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Start condition:
o Water
o Water
outlet
≥ 85°C continues for 5 minutes.
o Water
inlet
≥ 85°C continues for 5 minutes.
o Zone1
water
temp
≥ 75°C continues for 5 minutes.
o Zone2
Water
temp
≥ 75°C continues for 5 minutes.
Contents:
After start condition fulfilled, set boiler prohibit flag = 1
Cancel condition:
o After 30 minutes from start condition fulfilled.
o After 30 minutes from start condition fulfilled.
Contents:
Set boiler prohibit flag = 0
12.19 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:
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.
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.
heating and cooling line for heat + cool model.
Indoor Unit
9
L (label)
10
11
12
Y1 (label)
Y2 (label)
9 : Terminal Bord No.
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