Ouellet Comfort OFEC 000 Series User manual

Printed in Canada
Printed on 100% recycled paper
2021-11-02
X40238 Rev. D
Models:
Comfort
OFECxx000
Advantage
OFEAxx000
OFEAxx000-1H
COMFORT & ADVANTAGE
(PSC MOTOR)
Caution: Do not tamper with
the unit or its controls. Call a
qualified service technician.
INSTALLER / 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:
PLEASE KEEP THIS MANUAL NEAR THE FURNACE FOR FUTURE
REFERENCE.
Manufactured by :
Industries Dettson inc.
Sherbrooke, Québec - Canada
www.dettson.ca
www.ouellet.com 1 800 463-7043

2
TABLE OF CONTENT
1- SAFETY ......................................................3
1.1-DANGER, WARNING AND CAUTION............3
1.2-IMPORTANT INFORMATION .........................3
1.3-DANGER OF FREEZING ................................3
2- INSTALLATION ..........................................3
2.1-POSITIONING THE FURNACE.......................4
2.2-CLEARANCES TO COMBUSTIBLE
MATERIAL.............................................................4
2.2.1- Heating unit............................................................4
2.2.2- Supply air ducts.....................................................4
2.3-CONFIGURATIONS.........................................4
2.3.1- Upflow installation.................................................4
2.3.2- Downflow installation............................................4
2.3.3- Horizontal installation ...........................................4
2.4-ELECTRICAL SYSTEM...................................4
2.4.1- Conversion from two to one supply wires for
models 27 kW and more.......................................................5
2.5-INSTALLATION OF THE THERMOSTAT ......5
2.5.1- Anticipator adjustment (if required) on
thermostat equipped with heat anticipator adjustment ....6
2.5.2- Air ducts .................................................................6
2.6-SUPPLY AIR ADJUSTMENTS........................6
2.7-INSTALLATION OF ACCESSORIES..............7
2.7.1- Humidifier and electronic air cleaner...................7
2.7.2- Use of a heat pump................................................7
3- OPERATION ...............................................7
3.1-START-UP .......................................................7
3.2-USE OF MANUAL FURNACE CONTROLS
ON ADVANTAGE FURNACE................................7
3.3-OPERATING SEQUENCE...............................7
3.3.1- Heating mode.........................................................7
3.3.2- Cooling mode.........................................................8
3.3.3- Continuous fan speed ...........................................8
3.4-AIRFLOW VERIFICATION..............................8
3.4.1- Supply Air Temperature Rise Test .......................8
3.4.2- High limit verification ............................................8
4- MAINTENANCE.......................................... 8
4.1-AIR FILTER .....................................................8
4.2-MOTOR LUBRICATION..................................8
5- FURNACE INFORMATION......................... 9
TABLES
Table 1: Supply air adjustment on cooling mode......... 6
Table 2: Technical specifications ................................. 10
Table 3: Airflow (CFM) - UNIQUE with 1/3 HP motor.. 11
Table 4: Airflow (CFM) - UNIQUE with 1 HP motor..... 11
Table 5: Parts list, UNIQUE Comfort PSC .................... 15
Table 6: Parts list, UNIQUE Advantage PSC............... 17
FIGURES
Figure 1: Upflow installation............................................ 4
Figure 2: Downflow installation....................................... 4
Figure 3: Horizontal installation...................................... 4
Figure 4 : Conversion from two to one supply wires... 5
Figure 5: 1-stage thermostat, electric heating only...... 5
Figure 6: 2-stage thermostat, electric heating only...... 5
Figure 7: 1-stage thermostat with outdoor control for 2-
stage function, electric heating only............................... 5
Figure 8: 1-stage thermostat, electric heating and air
conditioning........................................................................ 6
Figure 9: 2-stage thermostat, electric heating and air
conditioning........................................................................ 6
Figure 10 : Advantage furnace controls ........................ 7
Figure 11 : Furnace dimensions................................... 11
Figure 12 : Electrical diagram, UNIQUE Comfort PSC12
Figure 13 : Electrical diagram, UNIQUE Advantage PSC
........................................................................................... 12
Figure 14: Parts list, UNIQUE Comfort PSC................. 13
Figure 15: Parts list, UNIQUE Advantage PSC............ 16

3
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 and 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.
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.

4
The unit requires a 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.
CAUTION
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.
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. 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 installation
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.
The downflow base OFE-SO2 can be used. Refer to Figure 2
and the installation instructions provided with the base.
Figure 2: Downflow installation
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.
The furnace can be installed in the horizontal position, either
suspended or on a combustible floor with a choice of right or left
discharge. Refer to Figure 3 for additional details.
Figure 3: Horizontal installation
2.4- ELECTRICAL SYSTEM
The UNIQUE 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.
OFE-SO2

5
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 lastedition 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.
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.
The models of 27 kW and more are pre-wired in factory with two
terminal blocks allowing the usage of two smaller gauge wires.
2.4.1- Conversion from two to one supply wires for
models 27 kW and more
WARNING
Risk of fire.
When using one terminal block on models over 25 kW, 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 25 kW 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 13.
Figure 4 : Conversion from two to one supply wires
Before After
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 ofthe
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 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
conditioning
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:
a. Use two elbows between each outlet and the supply and
return air plenum;
b. Cover the vertical sections of the supply and return air duct
with soundproofing material;
c. Use baffles in short radius elbows;
d. 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 3 and
Table 4 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), 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.
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.

7
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
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. A separate power source must
be used if the accessories draw more than 2 amps.
Some accessories require control relays. A location has been
set aside in the unit for the installation of relays: a 24 VAC (part
number OFE-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 according 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 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.

8
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:
0.82 x amps. x volts
Liter/s= -------------------------
Diff. temperature ˚C
3.1 x amps. x volts
CFM = ------------------------
Diff. temperature ˚F
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, 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.
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 at regular intervals.
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.

9
5-FURNACE INFORMATION
Model:
Serial number:
Furnace installation date:
Service telephone # - Day:
Night:
Service technician name and
address:
START-UP RESULTS
Voltage:
Total current consumed by the elements:
Supply air temperature:
Return air temperature:
Supply air duct static pressure:
Return air duct static pressure:
Total pressure:
Calculated air flow:
Current consumed by the blower motor:
Current consumed by the accessories:

10
Table 2: Technical specifications
Capacity 10 15 18 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 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 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
92,124
69,195
102,360
76,884
Temperature rise range @ 240V (°F) 125-45 45-60 55-75 60-80 50-70 50-70 55-75 60-80
Volts - Hertz - Phase
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 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
Electrical element #3 @ 240V / 208V
(Kw)
5/ 3.7 4/ 3.1 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 4/ 3.1 5/ 3.7
Electrical element #5 @ 240V / 208V
(Kw)
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 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 / 89.7 113.6 / 98.5
124.3 /
107.7
Total Consumption @ 240V / 208V
(Amp)
44.0 / 38.2 64.7 / 56.1 78.4 / 68.0 85.4 / 74.1 102.4 / 88.7 109.4 / 94.8
119.5 /
103.6
130.2 /
112.8
Ampacity - Terminal block #1 @ 240V
/ 208V ²
54.3 / 47.3 78.9 / 68.6 95.1 / 82.7 103.5 / 90.0
123.5 /
107.3
132.0 /
114.6
54.0 / 47.0 58.2 / 50.7
Ampacity - Terminal block #2 @ 240V
/ 208V ²
- - - - - - 90.0 / 78.0 98.4 / 85.2
Breaker size - Terminal block #1 @
240V / 208V ²
60 / 50 80 / 70 100 / 90 125 / 90 125 / 125 150 / 125 60 / 50 60 / 60
Breaker size - Terminal block #2 @
240V / 208V ²
- - - - - - 90 / 80 100 / 90
Blower speed at 1st stage LOW LOW LOW LOW LOW LOW LOW LOW
Blower speed at 0.50" W.C. stat. press. LOW LOW LOW LOW MED-LOW MED-LOW MED-LOW MED-LOW
Blower speed at 0.20" W.C. stat. press. LOW LOW LOW LOW MED-LOW MED-LOW MED-LOW MED-LOW
Motor (HP) / number of speeds
Nominal blower size (diam. X width)
Overall dim. (width x depth x height)
Supply
Return
Filter quantity and size
Shipping weight
Maximum cooling capacity
OFECxx000 / OFEAxx000
1/3 HP / 240V Motor
RATINGS AND PERFORMANCE
OFEAxx000-1H
1 HP / 240V Motor
48 Kg / 105 lbs
ELECTRICAL SYSTEM
2 wires 240/208 - 60 - 1
BLOWER DATA (factory adjusted for a static pressure of 0.5" W.C.)
1/3 HP / 3 speeds
1 HP / 4 speeds
12 x 8
12 x 9
GENERAL INFORMATION
22" x 22" x 36.5"
20" x 20"
18" x 18"
(1) 20" x 20"
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.

11
Table 3: Airflow (CFM) - UNIQUE with 1/3 HP motor
0.2 0.3 0.4 0.5 0.6 0.7 0.8
LOW 980 950 925 895 865 830 785
MED 1160 1150 1130 1110 1060 1015 960
HIGH 1380 1350 1295 1240 1180 1120 1060
Airflow values in cubic feet per minute (CFM) rounded to the nearest 5 CFM
Data taken with air filter in place.
Blower
speed
External static pressure (inche of W.C.)
Table 4: Airflow (CFM) - UNIQUE with 1 HP motor
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 5 CFM
Data taken with air filter in place.
Blower
speed
External static pressure (inche of W.C.)
Figure 11 : Furnace dimensions

12
Figure 12 : Electrical diagram, UNIQUE Comfort PSC

13
Figure 13: Electrical diagram, UNIQUE Advantage PSC

14
Figure 14: Parts list, UNIQUE Comfort PSC

15
Table 5: Parts list, UNIQUE Comfort PSC
#
Item
Description
Comments
1
OFE-B04431
Acoustic insulation
2
OFE-B04343-03
Left side panel assembly
Left panel, items 3 and 1 included
3
OFE-B04340-02
Left side panel insulation
4
OFE-B04344-01
Back panel assembly
5
OFE-B04341
Top back panel insulation
6
OFE-B04343-01
Right side panel assembly
Right panel, items 7 and 1 included
7
OFE-B04340-01
Right side panel insulation
8
OFE-B04302-02
Top front panel
9
OFE-L01J006
Breaker 60 A
10
OFE-B04310
Breakers support
11
OFE-K03071-A
Sequencer card assembly
Card and plastic pins
12
OFE-B04311
Components support
13
OFE-L01J001
Breaker 15 A
14
OFE-B04000-03
Modified 12 positions terminal
15
OFE-X02330
Label "Terminal OFE C/A"
16
OFE-B04288
Electrical sequencer kit
OFE 18/20kw
17
OFE-B04289
Electrical sequencer kit
OFE 15kw
18
OFE-B04290
Electrical sequencer kit
OFE 10kw
19
OFE-B04365
Door assembly
20
OFE-B04356-02
Blower assembly 1/3hp (240v-PSC)
OFE 10/15/18kw
21
OFE-B04356-04
Blower assembly 1hp (240v-PSC)
OFE 20kw
22
OFE-Z01I036
Blower 112-9R
OFE 20kw
23
OFE-Z01I035
Blower 112-8R
OFE 10/15/18kw
24
OFE-B01889
Motor support band and legs
25
OFE-L06K005
Motor 1hp (240v-PSC)
OFE 20kw
26
OFE-L06G015
Motor 1/3hp (240v-PSC)
OFE 10/15/18kw
27
OFE-B04287
Electrical blower kit
28
OFE-L01I003
Capacitor 10 uF
29
OFE-B01024
Capacitor support
30
OFE-B04303
Floor
31
OFE-B04309
Fan slide
32
OFE-B04304
Fan separator
33
B03299-02
Filter Holder Tip
34
B03298-02
Filter support outline
35
OFE-R02N028
Hi-limit 125+/-5.5C
36
OFE-B04308
Hi-limit deflector
37
OFE-B04305
Front separator
38
OFE-L01H030
Relay DPST 22 VDC
39
OFE-B04369
Electrical power kit
OFE 10 @ 20kw
40
OFE-L01H009
Relay 24 VAC
41
OFE-B04351-02
Element assembly
5 kw
42
OFE-B04351-01
Element assembly
4 kw
43
OFE-B04315-01
Element plate
44
OFE-L01F010
Transformer 208/240/24
45
OFE-L99F007
Terminal bloc 600V/175A (1423570)
46
OFE-B04359
Blower grill
47
OFE-B04306
Deflector
48
OFE-B04307
Element support
Accessories
OFE-SO2
Downflow base
(ref: B03310-04)
OFE-AK2
Adaptor kit 17" x 17"
(ref: B04407)

16
Figure 15: Parts list, UNIQUE Advantage PSC

17
Table 6: Parts list, UNIQUE Advantage PSC
#
Item
Description
Comments
1
OFE-B04431
Acoustic insulation
2
OFE-B04343-04
Left side panel assembly
Left panel, items 3 and 1 included
3
OFE-B04340-02
Left side panel insulation
4
OFE-B04344-02
Back panel assembly
5
OFE-B04341
Top back panel insulation
6
OFE-B04343-02
Right side panel assembly
Right panel, items 7 and 1 included
7
OFE-B04340-01
Right side panel insulation
8
OFE-B04302-01
Top front panel
9
OFE-B04312
Breakers support
10
OFE-L01J006
Breaker 60 A
11
OFE-K03071-A
Sequencer card assembly
Card and plastic pîns
12
OFE-B04000-03
Modified 12 positions terminal
13
OFE-X02330
Label "Terminal OFE C/A"
14
OFE-B04421
Components support
15
OFE-X50066
Cosmetic "OFE A" 3 breaker
OFE 23/25/27/30kw
16
OFE-X50065
Cosmetic "OFE A" 2 breaker
OFE 15/18/20kw
17
OFE-X50064
Cosmetic "OFE A" 1 breaker
OFE 10kw
18
OFE-L01L006
Indicator light
19
OFE-L07F015
Switch SPDT
20
OFE-L01J001
Breaker 15 A
21
OFE-B04293
Electrical sequencer kit
OFE 27/30kw
22
OFE-B04294
Electrical sequencer kit
OFE 23/25kw
23
OFE-B04295
Electrical sequencer kit
OFE 18/20kw
24
OFE-B04296
Electrical sequencer kit
OFE 15kw
25
OFE-B04297
Electrical sequencer kit
OFE 10kw
26
OFE-B04275
Plastic top door
27
OFE-X50053
Label logo Ouellet
28
OFE-B04349
Bottom door assembly
29
OFE-X00505
Label warning remove screw
30
OFE-B04356-04
Blower assembly 1hp (240v-PSC)
OFE 23/25/27/30kw
31
OFE-B04356-02
Blower assembly 1/3hp (240v-PSC)
OFE 10/15/18/20kw
32
OFE-Z01I036
Blower 112-9R
OFE 23/25/27/30kw
33
OFE-Z01I035
Blower 112-8R
OFE 10/15/18/20kw
34
OFE-B01889
Motor support band and legs
35
OFE-L06K005
Motor 1hp (240v-PSC)
OFE 23/25/27/30kw
36
OFE-L06G015
Motor 1/3hp (240v-PSC)
OFE 10/15/18/20kw
37
OFE-B04287
Electrical blower kit
38
OFE-L01I003
Capacitor 10 uF
39
OFE-B01024
Capacitor support
40
OFE-B04303
Floor
41
OFE-B04309
Fan slide
42
OFE-B04304
Fan separator
43
B03299-02
Filter holder tip
44
B03298-02
Filter support outline
45
OFE-R02N028
Hi-limit 125+/-5.5C
46
OFE-B04308
Hi-limit deflector
47
OFE-B04305
Front separator
48
OFE-L01H030
Relay DPST 22 VDC
49
OFE-B04369
Electrical power kit
50
OFE-L01H009
Relay 24 VAC
51
OFE-B04351-02
Element assembly
5kw
52
OFE-B04351-01
Element assembly
4kw
53
OFE-B04315-01
Element plate
54
OFE-L01F010
Transformer 208/240/24
55
OFE-L99F007
Terminal bloc 600V/175A (1423570)
3 positions
56
OFE-L99F008
Terminal bloc 600V/175A (1422570)
2 positions (27 & 30 kW only)
57
OFE-B04359
Blower grill
58
OFE-B04306
Deflector
59
OFE-B04307
Element support
Accessories
OFE-SO2
Downflow base
(ref: B03310-04)
OFE-AK2
Adaptor kit 17" x 17"
(ref: B04407)

18