19
The fan control switch features normally
open 230V contacts, and is wired to control
the live supply to the fan motor . When the
circuit is made, the fan will switch on when
the heat anticipator has closed the fan
switch contacts. When the thermostat or
time switch shuts down the burner, the fan
will continue to run until the thermal switch
has cooled sufficiently to prevent the
residual heat from damaging the heater or
its controls.
On start up the fan delay prevents air being
circulated until the desired temperature is
achieved
Limit control
(red button)
SET at 100
c
An adjustable high temperature manual
reset limit control. If this control needs
resetting the cause should be determined
and rectified immediately.
Caution
The power supply to the fan must not be
interrupted, the only time when power
supply can be disconnected or interrupted is
during servicing or in emergencies.
If there is a requirement for the heater to be
switched off over night then the gas valve
circuit should be opened via a time switch,
etc, as per the wiring instructions and
diagrams supplied within section 6.0 of this
manual.
Summary of Contents for HT2000
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