506843-01
Page 30 of 39
Issue 1132
Constant Torque Motor
These units are equipped with a permanent magnetic
indoor blower motor that provides constant torque. The
motor has five speed taps all referenced to the same signal
common. Each tap requires 24 volts to be energize.
Thermostat Heat Anticipation
Set the heat anticipator setting (if adjustable) according to
the amp draw listed on the wiring diagram that is attached to
the unit.
NOTE:
Do not secure the electrical conduit directly to the
air ducts or structure.
Electrical
1. Check all wiring for loose connections.
2. Check for the correct voltage at the furnace (furnace
operating). Correct voltage is 120VAC ± 10%.
3.Check amp-draw on the blower motor with inner blower
panel in place.
Unit Nameplate__________ Actual _______________
Blower Speeds
Follow the steps below to change the blower speeds.
1. Turn off electrical power to furnace.
2. Remove blower access panel.
3. Disconnect existing speed tap at integrated control
speed terminal.
NOTE:
Termination of any unused motor leads must be
insulated.
4. Place unused blower speed tap on integrated control
“PARK” terminal or insulate.
5. Refer to blower speed selection chart on unit wiring
diagram for desired heating or cooling speed. See
Blower performance data beginning on the next page.
6. Connect selected speed tap at integrated control speed
terminal.
7. Resecure blower access panel.
8. Turn on electrical power to furnace.
9. Recheck temperature rise.
Electronic Ignition
The integrated control has an added feature of an internal
control. The feature serves as an automatic reset device
for integrated control lockout caused by ignition failure. This
type of lockout is usually due to low gas line pressure. After
one hour of continuous thermostat demand for heat, the
control will break and remake thermostat demand to the
furnace and automatically reset the integrated control to
begin the ignition sequence.
