RAB20 Series Two-pipe Fan Coil Room Thermostat Technical Instructions
Document Number 155-526P25
March 2, 2007
Siemens Building Technologies, Inc. Page 3
Warning/Caution Notations
WARNING:
Personal injury, or loss of life may occur if you do
not perform a procedure as specified.
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)
Output 2-position (On/Off)
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 873 (E35918)
cUL listed to Canadian standard
C22.2 No. 24-93
Table 2. Control Valves.
Part Number Description Technical Instructions
SFA71U 24V NC
SFA11U 120V NC
SFA208V/25 208V NC
SFA277V/25 277V NC
155-521
FTA71 24V NC 155-109
599 Series Zone
Valves
Two-way
Three-way
155-320P25
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