Installation instructions for Plenum-mounted add-on electric heaters Aug.
THESE INSTALLATION INSTRUCTIONS COVER: MODEL T-4 to T-30 (4 Kw to 30 Kw) GENERAL NOTES - Please refer to CSA Standard B139, installation code for oil burning equipment and to the Canadian Electrical Code, Part 1, for recommended installation practices. - The installation of this unit should be in accordance with the regulations of the authorities having jurisdiction. CAUTIONS 1.
FIELD TESTS: A. BEFORE Installation of the Add-on Heater: 1. Ensure that the burner does not cycle due to repeated operation of the furnaces high limit control. 2. Determine whether stabilized outlet air temperature during burner operation is below 66°C (150°F) in the main outlet duct. If it does exceed 66°C (150°F) make the following adjustments to the Ventilation System in progressive steps: Note: In most cases, only steps A & B will be necessary. a) b) c) d) e) f) Note: Check if filters are clogged.
MECHANICAL SECTION A. Product Inspection 1) Inspect the carton and heater and report any damage at once. NEVER INSTALL A DAMAGED HEATER 2) Content of carton: - One Add-on plenum heater - Three (3) sheet metal baffles to adapt heater to plenum. 3) File claim with shipping company if shipment is damaged or incomplete. B.
If a cooling coil is installed in the warm air plenum a minimum distance of 3" or 7" is required between the top of the cooling coil and the add-on heater (depending from which side of the plenum the add-on heater is inserted). (Please see Fig. 4) In both cases, a minimum distance of 2" must be kept between the top of the add-on heater and the elbow, Tee or plenum-end take off of the main supply duct. 1 The heater may be installed on any available side of the plenum.
HE ATER MOUNTING Cut out heater opening at a minimum distance of 6 inches from the furnace. Center the opening on the plenum. Provide slots for insertion if baffles are installed. (Please see Fig. 8). The 6 inch minimum dimension from the top of the furnace to the heater opening in the plenum may be increased. If increased, 14 inch minimum dimensions in Fig. 3 must be increased accordingly. Slip the heater element into the opening.
ELECTRICAL SECTION (ALL MODELS) A. Disconnect all power sources before opening electrical boxes and working within. B. Read the nameplate and markings carefully and consult the wiring diagram before you start wiring. C. Wires and protective equipment should be sized according to the National Electrical Code requirements. D. Use only wires suitable for at least 75°C. E. Disconnect room thermostat connection to furnace and connect to C and W1 terminals of heater. F.
START UP AND SEQUENCE OF OPERATION 1 - The heater is supplied with a built-in 3 position mode selector switch. « » position - Electric heat. « » position - Heating by means of original furnace. « » position - Dual-energy mode. In the "electric" mode the room thermostat will call upon the electric heater to maintain the house temperature at the level desired by the user. In the "oil" mode the oil furnace is ready to respond to the house thermostat's call for heat.
Characteristics Models kW @ 240V T-5 T-9 T-15 T-18 T-20 T-25 T-30 5 9 15 18 20 25 30 Heating Sequences 1 2 4 4 4 4 4 Plenum Heaters 20.8 37.5 62.5 75.0 83.3 104.0 124.
