OWNER'S MANUAL ELECTRIC FURNACE INS-SFE-1122 SFE SFEX SFECM THANK YOU FOR YOUR PURCHASE! NEED ASSISTANCE? CONTACT STELPRO CUSTOMER SERVICE. WWW.STELPRO.COM CONTACT@STELPRO.
IMPORTANT INSTRUCTIONS TAKE A FEW MINUTES TO READ THE FURNACE’S INSTALLATION GUIDE TO ENSURE AN EASY AND SAFE INSTALLATION. WARNING 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). If these instructions are not followed, the warranty will be considered null and void and the manufacturer deems no further responsibility for this product. 13. Never block air vents.
INSTALLING THE FURNACE 1 FURNACE LOCATION The electric furnace is available in several models with various heating capacities (from 10 to 30 kW). All these models adapt easily to many applications and are suitable for horizontal, upflow and downflow operations (see the figures below). When installed in vertical downflow position, use only an ‘‘L’’ or ‘‘T’’ shaped plenum without openings or registers directly below the unit.
3 DUCTS AND FILTERS Ducts must be designed to deliver the correct airflow at the specified external static pressure . You should insulate the ducts crossing non-heated areas. Moreover, use flexible return and supply connectors in order to avoid vibrations as much as possible. To make your furnace even quieter, follow these instructions: 1. Cover the vertical return and supply ducts with soundproofing material; 2. Install at most one or two elbows between registers and the return and supply connectors; 3.
ELECTRICAL CONNECTIONS WARNING: 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. 1 TURNING OFF THE POWER SUPPLY To protect yourself against the risk of electric shock, disconnect the power supply to the cables at the electrical panel.
3 ELECTRICAL CONNECTION OF THE THERMOSTAT 1. Install the thermostat according to the manufacturer's recommendations. 3. Seal the wall openings in order to minimize 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. 2. Do not install the thermostat in a location where temperature measurements could be altered.
OPERATION CONTROL PANEL 1 2 3 4 5 6 7 THERMOSTAT HIGH/HAUTE ECO MAX LOW/BASSE STANDARD MIN SFE-SFEX-SFECM MODES CONTINUOUS VENTILATION button MODE button CONTINUOUS HEATING button Allows the selection of the speed continuous ventilation mode (p.8) or the installation type (A) Allows the selection of the Standard or Eco mode (p.10) or the installation type (B "O") Allows the selection of the continuous heating mode (p.8) or the installation type (B "B") LED LEGEND 1.
TWO-STAGE THERMOSTAT one by one (100% heating). The plenum temperature is still limited by the potentiometer of the control card. The control card of the furnace auto-detects the two stages of the thermostat. W1 The thermostat closes the R-W1 circuit, which activates the first stage of the heating sequence (±50% heating). The blower starts up 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.
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. Once again, when the R-Y terminals are activated, the blower starts-up at high speed.
OPERATING LOGIC TABLE WITH A THERMOSTAT CONNECTION – INPUT FUNCTION TYPE FAN ONLY ALL HEATING ALL A COMPENSATION (HEAT PUMP/AIR CONDITIONING) B SINGLETWO-STAGE VENTILATION STAGE THERMOSTAT THERMOSTAT FURNACE – OUTLET COMPRESSOR HEAT PUMP REVERSING VALVE HEATING TEMPERATURE LIMIT IN THE PLENUM FAN SPEED** PRIORITY – G W1 W1 W2 Y1 OR Y2* O/B % °C/°F 1 0 0 0 0 x 0 none low x 1 – – 0 x 100 adjustable medium – x – 1 0 0 x 50 adjustable low – x – x 1 0 x
PLENUM TEMPERATURE ADJUSTMENT IN HEATING MODE AIRFLOW CHANGES FOR THE SFE MODEL Adjusting the output temperature when the thermostat is controlled by a W command. The blower speeds can be modified by changing the connection of the three motor relays.
AIRFLOW TABLE (SFEX) 1/3 HP MOTOR LOW MEDIUM POWER CONTINUOUS HEATING MODE POWER ESP HIGH KW IWC CFM Δ T (°F) CFM Δ T (°F) CFM Δ T (°F) MIN (KW) MAX (KW) 10 0.2 700 45 950 33 1025 31 2.5 2.5 15 0.2 775 61 1150 41 1325 36 2.5 5 17.5 0.2 775 71 1150 48 1325 42 2.5 5 20 0.2 775 82 1150 55 1325 48 2.5 5 22.5 0.2 775 92 1150 62 1325 54 2.5 5 10 0.5 575 55 875 36 900 35 2.5 2.5 15 0.5 630 75 1000 47 1225 39 2.5 5 17.5 0.
AIRFLOW SETTINGS TABLE (SFECM) CONTINUOUS VENTILATION CONT. VENT. LOW HEATING VENTILATION W VENT. HIGH AIR CONDITIONING FLOW RATE Y1* VENT.
MAINTENANCE AND TROUBLESHOOTING AIR FILTER N.B. In order for the warranty to be valid, the unit must be cleaned regularly. Excessive dust or dirt accumulation can block the airflow, forcing the unit to work harder to maintain the desired temperature. Therefore, it uses more energy and increases heating costs. Cut off power supply at circuit breaker/fuse before cleaning the unit. Use a soft rag for dusting. When cleaning, use only a damp rag and non-abrasive dish soap.
The following table lists the most common problems and alerts you may encounter with your unit heater. If your issue isn’t listed in this table or if the proposed solution does not solve the problem, please turn off the unit and contact our customer service team. WWW.STELPRO.COM CONTACT@STELPRO.
STELPRO LIMITED WARRANTY This limited warranty is offered by STELPRO Design Inc. (“STELPRO”) and applies to the following product made by STELPRO: models SFE, SFEX, SFECM.
