Stelpro SFECM series User manual
INSSFECMI0914
INSTALLATION GUIDE
SFECM SERIES
ELECTRIC FURNACE
REPLACEMENT COMPONENT LIST INCLUDED
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For further information or to consult this guide online, please visit our website at www.stelpro.com
This unit
complies with
the CSA and UL
standards
This unit is approved according
to the Canadian and American
manufacturing standards.
This section must be read carefully by the installer.
The installer must also read the user’s guide since it contains other important information.
2INSSFECMI0914
Before installing and operating this product, the user and/or installer must read, understand and follow these instructions and keep them handy for future
reference. If these instructions are not followed, the warranty will be considered null and void and the manufacturer deems no further responsibility for this
product.
certied electrician, according to the electrical and building codes
effective in your region.
The following instructions must be adhered to in order to avoid personal injuries or property damages, serious injuries and potentially fatal electric shocks.
Make sure that all screws and electrical terminal connections are tightly secured before operating the unit in case they would have loosened during
transportation.
Protect the heating unit with the appropriate circuit breaker or fuse, in accordance with the nameplate.
Make sure the line voltage (volt) is consistent with that indicated on the unit’s nameplate.
This unit must be grounded.
Switch off the power at the circuit breaker/fuse before installing, repairing and cleaning the unit.
Make sure the unit is appropriate for the intended use (if needed, refer to the product catalog or a representative).
Respect distances and positions indicated in the installation section.
void.
This unit must not come into contact with a water source and must be protected from splashes (e.g. a wet mop). Do not use it if any part has been immersed.
Moreover, do not turn it on or off when standing in water or if your hands are wet.
When cutting a piece of steel for the installation of the return duct, do not damage electrical wiring of the unit.
Because this unit is hot when in use, it may pose risks even in normal operation. Therefore, be careful and responsible when using it. To avoid burns, do
not let bare skin touch hot surfaces. Let the unit cool down for a few minutes before handling it (it stays warm for some time after shut-down).
Some areas are dustier than others. Thus, it is the user’s responsibility to evaluate if the lter must be changed
Thermal protection activation indicates that the unit has been subjected to abnormal operating conditions. If the thermal protection remains activated or
damaged. (Refer to the limited warranty).
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
WARNING
Note:
instances, the instruction manual may not entirely match all the functions of the actual product. Therefore, the actual product and packaging, as well as the name
and illustration, may differ from the manual.
TECHNICAL DRAWINGS
DISCHARGE
TOP
1 7/16"
439mm
17 1/4"1 7/16"
36mm
36mm
510.5mm
17 3/4"
451mm
20"
22 1/16"
561mm
BREAKER
CONTROL PANEL
FILTER RACK
FRONT
218mm
18 7/8"
32 1/2"
827mm
25.4mm
1"
479mm
8 9/16"
18 3/4"
476mm
BACK & BOTTOM
RETURN
TYPICAL ON BOTH SIDES,
SIDE
17 1/2"
440mm
17 1/2"
440mm
KO 1 3/4'' [44mm] & 1 1/8''
KO 1 3/8'' [35mm] & 1 1/8''
LOW VOLTAGE INLET
3INSSFECMI0914
INSTALLATION
SPECIFICATIONS
AIR RETURN
UPFLOW POSITION
DISCHARGE
DOWNFLOW POSITION
DISCHARGE
AIR RETURN
CODES FOR THE
FLOOR ADAPTOR
SEE EFFECTIVE
COMBUSTIBLE
FLOOR
AIR RETURN
HORIZONTAL POSITION
DISCHARGE
N.B. Cut off power supply at circuit breaker/fuse before proceeding to the installation.
to many applications and are suitable for horizontal, upow and downow
LOCATION
indicate to the furnace user the location of the switches and disconnects. He must be able to quickly identify them in case of an emergency.
CLEARANCE
you have any questions concerning clearances.
Since it is necessary to open the door in the front to perform the furnace maintenance inspection, you must leave at least a 24-inch
clearance in front of this door.
ELECTRIC FURNACE
TYPE VOLTS KW AMP HP LENGTH (IN.) WIDTH (IN.) DEPTH (IN.) LB KG
SFECM1021 240/208 44/38 1/2 32 1/2 20 100
SFECM1521 240/208 1/2 32 1/2 20 100
SFECM1821 240/208 1/2 32 1/2 20 100
SFECM2021 240/208 1/2 32 1/2 20 100
SFECM2321 240/208 1/2 32 1/2 20 100
SFECM2721 240/208 119/104 1 32 1/2 20 48
SFECM3021 240/208 130/113 1 32 1/2 20 48
4INSSFECMI0914
DUCTS AND FILTERS
follow these instructions:
PLENUM TEMPERATURE CONTROL POTENTIOMETER
The Stelpro electric furnace is equipped with a plenum temperature sensor. You can select the plenum temperature set point with a potentiometer
OPTIONAL ACCESSORIES
The furnace is equipped with all the devices required for the addition of an air-conditioner or a heat pump (except the heat-cool thermostat). The
refrigerant and drainage pipes must be installed either in the furnace supply or return duct and should not prevent you from removing the door in
front of the furnace.
You can also install a thermostat with an outdoor sensor or a two-stage thermostat to control your furnace. To do so, you must refer to the
instructions supplied with the thermostat (see also the illustrations on following page) as well as the furnace wiring diagram.
When the electric furnace is used in combination with a wood heating unit, you must connect the thermostat of the wood heating unit across low
voltage terminals R and G of the furnace. This thermostat will automatically turn the blower of the furnace on.
N.B. Please note that if one of these accessories is installed, you must refer to the appropriate guide.
INSSFECMI0914
15, 17.5 & 20 kW
L1
L2
GR
ELECTRICAL CONNECTIONS OF THE FURNACE
POWER CONNECTION DRAWINGS (MECHANICAL)
22.5, 27.5 & 30 kW15, 17.5 & 20 kW10 kW
Note that this product must be connected by a qualied electrician according to the electrical and building codes effective in your
region. For 240 VAC connection, you can use copper or aluminum wire (75°C (165°F)), except for 27.5 kw and 30 kw models where only
copper wire is allowed.
HAR-097
HAR-096
INSSFECMI0914
ELECTRICAL CONNECTION OF THE THERMOSTAT
The thermostat must be mounted to a
exempt from pipes or air ducts.
Do not install the thermostat in a location
where temperature measurements could be
altered. For example:
- close to a window, on an external wall, or
- exposed directly to the light or heat of the
a door), or with frequent air draft conditions
(e.g. head of stairs).
the drafts which can alter temperature
measurements. Read the user’s guide of the
thermostat carefully and refer to the following
illustrations to connect the thermostat.
controlled directly from the furnace. There
is a terminal block for this purpose in the
furnace as shown here in the diagram.
The terminal block is connected to an
internal relay that activates the auxiliary
devices when the blower of the furnace is
in operation.
ELECTRICAL CONNECTION OF AN ELECTRONIC FILTER AND A HUMIDIFIER
INSSFECMI0914
HEATING DEMAND
ONE-STAGE THERMOSTAT
W1- The thermostat closes the R-W1 circuit, which activates 100%
of the heating sequence. The blower starts up at medium speed and
the furnace elements are activated one by one to reach the adjustable
temperature limit set on the potentiometer of the furnace control card.
If there is still a W1 heating demand after 30 minutes, the heating
sequence continues as per the W2 sequence.
Or W2- If there is still a W1 heating demand after 30 minutes, the
sequence continues as follows: the blower switches to the medium
speed and all the furnace elements are activated one by one (100%
heating). The plenum temperature is still limited by the potentiometer
of the control card.
TWO-STAGE THERMOSTAT
The control card of the furnace auto-detects the two stages of the
thermostat.
W1-
at low speed and the furnace elements are activated one by one to
reach the adjustable temperature limit set by the potentiometer on the
furnace control card.
If there is still a W1 heating demand after 30 minutes, the heating
sequence continues as per the W2 sequence.
And/Or W2- If the thermostat closes the R-W2 circuit, the sequence
continues as follows: the blower switches to the medium speed and all
the furnace elements are activated one by one (100% heating). The
plenum temperature is still limited by the potentiometer of the control
card.
Standard MODE
100% Heat,
Med speed
Low speed
1 stage W1 2 stages W1 W2 W1>30 min
Activation of relays, 3-sec. interval
MODES
ECO
STANDARD
HIGH/HAUTE
THERMOSTAT
MAX
MINLOW/BASSE
CONTROL PANEL
1 4
283 910
SFECM
SERIES
SÉRIE
OPERATION
1. CONTINUOUS VENTILATION
high or low speed continuous ventilation mode.
2. LOW SPEED CONTINUOUS VENTILATION green LED: Indicates
that the low speed continuous ventilation mode is activated.
3. HIGH SPEED CONTINUOUS VENTILATION green LED: Indicates
that the high speed continuous ventilation mode is activated.
4. MODE
STANDARD MODE green LED: Indicates Standard mode is
activated.
ECO MODE green LED: Indicates that the Eco mode is activated.
CONTINUOUS HEATING
maximum or minimum continuous heating mode.
8. MIN CONTINUOUS HEATING green LED: Indicates that the
minimum of heating capacity is activated.
9. MAX CONTINUOUS HEATING green LED: Indicates that the
maximum of continuous heating mode is activated.
10. THERMOSTAT yellow LED: Indicates that the furnace is receiving a
heating demand from the thermostat.
LEGEND
8INSSFECMI0914
CONTINUOUS VENTILATION
panel picture).
CONTINUOUS HEATING
The continuous heating option allows one or two heating elements to operate continuously. The user can select the minimum (one element) or
mode is useful from the beginning to the end of the heating season since it reduces temperature variations into the house. If the minimum or
maximum continuous heating option is activated by the user, the furnace will deactivate it when the heating season ends (more than two hours
without any heating demand). Moreover, it will reactivate it when a new heating season begins. Note that the pilot light indicating the heating
option will blink if the furnace deactivates this option because the heating season is over. This indicates that the continuous heating will be
activated again at the start of the next heating season.
AIR CONDITIONING
R-Y terminals are activated, the blower starts-up at high speed. See the connection diagram.
HEAT PUMP
A
the heat pump is installed Before the furnace (air return), as shown in the next picture. Once again, when the R-Y terminals are activated, the
blower starts-up at high speed.
TYPE B
MIN. 12"
TYPE "A"
AIR RETURN
AIR SUPPLY
HEAT PUMP
HEAT PUMP
AIR RETURN
TYPE "B"
AIR SUPPLY
MIN. 12"
TYPE "A"
AIR RETURN
AIR SUPPLY
HEAT PUMP
HEAT PUMP
AIR RETURN
TYPE "B"
AIR SUPPLY
9INSSFECMI0914
TYPE A: HEAT PUMP OR AIR CONDITIONING
TYPE B: HEAT PUMP ONLY
press one of the three buttons on the control panel and then simultaneously put the breaker ON. The button located on the left side of the control
which installation has been programmed.
The heat pump can operate all year and allows the user to make energy savings due to the plenum temperature regulation function (exclusive to
Stelpro). This function ensures a constant temperature into the plenum and the ducts. When it is cold, the heating capacity of the heat pump is
pump is activated and begins to cool the air, the furnace will quickly increase the heating capacity in order to offset the cooling effect caused by the
defrosting mode of the heat pump.
INPUTS HEATING LIMIT TEMP. FAN
1 STAGE 2 STAGES
G W1 W1 W2 Y O/B 50% 100% ADJ. HIGH MED LOW
1 0 0 0 0 ON
1 - 0 0 ON ON
- 1 0 0 ON ON
1 0 ON ON
1ON
INPUTS HEATING LIMIT TEMP. FAN
1 STAGE 2 STAGES
G W1 W1 W2 Y O/B 50% 100% ADJ. HIGH MED LOW
1 0 0 0 0 ON
1 - 0 0 ON ON
- 1 0 0 ON ON
1 0 ON ON
Type B
(Before)
1 1 ON
(Priority heating)
1 0 ON ON
1 1 ON ON
(Priority cooling)
1 0 ON
Standard
Activation of relays, 3-sec. interval
100% Heat,
Med speed
Low speed
1 stage W1 2 stages W1 W2 YW1>30 min
10 INSSFECMI0914
100% Heat,
Med speed,
Low speed
30 MIN
MODES
-
medium speed.
100% Heat,
Med speed,
Low speed
10 MIN
pump is activated (Y demand), no electric heating will be supplied by the furnace.
of heating capacity is reached.
11 INSSFECMI0914
AIRFLOW SETTINGS
to each operation mode of the furnace blower. The blower has four
adjustments:
of these four modes. The potentiometers are located on the furnace
control card. The adjustment scales vary from one model to the other
according to the capacity of the unit and are represented on the table
1. Heating temperature 2. Heating ventilation 3. Continuous ventilation 4. Y ventilation
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
1021
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 300 700 300 700 400
2 366 766 400 800 575
3 433 833 500 900 750
4500 900 600 1000 925
5 566 966 700 1100 1100
6 633 1033 800 1200 1275
7 700 1100 900 1300 1450
RECOMMANDÉ / RECOMMENDED
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
1521
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 300 700 350 850 600
2 366 766 530 1030 742
3 433 833 710 1210 884
4500 900 900 1400 1025
5 566 966 1080 1450 1167
6 633 1033 1260 1450 1309
7 700 1100 1450 1450 1450
RECOMMANDÉ / RECOMMENDED
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
1821
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 300 700 350 850 600
2 366 766 530 1030 742
3 433 833 710 1210 884
4500 900 900 1400 1025
5 566 966 1080 1450 1167
6 633 1033 1260 1450 1309
7 700 1100 1450 1450 1450
RECOMMANDÉ / RECOMMENDED
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
2021
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 300 700 450 1150 800
2 366 766 615 1315 908
3 433 833 785 1450 1016
4500 900 950 1450 1125
5 566 966 1115 1450 1234
6 633 1033 1285 1450 1342
7 700 1100 1450 1450 1450
RECOMMANDÉ / RECOMMENDED
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
2321
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 300 700 450 1150 800
2 366 766 615 1315 908
3 433 833 785 1450 1016
4500 900 950 1450 1125
5 566 966 1115 1450 1234
6 633 1033 1285 1450 1342
7 700 1100 1450 1450 1450
RECOMMANDÉ / RECOMMENDED
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
2021-1
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 400 1200 450 1150 800
2 533 1333 710 1410 1033
3 666 1466 965 1665 1266
4800 1600 1225 1925 1500
5 933 1733 1485 2000 1733
6 1066 1866 1740 2000 1966
7 1200 2000 2000 2000 2200
RECOMMANDÉ / RECOMMENDED
12 INSSFECMI0914
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
2321-1
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 400 1200 450 1150 800
2 533 1333 710 1410 1033
3 666 1466 965 1665 1266
4800 1600 1225 1925 1500
5 933 1733 1485 2000 1733
6 1066 1866 1740 2000 1966
7 1200 2000 2000 2000 2200
RECOMMANDÉ / RECOMMENDED
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
2721
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 400 1200 750 1500 800
2 533 1333 992 1742 1033
3 666 1466 1233 1983 1266
4800 1600 1475 2200 1500
5 933 1733 1717 2200 1733
6 1066 1866 1740 2200 1966
7 1200 2000 2200 2200 2200
RECOMMANDÉ / RECOMMENDED
TABLEAU D’AJUSTEMENT DES DÉBITS D’AIR
AIRFLOW SETTINGS TABLE
MODÈLE / MODEL
3021
CONT. VENT. W VENT. Y VENT.
LOW HIGH W1 W2
1 400 1200 750 1500 800
2 533 1333 992 1742 1033
3 666 1466 1233 1983 1266
4800 1600 1475 2200 1500
5 933 1733 1717 2200 1733
6 1066 1866 1740 2200 1966
7 1200 2000 2200 2200 2200
RECOMMANDÉ / RECOMMENDED
When the furnace has run at full capacity for 10 minutes, block the supply and return air openings and measure the supply air temperature at
a point that is not exposed to heat radiation from the elements. The elements are supposed to shut down one by one before the temperature
If you install a thermostat equipped with a heat anticipator, refer to the user’s guide of the thermostat to adjust it.
PROCEDURES TO FOLLOW
3. Increase the temperature set point of the thermostat in order to call for heat and let the furnace run for 3 to 4 minutes so that it reaches its
4. Once the current is stable, take the reading and adjust the anticipator to that value. Set the anticipator to a higher value if longer heating
cycles are required.
VERIFYING THE HIGH LIMIT THERMAL PROTECTIONS
ANTICIPATOR
13 INSSFECMI0914
N.B. In order for the warranty to be valid, the unit must be
cleaned regularly.
Cut off power supply at circuit breaker/fuse before cleaning the
rag and non-abrasive dish soap. Do not use abrasive or chemical
in a very dusty location, use a vacuum brush to remove dust and
other foreign objects from the grilles. Note that cigarette smoke
could yellow the discharge grille and that the best way to prevent it
is to clean the unit on a regular basis.
Do not use cleaning products identied with these symbols:
N.B. Note that there is electrical current linked to the unit
even if the thermostat is set off. This means that there is a
risk of electric shock as long as the unit is energized.
PREVENTIVE MAINTENANCE
However, before calling a technician, check the following points.
1. Make sure fuses or circuit breakers are activated.
temperature. If heating does not start, cut off the power supply and call
a technician.
N.B. When calling a technician for maintenance or to order a
replacement part, specify the model of your furnace as well as
its serial number.
AIR FILTER
unit to work harder to maintain the desired temperature. Therefore, it
uses more energy and increases heating costs.
to four times a year, according to the model used and the installation
N.B. Never operate the unit without a lter in place.
- Excessive accumulation of dirt or dust on furnace components.
- Damaged components or surfaces.
- Presence of water inside or outside the furnace.
If you encounter any of these problems, do not operate the furnace.
BLOWER
The blower motor is sealed and permanently lubricated, so it is not
necessary to lubricate it.
will become dust laden after a few months. The entire blower assembly
should be inspected annually. If needed, vacuum out the dust. If you
cannot clean the blower without removing it from the furnace, this
MAINTENANCE
14 INSSFECMI0914
CONTROL CARD AUTODIAGNOSTIC
The control card of the furnace is equipped with a pilot LED that allow easy and quick diagnostic of its essential functions. The yellow LED is
The pilot LED will start to blink continuously when an electrical problem occurs.
N.B. If you do not solve the problem after checking these points, cut off the power supply at the main electrical panel and contact
our customer service (see the “Limited warranty” section to obtain the phone numbers).
TROUBLESHOOTING
PROBLEM DEFECTIVE PART OR PART TO CHECK
The unit does not work
- Defective thermostat, wrong thermostat setting or positionning
- Open circuit breaker or fuse
- Faulty connections
- Faulty motor or condensator
- Faulty blower control switch
- Faulty transformator
- See above:
The unit runs continuously
- Defective thermostat, wrong thermostat setting or positionning
- Heat losses greater than the unit capacity
- Faulty relay
- Thermostat wire incorrectly connected to the furnace
- See above:
The unit cycles under control of the thermal protection (overheat
indicator)
- Blocked air vents
- Defective motor
Overheating - Defective thermostat, wrong thermostat setting or positionning
- Defective motor
The breaker trips when the heater is turned on - Faulty connections
Elements are on, but the motor does not work - Defective motor or condensator
- Faulty relay
The desired room temperature cannot be reached
- One or more defective elements
- Defective thermostat or wrong thermostat setting
- Heat losses greater than the unit capacity
- Faulty relay
INSSFECMI0914
REPLACEMENT COMPONENT LIST
5
DETAIL B
SWIVEL PANEL HIDDEN FOR MORE CLARITY
9
7
10
DETAIL A
3
4
A
8
1
2
6
B
REF. # PART # DESCRIPTION
1 ELF-SFE0221-1
1 ELF-SFE0221-2
1
1
2 BLO-004
2
3 MO-034 ECM MOTOR 1/2HP
3 ECM MOTOR 1 HP
4
4
REL-021
8 CIR-024
9 TRF200040D
10
INSSFECMI0914
STELPRO DESIGN INC. | Saint-Bruno-de-Montarville | Québec | J3V 6L7
Please read this limited warranty carefully. Subject to the terms of this
warranty, Stelpro warrants its products and their components against defects in workmanship and/or materials for the following periods from the date
of purchase: 5 years
CLAIM PROCEDURE
If at any time during the warranty period the unit becomes defective, you must cut off the power supply at the main electrical panel and contact 1) your
installer or distributor, 2) your service center or 3) Stelpro’s customer service department. In all cases, you must have a copy of the invoice and
provide the information written on the product nameplate. Stelpro reserves the right to examine or to ask one of its representatives to examine
the product itself or any part of it before honoring the warranty. Stelpro reserves the right to replace the entire unit, refund its purchase price or repair a
1-800-363-3414 (electricians and distributors - French), 1-800-343-1022 (electricians and distributors - English), or 1-866-766-6020 (consumers).
CONDITIONS, EXCLUSIONS AND DISCLAIMER OF LIABILITY
This warranty is exclusive and in lieu of all other representations and warranties (except of title), expressed or implied, and Stelpro expressly disclaims
Stelpro’s liability with respect to products is limited as provided above. Stelpro shall not be subject to any other obligations or liabilities whatsoever,
whether based on contract, tort or other theories of law, with respect to goods or services furnished by it, or any undertakings, acts or omissions relating
thereto. Without limiting the generality of the foregoing, Stelpro expressly disclaims any liability for property or personal injury damages, penalties,
disclaims all consequential, incidental and contingent damages whatsoever.
damages, etc. This warranty does not cover any accidental or intentional losses or damages, nor does it cover damages caused by negligence of the
user or owner of the product. Moreover, it does not cover the cost of disconnection, transport, and installation.
The warranty is limited to the repair or the replacement of the unit or the refund of its purchase price, at the discretion of Stelpro
period. This warranty will be considered null and void and Stelpro will have the right to refuse any claims if products have been altered without the
or discoloration caused by excessive heat, chemical cleaning products and abrasive agents. It does not cover any damage that occurred during the
shipping.
Some states and provinces do not allow the exclusion or limitation of incidental or consequential damages and some of them do not allow limitations on
have other rights which vary from state to state or from province to province.
LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY
LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY
LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY
LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY LIMITED WARRANTY
LIMITED WARRANTY
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