Flagro FVNP-200RC Operating Instructions Manual page 12

TEMPERATURE FEELER GAUGE ADJUSTMENT
(ATTACHED TO FAN SWITCH)
The temperature feeler gauge is required to be always touching the heater exchanger.
The temperature feeler gauge controls the air flow over the fan switch, which eliminates any
unnecessary fan cycling. The temperature feeler gauge can be adjusted for different outside
temperatures, by rotating the location of the temperature feeler gauge holes. This will
provide maximum performance of the unit in different applications.
If supply air is warm (-5° C, indoor application):
Turn the temperature feeler gauge so that the holes are parallel with the heat exchanger.
This will help the fan switch to remain cool and not overheat. See following:
If supply air is cold (under -5° C):
Turn the temperature feeler gauge so that the holes are closed off as the air goes over the
heat exchanger. This will reduce fan cycling and the unit from shutting down.
See following:
In extreme cold conditions, cover the holes on the temperature feeler gauge using foil tape.
Ensure that the temperature feeler gauge is readjusted for warmer weather conditions.
Failure to do so may result in burning out fan switches – not covered under warranty.
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