131
12.20 External Room Thermostat Control (Optional)
Purpose:
1 Better room temperature control to fulfill different temperature request by external room thermostat.
Recommended external room thermostat:
Maker Characteristic
Siemen (REV200)
Touch panel
Siemen (RAA20)
Analog
Connection of external room thermostat:
Wire Connection and thermo characteristic of Siemen REV200:
Setting
L/L1 (H)
Heat Thermo
L/L2 (C)
Cool Thermo
Set Temp < Actual Temp
Open Circuit OFF Short
Circuit ON
Set Temp > Actual Temp
Short Circuit
ON
Open Circuit
OFF
Cooling
Heating
Siemen REV200
Connect only heating line for heating only model. And connect both
heating and cooling line for heat + cool model.
Indoor Unit
9
L (label)
10
11
12
L1 (label)
L2 (label)
9 : Terminal Bord No.
Wire Connection and thermo characteristic of Siemen RAA20:
Setting
L/Y1
(H) Heat
Thermo L/Y2
(C) Cool
Thermo
Set Temp < Actual Temp
Open Circuit OFF Short
Circuit ON
Set Temp > Actual Temp
Short Circuit
ON
Open Circuit
OFF
Cooling
Heating
Siemen RAA20
Connect only heating line for heating only model. And connect both
heating and cooling line for heat + cool model.
Indoor Unit
9
L (label)
10
11
12
Y1 (label)
Y2 (label)
9 : Terminal Bord No.
Control Content:
External room thermostat control activate only when remote thermostat connection select YES by Indoor
control panel.
When indoor running heat mode, refer thermo On/Off from heating line feedback. And when indoor running
cool mode, refer thermo On/Off from cooling line feedback.
Heat pump Off immediately when receive thermo off feedback.