2.7
INSTALLATION OF
ACCESSORIES
WARNING
E
LECTRICAL SHOCK HAZARD
Turn OFF electrical power at the fuse box or ser-
vice panel before making any electrical connec-
tion and ensure that a proper ground connection
is made before connecting line voltage.
Failure to do so can result in death or bodily injury.
2.7.1
Humidifier and humidistat
connection
Fan Control Board terminals HUM1 (directly connected
internally to C on terminal block) and HUM2 (directly con-
nected internally to G on terminal block) are provided for
direct connections to the low-voltage control of a humidi-
fier through a standard humidistat (refer to Figure 11).
Figure 11: Standard humidistat connections
These terminals are energized with 24 VAC when
G thermostat signal is present. Alternately, the 24 VAC
signal may be sourced from the W1 and C terminal block
connections when electric heaters are used as a primary
heating source (refer to Figure 12).
Figure 12: Thermostat connections
2.7.2
Electronic Air Cleaner (EAC)
connections
Fan Control Board terminals AUX1 (directly connected
internally to C on terminal block) and AUX2 (directly con-
nected internally to G on terminal block) are provided for
direct connections to the low-voltage control of an elec-
tronic air cleaner. These terminals are energized with 24
VAC when G thermostat signal is present (refer to Figure
13).
Figure 13: Electronic air cleaner connections
2.7.3
Dehumidify capability with standard
humidistat connection
Latent capacities for systems using this unit are bet-
ter than average systems. If increased latent capacity is
an application requirement, the field wiring terminal block
provides a connection terminal (DH) for use of a standard
humidistat. The furnace control will detect the humidistat
contact opening on increasing humidity and reduce its
airflow to approximately 80% of nominal cooling mode
airflow. This reduction will increase the system latent
capacity until the humidity falls to a level which causes
the humidistat contact to close its contacts.
When the contact closes again, the airflows comes back
to 100% of the cooling airflow selected.
2.7.4
Use of a heat pump
When using a heat pump, a thermostat with dual fuel
option or a fossil fuel kit is required that prevents the op-
eration of the electric elements and the heat pump at the
same time. Refer to the instructions provided with the
thermostat or the “Fossil Fuel” kit for the proper wiring of
the furnace and the heat pump.
The simultaneous operation of the electric elements and
the heat pump will cause overheating of either unit. The
safety controls of the appliances will shut down the el-
ements or heat pump, since they are not designed to
function in this fashion.
3
OPERATION
3.1
START-UP
Before starting up the unit, be sure to check that the fol-
lowing items are in compliance:
1. The electrical installation and ventilation are con-
form;
2. The blower access door is in place and the blower
rail locking screws are well tightened;
3. The blower speed adjustments for heating and air
conditioning are appropriate and in accordance
with to the specifications in this manual;
4. The thermostat of the room is in heating mode and
is set higher than the ambient temperature;
5. The breakers on front panel are set on the “ON”
position.
To start the unit, turn the main electrical switch on.
3.2
USE OF MANUAL FURNACE
CONTROLS ON ADVANTAGE
FURNACE
When there is a demand for heat, the pilot light (L-1)
comes on. Refer to the wiring diagram.
When the “HI/LO” switch is put into the “LO” position, it
will shut down approximately half the elements.
However, it is important to put the switch back to the
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