T-M50 / T-M50 ASME Service Manual
Ver. 1.05
77
CONFIDENTIAL
<Deactivate condition>
When the computer checks for these temperatures during the fan motor operation as freeze
protection, the Automatic fan motor system will deactivate if:
T
out
> T
in
+
3.6°F
OR
T
in
> 45°F and T
out
> 45°F and T
MIX
> 45°F
OR
T
in
> 39°F and T
out
> 39°F and T
MIX
> 39°F and “Flow sensor detects flow rate for 1min”
where T
in
is the temperature of inlet thermistor and T
out
is the temperature of the output
thermistor and T
MIX
is the temperature of the mixing thermistor.
