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Technical Instructions
Document Number 155-524P25
March 2, 2007
Maintenance
Diagrams
Page 8
The room thermostat is completely maintenance-free. If inoperable, replace entire unit.
WARNING:
High voltage. Disconnect power before servicing. Metal part is not
grounded.
Heating Mode
RAB10 Series Two-pipe Fan Coil Room Thermostat
L
M1
N
N1
G1
G2
G3
ZV
W/Y Control output actuator
Figure 5. Wiring.
Cooling Mode
Figure 6. Operating.
Operating voltage
3-speed fan
Neutral
Room thermostat
Control output fan speed I
(Low)
Control output fan speed II
(Medium)
Control output fan speed III
(High)
Zone valve or thermal valve
T
Room temperature
SD Switching differential
SP Room temperature
setpoint
W
Valve output signal
heating
Y
Valve output signal
cooling
Siemens Industry, Inc.
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