data 2 contains the previous alarm andAlarm Data 3 contains the oldest alarm.The first memory location is for alarm area 1. The second location is for alarm area 2 and the thirdlocation is for alarm data 3. The alarm descriptions for the alarms are the same for all three areas,just different memory locations.

This is a sample alarm name area 1 location area 2 location area 3 locationThis is the alarm description.

Alarm Data 1 - Digital Input DataDescription Address Range Units

DCH

DCS

DCU

NCU

LCU


1781BIT 1



0=Off1=On X X X X




0=Off1=On X X X X

Auto Restart after Power Failure 1780BIT 3

0=Disabled1=Enabled X X X X


0=Off1=On

X X X


0=No Flow1=Flow X X X X

Chilled water Pump Interlock 1781BIT 7

0=Open1=Closed X X X X

Control Valve 1 (DC-* units)

1780BIT 7

0=Auto1=Manual X X X


1784BIT 0

0=Not in Auto1= Auto X


1784BIT 1

0=Not Mnl Close1= Mnl Close X


1784BIT 3

0=Not Mnl Open1=Mnl Open X


1784BIT 2

0=Not Mnl Stop1= Mnl Stop X


0=Auto1=Manual X




DCS

DCU

NCU

LCU


0=No Cooling1=Cooling X X X X


0=No Flow1=Flow X X X X


0=Open1=Closed X X X X

Exhaust Gas Temperature 1785BIT 0





0=No Heating1=Heating X X X

High Generator Temperature 1785BIT 5


High Hot Water Temperature 1785BIT 3



1780BIT 2



1782BIT 3



0=Open1=Closed X X

Low Chilled Water Temperature 1785BIT 2


Low Cooling Water Temperature 1785BIT 4



0=Off1=On X X X X X




0=Off1=On X X X X X


0=Stop 1=StartX X X X X


0=No Simul1=Simul X



Absorbent Pump 1 or Invertor (Alarm)1781, BIT 1 1981, BIT 1 1B81, BIT 1This is the alarm status of Absorbent Pump 1 or the Invertor. A 0 indicates normal operation and a 1indicates an alarm condition.

Absorbent Pump 1 (Off/On) 1782, BIT 7 1982, BIT 7 1B82, BIT 7This is the off/on status of Absorption Pump 1. A 0 indicates the pump is off and a 1 indicates thepump is on.

Absorbent Pump 2 (Alarm) 1781, BIT 2 1981, BIT 2 1B81, BIT 2This is the alarm status of Absorbent Pump 2. A 0 indicates normal operation and a 1 indicates analarm condition.

Absorbent Pump 2 (Off/On) 1783, BIT 0 1983, BIT 0 1B83, BIT 0This is the off/on status of Absorption Pump 2. A 0 indicates the pump is off and a 1 indicates thepump is on

Auto Restart after Power Failure 1780, BIT 3 1980, BIT 3 1B80, BIT 3This is the status of the Auto Restart after Power Failure. A 0 indicates the Auto Restart after PowerFailure is disabled and a 1 indicates that it is enabled.

Burner Signal 1780, BIT 0 1980, BIT 0 1B80, BIT 0This is the off/on signal of the Burner Signal for DC units. A 0 indicates an off signal and a 1indicates an on signal.

Chilled Water Flow Rate 1782, BIT 4 1982, BIT 4 1B82, BIT 4This is the status of the Chilled Water Flow Rate switch. A 0 indicates no flow and a 1 indicatesflow.

Chilled Water Pump Interlock 1781, BIT 7 1981, BIT 7 1B81, BIT 7This is the status of the Chilled Water Pump Interlock. A 0 indicates an open interlock and a 1indicates a closed interlock.

Control Valve 1 1780, BIT 7 1980, BIT 7 1B80, BIT 7This is the auto/manual status of Control Valve 1 for DC units (DC-*). A 0 indicates Auto modeand a 1 indicates Manual Mode.

Control Valve 1 (Automatic) 1784, BIT 0 1984, BIT 0 1B84, BIT 0This is the Automatic control of Control Valve 1 for Steam units (NC-U). A 0 indicates the controlvalve is not in the automatic mode and a 1 indicates the control valve is in the automatic mode.

Control Valve 1 (Manual Close) 1784, BIT 1 1984, BIT 1 1B84, BIT 1This is the Manual Close control of Control Valve 1 for Steam units (NC-U). A 0 indicates thecontrol valve is not in the manual close mode and a 1 indicates the control valve is in the manualclose mode.

Control Valve 1 (Manual Open) 1784, BIT 3 1984, BIT 3 1B84, BIT 3This is the Manual Open control of Control Valve 1 for Steam units (NC-U). A 0 indicates thecontrol valve is not in the manual open mode and a 1 indicates the control valve is in the manualopen mode.

Control Valve 1 (Manual Stop) 1784, BIT 2 1984, BIT 2 1B84, BIT 2This is the Manual Stop control of Control Valve 1 for Steam units (NC-U). A 0 indicates thecontrol valve is not in the manual stop mode and a 1 indicates the control valve is in the manual stopmode.

Control Valve 2 1781, BIT 0 1981, BIT 0 1B81, BIT 0This is the auto/manual status of the Control Valve 2. This location is applicable only forSimultaneous units (DC-S). A 0 indicates Auto mode and a 1 indicates Manual mode.

Cooling Mode 1780, BIT 4 1980, BIT 4 1B80, BIT 4This indicates the unit is in the Cooling mode. A 0 indicates that chiller is not in Cooling and a 1indicates that the unit is in Cooling.



Cooling Water Flow Rate 1782, BIT 6 1982, BIT 6 1B82, BIT 6This is the status of the Cooling Water Flow Rate. A 0 indicates no flow and a 1 indicates flow.

Cooling Water Pump Interlock 1782, BIT 1 1982, BIT 1 1B82, BIT 1This is the status of the Cooling Water Pump Interlock. A 0 indicates an open interlock and a 1indicates a closed interlock.

Exhaust Gas Temperature 1785, BIT 0 1985, BIT 0 1B85, BIT 0This is the alarm status of the Exhaust Gas Temperature. A 0 indicates normal operation and a 1indicates a high exhaust gas temperature.

Flame Failure 1783, BIT 5 1983, BIT 5 1B83, BIT 5This is the alarm status of the Flame Failure for DC units. A 0 indicates normal operation and a 1indicates an alarm condition.

Heating Mode 1780, BIT 5 1980, BIT 5 1B80, BIT 5This indicates the unit is in the Heating mode for DC units. A 0 indicates that chiller is not inHeating and a 1 indicates that the unit is in Heating.

High Generator Temperature 1785, BIT 5 1985, BIT 5 1B85, BIT 5This is the alarm status of the High Generator Temperature. A 0 indicates normal operation and a 1indicates high temperature in the high temperature generator.

High Hot Water Temperature 1785, BIT 3 1985, BIT 3 1B85, BIT 3This is the alarm status of the High Hot Water Temperature alarm. A 0 indicates normal operationand a 1 indicates high hot water temperature.

High Temperature Generator Low Solution Level 1780, BIT 2 1980, BIT 2 1B80, BIT 2This is the alarm status of the Low Solution Level in the High Temperature Generator for DC units.A 0 indicates normal operation and a 1 indicates an alarm condition.

High Temperature Generator Pressure1782, BIT 3 1982, BIT 3 1B82, BIT 3This is the alarm status of the High Temperature Generator Pressure. A 0 indicates normal operationand a 1 indicates an alarm condition.

Hot Water Pump Interlock 1782, BIT 0 1982, BIT 0 1B82, BIT 0This is the status of the Hot Water Pump Interlock. A 0 indicates an open interlock and a 1 indicatesa closed interlock.

Low Chilled Water Temperature 1785, BIT 2 1985, BIT 2 1B85, BIT 2This is the alarm status of the Low Chilled Water Temperature. A 0 indicates normal operation and a1 indicates an alarm condition.

Low Cooling Water Temperature 1785, BIT 4 1985, BIT 4 1B85, BIT 4This is the alarm status of the Low Cooling Water Temperature. A 0 indicates normal operation anda 1 indicates an alarm condition.

Purge Pump 1783, BIT 2 1983, BIT 2 1B83, BIT 2This is the off/on status of the Purge Pump. A 0 indicates the pump is off and a 1 indicates thepump is on.

Refrigerant Pump (Alarm) 1781, BIT 6 1981, BIT 6 1B81, BIT 6This is the alarm status of the Refrigerant Pump. A 0 indicates normal operation and a 1 indicates analarm condition.

Refrigerant Pump (Off/On) 1783, BIT 4 1983, BIT 4 1B83, BIT 4This is the off/on status of the Refrigerant Pump. A 0 indicates the pump is off and a 1 indicates thepump is on.

Remote Start/Stop Signal 1 1784, BIT 6 1984, BIT 6 1B84, BIT 6This is the first of the start/stop signals. This is the input that will be used for remote start/stop of thechiller. A 0 indicates a stop signal and a 1 indicates a start signal.



Simultaneous Mode 1780, BIT 6 1980, BIT 6 1B80, BIT 6This indicates the unit is in the Simultaneous mode. A 0 indicates that chiller is not in Simultaneousand a 1 indicates that the unit is in Simultaneous mode.

Alarm Data 1 - SW3 DataDescription Address Range Units

DCH

DCS

DCU

NCU

LCU


See long description for ModelTypes

Model Type

X X X X X

Unit Model Type 1787, BITS 0-3 1987, BITS 0-3 1B87, BITS 0-3These bits are used to determine the Model Type to the chiller. The following show the relationshipbetween bit settings and model types:

BIT 0 BIT 1 BIT 2 BIT 3 Model0 0 0 0 DC-S or DC-H (Gas Fired)1 0 0 0 DC-S or DC-H (Oil Fired)0 1 0 0 DC-U (Gas Fired)1 1 0 0 DC-U (Oil Fired)0 0 1 0 DC-U without heating mode (Gas)1 0 1 0 DC-U without heating mode (Oil)0 1 1 0 TC-U1 1 1 0 NC-U0 0 0 1 TC-U for heavy duty1 0 0 1 NC-U for heavy duty0 1 0 1 LC-U1 1 0 1 LC-U for heavy duty

Alarm Data 1 - Analog DataDescription Address Range Units

DCH

DCS

DCU

NCU

LCU

Chilled or Hot Water Inlettemperatures

17B0 17B1 Hi ByteLo Byte 0.1*X+0=

°FX X X X

Chilled or Hot Water OutletTemperatures


°FX X X X

Condensed RefrigerantTemperature

17BC17BD

Hi ByteLo Byte 0.1*X+0=

°FX X X X X

Cooling Water InletTemperature


°FX X X X X

Cooling Water OutletTemperature


°FX X X X X

Exhaust Gas Temperature(DC-*) or Steam CondensateTemperature (NC-U)


°FX X X X




DCS

DCU

NCU

LCU



°FX X X X X

Hot Water Inlet Temperature 18B2 18B3 Hi ByteLo Byte 0.1*X+0=

°FX X

Hot Water OutletTemperature


°FX X


17BA17BB

Hi ByteLo Byte 0.1*X+0=

°FX X X X

Remote Reset Current Signal 188A188B

Hi ByteLo Byte

0.1*X+0=mA X X X X X

Unit Hours 1880-1883


BCDX X X X X

Chilled or Hot Water Inlet Temperatures17B0,17B1 19B0,19B1 1BB0,1BB1This is the Chilled or Hot Water Outlet Temperature. These locations are read by forming the highbyte (1XB0) and the low byte (1XB1) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Chilled or Hot Water Outlet Temperatures17B2,17B3 19B2,19B3 1BB2,1BB3This is the Chilled or Hot Water Outlet Temperature. These locations are read by forming the highbyte (1XB0) and the low byte (1XB1) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Condensed Refrigerant Temperature17BC,17BD 19BC,19BD 1BBC,1BBDThis is the Condensed Refrigerant Temperature. These locations are read by forming the high byte(1XC2) and the low byte (1XC3) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Cooling Water Inlet Temperature 17B4,17B5 19B4, 19B5 1BB4,1BB5This is the Cooling Water Inlet Temperature. These locations are read by forming the high byte(1XBE) and the low byte (1XBF) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Cooling Water Outlet Temperature 17B6,17B7 19B6,19B7 1BB6,1BB7This is the Cooling Water Outlet Temperature. These locations are read by forming the high byte(1XC0) and the low byte (1XC1) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Exhaust Gas Temperature/Steam Condensate Temperature 18B0,18B1 1AB0,1AB1 1CB0,1CB1This is the Exhaust Gas (DC-H, DC-S, DC-U) or Steam Condensate Temperature (NC-U). Thislocation is the Exhaust Gas Temperature for DC units or the Steam Condensate for NC units. Theselocations are read by forming the high byte (1XC6) and the low byte (1XC7) into a two byte numberand dividing by 10 (0.1 * X + 0 = °F).

High Temperature Generator Temperature17B8,17B9 19B8,19B9 1BB8,1BB9This is the High Temperature Generator Temperature. These locations are read by forming the highbyte (1XC4) and the low byte (1XC5) into a two byte number and dividing by 10 (0.1 * X + 0 = °F).

Hot Water Inlet Temperature 18B2,18B3 1AB2,1AB3 1CB2,1CB3This is the Hot Water Inlet Temperature for DC-S and DC-H units. These locations contain validdata only when the Chiller/Heater is in the Heating or Simultaneous mode. These locations are readby forming the high byte (1XB8) and the low byte (1XB9) into a two byte number and dividing by10 (0.1 * X + 0 = °F).



Hot Water Outlet Temperature 18B4,18B5 1AB4,1AB5 1CB4,1CB5This is the Hot Water Outlet Temperature for DC-S and DC-H units. These locations contain validdata only when the Chiller/Heater is in the Heating or Simultaneous mode. These locations are readby forming the high byte (1XB4) and the low byte (1XB5) into a two byte number and dividing by10 (0.1 * X + 0 = °F).

Low Temperature Generator Temperature17BA,17BB 19BA,19BB 1BBA,1BBBThis is the Low Temperature Generator Temperature. These locations are read by forming the highbyte (1XBC) and the low byte (1XBD) into a two byte number and dividing by 10 (0.1 * X + 0 =°F)

Remote Reset Current Signal 188A,188B 1A8A,1A8B 1C8A,1C8BThis is the Remote Reset Current Signal from the BAS company. This is used to offset from theheating or cooling setpoint, depending on the mode of the Chiller/Heater unit. These locations areread by forming the high byte (1X8A) and the low byte (1X8B) into a two byte number and dividingby 10 (0.1 * X + 0 = mA).

Unit Hours 1880-1883 1A80-1A83 1C80-1C83This is the amount of Chiller/Heater unit operating hours. This number is recorded in BCD format.Byte 1X80 is the highest byte of the BCD string and byte 1X83 is the lowest byte of the BCD string.The operating hours are read the same way as the operating hours for Absorbent Pump 1.

Alarm Data 1 - Digital Output DataDescription Address Range Units

DCH

DCS

DCU

NCU

LCU

Absorbent Pump 1 188DBIT 1

0=Disabled1=Enabled

X X X X X

Absorbent Pump 2 188DBIT 2


Alarm Indication 188CBIT 2

0=No Alm1=Alarm

X X X X X

Answer Back Signal 188EBIT 4


Burner Controller Signal 188DBIT 5

0=Disabled1=Enabled

X X X

Burner Signal 188DBIT 6

0=Off 1=On X X X


188EBIT 6


Cooling Main/Heating Main 188CBIT 4

0=Htg 1=Clg X

Cooling Mode Indication 188EBIT 7

0=Off 1=On X X X X

Cooling Water Pump Signal 188EBIT 5



188EBIT 1

0=Off 1=On X X X X


188EBIT 0

0=Off 1=On X X X X

Fuel Input Valve/Heating MainMode (Close)

188EBIT 3

0=Off 1=On X




DCS

DCU

NCU

LCU

Fuel Input Valve/Heating MainMode (Open)

188EBIT 2

0=Off 1=On X

Heating Mode Indication 188CBIT 0

0=Off 1=On X X X

Operation Indication 188DBIT 0

0=Off 1=On X X X X


188DBIT 3

0=Disabled1=Enabled

X X X X X

Refrigerant Pump ManualFunction

188DBIT 4

0=Disabled1=Enabled

X X X X X

Simultaneous Mode Indication 188CBIT 1

0=Off 1=On X

SVRP Valve (open/close) 188CBIT 3

0=Off 1=On X

SVRU Valve (open/close) 188DBIT 7

0=Off 1=On X

Absorbent Pump 1 188D, BIT 1 1A8D, BIT 1 1C8D, BIT 1This is the enable/disable signal to Absorbent Pump 1. A 0 indicates an the pump is disabled and a1 indicates the pump is enabled.

Absorbent Pump 2 188D, BIT 2 1A8D, BIT 2 1C8D, BIT 2This is the status of the on/off signal to Absorbent Pump 2. A 0 indicates an the pump is off and a 1indicates the pump is on.

Alarm Indication 188C, BIT 2 1A8C, BIT 2 1C8C, BIT 2This is the status of the Alarm Indication. A 0 indicates normal (no alarm) operation and a 1indicates an alarm condition.

Answer Back Signal 188E, BIT 4 1A8E, BIT 4 1C8E, BIT 4This is the status of the Answer Back Signal. This is used to confirm a start signal that has beenaccepted. A 0 indicates an off condition and a 1 indicates a start or running condition.

Burner Controller Signal 188D, BIT 5 1A8D, BIT 5 1C8D, BIT 5This is the status of the Burner Controller Signal. This is used to prevent burner operation in analarm condition. A 0 indicates either an off or alarm condition (disabled) and a 1 indicates that theburner is able to operate normally (enabled).

Burner Signal 188D, BIT 6 1A8D, BIT 6 1C8D, BIT 6This is the output to the Burner Controller. This location is applicable only for DC units. A 0indicates an off signal and a 1 indicates an on signal.

Chilled and/or Hot Water Pump Signal188E, BIT 6 1A8E, BIT 6 1C8E, BIT 6This is the status of the Chilled and/or the Hot Water Pump Signal. A 0 indicates a pump off signaland a 1 indicates a pump on signal.

Cooling Main/Heating Main 188C, BIT 4 1A8C, BIT 4 1C8C, BIT 4This is the status of the Cooling Main/Heating Main indication output. This location is applicableonly for Simultaneous units (DC-S). A 0 indicates the unit is in heating main and a 1 indicates thatthe unit is in cooling main.

Cooling Mode Indication 188E, BIT 7 1A8E, BIT 7 1C8E, BIT 7This is the status of the Cooling Mode Output. A 0 indicates the unit is not in the Cooling mode anda 1 indicates the unit is in the Cooling mode. This output is used as an indicator to remote systems.



Cooling Water Pump Signal 188E, BIT 5 1A8E, BIT 5 1C8E, BIT 5This is the status of the Cooling Water Pump Signal. A 0 indicates a pump off signal and a 1indicates a pump on signal.

Fuel Input Valve/Cooling Main Mode (Close)188E, BIT 1 1A8E, BIT 1 1C8E, BIT 1This is the status of the Fuel Input Valve/Cooling Main Mode close output. A 0 indicates the valveis not closing (off) and a 1 indicates the valve is closing (on).

Fuel Input Valve/Cooling Main Mode (Open)188E, BIT 0 1A8E, BIT 0 1C8E, BIT 0This is the status of the Fuel Input Valve/Cooling Main Mode open output. A 0 indicates the valve isnot opening (off) and a 1 indicates the valve is opening (on).

Fuel Input Valve/Heating Main Mode (Close)188E, BIT 3 1A8E, BIT 3 1C8E, BIT 3This is the status of the Fuel Input Valve/Heating Main Mode close output. This location isapplicable only for Simultaneous units (DC-S). A 0 indicates the valve is not closing (off) and a 1indicates the valve is closing (on).

Fuel Input Valve/Heating Main Mode (Open)188E, BIT 2 1A8E, BIT 2 1C8E, BIT 2This is the status of the Fuel Input Valve/Heating Main Mode open output. This location isapplicable only for Simultaneous units (DC-S). A 0 indicates the valve is not opening (off) and a 1indicates the valve is opening (on).

Heating Mode Indication 188C, BIT 0 1A8C, BIT 0 1C8C, BIT 0This is the status of the Heating Mode Output. This location is applicable only for DC units. A 0indicates the unit is not in the Heating mode and a 1 indicates the unit is in the Heating mode. Thisoutput is used as an indicator to remote systems.

Operation Indication Contact 188D, BIT 0 1A8D, BIT 0 1C8D, BIT 0This is the status of the chiller. A 0 indicates the unit is off and a 1 indicates the unit is on evenduring the dilution cycle.

Refrigerant Pump Automatic Function188D, BIT 3 1A8D, BIT 3 1C8D, BIT 3This is the automatic start/stop of the Refrigerant Pump. A 0 indicates the automatic function isdisabled and a 1 indicates the automatic function is enabled.

Refrigerant Pump Manual Function 188D, BIT 4 1A8D, BIT 4 1C8D, BIT 4This is the manual start/stop mode of the Refrigerant Pump. A 0 indicates the manual function isdisabled and a 1 indicates the manual function is enabled. The microprocessor can still stop thepump while in the manual start mode.

Simultaneous Mode Indication 188C, BIT 1 1A8C, BIT 1 1C8C, BIT 1This is the status of the Simultaneous Mode Output. This location is applicable only forSimultaneous units (DC-S). A 0 indicates the unit is not in the Simultaneous mode and a 1 indicatesthe unit is in the Simultaneous mode. This output is used as an indicator to remote systems.

SVRP Valve 188C, BIT 3 1A8C, BIT 3 1C8C, BIT 3This valve is used for simultaneous chiller/heaters to drain refrigerant from the condenser sump.

SVRU Valve 188D, BIT 7 1A8D, BIT 7 1C8D, BIT 7This valve is used for simultaneous chiller/heaters to drain refrigerant from the evaporator sump.


DCH

DCS

DCU

NCU

LCU


1981BIT 1

0=Normal1=Alarm

X X X X


0=Off1=On

X X X X




DCS

DCU

NCU

LCU


0=Normal1=Alarm

X X X X


0=Off1=On

X X X X

Auto Restart after Power Failure 1980BIT 3

0=Disabled1=Enabled

X X X X


0=Off1=On

X X X


0=No Flow1=Flow

X X X X

Chilled water Pump Interlock 1981BIT 7

0=Open1=Closed

X X X X


1980BIT 7

0=Auto1=Manual

X X X


1984BIT 0

0=Not in Auto1= Auto

X


1984BIT 1

0=Not MnlClose1= Mnl Close

X


1984BIT 3

0=Not MnlOpen1=Mnl Open

X


1984BIT 2

0=Not MnlStop1= Mnl Stop

X


0=Auto1=Manual

X


0=No Cooling1=Cooling

X X X X


0=No Flow1=Flow

X X X X


0=Open1=Closed

X X X X

Exhaust Gas Temperature 1985BIT 0

0=Normal1=Alarm

X X X


0=Normal1=Alarm

X X X


0=No Heating1=Heating

X X X

High Generator Temperature 1985BIT 5

0=Normal1=Alarm

X X X X

High Hot Water Temperature 1985BIT 3

0=Normal1=Alarm

X X X


1980BIT 2

0=Normal1=Alarm

X X X




DCS

DCU

NCU

LCU


1982BIT 3

0=Normal1=Alarm

X X X X


0=Open1=Closed

X X

Low Chilled Water Temperature 1985BIT 2

0=Normal1=Alarm

X X X X

Low Cooling Water Temperature 1985BIT 4

0=Normal1=Alarm

X X X X


0=Off1=On

X X X X


0=Normal1=Alarm

X X X X


0=Off1=On

X X X X


0=Stop 1=Start X X X X


0=No Simul1=Simul

X

See descriptions for Alarm Data 1 above.


DCH

DCSDC

UNC

U


See below for Models Types Model Type X X X X



DCH

DCS

DCU

NCU

Chilled or Hot Water Inlettemperatures

19B019B1

Hi ByteLo Byte 0.1*X+0=°

F

X X X X


19B219B3


F

X X X X


19BC19BD


F

X X X X


19B419B5


F

X X X X




DCS

DCU

NCU


19B619B7


F

X X X X

Exhaust Gas Temperature (DC-*) or Steam CondensateTemperature (NC-U)

1AB01AB1


F

X X X X


19B819B9


F

X X X X

Hot Water Inlet Temperature 1AB21AB3


F

X X

Hot Water Outlet Temperature 1AB41AB5


F

X X


19BA19BB


F

X X X X

Remote Reset Current Signal 1A8A1A8B

Hi ByteLo Byte 0.1*X+0=m

A

X X X X

Unit Hours 1A80-1A83


BCD X X X X



DCH

DCS

DCU

NCU

Absorbent Pump 1 1A8DBIT 1

0=Disabled1=Enabled

X X X X

Absorbent Pump 2 1A8DBIT 2

0=Off 1=On X X X X

Alarm Indication 1A8CBIT 2

0=No Alm1=Alarm

X X X X

Answer Back Signal 1A8EBIT 4

0=Off 1=On X X X X

Burner Controller Signal 1A8DBIT 5

0=Disabled1=Enabled

X X X

Burner Signal 1A8DBIT 6

0=Off 1=On X X X


1A8EBIT 6

0=Off 1=On X X X X

Cooling Main/Heating Main 1A8CBIT 4

0=Htg 1=Clg X




DCS

DCU

NCU

Cooling Mode Indication 1A8EBIT 7

0=Off 1=On X X X X

Cooling Water Pump Signal 1A8EBIT 5

0=Off 1=On X X X X


1A8EBIT 1

0=Off 1=On X X X X


1A8EBIT 0

0=Off 1=On X X X X

Fuel Input Valve/Heating MainMode (Close)

1A8EBIT 3

0=Off 1=On X

Fuel Input Valve/Heating MainMode (Open)

1A8EBIT 2

0=Off 1=On X

Heating Mode Indication 1A8CBIT 0

0=Off 1=On X X X

Operation Indication 1A8DBIT 0

0=Off 1=On X X X X


1A8DBIT 3

0=Disabled1=Enabled

X X X X

Refrigerant Pump ManualFunction

1A8DBIT 4

0=Disabled1=Enabled

X X X X

Simultaneous Mode Indication 1A8CBIT 1

0=Off 1=On X

SVRP Valve (open/close) 1A8CBIT 3

0=Off 1=On X

SVRU Valve (open/close) 1A8DBIT 7

0=Off 1=On X



DCH

DCS

DCU

NCU


1B81BIT 1

0=Normal1=Alarm

X X X X

Absorbent Pump 1 (Off/On) 1B82BIT 7

0=Off1=On

X X X X

Absorbent Pump 2 (Alarm) 1B81BIT 2

0=Normal1=Alarm

X X X X

Absorbent Pump 2 (Off/On) 1B83BIT 0

0=Off1=On

X X X X

Auto Restart after Power Failure 1B80BIT 3

0=Disabled1=Enabled

X X X X

Burner Signal 1B80BIT 0

0=Off1=On

X X X

Chilled Water Flow Rate 1B82BIT 4

0=No Flow1=Flow

X X X X




DCS

DCU

NCU

Chilled water Pump Interlock 1B81BIT 7

0=Open 1=Closed X X X X


1B80BIT 7

0=Auto 1=Manual X X X


1B84BIT 0

0=Not in Auto1= Auto

X

Control Valve 1 (Manual Close) (NC-U)

1B84BIT 1

0=Not Mnl Close1= Mnl Close

X


1B84BIT 3

0=Not Mnl Open1=Mnl Open

X


1B84BIT 2

0=Not Mnl Stop1= Mnl Stop

X

Control Valve 2 1B81BIT 0

0=Auto 1=Manual X

Cooling Mode 1B80BIT 4

0=No Cooling1=Cooling

X X X X

Cooling Water Flow Rate 1B82BIT 6

0=No Flow1=Flow

X X X X

Cooling Water Pump Interlock 1B82BIT 1

0=Open 1=Closed X X X X

Exhaust Gas Temperature 1B85BIT 0

0=Normal1=Alarm

X X X

Flame Failure 1B83BIT 5

0=Normal1=Alarm

X X X

Heating Mode 1B80BIT 5

0=No Heating1=Heating

X X X

High Generator Temperature 1B85BIT 5

0=Normal1=Alarm

X X X X

High Hot Water Temperature 1B85BIT 3

0=Normal1=Alarm

X X X

High Temperature Generator LowSolution Level

1B80BIT 2

0=Normal1=Alarm

X X X


1B82BIT 3

0=Normal1=Alarm

X X X X

Hot Water Pump Interlock 1B82BIT 0

0=Open 1=Closed X X

Low Chilled Water Temperature 1B85BIT 2

0=Normal1=Alarm

X X X X

Low Cooling Water Temperature 1B85BIT 4

0=Normal1=Alarm

X X X X

Purge Pump 1B83BIT 2

0=Off1=On

X X X X

Refrigerant Pump (Alarm) 1B81BIT 6

0=Normal1=Alarm

X X X X

Refrigerant Pump (Off/On) 1B83BIT 4

0=Off1=On

X X X X

Remote Start/Stop Signal 1 1B84BIT 6

0=Stop 1=Start X X X X




DCS

DCU

NCU

Simultaneous Mode 1B80BIT 6

0=No Simul1=Simul

X



DCH

DCSDC

UNC

U

Unit Model Type 1B87BITS 0-3

See below for ModelsTypes

Model Type X X X X



DCH

DCS

DCU

NCU

Chilled or Hot Water InletTemperatures

1BB01BB1

Hi ByteLo Byte

0.1*X+0=°F X X X X


1BB21BB3

Hi ByteLo Byte

0.1*X+0=°F X X X X


1BBC1BBD

Hi ByteLo Byte

0.1*X+0=°F X X X X


1BB41BB5

Hi ByteLo Byte

0.1*X+0=°F X X X X


1BB61BB7

Hi ByteLo Byte

0.1*X+0=°F X X X X

Exhaust Gas Temperature(DC-*) or Steam CondensateTemperature (NC-U)

1CB01CB1

Hi ByteLo Byte

0.1*X+0=°F X X X X


1BB81BB9

Hi ByteLo Byte

0.1*X+0=°F X X X X

Hot Water Inlet Temperature 1CB21CB3

Hi ByteLo Byte

0.1*X+0=°F X X

Hot Water Outlet Temperature 1CB41CB5

Hi ByteLo Byte

0.1*X+0=°F X X


1BBA1BBB

Hi ByteLo Byte

0.1*X+0=°F X X X X

Remote Reset Current Signal 1C8A1C8B

Hi ByteLo Byte 0.1*X+0=m

A

X X X X

Unit Hours 1C80-1C83

Highest ByteLowest Byte

BCD X X X X





DCH

DCS

DCU

NCU

Absorbent Pump 1 1C8DBIT 1

0=Disabled1=Enabled

X X X X

Absorbent Pump 2 1C8DBIT 2

0=Off 1=On X X X X

Alarm Indication 1C8CBIT 2

0=No Alm1=Alarm

X X X X

Answer Back Signal 1C8EBIT 4

0=Off 1=On X X X X

Burner Controller Signal 1C8DBIT 5

0=Disabled1=Enabled

X X X

Burner Signal 1C8DBIT 6

0=Off 1=On X X X

Chilled and/or Hot Water Pump Signal 1C8EBIT 6

0=Off 1=On X X X X

Cooling Main/Heating Main 1C8CBIT 4

0=Htg 1=Clg X

Cooling Mode Indication 1C8EBIT 7

0=Off 1=On X X X X

Cooling Water Pump Signal 1C8EBIT 5

0=Off 1=On X X X X

Fuel Input Valve/Cooling Main Mode(Close)

1C8EBIT 1

0=Off 1=On X X X X

Fuel Input Valve/Cooling Main Mode(Open)

1C8EBIT 0

0=Off 1=On X X X X

Fuel Input Valve/Heating Main Mode(Close)

1C8EBIT 3

0=Off 1=On X

Fuel Input Valve/Heating Main Mode(Open)

1C8EBIT 2

0=Off 1=On X

Heating Mode Indication 1C8CBIT 0

0=Off 1=On X X X

Operation Indication 1C8DBIT 0

0=Off 1=On X X X X

Refrigerant Pump Automatic Function 1C8DBIT 3

0=Disabled1=Enabled

X X X X

Refrigerant Pump Manual Function 1C8DBIT 4

0=Disabled1=Enabled

X X X X

Simultaneous Mode Indication 1C8CBIT 1

0=Off 1=On X

SVRP Valve (open/close) 1C8CBIT 3

0=Off 1=On X

SVRU Valve (open/close) 1C8DBIT 7

0=Off 1=On X




Glossary of Terms

Direct Connect MicroTech Absorption GatewayThis is the type of gateway used whenever there is only one (1) McQuay absorption chiller tocommunicate with. This gateway will not work with an OPM or in a MicroTech network.

MAGMicroTech Absorption Gateway

Network MicroTech Absorption GatewayThis is the type of gateway used whenever an OPM panel exists or when a McQuay absorptionchiller is in a MicroTech network.

OPMOpen Protocol Master



Index

Absorbent Pump 112, 13, 17–19, 23, 27, 30, 32–33,36

Absorbent Pump 1 or Invertor ............................12, 23, 33Absorbent Pump 2 .... 12, 13, 22, 23, 28, 30, 32–33, 36Alarm Indication .......................................14, 28, 32, 36Alarm Pointer ..............................................................19Answer Back Signal ......................... 14–15, 28, 32, 36Auto Restart after Power Failure ...12, 22, 23, 30, 33Burner...12, 14–15, 17–18, 22, 23, 28–29, 30, 32–34, 36Burner Controller Signal...........................................15, 29Burner Signal ................. 12, 14–15, 23, 28–29, 32–34, 36Chilled and/or Hot Water Pump Signal14–15, 28–

29, 33, 36Chilled Water D Setpoint..........................................20Chilled Water Flow Rate ...................12, 22, 23, 30, 34Chilled Water I Setpoint............................................20Chilled Water Inlet Temperature ..............................8Chilled Water Outlet Temperature...........................8Chilled Water P Setpoint ..........................................20Chilled Water Pump Interlock.........12, 22, 24, 30, 34Chilled Water Setpoint..............................................20Communications Check Output...............................6Communications Error ...............................................6Condensed Refrigerant Temperature...9, 26, 32, 35Control Valve 1 .............................. 9, 12, 22, 24, 30, 34Control Valve 2 ........................ 9, 11, 12, 22, 24, 30, 34Cooling Main/Heating Main ...... 14–15, 28–29, 33, 36Cooling Mode9, 11, 12, 14–15, 21, 22, 24, 28, 29, 30,

33–34, 36Cooling Mode Indication................................................15Cooling Water Flow Rate .......... 11, 13, 22, 24, 30, 34Cooling Water Pump Interlock 11, 13, 22, 24, 31, 34Cooling Water Pump Signal ..... 14–15, 28, 29, 33, 36Exhaust Gas Temperature4, 9, 22, 24, 26–27, 31, 32, 34,

35Flame Failure................................ 11, 13, 22, 24, 31, 34Fuel Control Valve 1 ....................................................9Fuel Control Valve 2 ....................................................9Fuel Input Valve/Cooling Main Mode14–15, 28, 29,

33, 36Fuel Input Valve/Heating Main Mode14–15, 28, 29,

33, 36Heating Mode10, 13, 14, 15–16, 21, 22, 24, 25, 28, 29,

31, 33–34, 36High Generator Temperature ................22, 24, 31, 34High Hot Water Temperature ................23, 24, 31, 34High Temperature Generator Low Solution Level

..................................................... 11, 13, 23, 25, 31, 34High Temperature Generator Pressure11, 13, 23,

25, 31, 34High Temperature Generator Temperature4, 9, 26–27, 32,

35Hot Water D Setpoint.................................................20Hot Water I Setpoint ..................................................20Hot Water Inlet Temperature ...... 9–10, 26–27, 32, 35Hot Water Outlet Temperature .............. 10, 26–27, 32, 35Hot Water P Setpoint.................................................21Hot Water Pump Interlock......... 11, 13, 23, 25, 31, 34Hot Water Setpoint.....................................................21Invertor Output Signal ..........................................9, 10Low Chilled Water Temperature ..........23, 25, 31, 34Low Cooling Water Temperature.........23, 25, 31, 34Low Temperature Generator Temperature9, 10,

26, 27, 32, 35Operation Indication................... 14, 15, 28, 29, 33, 36OPM ..................................................................................5

PID Sampling..................................................................19Processing Alarm Data Output ............................6–7Processing Data Output .........................................6–7Purge Pump .................................. 11, 13, 23, 25, 31, 34Rank Up Setting..........................................................21Refrigerant Pump4, 11, 13, 15, 17–18, 23, 25, 28, 29, 31,

33, 34, 36Refrigerant Pump Automatic Function ................14Refrigerant Pump Manual Function14, 16, 28, 29,

33, 36Remote Reset Current Signal .... 9, 10, 26, 27, 32, 35Remote Start/Stop Signal 1 ...... 11, 13, 23, 25, 31, 35Sending or Receiving Data Output .........................6Simultaneous Mode9, 11, 13, 16, 23, 25, 27, 28, 30, 31,

33, 35, 36Simultaneous Mode Indication...............................14Steam Condensate Temperature .....9, 26–27, 32, 35Steam Control Valve Output Signal .......................4, 9, 10SVRP valve.................................... 14, 16, 28, 30, 33, 36SVRU valve ................................. 4, 14, 16, 28, 30, 33, 36Unit Model Type........................................16, 25, 31, 35Unit Serial Number...............................................19–20

13600 Industrial Park Boulevard, P.O. Box 1551, Minneapolis, MN 55440 USA (763) 553-5330 (www.mcquay.com)

Documents

MicroTech Absorption Chiller - daikinapplied.com · Proprietary Information - Subject to Change McQuay International MicroTech Absorption Chiller Open Protocol Data Information 4