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Siemens Building Technologies Room Thermostat RAA20 CE1N3002E
HVAC Products 05.09.2003
Y1
T[°C]
ON
OFF
W
SD
3001D01
Y2
T[°C]
ON
OFF
SD
3001D02
T Room temperature
SD Switching differential
w Room temperature
setpoint
Y1 Output signal "Heating"
Y2 Output signal "Cooling"
Equipment combinations
Type of unit Type reference Data sheet
Motoric on/off actuator
SFA21...
4863
Thermal actuator (for radiator valve)
STA21...
4893
Thermal actuator (for small valve 2,5 mm)
STP21...
4878
Accessories
Description Type reference
Adapter plate 120 x 120 mm for 4“ x 4“ conduit boxes ARG70
Adapter plate 96 x 120 mm for 2“ x 4“ conduit boxes ARG70.1
Adapter plate for surface wiring 112x130 mm ARG70.2
Technical design
Key features of the RAA20 room thermostat:
• Two-position control
• Gas-filled diaphragm
Adjustments
The required temperature is selected by a setpoint adjuster on the front of the thermo-
stat.
The setpoint setting range can be mechanically limited by means of setpoint limiter
under the unit cover.
Notes
The room thermostat should be located where the air temperature can be sensed as
accurately as possible, without getting adversely affected by direct solar radiation or
other heat or refrigeration sources.
Mounting height is about 1.5 m above the floor.
The unit can be fitted to most commercially available recessed conduit boxes or directly
on the wall.
Only authorised personnel may open the unit to perform service. (Caution: AC 250 V)
The unit must be isolated from the mains supply before opening.
Function diagrams
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Mounting, installation
and commissioning
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