Furnace Limit And Blower Controls; Instructions To Our Customer / End User - Thermo Products Spirit Series Installation, Operation And Service Manual

b. Remove the blower compartment access door on the counterflow/horizontal
furnace.
c. The "Heat" tab is the connection for the heating speed activation thru the fan
board. If a change in heating speed is desired simply pull the wire from the heat
tab and replace it with the desired motor speed wire. The Black (High) is
connected to the "cool" tab for A/C speed operation. If a lower speed is desired for
A/C, the speed is charged the same way. A tab marked "Low" is populated with a
lower fan speed for continuous fan operation thru the "G" circuit of your T-stat.
Unused blower speeds are connected to the "unused motor leads" tabs at bottom
right of fan board.
d. Replace the blower compartment access door.
e. Restore electrical power to the furnace at the disconnecting switch.
f. Recheck Temperature rise and adjust if needed.

Furnace Limit and Blower Controls

The control also has diagnostic features. A green light will illuminate under the
thermostat terminal that is being activated. Also any time the board receives a call from
the thermostat a red light near the center of control will illuminate.
If a limit switch opens the red light will flash, power will be interrupted to the Buner and
the circulating air blower will be energized. The blower will continue to run and the burner
will remain de-energized until the limit closes and the blower off delay expires.
The predetermined limit locations on all of the Spirit oil fired furnaces
! WARNING:
have been tested and approved by Thermo Products, LLC. Any attempt to relocate
these safety controls or replace these safety controls with a control that is not
approved, or is incompatible, may result in personal injury, substantial property
damage or death.

Instructions to Our Customer / End User

! WARNING: If the burner does not operate properly after depressing the oil
primary reset button, turn off the electrical power to the furnace and close the
manual oil shutoff valve. Immediately contact a qualified heating contractor for
service.
Before leaving a new installation, the installer should show the customer or end user
where the furnace instruction manual is kept. He should also discuss the following points:
1) Describe the general operation of the furnace and, if properly equipped, the
cooling system.
2) Show the location of the furnace air filter(s) and those in the duct system, if
equipped. Demonstrate how to remove, clean, and replace the air filter(s).
3) Demonstrate how to set and adjust the room air temperature using the room
thermostat.
4) Demonstrate how to operate (turn on and off), the heating system and, if properly
equipped, the cooling system and the circulating air blower.
5) Show the location of the oil primary safety control in the furnace. Describe when
and demonstrate how to depress the oil primary reset button.
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