SUPREME COMFORT SUPXX-C120D12 Assembly instructions

INSTALLATION INSTRUCTIONS AND HOMEOWNER’S
MANUAL: ELECTRIC FURNACE
Models:
COMFORT & ADVANTAGE COMFORT
(PSC MOTOR)
SUPXX-C120D12
SUPXX-C240D12
SUPXX-C120D20
SUPXX-C240D20
MULTI-POSITION ADVANTAGE
SUPXX-A120D12
SUPXX-A240D12
SUPXX-A120D20
SUPXX-A240D20
SUPXX-A2403D12
SUPXX-A2403D20
INSTALLER / SERVICE TECHNICIAN:
Attention:
Do not tamper with the unit or its controls.
Call a qualified service technician.
USE THE INFORMATION IN THIS MANUAL FOR THE
INSTALLATION AND SERVICING OF THE FURNACE AND
KEEP THE DOCUMENT NEAR THE UNIT FOR FUTURE
REFERENCE.
HOMEOWNER: Manufactured by: Dettson Industries Inc.
PLEASE KEEP THIS MANUAL NEAR THE FURNACE FOR
FUTURE REFERENCE. Sherbrooke, Qc, Canada
www.dettson.com
Printed in Canada on
100% recycled paper
2020-04-22 X40232 Rev.K

Table of content
1 SAFETY 3
1.1 DANGER,WARNINGANDCAUTION .................................................. 3
1.2 IMPORTANTINFORMATION ........................................................ 3
1.3 DANGEROFFREEZING ........................................................... 4
2 INSTALLATION 4
2.1 POSITIONINGTHEFURNACE....................................................... 4
2.2 CLEARANCESTOCOMBUSTIBLEMATERIAL ........................................... 4
2.2.1 Heatingunit ................................................ 4
2.2.2 Supplyairducts .............................................. 4
2.3 CONFIGURATIONS ............................................................... 4
2.3.1 Upflowinstallation ............................................. 5
2.3.2 Downflowinstallation............................................ 5
2.3.3 Horizontalinstallation ........................................... 5
2.3.4 Suspendedinstallation........................................... 5
2.4 ELECTRICALSYSTEM ............................................................ 5
2.4.1 Conversion from two wires to one wire supply for models 27kW and more . . . . . . . . . . . . . . 6
2.4.2 208VPowerSupply ............................................ 6
2.5 INSTALLATIONOFTHETHERMOSTAT ................................................ 6
2.5.1 Anticipator adjustment (if required) on thermostat equipped with heat anticipator adjustment . . . . 7
2.5.2 Airducts................................................... 7
2.6 SUPPLYAIRADJUSTMENTS........................................................ 7
2.7 INSTALLATIONOFACCESSORIES.................................................... 8
2.7.1 Humidifier and electronic air cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.7.2 Useofaheatpump ............................................ 8
3 OPERATION 8
3.1 START-UP....................................................................... 8
3.2 USE OF MANUAL FURNACE CONTROLS ON ADVANTAGE FURNACE . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 OPERATINGSEQUENCE........................................................... 9
3.3.1 Heatingmode................................................ 9
3.3.2 CoolingMode................................................ 9
3.3.3 Continuousfanspeed ........................................... 9
3.4 AIRFLOWVERIFICATION........................................................... 9
3.4.1 Supply Air Temperature Rise Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4.2 Highlimitverification............................................ 10
4 MAINTENANCE 10
1

4.1 AIRFILTER...................................................................... 10
4.2 MOTORLUBRICATION............................................................. 10
5 FURNACE INFORMATION 11
6 TECHNICAL SPECIFICATIONS 12
7 NOTES 24
List of figures
Figure1: UpflowConfiguration ........................................... 5
Figure2: DownflowConfiguration.......................................... 5
Figure3: HorizontalConfiguration.......................................... 5
Figure 4: Conversion from two to one supply wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5: 1-stage thermostat, electric heating only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 6: 2-stage thermostat, electric heating only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 7: 1-stage thermostat with outdoor control for 2-stage function, electric heating only . . . . . . . . . . 6
Figure 8: 1-stage thermostat, electric heating and air conditionning . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 9: 2-stage thermostat, electric heating and air conditioning . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure10: Advantagefurnacecontrols........................................ 9
Figure11: Furnacedimensions............................................ 16
Figure 12: Électrical diagram, Supreme Comfort PSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 13: Électrical diagram, Supreme Advantage PSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 14: Électrical diagram, Supreme Advantage PSC, 3 phases . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 15: Parts list, SUPREME ComfortPSC .................................... 20
Figure 16: Parts list, SUPREME AdvantagePSC................................... 22
List of tables
Table 1: Supply air adjustment on cooling mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 2: Technical specifications (120V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 3: Technical specifications(240V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 4: Technical specifications(240V 3 phases) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 5: Airflow (CFM) - SUPREME with 1/3 HP motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 6: Airflow (CFM) - SUPREME with 1HP motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table7: Accessories................................................. 16
Table 8: Parts list, SUPREME ComfortPSC .................................... 21
Table 9: Parts list, SUPREME AdvantagePSC................................... 23
2

1 SAFETY
1.1 DANGER, WARNING AND
CAUTION
The words DANGER, WARNING and CAUTION are
used to identify the levels of seriousness of certain
hazards. It is important that you understand their
meaning. You will notice these words in the manual as
follows:
DANGER
Immediate hazards which WILL result in death or
serious bodily and/or material damage.
WARNING
Hazards or unsafe practices which CAN result in
death or serious bodily and /or material damage.
CAUTION
Hazards or unsafe practices which CAN result in
minor bodily and /or material damage.
1.2 IMPORTANT INFORMATION
WARNING
Non-observance of the safety regulations
outlined in this manual will potentially lead to
consequences resulting in death, serious bodily
injury and/or property damage.
WARNING
Installation and repairs performed by unqualified
persons can result in hazards to them and to
others. Installations must conform to local codes
or, in the absence of such codes, to codes of the
country having jurisdiction.
The information contained in this manual is
intended for use by a qualified technician, familiar
with safety procedures and who is equipped with
the proper tools and test instruments.
Failure to carefully read and follow all instructions
in this manual can result in death, bodily injury
and/or property damage.
a) It is the homeowner’s responsibility to engage
a qualified technician for the installation and
subsequent servicing of this furnace;
b) Do not use this furnace if any part of it was
under water. Call a qualified service technician
immediately to assess the damage and to replace
all critical parts that were in contact with water;
c) Do not store gasoline or any other flammable
substances, such as paper or carton, near the
furnace;
d) Never block or otherwise obstruct the filter and/or
return air openings;
e) Ask the technician installing your furnace to show
and explain to you the following items:
i. The main disconnect switch or circuit breaker;
ii. The air filter and how to change it (check
monthly and clean or replace if necessary);
f) Before calling for service, be sure to have the
information of section 5 of your manual close by in
order to be able to provide the contractor with the
required information, such as the model and serial
numbers of the furnace.
3

IMPORTANT : All local and national code
requirements governing the installation of central
electric heating equipment, wiring and the flue
connection MUST be followed. Some of the codes
that may apply are:
ANSI/NFPA 70: National Electrical Code CSA
C22.1 or CSA C22.10: Canadian Electrical Code
Only the latest issues of these codes may be used,
and are available from either:
The National Fire Protection Agency
1 Batterymarch Park
Quincy, MA 02269
or
The Canadian Standards Association
178 Rexdale Blvd.
Rexdale, Ontario M9W 1R3
1.3 DANGER OF FREEZING
CAUTION
If your furnace is shut down during the cold
weather season, water pipes may freeze, burst and
cause serious water damage. Turn off the water
supply and bleed the pipes.
If the heater is left unattended during the cold weather
season, take the following precautions:
a) Close the main water valve in the house and purge
the pipes if possible. Open all the faucets in the
house;
b) Ask someone to frequently check the house during
the cold weather season to make sure that there is
sufficient heat to prevent the pipes from freezing.
Tell this person to call an emergency number if
required.
2 INSTALLATION
This furnace is a true multi-position unit, in that
it will function in an upflow, downflow or horizontal
configuration to the left or the right. Only a few
modifications are required during installation to change
from one position to another. The unit is shipped in the
upflow configuration and instructions as to how to change
to the other positions are included in this manual.
The unit requires a 120/240 - 208 VAC power supply to
the control panel, thermostat hook-up as shown on the
wiring diagram.
2.1 POSITIONING THE FURNACE
WARNING
FIRE AND EXPLOSION HAZARD
The furnace must be installed in a level position,
never where it will slope toward the front.
Do not store or use gasoline or any other
flammable substances near the furnace.
Non-observance of these instructions will
potentially result in death, bodily injury and/or
property damage.
WARNING
This furnace is not watertight and is not designed
for outdoor installation. It must be installed
in such a manner as to protect its electrical
components from water. Outdoor installation will
lead to a hazardous electrical condition and to
premature failure of the equipment.
If the furnace is installed in a basement or on a dirt floor,
in a crawl space for example, it is recommended to install
the unit on a cement base 2.5 cm to 5.0 cm (1” to 2”)
thick.
In addition, the heater should also be located close to the
center of the air distribution system.
2.2 CLEARANCES TO
COMBUSTIBLE MATERIAL
2.2.1 Heating unit
The furnace is approved for zero clearance to
combustible material regardless of the heating capacity.
2.2.2 Supply air ducts
Ducts can be installed with a zero clearance to
combustible material.
2.3 CONFIGURATIONS
This furnace requires suitable ductwork.
4

2.3.1 Upflow installation
The return duct may be installed to the back, to the
bottom, on the left side or on the right side of the unit. The
supply duct shall be installed on the top of the unit. Care
should be taken not to damage the wires inside, while
cutting the opening. Instal the filter rack that is supplied
with the unit. It is also recommended to install the blower
door before handling or moving the unit. Refer to Figure
1 for additional details.
Figure 1 – Upflow Configuration
2.3.2 Downflow installation
The return duct may be installed to the back, on the left
side, on the right side or under the unit. The supply duct
shall be installed on the top of the unit.
When the furnace is installed in the downflow position on
a combustible floor, the downflow base DFB-SUP can be
used. Refer to Figure 2 and the installation instructions
provided with the base.
Figure 2 – Downflow Configuration
2.3.3 Horizontal installation
The return duct may be installed to the back, on the left
side, on the right side or under the unit. The supply duct
shall be installed on the top of the unit.
When the furnace is installed in the horizontal position,
either suspended or on a combustible floor with a choice
of right or left discharge, the clearances from combustible
material must be adhered to. Refer to Figure 3 for
additional details.
Figure 3 – Horizontal Configuration
2.3.4 Suspended installation
The furnace can be hanged to the ceiling in either
upflow, downflow or horizontal. Make sure to mount
it appropriately and to respect the clearances to
combustible material.
WARNING
The furnace must be properly secured especially
when installed above living space.
Failure to follow this rule can result in death,
bodily injury and/or property damage.
2.4 ELECTRICAL SYSTEM
The SUPREME furnace is completely pre-wired and all
field wiring must be connected to the terminal blocks on
the unit. It requires 2 service wires of 240 - 208 volts.
All the 120V models (SUPxx-y120Dzz) require neutral
wire because the motor works under 120VAC.
WARNING
RISK OF FIRE
The conductor sizing must conform to the last
edition of the local or national codes.
Failure to follow this rule can result in death,
bodily injury and/or property damage.
Power supply to the unit can be done using copper
or aluminum wires. The wire size must be decided in
accordance to unit power consumption, the over current
protection type and capacity, the wire type and length,
and the environment where the unit is installed. If an
aluminum wire is used, other precautions must be taken
to insure the conformity of the installation. In all cases, all
the factors affecting the wire gauge must be considered
and the installation codes followed.
5

The exterior of the unit must have an uninterrupted
ground to minimize the risk of bodily harm. A ground
terminal is supplied with the control box for that purpose.
A connector is supplied on the ground terminal to ground
an added accessory.
In the event that wires inside the unit require
replacement, these must be copper wires only with same
temperature rating and sizes as originals.
2.4.1 Conversion from two wires to one
wire supply for models 27kW and
more
Only for single-phase models.
WARNING
RISK OF FIRE
When using one terminal block on models of 27kW
and higher, the installation must be performed
with copper wire ONLY in order to comply with
the Canadian electrical code. The usage of an
aluminum or copper wire is acceptable on models
25kW and lower.
Move all wires from the two pole terminal to the three pole
terminal following the corresponding colors as shown in
Figure 4.
The breaker and the supply conductors must be sized by
adding the ampacities of the two terminals indicated on
the nameplate. Refer to the electrical diagram Figure 12.
Figure 4 – Conversion from two to one supply wires
2.4.2 208V Power Supply
If a 208VAC Power Supply is used, the connector at the
primary of the transformer must be changed to the 208V
position.
2.5 INSTALLATION OF THE
THERMOSTAT
A thermostat must be installed to control the temperature
of the area to be heated. Follow the instructions
supplied with the thermostat. Some thermostats need to
connect the C terminal on the furnace and thermostat.
Install the thermostat on an interior wall in a location
where it will not be subject to direct sunlight, lamps,
air diffusers, fireplaces, etc. Seal openings in walls to
avoid air currents that may influence the operation of the
thermostat. Also refer to the wiring diagrams provided
with the heating/air conditioning unit. The connections
must be made as indicated on Figure 5 to Figure 9. Refer
to the electrical diagrams (Figure 12 and Figure 13).
Figure 5 – 1-stage thermostat, electric heating only
Figure 6 – 2-stage thermostat, electric heating only
Figure 7 – 1-stage thermostat with outdoor control
for 2-stage function, electric heating only
6

Figure 8 – 1-stage thermostat, electric heating and air
conditionning
Figure 9 – 2-stage thermostat, electric heating and air
conditioning
2.5.1 Anticipator adjustment (if required)
on thermostat equipped with heat
anticipator adjustment
Some thermostats are equipped with a heat anticipator
that must be adjusted according to the instructions
supplied. This is to ensure that the heating mode is
comfortable and economical. Generally speaking, on a
single stage thermostat, a reading of the current must be
taken with an ammeter as follows:
1. Move the anticipator to its highest setting, rendering
it ineffective.
2. Remove the wire from the W1 terminal of the
furnace and connect an ammeter between the
terminal and the wire.
3. Call for heat by raising the set point on the
thermostat and allow the furnace to run for 3 to 4
minutes to reach its peak output.
4. Once the current has stabilized, a reading should
be taken and the anticipator adjusted to that value.
If longer heating cycles are desired, the anticipator
can be set to a higher value
2.5.2 Air ducts
The ducts must be sized such a way as to accommodate
the specified airflow and the available static pressure.
Refer to the applicable local and/or national installation
codes. Insulate the ducts that lead through non-heated
areas. Use flexible supply and return air connectors to
avoid the transmission of vibration. To make the unit run
even quieter, the installer should:
1. Use two elbows between each outlet and the
supply and return air plenum;
2. Cover the vertical sections of the supply and return
air duct with soundproofing material;
3. Use baffles in short radius elbows;
4. Use flexible hangers to suspend the ducts.
A heat pump or an air conditioner can be added to this
furnace, in either the supply or return air duct. Carefully
follow the instructions provided with these appliances to
ensure proper installation and hook-up to the electric
furnace. Refrigerant and drainage pipes must in no way
hinder access to the furnace panels.
2.6 SUPPLY AIR ADJUSTMENTS
The supply air must be adjusted based on heating/air
conditioning output and the static pressure of the duct
system. For the desired airflow, refer to Table 1, as well
as Table 4 and Table 5 for the airflow based on static
pressure.
For the adjustment of the airflow on heating mode, to
obtain the temperature rise described in the technical
specification table Table 2 and Table 3), the orange wire
must be positioned on the terminal corresponding to the
LOW, MED-LOW, MED-HIGH or HIGH blower speed.
For the adjustment of the airflow on air-cooling mode,
to obtain a sufficient airflow (350 to 450 CFM per
Ton), the blue wire must be positioned on the terminal
corresponding to the LOW, MED-LOW, MED-HIGH or
HIGH blower speed.
Blower speeds are adjusted in factory for 0.5 inch W.C.
static pressure.
7

Table 1 – Supply air adjustment on cooling mode
MOTOR
HP
COOLING
CAPACITY
(0.5 ‘’ w.c.)
BLOWER
SPEED
(Motor 120V)
BLOWER
SPEED
(Motor 240V)
1/3
1.5 LOW LOW
2.0 MED-LOW LOW
2.5 MED-HIGH MED
3.0 HIGH HIGH
1.0
2.5 LOW LOW
3.0 MED-LOW MED-LOW
3.5 MED-LOW MED-HIGH
4.0 MED-HIGH MED-HIGH
5.0 HIGH HIGH
If heating and air-cooling speeds are the same, the
orange 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
connection 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 electronic air cleaner
For single-phase models, 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 L1 and N of the unit.
Refer to the wiring diagrams in this manual (Figure 12
and Figure 13). A field supplied 24 VAC transformer
can be installed for accessories using 24 VAC. For three-
phases models or if the accessories draw more than 2
amps, a separate power source must be used.
Some 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 and in accessory instructions.
2.7.2 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
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 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 are
conform;
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 “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. The “ON/OFF VENT/FAN” switch
engages the blower in the continuous low speed mode.
This will filter the air and provide for better air distribution
8

in the building.
The 15 A circuit breaker is there to protect the motor
and the 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 10 – Advantage furnace controls
3.3 OPERATING SEQUENCE
3.3.1 Heating mode
1. The thermostat closes the R-W1 circuit (24 VAC),
thereby sending a 24 VAC signal to the blower relay
and the sequencer board. The board will then
activate all the first stage relays with a delay of 3
seconds between each element. The motor relay
will be activated, which will start the blower on the
first stage heating speed.
2. The thermostat closes the R-W2 circuit (24 VAC),
thereby sending a 24 VAC signal to the blower
relay and the sequencer board. The board will
then activate all the first and second stage relays
with a delay of 3 seconds between each element.
The motor relay will be activated, which will start
the blower on the second stage maximum heating
speed.
3. The deactivation of either mode will result in the
deactivation of the corresponding relays with a
delay of 0.5 second between each element.
3.3.2 Cooling Mode
1. The thermostat closes the R-G circuit, thereby
activating the 24 VAC relay. The blower starts up
to cooling speed.
2. The thermostat closes the R-Y contact, thereby
activating the compressor relay of the air
conditioner.
3.3.3 Continuous fan speed
Activating the “Fan” switch on the thermostat will engage
only the blower at cooling speed.
3.4 AIRFLOW VERIFICATION
Verify the airflow by taking readings of the following
points, while the elements are in heating mode:
a) Total amperage of all the heating elements;
b) Voltage at the furnace;
c) Supply air temperature. The point of the reading
must not be affected by radiant heat from the
elements;
d) Return air temperature.
From these readings, one can arrive at an approximate
calculation of the average airflow. To do that, the
following formula should be used:
Liter/s =0.82 ×amps. ×volts
Diff. temperature °C
CFM =3.1×amps. ×volts
Diff. temperature °F
Tables 5 and 6 show estimated airflows for various
temperature rises.
3.4.1 Supply Air Temperature Rise Test
1. Operate the unit at maximum power for at least 10
minutes;
2. Measure the air temperature in the return air
plenum;
3. Measure the air temperature in the largest trunk
coming off the supply air plenum, just outside the
range of radiant heat from the heat exchanger. 0.3
m (12”) from the plenum of the main take-off is
usually sufficient;
4. Calculate the temperature rise by subtracting
the return air temperature from the supply air
temperature.
If the temperature rise exceeds the temperature specified
in Table 2 and Table 3, change to the next higher blower
speed tap, until the temperature rise falls to the target
or below. If the excessive temperature rise cannot
be reduced by increasing fan speed, investigate for
ductwork obstructions or dirty and improper air filter.
9

CAUTION
It is important to check the airflow and to
ascertain that the unit does not operate above
the temperatures specified in the Technical
Specifications (Table 2). This is particularly
important if a cooling coil or a heat pump has been
installed in the ducts.
Hi-Limit thermal protectors should never need
to engage during the normal functioning of the
appliance. They are strictly designed to engage
during the improper functioning of the blower or
when the filter was improperly maintained.
3.4.2 High limit verification
After operating the furnace for at least 15 minutes, restrict
the return air supply by blocking the filters or the return air
register and allow the furnace to shut off on High Limit.
The electric heaters must deactivate themselves before
the warm air temperature exceeds 200°F (93°C).
Remove the obstruction and the elements should restart
after a few minutes.
4 MAINTENANCE
WARNING
ELECTRICAL SHOCK HAZARD
Turn OFF power to the furnace before any
disassembly or servicing.
Failure to do so can result in death, bodily injury
and/or property damage.
Preventive maintenance is the best way to avoid
unnecessary expense and inconvenience. Have
your heating system inspected by a qualified service
technician once a year. Do not attempt to repair the
furnace or its controls. Call a qualified service technician.
Before calling for repair service, check the following
points:
1. Check fuses or the circuit breakers;
2. Check if the 15 A circuit breaker on the furnace is
disengaged;
3. Set the thermostat higher than room temperature.
If the unit does not start up, cut the power and call
a qualified service technician.
When calling for service or ordering a replacement part,
specify the model and serial number of your appliance.
4.1 AIR FILTER
The disposable filter should be replaced twice a year.
The presence of animal hair, dust, etc. may necessitate
more frequent changes. Dirty filters have an adverse
effect on the performance of the central heating system.
4.2 MOTOR LUBRICATION
Do not lubricate the blower motor, since it is permanently
lubricated.
10

5 FURNACE INFORMATION
Model: .................................................. Serialnumber: ..........................................
Furnaceinstallationdate: ...............................
Servicetelephone#-Day: .............................. Night: ...................................................
Dealernameandaddress: ...........................................................................................
......................................................................................................................
START-UP RESULTS
Voltage: ...........................................................................................................
Totalcurrentconsumedbytheelements: ..........................................................................
Supplyairtemperature: ............................................................................................
Returnairtemperature: ............................................................................................
Supplyairductstaticpressure: ....................................................................................
Returnairductstaticpressure: ....................................................................................
Totalpressure: ....................................................................................................
Calculatedairflow: ................................................................................................
Currentconsumedbytheblowermotor:............................................................................
Currentconsumedbytheaccessories: ............................................................................
11

6 TECHNICAL SPECIFICATIONS
Table 2 – Technical specifications (120V)
RATING AND SUPxx-x120D12 SUPxx-x120D20
PERFORMANCE Motor 1/3 HP / 120V Motor 1 HP / 120V
Capacity 10 15 18 20 23 25 20 23 25 27 30
Power, total @ 240V / 208V (Kw) 10 / 7.5 15 / 11.3 18 / 13.5 20 /15 23 / 17.3 25 / 18.8 20 /15 23 / 17.3 25 / 18.8 27 / 20.3 30 / 22.5
Power, first stage @ 240V / 208V
(Kw)
5/ 3.8 10 / 7.5 9/ 6.8 10 / 7.5 13 / 9.8 15 / 11.3 10 / 7.5 13 / 9.8 15 / 11.3 15 / 11.3 15 / 11.3
Net capacity @ 240V (BTU/h) / 208V 34,120
25,628
51,180
38,442
61,420
46,130
68,240
51,256
78,480
58,944
85,300
64,070
68,240
51,256
78,480
58,944
85,300
64,070
92,124
69,195
102,360
76,884
Temperature rise range @ 240V (°F)
1
40-60 50-70 60-80 60-80 60-80 70-85 45-65 55-75 54-65 50-70 55-75
ELECTRICAL SYSTEM
Volts - Hertz - Phase 3 wires 120-240/208 - 60 - 1
Electrical element #1 @ 240V / 208V
(Kw)
5/ 3.7 5/ 3.7 4/ 3.1 5/3.7 4/ 3.1 5/ 3.7 5/ 3.7 4/ 3.1 5/ 3.7 5/ 3.7 5/ 3.7
Electrical element #2 @ 240V / 208V
(Kw)
5/ 3.7 5/ 3.7 5/ 3.7 5/3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7
Electrical element #3 @ 240V / 208V
(Kw)
5/ 3.7 4/ 3.1 5/3.7 4/ 3.1 5/ 3.7 4/ 3.1 4/ 3.1 5/ 3.7 5/ 3.7 5/ 3.7
Electrical element #4 @ 240V / 208V
(Kw)
5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 4/ 3.1 5/ 3.7
Electrical element #5 @ 240V / 208V
(Kw)
5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 4/ 3.1 5/ 3.7
Electrical element #6 @ 240V / 208V
(Kw)
4/ 3.1 5/ 3.7
Blower motor Consumption @ 240V
/ 208V (Amp. Max.)
6.8 / 5.9 6.8 / 5.9 6.8 / 5.9 6.8 / 5.9 6.8 / 5.9 6.8 / 5.9 11.5 / 9.9 11.5 / 9.9 11.5 / 9.9 11.5 / 9.9 11.5 / 9.9
Heating Elements Consumption @
240V / 208V (Amp)
41.4 /
35.9
62.1 /
53.8
75.8 /
65.7
82.8 /
71.8
96.5 /
83.6
103.5 /
89.7
82.8 /
71.8
96.5 /
83.6
103.5 /
89.7
113.6 /
98.5
124.3 /
107.7
Total Consumption @ 240V / 208V
(Amp)
48.3 /
41.8
69.0 /
59.7
82.6 /
71.5
89.7 /
77.7
103.3 /
89.5
110.4 /
95.6
94.3 /
81.7
107.9 /
93.5
115.0 /
99.6
125.1 /
108.4
135.7 /
117.6
Ampacity - Terminal block #1 @
240V / 208V (Amp) 2
59.3 /
51.7
83.9 /
73.0
100.0 /
87.0
108.05
/ 94.3
124.7 /
108.3
133.1 /
115.6
114.0 /
99.1
130.2 /
113.1
138.6 /
120.4
60.6 /
52.8
64.8 /
56.4
Ampacity - Terminal block #2 @
240V / 208V (Amp) 2
- - - - - - - - - 90.0 /
78.0
98.4 /
85.2
Breaker size - Terminal block #1 @
240V / 208V (Amp) 2
60 / 60 90 / 80 100 /
90
125 /
100
125 /
125
150 /
125
125 /
100
150 /
125
150 /
125
70 / 60 70 / 60
Breaker size - Terminal block #2 @
240V / 208V (Amp) 2
- - - - - - - - - 90 / 80 100 /
90
BLOWER DATA (factory adjusted for a static pressure of 0.5" W.C.)
Blower speed at 1st stage LOW LOW LOW LOW LOW MED-LOW LOW LOW LOW LOW LOW
Blower speed at 0.50” W.C. stat. LOW MED-LOW MED-LOW MED-HIGH MED-HIGH MED-HIGH LOW LOW MED-LOW MED-LOW MED-LOW
Blower speed at 0.20” W.C. stat. LOW MED-LOW MED-LOW MED-LOW MED-HIGH MED-HIGH LOW LOW MED-LOW MED-LOW MED-LOW
Motor (HP) / number of speeds 1/3 HP / 4 speeds 1 HP / 4 speeds
Nominal blower size (diam. X width) 12 x 8 12 x 9
GENERAL INFORMATION
Overall dim. (width x depth x height) 22" x 22" x 36.5"
Supply 20” x 20”
Return 18” x 18”
Filter quantity and size (1) 20" x 20"
Shipping weight 48 Kg / 105 lbs
Maximum cooling capacity 3 tons 5 tons
1) Select a blower speed that will generate the specified temperature rise. 2) Calculated on the basis of standardC22.2-236.
12

Table 3 – Technical specifications(240V)
RATING AND SUPxx-x240D12 SUPxx-x240D20
PERFORMANCE Motor 1/3 HP / 240V Motor 1 HP / 240V
Capacity 10 15 18 20 23 25 20 23 25 27 30
Power, total @ 240V / 208V (Kw) 10 / 7.5 15 / 11.3 18 / 13.5 20 /15 23 / 17.3 25 / 18.8 20 /15 23 / 17.3 25 / 18.8 27 / 20.3 30 / 22.5
Power, first stage @ 240V / 208V
(Kw)
5/ 3.8 10 / 7.5 9/ 6.8 10 / 7.5 13 / 9.8 15 / 11.3 10 / 7.5 13 / 9.8 15 / 11.3 15 / 11.3 15 / 11.3
Net capacity @ 240V (BTU/h) / 208V 34,120
25,628
51,180
38,442
61,420
46,130
68,240
51,256
78,480
58,944
85,300
64,070
68,240
51,256
78,480
58,944
85,300
64,070
92,124
69,195
102,360
76,884
Temperature rise range @ 240V (°F)
1
25-45 45-60 55-75 60-80 60-80 60-80 55-75 50-70 50-70 55-75 60-80
ELECTRICAL SYSTEM
Volts - Hertz - Phase 2 wires 240/208 - 60 - 1
Electrical element #1 @ 240V / 208V
(Kw)
5/ 3.7 5/ 3.7 4/ 3.1 5/3.7 4/ 3.1 5/ 3.7 5/ 3.7 4/ 3.1 5/ 3.7 5/ 3.7 5/ 3.7
Electrical element #2 @ 240V / 208V
(Kw)
5/ 3.7 5/ 3.7 5/ 3.7 5/3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7
Electrical element #3 @ 240V / 208V
(Kw)
5/ 3.7 4/ 3.1 5/3.7 4/ 3.1 5/ 3.7 5/ 3.7 4/ 3.1 5/ 3.7 5/ 3.7 5/ 3.7
Electrical element #4 @ 240V / 208V
(Kw)
5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 4/ 3.1 5/ 3.7
Electrical element #5 @ 240V / 208V
(Kw)
5/ 3.7 5/ 3.7 5/ 3.7 5/ 3.7 4/ 3.1 5/ 3.7
Electrical element #6 @ 240V / 208V
(Kw)
4/ 3.1 5/ 3.7
Blower motor Consumption @ 240V
/ 208V (Amp. Max.)
2.6 / 2.3 2.6 / 2.3 2.6 / 2.3 2.6 / 2.3 2.6 / 2.3 2.6 / 2.3 5.9 / 5.1 5.9 / 5.1 5.9 / 5.1 5.9 / 5.1 5.9 / 5.1
Heating Elements Consumption @
240V / 208V (Amp)
41.4 /
35.9
62.1 /
53.8
75.8 /
65.7
82.8 /
71.8
96.5 /
83.6
103.5 /
89.7
82.8 /
71.8
96.5 /
83.6
103.5 /
89.7
113.6 /
98.5
124.3 /
107.7
Total Consumption @ 240V / 208V
(Amp)
44.0 /
35.9
64.7 /
56.1
78.4 /
68.0
85.4 /
74.1
99.1 /
85.9
106.1 /
92.0
88.7 /
76.9
102.4 /
88.7
109.4 /
94.8
119.5 /
103.6
130.2 /
112.8
Ampacity - Terminal block #1 @
240V / 208V (Amp) 2
54.3 /
47.3
78.9 /
68.6
95.1 /
82.7
103.5 /
90.0
119.7 /
104.0
128.1 /
111.3
107.4 /
93.3
123.5 /
107.3
132.0 /
114.6
54.0 /
47.0
58.2 /
50.7
Ampacity - Terminal block #2 @
240V / 208V (Amp) 2
- - - - - - - - - 90.0 /
78.0
98.4 /
85.2
Breaker size - Terminal block #1 @
240V / 208V (Amp) 2
60 / 50 80 / 70 100 /
90
125 /
90
125 /
125
150 /
125
125 /
100
125 /
125
150 /
125
60 / 50 60 / 60
Breaker size - Terminal block #2 @
240V / 208V (Amp) 2
- - - - - - - - - 90 / 80 100 /
90
BLOWER DATA (factory adjusted for a static pressure of 0.5" W.C.)
Blower speed at 1st stage LOW LOW LOW LOW LOW MED-LOW LOW LOW LOW LOW LOW
Blower speed at 0.50” W.C. stat. LOW MED-LOW MED-LOW MED-HIGH MED-HIGH MED-HIGH LOW LOW MED-LOW MED-LOW MED-LOW
Blower speed at 0.20” W.C. stat. LOW MED-LOW MED-LOW MED-LOW MED-HIGH MED-HIGH LOW LOW MED-LOW MED-LOW MED-LOW
Motor (HP) / number of speeds 1/3 HP / 3 speeds 1 HP / 4 speeds
Nominal blower size (diam. X width) 12 x 8 12 x 9
GENERAL INFORMATION
Overall dim. (width x depth x height) 22" x 22" x 36.5"
Supply 20” x 20”
Return 18” x 18”
Filter quantity and size (1) 20" x 20"
Shipping weight 48 Kg / 105 lbs
Maximum cooling capacity 3 tons 5 tons
1) Select a blower speed that will generate the specified temperature rise.
2) Calculated on the basis of standardC22.2-236.
13

Table 4 – Technical specifications(240V 3 phases)
RATING AND SUPxx-A2403D12 SUPxx-A2403D20
PERFORMANCE Motor 1/3 HP / 240V Motor 1 HP / 240V
Capacity 24 30
Power, total @ 240V / 208V (Kw) 24 / 18 30 / 22.5
Power, first stage @ 240V / 208V (Kw) 15 / 9 15 / 11.3
Net capacity @ 240V (BTU/h) / 208V 81,891 / 61,509 102,360 / 76,884
Temperature rise range @ 240V (°F) 160-80 60-80
ELECTRICAL SYSTEM
Volts - Hertz - Phase 3 wires 240/208 - 60 - 3
Electrical element #1 @ 240V / 208V (Kw) 4/ 3.1 5/ 3.7
Electrical element #2 @ 240V / 208V (Kw) 4/ 3.1 5/ 3.7
Electrical element #3 @ 240V / 208V (Kw) 4/ 3.1 5/ 3.7
Electrical element #4 @ 240V / 208V (Kw) 4/ 3.1 5/ 3.7
Electrical element #5 @ 240V / 208V (Kw) 4/ 3.1 5/ 3.7
Electrical element #6 @ 240V / 208V (Kw) 4/ 3.1 5/ 3.7
Blower motor Consumption @ 240V / 208V (Amp. Max.) 2.6 / 2.3 5.9 / 5.1
Heating Elements Consumption @ 240V / 208V (Amp) 57.8 / 50.1 72.2 / 62.6
Total Consumption @ 240V / 208V (Amp) 60.4 / 52.3 78.1 / 67.7
Ampacity @ 240V / 208V (Amp) 76 / 66 93 / 81
Suggested breaker size @ 240V / 208V (Amp) 280 / 70 100 / 90
BLOWER DATA 3
Blower speed at 1st stage LOW LOW
Blower speed at 0.50” W.C. stat. MED-HIGH MED-LOW
Blower speed at 0.20” W.C. stat. MED-HIGH MED-LOW
Motor (HP) / number of speeds 1/3 HP / 3 speeds 1 HP / 4 speeds
Nominal blower size (diam. X width) 12 x 8 12 x 9
GENERAL INFORMATION
Overall dim. (width x depth x height) 22" x 22" x 36.5"
Supply 20” x 20”
Return 18” x 18”
Filter quantity and size (1) 20" x 20"
Shipping weight 48 Kg / 105 lbs
Maximum cooling capacity 3 tons 5 tons
1) Select a blower speed that will generate the specified temperature rise.
2) Calculated on the basis of standard C22.2-236.
3) Factory adjusted for a static pressure of 0.5" W.C.
14

Table 5 – Airflow (CFM) - SUPREME with 1/3 HP motor
Furnace equipped with a 1/3 HP / 120 blower motor
Blower External static pressure (inche of W.C.)
Speed 0,2 0,3 0,4 0,5 0,6 0,7 0,8
LOW 660 635 615 595 580 565 540
MED-LOW 840 815 800 775 750 715 670
MED-HIGH 1 025 1 010 995 975 945 900 860
HIGH 1 260 1 240 1 200 1 150 1 110 1 055 975
Furnace equipped with a 1/3 HP / 240 blower motor
Blower External static pressure (inche of W.C.)
Speed 0,2 0,3 0,4 0,5 0,6 0,7 0,8
LOW 660 635 615 595 580 565 540
MED 840 815 800 775 750 715 670
HIGH 1 260 1 240 1 200 1 150 1 110 1 055 975
•Airflow values in cubic feet per minute (CFM) rounded to the nearest 5CFM
•Data taken with air filter in place.
Table 6 – Airflow (CFM) - SUPREME with 1HP motor
Furnace equipped with a 1HP / 120 blower motor
Blower External static pressure (inche of W.C.)
Speed 0,2 0,3 0,4 0,5 0,6 0,7 0,8
LOW 1 110 1 090 1 085 1 080 1 070 1 050 1 005
MED-LOW 1 455 1 430 1 410 1 400 1 380 1 355 1 320
MED-HIGH 1 865 1 830 1 800 1 740 1 705 1 665 1 605
HIGH 2 055 2 045 2 030 2 010 1 980 1 880 1 800
Furnace equipped with a 1HP / 240 blower motor
Blower External static pressure (inche of W.C.)
Speed 0,2 0,3 0,4 0,5 0,6 0,7 0,8
LOW 1 030 1 030 1 030 970 950 935 900
MED-LOW 1 380 1 350 1 310 1 275 1 250 1 225 1 175
MED-HIGH 1 785 1 735 1 730 1 725 1 650 1 610 1 515
HIGH 2 230 2 199 2 110 2 030 1 900 1 815 1 730
•Airflow values in cubic feet per minute (CFM) rounded to the nearest 5CFM
•Data taken with air filter in place.
15

Figure 11 – Furnace dimensions
451mm
17 3
4
"
451mm
17 3
4
"
RETURN
483mm x 483mm
19" x 19"
RETOUR
Identical on the 2 sides,
the back and below.
KOE
Identical on the 2 sides
Identique sur les 2 cotés
KOE
A= 35mm @ 44mm
1 3/8" & 1 3/4"
B= 29mm
7/8"
A
B
Identique sur les 2 cotés,
au dos et en dessous
DNS1455 rev.B
927mm
36 1/2"
559mm
22"
559mm
22"
25mm
1"
25mm
1"
SUPPLY
ALIMENTATION
508mm x 508mm
20" x 20"
REVISIONS
REV. DESCRIPTION A/C DATE PAR
Table 7 – Accessories
DFB-SUP Downflow base ref: B03310-3
16

Figure 12 – Électrical diagram, Supreme Comfort PSC
17

Figure 13 – Électrical diagram, Supreme Advantage PSC
18

Figure 14 – Électrical diagram, Supreme Advantage PSC, 3 phases
ELECTRICAL DIAGRAM / DIAGRAMME ÉLÉCTRIQUE
ADVANTAGE/AVANTAGE-PSC (3 PHASES)
19