Thermolec Plenum Heater - Manual (Page 8)

START UP AND SEQUENCE OF OPERATION
1 - The heater is supplied with a built-in 3 position mode selector switch.
« » position - Electric heat.
« » position - Heating by means of original furnace.
« » position - Dual-energy mode.
In the "electric" mode the room thermostat will call upon the electric heater to maintain the house temperature at the
level desired by the user. In the "oil" mode the oil furnace is ready to respond to the house thermostat's call for heat.
The third position or "Dual-Energy" mode gives automatic control to the outdoor thermostat or other switching signal
for dual-energy control. When the contacts are closed, the electric mode is selected. When the contacts are open,
the oil mode is selected. A green pilot light indicates the mode in operation.
2- a. Do required fields tests after installation of the Add-on Heater as detailed on page 2.
b. Turn ON the disconnect switch controlling the heater.
c. Simulate a heating demand by setting the room thermostat above the room temperature.
d. Switch the mode selector to position « ». The fan will start and the heating elements will come on in
sequence at 5 seconds interval (wait approx. 2 minutes) .
e. Measure the amperage drawn by the heater and compare it with the one shown on the nameplate.
f. Lower the heating demand by setting the room thermostat. All the relays will disconnect and the amperage
should go down to zero (wait approx. 2 minutes).
g. Switch the mode selector to position « » and check if the burner responds to thermostat demand.
h. Switch the mode selector to the dual-energy position « ». If you jump terminals S1 and S2 the electric mode
is selected and if you disconnect terminals S1 and S2 the oil / gas mode should be selected.
i. Switch the mode selector to the desired position and set the room thermostat to the desired set point.
Your heater is now ready and functional.
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