KDB-GOM
Series
- 28 -
4
.17 Wiring Diagram
4
NO
Function
NO
Function
1, 3
Gas Valve 1
7, 12
Ignition Transformer
2, 3
Gas Valve 2
8, 12
3-Way Hot Water
4, 11
AC 220V
9,13
3-Way Heating
5, 6
Circulation Pump
10
Ground
NO
Function
NO
Function
1, 11
Water Filling
9, 20
Room Thermostat
2, 12
Fan
3, 13
Control Voltage
4
RPM Power Source
14
RPM Input
5, 15
Heating Temp.
Sensor
15
RPM Ground
6
16
Flame Detector
7, 20
Air Pressure
Switch
17
Heating Flow Sensor
8, 20
Hot Water
Flow Switch
18, 19
Overheat
NO
Function
NO
Function
1,5
AC 20V
4,7
AC 12V
2,6
AC 40V
8,9
AC 220V
3
AC 200V
4.17.3.3 21 Pin Wiring Connecting Diagram
4.17.3.2 9 Pin Wiring Connecting Diagram
4.17.3.1 13 Pin Wiring Connecting Diagram
4.17.3 Wiring Connecting Diagram
4.17.1 Fault repair codes (room thermostat, FR-5)
NO
ON
OFF
1
Trial Run
Normal
2
Forced Max.
Combustion
Normal
3
Forced Min.
Combustion
Normal
4
FE
FF
5
L.P. Gas
Natural Gas
6
Close-Air Type
Open Tank System
7
50 Hz
60 Hz
NO
161GOM
201GOM
251GOM
301GOM
8
OFF
OFF
ON
OFF
9
ON
ON
OFF
OFF
10
ON
OFF
ON
ON
4.17.2 DIP S/W Setting on Main Controller
FND
No.
Problems
FND
No.
Problems
01
Overheat
10
Air pressure failure
02
Low water level
11
Water level detection failure
03
Ignition failure
12
Flame failure in combustion
04
Flame sensor
(Lower gas pressure)
13
Heating water switch failure
05
Heating sensor wire
disconnected
14
Gas alarm(optional)
06
Short circuit of
heating sensor
15
MICOM failure
07
Hot water sensor wire
disconnected
16
Mechanical overheat
08
Short circuit of
hot water sensor
17
DIP switch setting error
09
Fan R.P.M. failure
18
