Technical Instructions
RAB20 Series Two-pipe Fan Coil Room Thermostat
Document Number 155-526P25
March 2, 2007
Page 4
Siemens Building Technologies, 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 thermostatic radiator valves in the reference room, set them to their fully
open position.
Installation
Required Tools
•
•
•
•
•
Pencil
Small, flat-blade screwdriver
1/4-inch drill bit
Drill
motor
Small
mallet
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 (1°C). See Figure 2.
