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General| Brand | Siemens |
|---|---|
| Model | RAB20 Series |
| Category | Thermostat |
| Language | English |
Two-wire, gas diaphragm-based thermostat for heating or cooling systems.
Automatic changeover, manual three-speed fan, dual setpoint scale, 24-120/277 Vac.
Used in commercial, high-rise, light industrial buildings with zone valves, fans, etc.
See Table 1 for specific product numbers and descriptions.
ARG70 Wall box adapter.
Two-wire, gas diaphragm technology for fan coil room thermostat.
Heating contact closes below setpoint; cooling contact closes above setpoint.
Manual or automatic fan speed control via switch or jumpers.
Jumper settings for fan control based on operation mode.
Heating/cooling contacts open, fan runs at selected speed.
Automatic changeover based on room temp and external aqua sensor.
Setpoint selected by dial; limit stops can limit temperature range.
High voltage warning: Disconnect power before servicing.
Details operating voltage, frequency, setpoint range, switching differential, and ratings.
Specifies operating and storage temperature and humidity ranges.
Covers wire terminal sizes and enclosure material/rating.
Lists compliance with CE, UL, and cUL standards.
Guidance on selecting the best location for accurate temperature sensing.
Covers fitting to conduit boxes, flat wall mounting, and compliance.
Lists tools required for installation, including screwdriver and drill.
Procedure to set temperature range limits using gray tabs.
Steps for removing the thermostat cover and mounting the sub-base.
Instructions for pulling wires and fastening the housing to the sub-base.
Steps for attaching the cover, setting switches, and adjusting the setpoint.
Fastening wall box adapter to plaster ring for mounting.
Snapping adapter mask and fastening sub-base to wall box assembly.
Referencing drywall mounting steps for completion of installation.
Fastening wall box adapter to plaster ring for mounting.
Snapping adapter mask and fastening sub-base to wall box assembly.
Referencing drywall mounting steps for completion of installation.
Thermostat is maintenance-free; replace if inoperable.
Schematic showing connections for thermostat, fan, valves, and sensors.
Illustrations of heating and cooling modes with setpoint and differential.
Detailed dimensions in inches and millimeters for the thermostat unit.
Dimensions for the thermostat base plate, showing mounting holes.
Dimensions for the ARG70 wall plate adapter.
