CE1N3002E
05.09.2003
Siemens Building Technologies
HVAC Products
3
002
Room Thermostat RAA20
Adjustable for heating only or cooling only
Two-position control
Switching voltage AC 24…250 V
Use
The RAA20 room thermostat is used in heating only or cooling only systems to maintain
the selected room temperature.
Typical use:
• Residential buildings
• Light industrial buildings
In conjunction with
• zone valves, thermal valves
• gas or oil burners
• fans
• pumps
Functions
The RAA20 room thermostat has separate outputs for heating only and cooling only.
If the room temperature falls below the selected setpoint, the heating contact will close.
If the room themperature exceeds the selected setpoint, the cooling contact will close.
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