83
TECHNICAL CHARACTERISTICS - TEMPERATURE SENSORS
The table below gives the relationship between temperature and resistance for the following sensors; ow thermistor,
return thermistor, header thermistor.
Temperature in
o
C Resistance in ohm Temperature in
o
C Resistance in ohm
10 19,900 60 2490
20 12,490 70 1750
30 8,060 80 1250
40 5,330 90 910
50 3,600 100 680
82
0-10V INTERFACE
Set the boiler to accept a 0-10V input
(see Frame 27)
no
Is the boiler set to accept a 0-10V Input?
yesyes
Set the boiler to On Mode (see Frame 28)
no
Is the boiler set to On Mode?
yesyes
Ensure between 2V and 10V is correctly
connected to these terminals from the
external device
no
Is a voltage of between 2V and 10V being supplied to
(D), with positive and negative connected correctly?
yesyes
Replace Master PCB
Master PCB Box
D
Master PCB Box
57
- Installation & Servicing
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