Application Brochure Dedi c · Dedi c i67ca 1-MhpsoLtE-SHoxLg2oO/pfoh WiFi Snow Melting Control 671 Application Brochure Application Page Dedicated Boiler 2 Shared Boiler and Heat

© 2019 tekmar 671_A - 08/19

671_A08/19

Snow Melting Replaces: New

WiFi Snow Melting Control 671Application Brochure

Application Page

Dedicated Boiler 2

Shared Boiler and Heat Exchanger 4

On/Off Steam Valve 6

Electric Cable 8

Two Zones with Common Mixing 10

WiFi Snow Melting Control 671Pulse Width Modulation

PowerRelays

1084-02Designed and assembled in Canada

Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump

11 12 13Do Not Apply Power

Out10

Com9

tN48 161514

Power17

L

18

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1Meets FCC Part 15BIC: 4511-CC3100M0DR1Meets CAN ICES-3 (B)/NMB-3(B)

115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

The WiFi Snow Melting Control 671 operates hydronic and electric heating equipment designed to melt snow and/or ice from roads and walkways surfaces. The control works with tekmar Snow/Ice Sensor 090 or Snow Sensor 095 to automatically detect snow or ice and operates a single boiler, steam valve or electric cable to supply heat to the slab.

2 of 16© 2019 tekmar 671_A - 08/19

Dedicated Boiler A671-1 Mechanical

DescriptionThe WiFi Snow Melting Control 671 operates a boiler that is dedicated for the snow melting system. The system is piped in primary-secondary to allow constant flow rates through the low-mass boiler and filled with glycol to prevent freezing.• The system pump operates continuously when heating the slab during melting/idling/storm operation.• The boiler pump cycles on and off together with the boiler.• The slab temperature is controlled by cycling the boiler on and off.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.

The system operation is dependent on sensor selection, as listed in the table below.

Sensor options Operation methods

Sensor Sensor Model(s)Auto Start/Auto Stop

Auto Start/Timed Stop

Manual Start/Timed Stop

Slab TemperatureControl

S1 Automatic Snow/Ice Sensor 090 or 094 • – • •

S2 Aerial Snow Sensor 095 – • • –

S3 Slab Sensor 072 or 073 – – • •

S2+S3 Aerial Snow Sensor 095 and Slab Sensor 072/073 – • • •

B1 = BoilerP1 = System PumpP2 = Boiler PumpS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070

Legend

S4

671

Snow/Ice Sensor Options

B1

P2

P1 S2

S1

S3

© 2019 tekmar 671_A - 08/193 of 16

T T


PowerRelays


Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump


Out10

Com9

tN48 161514

Power17

L

18

N







115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt


Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

BrnSlab

BlkCom YelBluRed

SnowSensor

095

S4

B1

LN

P1

S1

S2 S3

Dedicated Boiler A671-1 Electrical

4 of 16© 2019 tekmar 671_A - 08/19

Shared Boiler and Heat Exchanger A671-2 Mechanical

A1 = Normally Closed Freeze Protection AquastatB1 = Boiler EnableHX = Heat ExchangerP1 = System PumpP2 = On/Off Heat Exchanger PumpS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070

Legend

671


S4

P2

A1

P1

S1

S2

S3

HX

DescriptionThe WiFi Snow Melting Control 671 operates a snow melting zone warmed from a heat source that is shared with other loads in a building. A heat exchanger isolates the glycol-filled snow melting system loop from the water-filled main heating system.• The system pump operates continuously when heating the slab during melting/idling/storm operation.• The slab temperature is controlled by cycling the boiler on and off.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.• A normally-closed aquastat protects the heat exchanger from freezing by shutting off power to the system pump.

The system operation is dependent on sensor selection, as listed in the table below.Sensor options Operation methods







S3 Slab Sensor 072 or 073 – – • •


© 2019 tekmar 671_A - 08/195 of 16

BrnSlab

BlkCom YelBluRed

SnowSensor

095


PowerRelays


Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump


Out10

Com9

tN48 161514

Power17

L

18

N







115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt


Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

S1

S3S2

S4

LN

B1

P2

A1

P1

Shared Boiler and Heat Exchanger A671-2 Electrical

6 of 16© 2019 tekmar 671_A - 08/19

On/Off Steam Valve A671-3 Mechanical

B1 = Boiler EnableHX = Steam-to-Glycol Heat ExchangerM1 = On/Off Steam ValveP1 = System PumpS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070

Legend

671


S4

P1HX

V1

S1

S2

S3

DescriptionThe WiFi Snow Melting Control 671 operates a steam valve and a steam-to-water heat exchanger to heat a glycol-filled snow melting system.• The system pump operates continuously when heating the slab during melting/idling/storm operation.• The slab temperature is controlled by turning on and off the steam valve.• The boiler relay is closed while the steam valve is open. This provides a signal to fire the steam boiler.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.









S3 Slab Sensor 072 or 073 – – • •


© 2019 tekmar 671_A - 08/197 of 16

on/Off Steam Valve A671-3 Electrical

BrnSlab

BlkCom YelBluRed

SnowSensor

095


PowerRelays


Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump


Out10

Com9

tN48 161514

Power17

L

18

N







115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt


Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

LN

S1

S2 S3

S4

B1

P1

CR

8 of 16© 2019 tekmar 671_A - 08/19

Electric Cable A671-4 Mechanical

671

E1 = 115 or 230 V (ac) Electric Power SupplyH1 = Electric Heating CableR1 = Electric Relay ContactorS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070

Legend


S4

E1 R1

H1

S1

S2

S3

DescriptionThe WiFi Snow Melting Control 671 operates an electric cable snow melting system.• The electric contactor is cycled on and off based on the slab load.









S3 Slab Sensor 072 or 073 – – • •


© 2019 tekmar 671_A - 08/199 of 16

Electric Cable A671-4 Electrical

R W

BrnSlab

BlkCom YelBluRed

SnowSensor

095


PowerRelays


Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump


Out10

Com9

tN48 161514

Power17

L

18

N







115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt


Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

LN

S1

S2 S3

S4

R1

10 of 16© 2019 tekmar 671_A - 08/19

Two Zones with Common Mixing A671-5 Mechanical

400

V1

B1

423 & 346

444

B2 M1

S4

S5S6

tN4 Mix 1 Bus

DescriptionThe system has two snow melting zones heated by two boilers. The water temperature is regulated by a shared mixing valve for the two snow melting zones. The boilers and mixing valve are operated by a Universal Reset Module 423, Power Manager 346 and Mixing Expansion Module 444. Each snow melting zone is operated by a WiFi Snow Melting Control 671.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.• The zone pump cycles on/off when heating the slab during melting/idling/storm operation.• When the zone is heated, the 671 communicates to the 423 and 444 to operate the mixing valve and fire the boilers.• The 423 and 444 close the mixing valve to provide boiler return protection when the boiler supply temperature falls below

the 423 boiler minimum setting.

The system operation is dependent on sensor selection, as listed in the table below.Sensor options Operation methods







S3 Slab Sensor 072 or 073 – – • •


© 2019 tekmar 671_A - 08/1911 of 16

Two Zones with Common Mixing A671-5 Mechanical

B1, B2 = Modulating BoilersM1 = Actuator Motor 741P1 = Zone 1 PumpP2 = Zone 2 PumpS1a = Zone 1 Snow/Ice Sensor 090 or 094S1b = Zone 2 Snow/Ice Sensor 090 or 094S2a = Zone 1 Snow Sensor 095S2b = Zone 2 Snow Sensor 095

S3a = Zone 1 Slab Sensor 072 or 073S3b = Zone 2 Slab Sensor 072 or 073S4 = Outdoor Sensor 070S5 = 423 Boiler Supply Sensor 082S6 = 444 Mix Supply Sensor 082V1 = 3-Way Mixing Valve 710 through 714X1 = Transformer 009

Legend

400

S1a S1b

S2a

S2b

S3a S3b

P1 P2

671 671

tN4 Mix 1 Bus

Zone #1 Zone #2

Zone #1 Snow/Ice Sensor Options

Zone #2 Snow/Ice Sensor Options

671 Application SettingsSetting Name Value

Boiler Type Control

Outdoor Sensor tekmarNet

12 of 16© 2019 tekmar 671_A - 08/19

50 51 52 53

Stage1/ Stage 2/ Boil Enbl Setp Enbl

75 76 77 78

Demand DemandDHW Setpoint

54 55

DHW Primary

10 Amax79 80 81 82

NPump NPump

tN4Made in Canada

8 VA 1 VA

Boil Sens Sup / RetH7010A

Off / DHW SensorOff / tekmar StagerBoilers On-Off / ModOff / Rotation

Meets Class B: CanadianICES & FCC Part 15

PoweredOutputs24 V (ac)

Universal Reset Module 423

Item

Menu

tektra 1006-01

Demands: 20 - 260 V (ac)Relay Rating: 115 V (ac) 5 A

71 72 73 74DHW 24 V (ac)

/

57 58 59 60 6156

C

C

tN4Mod2 (dc)Mod1 (dc)

6564

C3C1+ –

C

+ – tN4

62 63

C2 tN4 tN4

66 67

DHW ComBoiler

68 69

Boil Com

70

Out

Do not apply power

Test

1 2 3

Vlv R

No Power

Mixing Expansion Module 444Variable Speed / Floating Action / Modulating

Made in CanadaSignal wiring

must be rated atleast 300V / 90°CCu

t for

mA

outp

ut

5R

6R

41tN4

7Mod

+

8Com

9Mix

Power ClsOpnSysPmp

2C

3R

No Power

Date

Cod

e

1

tektra 1019-01

1

Power Manager 346

For product literature:www.tekmarcontrols.com

Boiler Bus 0 Demand Power

Aux Pump 1

Aux Pump 2

Aux Pump 3

tN4

Bus 1 Demand

Bus 2 Demand

Bus 3 Demand


Caution! Disconnect AllPower before Opening

24 V (ac) Fuse: T2.5 A 250 V

H701

1A

Relay Power27 28

NLAux Pump 229 30

NPmpAux Pump 331 32

NPmp

For product instructions, see brochureInput Power: 115 V (ac) ±10% 60 Hz, 12 AAll Loads Using Input Power: 11.5 ARelay Ratings: 115 V (ac) 5 ARelay Power: 115 V (ac) ±10% 60 Hz, 10 ADemands: 20 to 260 V (ac) 2 VA

Supply wires 90°C/105°CSee manual

Boil Bus 0

16 17Demand

Bus 3 Bus 2

18Dem DemDem

19

Bus 1

20 21Demand

227

tN4

5 6

tN4 C C

2Boil 0

11

tN4

9 102C C

15

tN4

13 143

ComAuxPmp1

4

RR R R

3

AuxPmp2

8

AuxPmp3

12Limited power available, see wiring brochure

Room Occ

Room UnOcc

0Boil

1

2

3 1

3

11

9

7

5

12

10

8

6

4

2Sch

edul

eM

embe

r

Input Power23 24

NLAux Pump 125 26

NPmp

RC

Com

Open

Close


PowerRelays


Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump


Out10

Com9

tN48 161514

Power17

L

18

N







115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt


Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up


PowerRelays


Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump


Out10

Com9

tN48 161514

Power17

L

18

N







115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt


Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

Two Zones with Common Mixing A671-6 Electrical

B1, B2 = Modulating BoilersM1 = Actuator Motor 741P1 = Zone 1 PumpP2 = Zone 2 PumpS1a = Zone 1 Snow/Ice Sensor 090 or 094S1b = Zone 2 Snow/Ice Sensor 090 or 094S2a = Zone 1 Snow Sensor 095S2b = Zone 2 Snow Sensor 095

S3a = Zone 1 Slab Sensor 072 or 073S3b = Zone 2 Slab Sensor 072 or 073S4 = Outdoor Sensor 070S5 = 423 Boiler Supply Sensor 082S6 = 444 Mix Supply Sensor 082V1 = 3-Way Mixing Valve 710 through 714X1 = Transformer 009

Legend

S4S5

S6

B2

B1

L N

X1

M1 V1

© 2019 tekmar 671_A - 08/1913 of 16

50 51 52 53

Stage1/ Stage 2/ Boil Enbl Setp Enbl

75 76 77 78

Demand DemandDHW Setpoint

54 55

DHW Primary

10 Amax79 80 81 82

NPump NPump

tN4Made in Canada

8 VA 1 VA

Boil Sens Sup / Ret

H7010A

Off / DHW SensorOff / tekmar StagerBoilers On-Off / ModOff / Rotation


PoweredOutputs24 V (ac)

Universal Reset Module 423

Item

Menu

tektra 1006-01

Demands: 20 - 260 V (ac)Relay Rating: 115 V (ac) 5 A

71 72 73 74DHW 24 V (ac)

/

57 58 59 60 6156

C

C

tN4Mod2 (dc)Mod1 (dc)

6564

C3C1+ –

C

+ – tN4

62 63

C2 tN4 tN4

66 67

DHW ComBoiler

68 69

Boil Com

70

Out

Do not apply power

Test

1 2 3

Vlv R

No Power

Mixing Expansion Module 444Variable Speed / Floating Action / Modulating

Made in CanadaSignal wiring

must be rated atleast 300V / 90°CCu

t for

mA

outp

ut

5R

6R

41tN4

7Mod

+

8Com

9Mix

Power ClsOpnSysPmp

2C

3R

No Power

Date

Cod

e

1

tektra 1019-01

1

Power Manager 346

For product literature:www.tekmarcontrols.com

Boiler Bus 0 Demand Power

Aux Pump 1

Aux Pump 2

Aux Pump 3

tN4

Bus 1 Demand

Bus 2 Demand

Bus 3 Demand


Caution! Disconnect AllPower before Opening

24 V (ac) Fuse: T2.5 A 250 V

H701

1A

Relay Power27 28

NLAux Pump 229 30

NPmpAux Pump 331 32

NPmp

For product instructions, see brochureInput Power: 115 V (ac) ±10% 60 Hz, 12 AAll Loads Using Input Power: 11.5 ARelay Ratings: 115 V (ac) 5 ARelay Power: 115 V (ac) ±10% 60 Hz, 10 ADemands: 20 to 260 V (ac) 2 VA

Supply wires 90°C/105°CSee manual

Boil Bus 0

16 17Demand

Bus 3 Bus 2

18Dem DemDem

19

Bus 1

20 21Demand

227

tN4

5 6

tN4 C C

2Boil 0

11

tN4

9 102C C

15

tN4

13 143

ComAuxPmp1

4

RR R R

3

AuxPmp2

8

AuxPmp3

12Limited power available, see wiring brochure

Room Occ

Room UnOcc

0Boil

1

2

3 1

3

11

9

7

5

12

10

8

6

4

2Sch

edul

eM

embe

r

Input Power23 24

NLAux Pump 125 26

NPmp

RC

Com

Open

Close


PowerRelays


Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump


Out10

Com9

tN48 161514

Power17

L

18

N







115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt


Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up


PowerRelays


Date

Cod

eH

2058

A

Blu3

Yel4

Brn/5

SlabMan

6

MeltC7

Blk/2

ComRed1

Boiler HeatRelay

SystemPump


Out10

Com9

tN48 161514

Power17

L

18

N







115 V (ac) ±10%, 60 Hz, 20 VA230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt


Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

Two Zones with Common Mixing A671-6 Electrical

S1a

S1b

P1

P2

L

L

N

N

671 Application SettingsSetting Name Value

Boiler Type Control

Outdoor Sensor tekmarNet

14 of 16© 2019 tekmar 671_A - 08/19

Page left intentionally blank.

© 2019 tekmar 671_A - 08/1915 of 16

Page left intentionally blank.

671_A - 08/19 16 of 16 © 2019 tekmar

Tel: 1-800-438-3903 • Fax: (250) 984-0815 tekmarControls.com

All specifications are subject to change without notice

Specifications

The following are the recommended specifications for the WiFi Snow Melting Control 671.• The control shall have the ability to use a snow/ice sensor in order to automatically detect snow or ice and begin operation

of the system. The system shall continue to run until the sensor is dry or the control is manually stopped.• The control shall have the ability to be manually started with an adjustable running time that counts down and automatically

stops the system.• The control shall not operate the system to provide heat to the snow melting zones when it enters into either a Warm Weather

Shut Down (WWSD) or a Cold Weather Cut Off (CWCO) mode.• The system water temperature shall be based on the outdoor temperature and feedback from sensors located in the snow

melting slabs.• The control shall have two separate access levels to limit the number of adjustments available to various users.• The control shall have a manual override that allows each output to be manually turned on or off.• The control shall continuously monitor its temperature sensors and provide an error message upon a control or sensor failure.• The control shall record and display boiler and pump running hours and minimum and maximum temperatures depending

on the access level that has been selected.• During extended periods of inactivity, the pumps that are operated by the control shall be periodically exercised to prevent

seizure during long idle periods.

This Application Brochure is not intended to provide full installation instructions and safety information. In order to avoid property damage or injury, please refer to the complete installation manual and product safety information provided with the product.

Documents

Application Brochure Dedi c · Dedi c i67ca 1-MhpsoLtE-SHoxLg2oO/pfoh WiFi Snow Melting Control 671 Application Brochure Application Page Dedicated Boiler 2 Shared Boiler and Heat