Siemens RAB10 Series Betriebsanleitung

Siemens Industry, Inc.

RAB10 Series

Technical Instructions

Document No. 155-524P25

ET RAB-1

March 2, 2007

Two-pipe Fan Coil Room

Thermostat with Manual

Changeover

Description Two-wire, gas diaphragm-based fan coil room thermostat with heating or cooling

sequence for two-pipe fan coil applications.

Features •Manual, three-speed fan switch

•Dual setpoint temperature scale

•Fan release function

•Two-point control algorithm (On/Off)

•24 to 120 Vac, 277 Vac operating voltage

•Manual changeover switch

•Two mounting styles: electrical wall box or drywall

•Wall plate adapter (ARG70) included with electrical wall box mount styles

Application Typically used in commercial, high-rise and light industrial buildings in conjunction with:

•Zone valves

•Thermal valves

•Fans

Product Numbers See Table 1.

Technical Design The RAB10... fan coil room thermostat is based on a two-wire, gas diaphragm

technology.

Operation

Heating Mode

When the heating mode is manually selected, and the room temperature falls below the

selected setpoint, the heating contact is closed.

Cooling Mode When the cooling mode is manually selected, and the room temperature rises over the

selected setpoint, the cooling contact is closed.

Technical Instructions RAB10 Series Two-pipe Fan Coil Room Thermostat

Document Number 155-524P25

March 2, 2007

Page 2Siemens Industry, Inc.

Operation,

Continued

Fan Speed

The fan control speed can be controlled two ways:

•Manually, using the three-speed fan switch on the thermostat cover for continuous

operation. (Low), (Medium), (High).

•Automatically, by switching to the selected fan speed using the thermostat for

controlled operation. Prior to commissioning, the jumper position corresponding to

the thermostat function must be selected.

Fan Release Setting There are two jumper position choices on the printed circuit board:

−Jumper SR1 Selected fan speed as continuous operation

−Jumper SR2 Auto Fan is switched at the same time as the valve

Ventilation When the ventilation function is selected (RAB10.1..), the heating and cooling contacts

are always open and the fan works at the selected speed.

Changeover The control algorithm can be selected with a switch located on the front of the controller

(change over switch).

Adjustments The required temperature can be selected by a rotating setpoint adjuster at the front of

the thermostat.

High and low setpoint limit stops can be engaged to limit temperature range.

Table 1. Product Numbers.

Mounting Style Product Number Description

Electrical Wall Box

(with wall box

adapter)

RAB10.1UW 2-pipe; manual changeover; degrees

Fahrenheit and Celsius; fan only

function

Drywall RAB10.1U 2-pipe; manual changeover; degrees

Fahrenheit and Celsius; fan only

function

Accessory ARG70 Wall Box Adapter

Warning/Caution Notations

WARNING: Personal injury, or loss of life may occur if

you do not perform a procedure as

specified.

CAUTION: Equipment damage, or loss of data may

occur if you do not follow a procedure as

specified.

RAB10 Series Two-pipe Fan Coil Room Thermostat Technical Instructions

Document Number 155-524P25

March 2, 2007

Siemens Industry, Inc. Page 3

Specifications Operating voltage 24 to 120 Vac, 277 Vac

Frequency 50/60 Hz

Setpoint adjustment range 50°F to 85°F (10°C to 30°C)

Setpoint limit stops Adjustable

Switching differential (SD) ≤1.8°F (1°C), fixed

Switch rating 6A RES, 3.5A FLA, 12A LRA

Switch action Single-Pole, Double-Throw (SPDT)

Selector switch Off/Low/Medium/High

Weight 5 oz. (0.14 kg)

Dimensions 3.80 × 4.45 × 1.68 inches

(96.4 × 113.1 × 42.8 mm)

Color Ivory white with gray selector knobs

Ambient Conditions

Operation

Temperature 32°F to 122°F (0°C to 50°C)

Relative humidity <95%

Transport/Storage

Temperature –4°F to 122°F (–20°C to 50°C)

Relative humidity <95%

Wiring

Screw terminals for wires of 2 × 16 AWG or 1 × 14 AWG

Minimum 20 AWG

Housing

Material Plastic

Enclosure rating NEMA1

Bellows Environmentally-friendly gas

Agency Certification

Conforms to CE requirements

UL listed to 893 (E35918)

cUL listed to Canadian standard

C22.2 No. 24-93

Table 2. Control Valves.

Part Number Description Technical

Instructions

SFA71U 24V NC

155-521

SFA11U 120V NC

SFA208V/25 208V NC

SFA277V/25 277V NC

FTA71 24V NC 155-109

599 Series Zone

Valves Two-way

Three-way 155-320P25

Technical Instructions RAB10 Series Two-pipe Fan Coil Room Thermostat

Document Number 155-524P25

March 2, 2007

Page 4Siemens Industry, Inc.

Mounting •Locate the unit where the air temperature can be sensed as accurately as possible.

•Do not mount in direct sunlight or near other heat or refrigeration sources.

•Mounting height is approximately 60 inches (1.5 m) above the floor.

•The unit can be fitted to most commercially available recessed conduit boxes or

directly on the wall.

Figure 1. Recommended Mounting Locations.

(Dimensions in Inches)

WARNING:

1. This unit can be installed by authorized personnel only.

2. The unit must be de-energized and the operating voltage checked

before opening.

•An ARG70 wall plate adapter (provided with electrical wall box mount models) must

be used to mount to a 2 × 4-inch or 4 × 4-inch electrical wall box.

•An ARG70 wall plate adapter must be used to meet UL and cUL requirements.

•The thermostat must be mounted on a flat wall.

•All local electrical regulations must be complied with.

•If there are radiator valves in the room, set them to their fully open position.

Setpoint Limit Stops

Adjustment To set limit stops, remove gray tabs located on the setpoint knob and position high and

low stops around the perimeter of knob as required. Each position on the setpoint dial is

1.8°F. See Figure 2.

Installation

Required Tools

•Small, flat-blade screwdriver

•1/4-inch drill bit

•Drill motor

•Small mallet

•Pencil

RAB10 Series Two-pipe Fan Coil Room Thermostat Technical Instructions

Document Number 155-524P25

March 2, 2007

Siemens Industry, Inc. Page 5

Drywall Mounting 1. Loosen the two screws at the bottom of thermostat.

2. Lift the bottom of the thermostat cover from the thermostat base and push up to

remove cover.

3. Remove sub-base from back of thermostat.

4. Using the sub-base (packed with thermostat) as a template, mark the hole locations

with a pencil.

5. Drill two 1/4-inch diameter holes for plastic wall anchors (provided).

6. Using a mallet, tap in the plastic wall anchors flush with wall.

7. Pull the wiring through the opening in the upper portion of the sub-base.

8. Level mounting plate.

9. Using the two wood screws provided, fasten sub-base to wall. Thermostat is not

position sensitive.

10. Pull the wiring through the sub-base.

11. Position thermostat housing over the two mounting lugs located at the top of the

sub-base, and press down on cover until bottom lugs snap in place.

12. Terminate wires per wiring instructions on the inside of thermostat cover.

Optional: To set limit stops, remove gray tabs located on the setpoint knob and

position high and low stops around perimeter of knob as required.

Figure 2. Setpoint Limit Stops.

13. Place all thermostat switches in the “down” position to allow cover switch sliders to

fit over the switches.

14. Insert the top of the thermostat cover into the slots located on the top of the

thermostat and press down.

15. Tighten the two screws at the bottom of the thermostat.

16. Return selector switches to the normal position. Adjust setpoint dial to desired

setting.

The installation is now complete.

Technical Instructions RAB10 Series Two-pipe Fan Coil Room Thermostat

Document Number 155-524P25

March 2, 2007

Page 6Siemens Industry, Inc.

4 × 4-inch Electrical Wall

Box Mounting An ARG70 wall plate adapter is required to mount an RAB… thermostat to a 4 × 4-inch

electrical wall box. The ARG70 wall plate adapter is included with electrical wall box

mount models.

1. Loosen the two screws at the bottom of thermostat.

2. Lift the bottom of the thermostat cover from the thermostat base and push up to

remove cover.

3. Using the four screws provided, fasten wall box adapter (3) to plaster ring (2),

supplied by others.

4. Pull wires through plaster ring (2).

5. Flex adapter mask (4) and snap in place inside wall box adapter (3).

6. Fasten sub-base (5), included with thermostat, to wall box adapter assembly (3)

and (4) with the two screws provided.

7. Follow Drywall Mounting Steps 7 through 16.

The installation is now complete.

Figure 3. 4 × 4-inch Electrical Wall Box Installation.

1 Electrical wall box

2 Plaster ring

3 Wall box adapter *

4 Adapter mask *

* Included with ARG70

5 Sub-base

6 Thermostat base

7 Thermostat cover

RAB10 Series Two-pipe Fan Coil Room Thermostat Technical Instructions

Document Number 155-524P25

March 2, 2007

Siemens Industry, Inc. Page 7

2 × 4-inch Electrical Wall

Box Mounting An ARG70 wall plate adapter is required to mount an RAB… thermostat to a 2 × 4-inch

electrical wall box. The ARG70 wall plate adapter is included with electrical wall box

mount models.

1. Loosen the two screws at the bottom of thermostat.

2. Lift the bottom of the thermostat cover from the thermostat base and push up to

remove cover.

3. Using the two screws provided, fasten wall box adapter (3) to plaster ring (2),

supplied by others.

4. Pull wires through plaster ring (2).

5. Flex adapter mask (4) and snap in place inside wall box adapter (3).

6. Fasten sub-base (5), included with thermostat, to wall box adapter assembly (3)

and (4) with the two screws provided.

7. Follow Drywall Mounting Steps 7 through 16.

The installation is now complete.

Figure 4. 2 × 4-inch Electrical Wall Box Installation.

1 Electrical wall box

3 Wall box adapter *

4 Adapter mask *

* Included with ARG70

5 Sub-base

6 Thermostat base

7 Thermostat cover

Technical Instructions RAB10 Series Two-pipe Fan Coil Room Thermostat

Document Number 155-524P25

March 2, 2007

Page 8Siemens Industry, Inc.

Maintenance The room thermostat is completely maintenance-free. If inoperable, replace entire unit.

WARNING:

High voltage. Disconnect power before servicing. Metal part is not

grounded.

Diagrams

L Operating voltage

M1 3-speed fan

N Neutral

N1 Room thermostat

G1 Control output fan speed I

(Low)

G2 Control output fan speed II

(Medium)

G3 Control output fan speed III

(High)

ZV Zone valve or thermal valve

W/Y Control output actuator

Figure 5. Wiring.

T Room temperature

SD Switching differential

SP Room temperature

setpoint

W Valve output signal

heating

Y Valve output signal

cooling

Heating Mode Cooling Mode

Figure 6. Operating.

RAB10 Series Two-pipe Fan Coil Room Thermostat Technical Instructions

Document Number 155-524P25

March 2, 2007

Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as

design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners.

Siemens Industry, Inc.

Building Technologies Division

1000 Deerfield Parkway

Buffalo Grove, IL 60089

+ 1 847-215-1000

Your feedback is important to us. If you have

comments about this document, please send them

to SBT_technical.editor.us.sbt@siemens.com

Document No. 155-524P25

Printed in the USA

Page 9

Dimensions

Dimensions in inches

(millimeters)

Figure 7. RAB10… Unit.

Figure 8. Base Plate.

Figure 9. ARG70.

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