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INSSFECMI0914

airflow settings

The SFECM furnace is equipped with an efficient ECM motor that can 

maintain  constant  airflow  regardless  of  the  static  pressure  variation 

in  the  ducts.  It  also  ensures  an  easy  setting  of  the  airflows  related 

to each operation mode of the furnace blower. The blower has four 

adjustments:

A  potentiometer  allowing  to  adjust  the  airflow  corresponds  to  each 

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 

below. The airflows can be adjusted while the furnace is running. To 

adjust airflows, you must set the potentiometers to the desired values. 

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

4

500

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

4

500

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

4

500

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

4

500

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

4

500

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

4

800

1600

1225

1925

1500

5

933

1733

1485

2000

1733

6

1066

1866

1740

2000

1966

7

1200

2000

2000

2000

2200

 

 

 

RECOMMANDÉ / RECOMMENDED

Summary of Contents for SFECM series

Page 1: ...urther 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 Amer...

Page 2: ...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 Never block air vents This obstruction could lead...

Page 3: ...ocated as centrally as possible in the area to heat in order to optimize air dissipation in all the rooms Clearance This furnace is approved for zero inch clearance Meaning that you can install it dir...

Page 4: ...with a plenum temperature sensor You can select the plenum temperature set point with a potentiometer installed on the control card The default factory set point is 45 C 113 F You can select the set p...

Page 5: ...C power source For 240V power supply either copper or aluminum wires can be used except for 27 5 and 30kW models where only copper wire can be used see the power connection illustration below If you w...

Page 6: ...close or in front of an air outlet close to concealed ducts or a chimney and in a location with poor air flow e g behind a door or with frequent air draft conditions e g head of stairs Seal the wall o...

Page 7: ...e 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 o...

Page 8: ...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 se...

Page 9: ...indicate 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 Thi...

Page 10: ...ating power will ramp up to 50 heating for five 5 minutes If a heating demand lasts 30 minutes a second sequence of five 5 minutes activates a ramp up of the elements to 100 heating at medium speed He...

Page 11: ...700 350 850 600 2 366 766 530 1030 742 3 433 833 710 1210 884 4 500 900 900 1400 1025 5 566 966 1080 1450 1167 6 633 1033 1260 1450 1309 7 700 1100 1450 1450 1450 RECOMMAND RECOMMENDED TABLEAU D AJUST...

Page 12: ...1966 7 1200 2000 2200 2200 2200 RECOMMAND 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 poi...

Page 13: ...specify the model of your furnace as well as its serial number Air filter Excessive dust or dirt accumulation can block the airflow forcing the unit to work harder to maintain the desired temperature...

Page 14: ...condensator Faulty blower control switch Faulty transformator See above control card autodiagnostic The unit runs continuously Defective thermostat wrong thermostat setting or positionning Heat losses...

Page 15: ...Y SFE 5KW 240V 1PH 11 LONG 1 ELF SFE0521 2 ELEMENT ASSEMBLY SFE 5KW 240V 1PH 14 LONG 2 BLO 004 SQUIRREL CAGE BLOWER 10 8 2 BLO 005 SQUIRREL CAGE BLOWER 12 11 3 MO 034 ECM MOTOR 1 2HP 3 MO 035 ECM MOTO...

Page 16: ...r property or personal injury damages penalties special or punitive damages damages for lost profits loss of use of equipment cost of capital cost of substitute products facilities or services shutdow...

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