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Wiring Diagram
(continued)
Legend
1
Outside Temperature Sensor
Flow Temperature Sensor/Low Loss Header
2
3
Boiler Water Temperature Sensor
DHW Temperature Sensor
5
11
Ionization Electrode
15
Flue Gas Temperature Sensor
20
Boiler Pump
20A
System Pump
DHW Pump
21
28
DHW Re--circulation Pump
Flow Switch (2X)
Gas Valves
Power Supply
Fixed High Limit
Fault Alarm Output
Ignition Transformer
Power Supply Accessory (Not Used)
Fan Motor
Fan Motor Control
143
External Blocking Terminals 2--3
External Demand Terminals 1--2
External Heating Program Changeover
Terminals 1--2
The Allocation of the Function "External
Heating Program Changeover" is Set
Via Coding Address '91'
144
External 0--10V Signal
KM BUS to PPM/Accessories
Gas Modulation Coil
190A
Gas Modulation Coil
Additional Information
A1 Main PCB (GC131 Ignition Module)
A2 Internal Power Supply Unit
A3 Optolink
A4 Burner Control Unit
A5 Programming Unit
A6 Coding Card
A7 Connection Adapter
A8 LON/Cascade Communication Module
S1 ON/OFF Switch
S2 Reset Button
X.. Electrical Interfaces
BK BLACK
WH WHITE
G
GREEN
RD RED
GY GREEN/YELLOW
BN BROWN
BL
BLUE
69
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