7
If the heating and air-cooling speed are the same, the red
wire and the blue wire can be connected on the same
terminal on the motor.
2.7 INSTALLATION
OF
ACCESSORIES
WARNING
Electrical shock hazard.
Turn OFF electrical power at the fuse box or service
panel before making any electrical connections and
ensure 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
electronic air cleaner
This unit is equipped with a 120 VAC terminal for the
connection of accessories up to a maximum of 2 amps. A
humidifier and an electronic air cleaner can be wired to
terminals “1” and “2” of the unit. Refer to the wiring
diagrams in this manual. A field supplied 120/24 VAC
transformer can be installed for accessories using 24 VAC.
A separate power source must be used if the accessories
draw more then 2 amps.
Certain accessories require control relays. A location has
been set aside in the unit for the installation of relays: a 24
VAC (part number L01H009). In addition, a 24 VAC relay
can be wired between terminals “W1” and “C” to be activated
during a call for heat. Refer to the wiring diagrams for the
location of the relay (RAcc) on the control panel.
2.7.2.
Use of a heat pump
When using a heat pump, a thermostat with dial fuel option
or a fossil fuel kit is required that prevents the operation 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 elements or
heat pump, since they are not designed to function in this
fashion.
3.0 OPERATION
3.1 START-UP
Before starting up the unit, be sure to check that the
following items are in compliance:
1. The electrical installation and ventilation;
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 according to the
specifications in this manual;
4. The thermostat of the room is in the heating mode and
is set higher than the ambient temperature.
5. The breakers on front panel are closed (green indicator)
To start the unit, turn the main electrical switch on.
3.2
USE OF MANUAL FURNACE CONTROLS
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
“HI” position during the winter months to ensure
adequate heating.
Also, this switch must remain in the “HI” position when a 2-
stage or outdoor thermostat is used to control the electric
elements of the second stage. Refer to the diagram in
Section 2.5) above (Typical 24 VAC Wiring, Thermostat).
The “ON/OFF VENT/FAN” switch engages the blower in the
continuous speed mode. This will filter the air and provide
for better air distribution in the building.
The circuit breaker is there to protect the motor and control
circuit conductors. If the unit does not function, press the
circuit breaker button to see if it may have disengaged due
to a power surge. If the breaker has to be pressed again,
the unit must be checked by a qualified service technician.
Figure 8 : Manual Furnace Controls
3.3 OPERATING
SEQUENCE
3.3.1. Heating
mode
1. The thermostat closes the R-W1 circuit (24 VAC),
thereby activating the first 22 VDC relay passing by a
rectifier control. Without delay, the 1
st
heating element is
activated and the blower starts at low speed. On 15 kW
unit power and more, a 2
nd
relay is activated after 8
seconds delay to start a 2
nd
element. On 23 kW unit
power and more, a 3
rd
relay is activated after 8 second
delay to start a 3
rd
element.
2. The thermostat closes the R-W1 & W2 circuit (24 VAC),
thereby activating others 22 VDC relays passing by a
rectifier/timer with 8 seconds delay between each one.
The heating elements of the second stage are activated
in sequence after the 8 seconds delay between each.
Summary of Contents for SUPREME SUP10-M2401A
Page 11: ...11 Figure 9 Furnace dimensions...
Page 12: ...12 Figure 10 Wiring diagram 3 wires 10 kW...
Page 13: ...13 Figure 11 Wiring diagram 3 wires 15 kW...
Page 14: ...14 Figure 12 Wiring diagram 3 wires 18 20 kW...
Page 15: ...15 Figure 13 Wiring diagram 3 wires 23 kW...
