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