External Room Thermostat Control (Optional) - Panasonic WH-UD05JE5 Service Manual

Boiler signal turns OFF when
o
 Outdoor ambient > Outdoor Ambient Set + [2°C] OR
 Heat pump not operates at tank side. OR
 Boiler prohibit flag = 1
Boiler prohibit flag control
Purpose:
For product safety. Boiler signal is OFF when water temperature is too high.
o
Start condition:
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.
o
Contents:
 After start condition fulfilled, set boiler prohibit flag = 1
Cancel condition:
After 30 minutes from start condition fulfilled.
o
Contents:
 Set boiler prohibit flag = 0

14.21 External Room Thermostat Control (Optional)

Purpose:
1 Better room temperature control to fulfill different temperature request by external room thermostat.
Recommended external room thermostat:
Connection of external room thermostat:
Wire Connection and thermo characteristic of Siemen REV200:
Setting
Set Temp < Actual Temp
Set Temp > Actual Temp
Indoor Unit
9 : Terminal Board No.
Wire Connection and thermo characteristic of Siemen RAA20:
Setting
Set Temp < Actual Temp
Set Temp > Actual Temp
Maker
Siemen (REV200)
Siemen (RAA20)
L/L1 (H)
Open Circuit
Short Circuit
9
10
Cooling 11
Heating
12
Connect only heating line for heating only model. And connect both
heating and cooling line for heat + cool model.
L/Y1 (H)
Open Circuit
Short Circuit
Characteristic
Touch panel
Analog
Heat Thermo
OFF Short Circuit
ON Open Circuit
L (label)
L1 (label)
L2 (label)
Heat Thermo
OFF Short Circuit
ON Open Circuit
155
L/L2 (C) Cool Thermo
OFF
Siemen REV200
L/Y2 (C) Cool Thermo
OFF
ON
ON