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INSTALLATION GUIDE
SFE SERIES
ELECTRIC FURNACE
This section must be read carefully by the installer.
The installer must also read the user's guide since it contains other important information.
For further information or to consult this guide online, please visit our website at www.stelpro.com
REPLACEMENT COMPONENT LIST INCLUDED
This unit
complies with
the CSA and UL
standards
This unit is approved according
to the Canadian and American
manufacturing standards.
INSSFEI0917
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Table of Contents
Related Manuals for Stelpro SFE2721
Summary of Contents for Stelpro SFE2721
- Page 1 This section must be read carefully by the installer. The installer must also read the user’s guide since it contains other important information. For further information or to consult this guide online, please visit our website at www.stelpro.com INSSFEI0917...
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Page 2: Technical Drawings
WARNING 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. -
Page 3: Specifications
SFE2021 240/208 20/15 85/74 32 1/2 22 1/16 SFE2321 240/208 22.5/16.9 96/84 32 1/2 22 1/16 SFE2721 240/208 27.5/20.7 119/104 32 1/2 22 1/16 SFE3021 240/208 30/22.5 130/113 32 1/2 22 1/16 N.B. Please consult CFM/SPEED TABLE for more technical specifications OPTIONAL 120V MOTOR ON REQUEST (UP TO 27.5 KW) -
Page 4: Ducts And Filters
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 installed on the control card. The default factory set point is 60°C (140°F). You can select the set point from a temperature range between 40°C (104°F) and 70°C (158°F). - Page 5 ELECTRICAL CONNECTIONS OF THE FURNACE Note that this product must be connected by a qualified 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.
- Page 6 ELECTRICAL CONNECTION OF THE THERMOSTAT The thermostat must be mounted to a FURNACE TO 24 V THERMOSTAT CONNECTIONS WITH HEAT PUMP connection box, at around 1.5 m (5 feet) above the floor level, on a section of the wall * R terminal: 1A maximum exempt from pipes or air ducts.
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Page 7: Operation
OPERATION CONTROL PANEL 9 10 THERMOSTAT HIGH/HAUTE STANDARD LOW/BASSE MODES LEGEND 1. CONTINUOUS VENTILATION button: provides the 7. CONTINUOUS HEATING button: allows the selection of the selection of the high or low speed continuous ventilation mode. maximum or minimum continuous heating mode. 2. -
Page 8: Air Conditioning
HEAT PUMP If a heat pump is installed in your central heating system, the Stelpro electric furnace offers the installer two types of installations: type ”A” or type ”B”. Installation ”A” must be selected when the heat pump is installed After the furnace (air supply), and installation ”B” must be selected when the heat pump is installed Before the furnace (air return), as shown in the next picture. - Page 9 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 reduced.
- Page 10 MODES The user can select two different heating modes by pressing the button located in the middle of the control panel (item #4 in the control panel picture). The two modes affect the heating demand and the functions when used with the heat pump and the STANDARD mode described previ- ously.
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Page 11: Start-Up Procedure
START-UP PROCEDURE Please make sure the operating sequence has been duly followed and that all the electric elements operate efficiently. SFE series blower motor has 4 speeds (27.5 kW and 30 kW models have 3 speeds). They are factory adjusted according to the desired airflow. (Please refer to the table on the following page for more details). - Page 12 M.Low M.High High Medium Low SFE2021-1 (20kW) Medium High SFE2321-1 (22.5kW) Medium High Motor Speeds Motor Speeds SFE2721 (27.5kW) Medium High (1/3hp) (1hp) SFE3021 (30kW) Medium High Motor Relay 1 - Cont. Ventilation Speed & 50% Heating speed Motor Relay 2 - 100% Heating Speed...
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Page 13: Maintenance
ANTICIPATOR If you install a thermostat equipped with a heat anticipator, refer to the user’s guide of the thermostat to adjust it. Using an ampmeter, measure the current on the single stage thermostat. PROCEDURES TO FOLLOW 1. Set the anticipator to its highest setting (ineffective); 2. -
Page 14: Troubleshooting
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 located at the top right side of the control panel (item #10 of the control panel picture). The pilot LED will start to blink continuously when an electrical problem occurs. - Page 15 REPLACEMENT COMPONENT LIST REF. # PART # DESCRIPTION ELF-SFE0221-1 ELEMENT ASSEMBLY SFE 2.5KW/240V/1PH 11’’ LONG ELF-SFE0221-2 ELEMENT ASSEMBLY SFE 2.5KW/240V/1PH 14’’ LONG ELF-SFE0521-1 ELEMENT ASSEMBLY SFE 5KW/240V/1PH 11’’ LONG ELF-SFE0521-2 ELEMENT ASSEMBLY SFE 5KW/240V/1PH 14’’ LONG BLO-004 SQUIRREL CAGE & BLOWER 10-8 BLO-005 SQUIRREL CAGE &...
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Page 16: Limited Warranty
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 defective part.
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