Manuals / Thermo Products / Household Appliance / Furnace

Thermo Products CMA3-50D36N, CMC1-50DV3N, CMC1-50D36N, CMC1-75D36N, CMA3-75D36N, CMC1-75DV3N

Models: CMC1-75DV3N CMA3-75D36N CMA3-50D36N CMC1-75D36N CMC1-50D36N CMC1-50DV3N

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All installations and services must be performed by qualified service personnel.

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Thermo Products CMA3-50D36N, CMC1-50DV3N, CMC1-50D36N, CMC1-75D36N, CMA3-75D36N, CMC1-75DV3N service manual

Contents

WHAT TO DO IF YOU SMELL GAS FOR YOUR SAFETYMODELS CMA3-50D36N, CMA3-75D36N CMC1-50D36N, CMC1-75D36N CMC1-50DV3N, CMC1-75DV3NSECTION TABLE OF CONTENTSI. SAFETY INFORMATION Page Page Page The vent and air intake elbows must be kept away from bushes, shrubs or any vegetation that may restrict the flow of flue products. It must also be kept clear of any leaves, weeds or other combustible materials. Keep the vent hood clear of snow. Avoid locating the terminals in areas where standing water or condensate drippage may be a problem 1.A windows be opened CMA3-50D36 II. FURNACE SPECIFICATIONSDIMENSIONS MODELCMC1-75D36 DIMENSIONSMODEL CMC1-50D36CMC1-75DV3 DIMENSIONSMODEL CMC1-50DV3INSTALLATION PARTS PACKAGES Page COMBUSTIBLE MATERIAL.” COMBUSTIBLE MATERIAL NON-COMBUSTIBLEMATERIALMODELS CMA3/CMC1 IV. GENERAL INSTALLATION A.FURNACE LOCATION Combustible Floor Base Model 70-BASEFor CMA3 models only Figure 1A Cottage Base Model 01COT-BASE Coil Cabinet Model CE113S / CE213TCE113S Figure 1BFigure Figure B. BASE INSTALLATION - CMA3 models onlyPage Figure D.CLOSET INSTALLATION C.ALCOVE INSTALLATIONCMC1 SERIES CMA3 SERIESE. FUEL PIPING F.GENERAL VENTING REQUIREMENTS MAXIMUM VENT LENGTH Page Figure 6A H. Direct Venting Through a Sidewall 1. Vent And Combustion Air Pipes2. Exhaust Vent Termination Elbow Sidewall Venting Page 4. Vent Terminal Location Guidelines Terminations Figure Figure The furnace may be vented vertically through the roof. The outlet/inlet of the vent and air intake terminations shall be a minimum of 12 inches above highest anticipated snow level. The vent outlet must be installed a minimum of 12 in. above the air intake inlet. The combustion air intake shall be installed upwind of the vent outlet when exposed to prevailing winds.The exhaust vent and combustion air intake can be a minimum of 3 in. and a max. of 24 in. apart see Figures 11 & 12. When installing dual 2” PVC pipes and the 2” flashing plates AOPS7484 on pitched roof, slope adapter may be used to simplify installationFigure K. CONDENSATE DRAIN LINE AND TRAP ASSEMBLY 1. Electrical Branch Supply Circuit L.ELECTRICAL WIRING2.Connection Of Power Supply Wires 3. Connection Of Room Thermostat WiresMaximum Recommended Thermostat Wire Length Feet Electrical Wire Diameter AWG4. BLOWER MOTOR SPEED WIRING Figure Pressure CMA3-50D36Speed Tap \ StaticCMA3-75D36 Pressure CMC1-50D36Speed Tap \ StaticCMC1-75D36 Pressure CMC1-50DV3Speed Tap \ StaticCMC1-75DV3 5. FIELD WIRING AND REPLACING WIRING V.STARTING THE UNIT A. SEQUENCE OF OPERATIONS MAIN BURNER OPERATION CALL FOR HEAT SATISFIED OPERATING INSTRUCTIONS B.INITIAL START UPC.ADJUSTMENT OF BTU INPUT RATE D.BURNER ADJUSTMENT GAS PRESSURE CHART FOR CMA*/CMC* MODEL FURNACESE.SETTING TEMPERATURE RISE F.FURNACE CHECKOUT PROCEDURE VII. DEALER MAINTENANCE VI. INSTALLERS INSTRUCTIONS TO USERB.GENERAL INSPECTION 2.CONDENSATE LINE/TRAP ASSEMBLY4. INDUCER BLOWER ASSEMBLY A.ELECTRICALD.HOUSE AIR BLOWER 1.CLEANING THE COIL AIR SIDE5. GASKETS/SEALING MATERIALS C.HEAT EXCHANGERDIAGNOSTIC FEATURES FILTER MAINTENANCE PROCEDUREFILTER REPLACEMENT VIII. TROUBLESHOOTINGThe LED will also flash once at power-up TROUBLESHOOTING GUIDE AT THE INTEGRATED CONTROL? Yes AFTER GAS VALVE OPENS, DO THE BURNERS IGNITE? IS LED LIGHT IF LED LIGHT FLASHES APPENDIX - A REPLACEMENT PARTS Page Page Page APPENDIX - B WIRING DIAGRAMS