INSTALLATION AND USER MANUAL A AD R I Q UÉ N FB0003 IN CANA FA B ® DE DA MA ECM SERIES ELECTRIC FURNACE A AU C MODELS: 21ECM10, 21ECM15, 21ECM18, 21ECM20 AND 21ECM23 IMPORTANT: READ AND SAVE THESE INSTRUCTIONS. Broan-NuTone Canada Inc.; Mississauga, Ontario www.broan.
! WARNING • Never tamper with the unit or its controls. User MUST contact a specialized contractor when a failure occurs. DO NOT ATTEMPT to repair. • When using a humidifier make sure not to damage the heating element bank. • We recommend that your unit be inspected by a specialized technician once a year. • Poor maintenance of air filters OR an unbalanced static pressure may result in a performance decrease. • Always use genuine parts for maintenance or service call.
TABLE OF CONTENTS 1. DIMENSIONS .............................................................................................................................................. 3 2. GENERAL REQUIREMENTS AND SPECIFICATIONS ............................................................................... 4 3. OPERATING OPTIONS ............................................................................................................................... 5 4. BREAKERS ...............................................
2. GENERAL REQUIREMENTS AND SPECIFICATIONS CAUTION This unit must be installed in a dry place, in a non-corrosive, well-ventilated environment, without excessive dust. The ambient temperatue must be over 10°C and under 27°C. If the ambient temperatue is 10°C or less, the plenum must be insulated on 10 ft linear minimum length. 1. LOCATION - The furnace should be centrally located to the heating area. 2. POSITIONS - It can be installed for vertical, horizontal or downflow operation.
3. OPERATING OPTIONS The furnace is shipped from the factory in a “Standard Heating Mode” (all switches are in the Down position). When the thermostat calls for heat, the automatic controls will be activated and the furnace turned “ON”. The blower will run at low speed or higher speed (as selected by SPEED SELECTOR switch).
5. INSTALLATION NOTES 5.1 COLD AIR RETURN The duct can be attached to either side, rear or the bottom of the furnace. For side return there are four 1½” (38 mm) knockouts which can be removed and used as an outline for cutting a 18” x 18” (457 mm x 457 mm) return air opening in the furnace left or right side. Mount the filter frame to the furnace over the opening with the open side of the frame facing front. Then attach the 19” x 19” (483 mm x 483 mm) air duct to the flanges on the filter frame.
. USING OPTIONAL EQUIPMENT 7.1 TWO-STAGE OR OUTDOOR THERMOSTAT (The HEAT ACTIVATION switch must be in the SLOW position). Follow the directions supplied with the two-stage or outdoor thermostat in conjunction with the furnace wiring diagram. 7.2 AIR CONDITIONING THERMOSTAT Your furnace is equipped with all the controls required for the addition of air conditioning (except the heat-cool thermostat). The evaporator coil may be installed by a local contractor in sheet metal plenum of his own manufacture.
. WIRING DIAGRAMS ! WARNING Risk of electric shock. Disconnect power before installation, servicing, maintenance or field wiring. Replace all panels before operating. Failure to do so can result in electric shock causing severe injuries or death. 21ECM10 Model Open: 93.
8. WIRING DIAGRAMS (CONT’D) ! WARNING Risk of electric shock. Disconnect power before installation, servicing, maintenance or field wiring. Replace all panels before operating. Failure to do so can result in electric shock causing severe injuries or death. 21ECM18 & 21ECM20 Models Open: 93.
9. SERVICE PARTS 8 7 6 5 4 3 2 1 19 20 17 18 9 16 13 10 14 15 11 12 FL0019 REPLACEMENT PARTS REPLACEMENT PARTS KEY NO. PART NO. KEY NO. PART NO.
10. MAINTENANCE MOTOR: The motor is lubricated for life and needs no oiling. FILTERS: Size is 20” x 20” x 1” (508 mm x 508 mm x 25 mm). Should be inspected and replaced when dirty. Ordinarily replacement is required twice per heating season and, perhaps, a third time if continuous blower operation is used. NOTE: Each element has an automatic reset thermal cut-out which is set to open at 160°F (71°C). If it opens, the element will be de-energized until the cut-out resets itself.
. WARRANTY SIXTY-MONTH LIMITED WARRANTY FOR NORTRON PRODUCTS Broan-NuTone Canada (Broan-NuTone) warrants to the original consumer purchaser of Notron products that such products will be free from defects in materials or workmanship for a period of sixty (60) months from the date of original purchase. THERE ARE NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
