ROYAL SERVICESUPPLIES (U.S.A.)

Constant Air Flow RegulatorsVariable Air Flow Regulators

Non- Electric / Electric

RSCAVC-AIR SIDE SOLUTION

Constant Air flow

Designed to control the flow of air without power.

Maintain set point in a pressure independent

operation.

Building-Designed Air Side Solutions

The model RSV-CAVC / can be operated at a

constant or variable- flow rate to maintain the

designed air flow. In an occupied or unoccupied

demand with, a low pressure drop damper

automatically maintains design air-flows in a supply

or exhaust systems. Controlled without electrical or

pneumatic in a pressure independent system.

Building designs cannot compensate for pressure

changes that commonly occur because of duct-work

installation, stack effect, poorly completed air

balancing, transfer duct-work sizing poorly, fans

operating over time and could be running over

designed static pressures and aging damper

adjustments off over time.

RS-CAVC fit the designs, the solutions and your

toughest requirements.

Balancing time is shortened and cost are

decreased because the RS-CAVC is pressure

independent with accessible settings. Final air fan

RPM is decreased adding to additional and some

time over looked energy savings in the total

building design. A complete air side ventilation

solution.

Manufactured air-side soultions are for most air

side systems, including cooling, heating and

RS-CAVC-R

RS-CAVC-Q

RS-CAVC-R

RS-CAVC-IRP

Non- Electric

Electric

1

Office and hotelOver 1000 RS-CAVC

ROYAL SERVICE SUPPLIES

AIR SIDE SOLUTION

Operation

Simple clock work function, the control arm

connects to the damper. It’s armature stainless

steel feeler spring control (ASC). When the

pressure modulates, the ASC control assembly

maintains flow at a constant rate. By using the

static pressure effect the flow setting is maintained.

Air flow temperature range is (38-155 F) (10-50C)

Model R Round or Q rectangle units: Once installed

in to the duct-work, operates pressure

independently. You can field-set the flow against

the required flow. The valve maintains the flow with

a mechanical balance of a UL-94-V2 -compliant

bellows and its armature stainless steal feeler

spring control (ASC). When the pressure

modulates the ASC controls the flow at constant

rate. In variable flow mode, the flow setting is

changed with an actuator. A standard control signal

operates the actuator for a floating or modulating

control point operation. The ASC controls the flow

throughout the range of the signal.

Both round or rectangle units operate and maintain

as close as 5 % in the middle range and 10 % on the

outside range.

Lower air flow rates are adjustable.

Pressure ranges are 0.2 inch Wg to 4.0 Wg, (50-800

PA) ( high-, medium, low -pressure systems). Units

are pre-factory calibrated as required. No

additional inserts for pressures or flow is required.

IR available in plastic or metal.

UL 181 compliant.

Installation

Installs into Round or rectangle duct-work.

RS-CAVC-IR Insert type installs into a 4 inch round

duct-work.

The CAVC-R metal units construction and lip can be

installed with metal or flexible duct.

RS-CAVC type flows are designed for air flows of

(30 CFM to 2650 CFM(45 m3hr to 4510 m3hr)

RS-CAV-Q type flows are designed for air flows of

(80 CFM to 7050 CFM(135m3hr to 1250m3hr).

ERV/PAU UNITS

Hotel Rooms

Rest Rooms

Confrence Rooms

Lobbies

2

ROYAL SERVICE SUPPLIES

PA 50 75 125 249 498 747 995

Inwg 0.20 0.30 0.50 1.00 2.00 3.00 4.00

ALLModel

HIGH

Med

Low

FL

OW

Selection

RS-Royal Service CAVC - constant air volume control DR- Round with 24 volt damper actuator in front of the cavc for on-off / open and shut off control

Q- Rectangle inlet and out let models showing only width dimensions here.

Selection

RS-Royal Service

CAVC - Constant Air Volume control

DR- Round with 24 volt damper actuator in front of the CAVC for

on-off / open- shut off control

Q- Rectangle inlet and outlet models showing only width

dimensions here.

R- Round inlet, round outlet

IR- Galvanized Steel Round insert type, Insert into the duct-work.

IRP- Plastic Round insert type, Insert into the duct-work.

Range for air flow. Use the product catalogue for extra models

Diffuser

CAVC

Diffuser

CAVC

Diffuser

Ceiling

Fig. Z7

Apartment fresh air and exhaust, Single air fans,E.R.V, and PAU units.

Operation-range

3

Apartment buildings fresh air and exhaust

CFM MCHR CFM MCHR CFM MCHR

4 100 26 45 34 58 68 115

4 100 26 45 34 58 68 115

4 TO 8 100-200 50 85 305 518 609 1035

4 TO16 100-400 50 85 1327 2255 2654 4510

6 TO 30 160-800 79 135 1142 1940 2284 3880

RS-CAVC-DR100-200

RS-CAVC-R100-400

RSCAVC-Q160-800

SIZE

LOW Med High

AIR FLOW

RS-CAVC-IR100

RS-CAVC-IRP100

ModelsINCH MM

Ĭ ÑÕÑŃPÒŎŌĪ Ĭ ǼĪ ŎŘMÕ Ĭ ÑǾQÒŃÑ

FĖIJF ǼŃŎŌŒPMŌP MÒǾ QŎÕÞÖ Ñ ŃŎŌPǾŎÕ GĪ ǼĪ ŎÞŌŇ R ÒPO ČÇ QŎÕP ŇMÖŐÑǾ MŃPÞMPŎǾ ÒŌ ŅǾŎŌP ŎŅ POÑ ŃMQŃ ŅŎǾ ŎŌǼŎŅŅ C ŎŐÑŌ MŌŇ ŒOÞP ŎŅŅ ŃŎŌPǾŎÕ

Ï ǼĪ ÑŃPMŌŊÕÑ ÒŌÕÑP MŌŇ ŎÞP ÕÑP Ö ŎŇÑÕŒ ŒOŎRÒŌŊ ŎŌÕŘ R ÒŇPO ŇÒÖ ÑŌŒÒŎŌŒ OÑǾÑB

ERV/PAU UNITS

ROYAL SERVICE SUPPLIES

Operation

Warranty

Guaranteed two years from the date of shipment

against defects in material or workmanship when

the units are install correctly and under normal

standard clean air flow conditions. Limited

warranty to the repair or replacement of the

materials.

Maintenance

Under normal standard conditions, no maintenance

is required.

Non-standard is not recommended. Consult the

factory.

Supply Air

Return Air

AHUPAU

CAVC-DRCAVC-R or -Q

CAVC FilterOSA

Fresh Air

Economizer control

CO2

4

AHUPAU

Diffuser

CAVC

Diffuser

CAVC

Control flow to each zone Fig. 03

Filter bankAir flow maintained over filter life

Air flow constantFB

RSCAVC

Fig. 01

AHUPAU

CAVC Mall Areas

High/Medium pressure duct

CAVC

High pressure Required flow

Fig. 04High/Medium air pressure duct-work systems

RS-CAVC-Q

RS-CAVC-R

RS-CAVC-IRP

ROYAL SERVICE SUPPLIES

Applications

Correct Airflow

Correct Airflow

Before RS CAVC installation

After RS CAVC installation

Installation changes

During operation, air dynamics change pressure

and flow from air filters to system dampers. The

CAVC will automatically change and maintain the

setting when there is a decrease or increase in the

static building pressures the damper modulates

and adjusts it self.

If the design was not correct, then the field can

adjust the damper to increase or decrease the flow

in the range of the damper.

Dirty filters will decrease the flow. With CAVC R-Q

it automatically adjusts.

Design of duct work changes during installation

Co2 changes set minimum and maximum air-flow

using a actuator connected to a Co2 sensor via

Indoor Air Quality

Specified outside / exhaust air is maintained.

Controllable outside / exhaust air is maintained.

You can set required code air flow.

Install with energy recovery ventilation (ERV).

Hotels complies with title 24 section 120.2.

Lab control of supply air.

Supply Air

Return Air

ERV

CAVC-R CAVC-R

5

RS-CAVC-Q

RS-CAVC-R

RS-CAVC-IRP

ROYAL SERVICE SUPPLIES

Applications- For Fan Control

Installation changes

Supply or exhaust units

Supply fans can now be adjusted without a fan-

motor variable speed drive (VSD), or SCR.

It is installed after the fan and the fan does not load

more then the air flow required therefore the motor

operates with the fan laws.

No fan speed control

6

AHUPAUFC

PCAVC

Lower CFM or increase CFM.(DX system adjust only to min allowable flow)

Modulating control

Air flow control

Fig. 02

ROYAL SERVICE SUPPLIES

Applications Large or small Individual zoning

Zone Applications

Supply a single zone for multiple diffusers.

Single diffuser for individual zone

No room sensor constant air flow.

Automatic control with a 24 volt damper motor

actuator and a room sensor installed, min and max

flows are adjustable. BA systems can operate

different flows for occupied or unoccupied times

and demands.

Heating flows and cooling flows are adjustable.

Manual control at the unit or install a cord adjustor.

7

Fig. Z1

Diffuser

CAVC

Diffuser

Ceiling

Fig. Z2

Diffuser

CAVC

Exhaust, room, restrooms, lobbies, and floor corridors.

Supply air zones for Rooms, Laboratories, and general areas

ROYAL SERVICE SUPPLIES

Apply with all Hard Ceiling Zones with manual ceiling adjustors

HSZ

Hard ceilings require damper

adjustments at the ceiling. Installing a

metal cable attached to the RS-RS-CAVC.

With the RS-CAVC air-flow adjustment are

made in the zones. Air Flow adjustments

not damper adjustment you’re in control

not the damper !

Installing a RS-CAVC inside a closed ceiling with a

cable regulator a perfect air adjustment is possible.

TAB is completed without a 2nd change in air

balance in other zones.

The difference is adjusting the air flow not adjusting

the damper.

Make VSD automatically resets and keep the air

flow without further adjustments to CAVC’s.

Once set, the air flow is regulated by pressure

independently a constant flow

Install with metal cable damper adjustors.

Save energy in all applications!

8

CAVC

(Set once or make a readjustment . All others CAVCdo not need readjustment)

Manual cable key

Hard ceiling

You control air flowNot the damper

Fig. Z4

ROYAL SERVICE SUPPLIES

Title 24 Section 120.1

Zone

Mechanical Ventilation of each space (MVS)

Must be capable of providing a rate no less than the

largest air-flow design.

Meeting area with predetermined occupied and

unoccupied space.

The minimum rate shall be supplied to each space

in time of occupancy

(MVS) from the Fresh Air Handler, a constant flow

is controlled into the space the RS-CAVC can

control at no less then design

Demand Control Min and Max flow without

expensive controls

Constant flowCAVC

Min to Max (variable) air flowCAVCDamper

ActuatorDemand control(CAVC with damper)

Maintain no less than design

Title 24 Section 120.1 © Demand control CO2 sensors

Zone

CO2 sensors installed to control demand ventilation

CAVC can change flow. Simple floating actuator

can adjust flow to the required rate.

Connections to CO2 directly in small zones and

linked connections for larger zones

9

Fig. Z5

Electric

Non-electric

CAVCActuator

CNT

Co2 sensors(Min & Max air flow)

occupied sensor or DDC control demand./

Electric

Fig. Z6

CO2

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Hotel Title 24 Section 120.2 (f)

Zone

120.2 (f) requires dampers supply and exhaust

must close upon fan shut down.

RS-CAVC-DR with an open / close damper

operates a damper to open and close on demand.

ActuatorDamper CAVC Hotel room

120.2(F)

10

Fig. Z3

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ROYAL SERVICE SUPPLIES

1712 New Ave., San Gabriel, Los Angeles County, California 91776, U.S.A.

TEL: 1-626-281-6850 FAX: 1-626-2938848 E-MAIL: sales@royalservice.com

CAT:RSSCAVC150225