53
Components
Measuring point
Standard values
Notes
CN/
Con.re
Wiring
colors
Electric power supply cable
1
Bl-Br
AC 195.5~253V
Circulating pump
2
Br-Bl
AC 195.5~253V
Working
Three-way valve
3
Br-G
AC 195.5~253V
In mode CH
Bk-G
AC 195.5~253V
In mode DHW
Anti-freeze resistances
4
Y-W
AC 195.5~253V
Working
External circulating pump
5
Bk-Bl
AC 195.5~253V
Working
Scintillator
6
G-G
AC 195.5~253V
Working
Combustion fan
7
R-Bk
DC 2~54V
Working
Y-Bk
DC 10~14V
Anti-freeze thermistor
8
Br-Br
-10°C : 16.5~18.1kΩ
0°C : 9.6~12.2kΩ
10°C : 6.3~7.9kΩ
20°C : 4.2~ 5.2kΩ
Disconnect the thermistor
and measure the
resistance
Domestic hot water thermistor
W-W
15°C : 11.9~13.3kΩ
30°C : 6.7~ 7.41kΩ
45°C : 4.0~ 4.3kΩ
60°C : 2,4~ 2.6kΩ
20°C : 0.7~ 0.9kΩ
Disconnect the thermistor
and measure the
resistance
Return temperature thermistor CH
Bk-Bk
Discharge temperature thermistor CH
G-G
Exhaust temperature thermistor
Bk-Bk
Rinnai Chronothermostat
9
W-W
DC 10V~14V
External temperature thermistore
10
Br-Br
-20°C : 26.7~29.8kΩ
-10°C : 16.5~18.1kΩ
0°C : 9.6~12.2kΩ
10°C : 6.3~ 7.9kΩ
20°C : 4.2~ 5.2kΩ
Disconnect the thermistor
and measure the
resistance
Overheating circuit
12
Bk-Gr
DC 10V~14V
R-Gr
DC 10V~14V
Flame sensor
13
Bk-TERRA
AC 0V
In standby
AC 50~100V
Working
Emergency switch
14
Bk-Bk
DC 4.5V~5.5V
Speed control pump
15
Br-Bl
Working pump:
DC 0.01V~1.0V
Pump off:
DC 4.5V~5.5V
Bk-Bl
Working pump:
DC 0.1V~1.5V
Pump off:
DC 4.5V~5.5V
Gas valve
16
W-Br
DC 10V~14V
Measure the voltage with
valve ON;
Measure reistance with
valve OFF
Ambient thermostat (other label)
17
Bl-Bk
DC 4.5V~5.5V
Body controller
19
Bl-Bk
DC 4.5V~5.5V
R-Bk
DC 10V~14V
Domestic hot water flow switch
21
Bk-Bk
DC 4.5V~5.5V
In standby
Bk-Bk
DC 0V~0.5V
Working