Mid Efficiency Gas Furnace Owners Manual
Contents
1. LIMIT PERMANENT AIR FILTERS FINE MESH SIDE TOWARDS FURNACE METAL FLUE CONNECTOR PIPE SLOPES UPWARD 1 4 INCH PER FOOT MINIMUM TO CHIMNEY VENT OR VENT TERMINATION E FILTER RACK TYPICAL MANUAL CAS SHUT OFF PRESSURE SWITCH FLUE PIPE GAS SUPPLY LINE SUPPLY AIR N N MDA SERIES RATING PLATE LABEL All installations and services must be performed by qualified service personnel 15 POSSIBLE HAZARD FROM CHEMICAL VAPORS AWARNING The furnace must have an adequate supply of fresh and clean air for safe combustion If chemical vapors get into the furnace hazardous fumes may result Pay attention to the safety rules below to prevent you and your family from being injured by these hazardous chemical vapors Aerosol spray propellants and volatile compounds cleaners chlorine based chemicals refrigerants and others may be highly flammable They may also create corrosive compounds such as hydrochloric acid when exposed to the furnace combustion products These fumes are hazardous and can also cause the furnace to fail Typical locations and chemicals with potentially corrosive vapors are beauty and barber shops photo processing labs cleaning2. C Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified heating contractor Force or attempted repair may result in a fire or explosion All installations and services must be performed by qualified service personnel B OPERATING INSTRUCTIONS TO START THE FURNACE 1 Please read the safety information in this book before operating furnace 2 Set the thermostat to the lowest setting 3 Turn off all electric power to the appliance 4 This appliance is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand 5 Remove front door 6 Turn the knob on combination gas valve to the full off position 16 MANUAL KNOB POSITION INDICATOR NOTCH Figure 2 7 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you then smell gas STOP Follow Step A in the previous safety information If you don t smell gas go to the next step 8 Turn the knob on combination gas valve to the ON position 9 Replace front door 10 Turn on electric power to the appliance 11 Set thermostat to desired setting 12 If the appliance will not operate follow the instructions To Turn Off Gas To Appliance and call a
3. INSTALLED WITH TYPE B 1 VENT 24 INCHES FOR SERVICE PURPOSES THIS FURNACE REQUIRES A SPECIAL VENTING SYSTEM WHEN IT IS TO BE INSTALLED AS A HORIZONTALLY VENTED CATEGORY FURNACE REFER TO INSTALLATION AND SERVICE MANUAL NO MG 993 FOR PARTS LIST AND METHOD OF INSTALLATION FILTERS MUST BE INSTALLED EXTERNAL THE FURNACE CASING THIS FURNACE MUST BE INSTALLED IN ACCORDANCE WITH THERMO PRODUCTS INSTRUCTIONS AND LOCAL CODES IN ABSENCE OF LOCAL CODES FOLLOW THE NATIONAL FUEL GAS CODE ANSI 2223 1 EFFICIENCY RATING CERTIFIED IN W C INCHES W C P O BOX 217 NORTH JUDSON IN 46366 MODEL Wo FORCED AIR FURNACE FOR INDOOR INSTALLATION IN BUILDING CONSTRUCTED ON SITE a ama CATEGORY 115V 1PH 60CY MAX TOTAL INPUT AMPS INPUT BTU HR GAS NORMAL MANIFOLD PRESSURE INCHES W C MIN GAS SUPPLY PRESSURE FOR INPUT ADJUSTMENT MAX GAS SUPPLY PRESSURE 14 0 INCHES W C AIR TEMPERATURE RISE 55 F TO 85 F MAX EXTERNAL STATIC PRESSURE MAX OUTLET AIR TEMPERATURE F CERTIFIED FOR CLOSET INSTALLATION AT MINIMUM CLEARANCES TO COMBUSTIBLE CONSTRUCTION AS SHOWN TOP FRONT BACK LS RS FLUE PIPE INCHES 1 6 0 0 6 FOR INSTALLATION ON COMBUSTIBLE FLOORING CLEARANCE TO FLUE MAY BE 1 INCH WHEN INSTALLED WITH TYPE B 1 VENT 24 INCHES FOR SERVICE PURPOSES THIS FURNACE REQUIRES A SPECIAL VENTING SYSTEM WHEN IT IS TO BE INSTALLED AS A HORIZONTALLY VENTED CATEGORY FURNACE REFER TO INSTALLA
4. qualified heating contractor or gas supplier All installations and services must be performed by qualified service personnel C SHUTDOWN PROCEDURE TO TURN OFF GAS TO FURNACE 1 Set the thermostat to lowest setting 2 Turn off the electric power to the appliance if service is to be performed 3 Remove front door 4 Turn the knob on the combination valve to the full OFF position 5 Replace front door IV HOMEOWNER USER MAINTENANCE INSTRUCTIONS ROUTINE MAINTENANCE The following maintenance procedures should be performed by the homeowner user during the heating season ANWARNING Homeowners attempting service other than covered as homeowner user maintenance may cause conditions which could result in personal injury or property damage ANWARNING To avoid injury from moving parts and to avoid electrical shock shut off power to the furnace before removing the blower compartment door A ANNUAL INSPECTION The homeowner must have this furnace professionally inspected at the beginning of each heating season by a qualified heating contractor to ensure proper operation Instructions for the dealer maintenance needed for this furnace can be found in the Installation and Service Manual NOTICE This furnace has been shipped from the factory with a permanently lubricated circulating air blower motor Any maintenance to this blower motor is to be performed only by a qualified service agency B FILTER MAINTENANCE PROCEDUR
5. AFETY PRECAUTIONS BELOW AND IN THIS MANUAL A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE PERSONAL INJURY OR LOSS OF LIFE ANWARNING Property damage personal injury or loss of life could result from repair or service of this furnace by anyone other than a qualified heating contractor Only the routine maintenance described in this manual may be performed by the user ANWARNING This furnace operates by burning gas inside your home This creates the possibility of fire or an explosion which could result in serious injury or death You must read and follow all of these safety precautions to help ensure safe operation of your furnace and to prevent a life threatening fire or explosion from ever occurring AAWARNING To avoid injury from moving parts and to avoid electrical shock shut off power to the furnace before removing the blower compartment door A WARNING Do not block or obstruct air openings on the furnace or air openings communicating with the area in which the furnace is installed AWARNING If you suspect there is a problem with the furnace its venting system or any other related problem immediately contact a qualified service agency AWARNING In the event your furnace fails to operate do not attempt to put the furnace into operation Contact a qualified heating contractor to service the furnace ANWARNING The furnace must have an adequate supply of fresh and clean air for safe combustion If chemical va
6. E 219 896 2133 MADE IN USA INDEX SECTION L SAFETY INFORMATION IL GENERAL INSTRUCTIONS FURNACE OPERATION A WARNINGS AND OPERATION B OPERATING INSTRUCTIONS C SHUTDOWN PROCEDURE IV HOMEOWNER USER MAINTENANCE INSTRUCTIONS ROUTINE MAINTENANCE A ANNUAL INSPECTION B FILTER MAINTENANCE PROCEDURE C VISUAL INSPECTION PROCEDURE PAGE 10 10 10 12 All installations and services must be performed by qualified service personnel 1 SAFETY INFORMATION This page and the following page contain reproductions of the various instruction and warning labels placed on the Thermo Pride Sectional Gas Furnaces Please read and comply with the contents of these labels FORCED AIR FURNACE FOR INDOOR INSTALLATION IN BUILDING CONSTRUCTED ON SITE ANSI Z21 47a CAN CGA 2 32 1895 CENTRAL FURNACE CATEGORY 115V 1 60CY TOTAL INPUT AMPS INPUT BTU HR NORMAL MANIFOLD PRESSURE INCHES W C MIN GAS SUPPLY PRESSURE FOR INPUT ADJUSTMENT MAX GAS SUPPLY PRESSURE 14 0 INCHES W C AIR TEMPERATURE RISE 55 F TO 85 F MAX EXTERNAL STATIC PRESSURE MAX OUTLET AIR TEMPERATURE F CERTIFIED FOR CLOSET INSTALLATION AT MINIMUM CLEARANCES TO COMBUSTIBLE CONSTRUCTION AS SHOWN TOP FRONT BACK 15 85 FLUE PIPE INCHES 1 6 0 0 6 FOR INSTALLATION ON NON COMBUSTIBLE FLOORS ONLY FOR INSTALLATION ON COMBUSTIBLE FLOORING ONLY WHEN INSTALLED ON SPECIAL BASE PART NO 50CA BASE CLEARANCE TO FLUE MAY BE 1 INCH WHEN
7. E The return air filter provided with this unit is a re usable type filter This filter should be inspected monthly and when dirty cleaned or replaced if necessary to assure proper furnace operation Follow the cleaning removal and replacement procedure below 10 All installations and services must be performed by qualified service personnel NOTE If the furnace is installed in a dusty environment dust levels must be much higher than normal The filter must be inspected daily and cleaned as needed until dusty conditions have been eliminated AWARNING This furnace is not to be used for temporary heating of buildings or structures under construction FILTERS BLOWER FRONT ACCESS DOOR DOOR RSS S9 SX ss Ses ES FILTER S SS SX DEALER TO CUT RETURN MDA SERIES MHA SERIES AIR OPENING Figure 3 MHA FURNACE The filter rack or drop chute will be located between the return air plenum and the return air opening of the furnace See Figure 3 Slide dirty filter out of the filter rack Clean the filter by vacuuming rinsing with tap water hosing or dipping in an ordinary detergent solution Replace the completely dry filter in the rack The mesh side of the filter must be installed towards the furnace after cleaning MDA FURNACE TURN OFF POWER TO FURNACE The filter rack will be located on top of the furnace inside the return air duct using either a V rack or a drop chute similar to on
8. If ice has formed on the terminal itself it should be removed using a blow dryer b The sidewall venting kit SWGII Power Venter manufacturer s instructions to be supplied by Field Controls Use information must be supplied by the installer then read and understood by the user 3 Return Air Duct Connection Check to see if it is 1 physically sound 2 sealed to the furnace casing and 3 terminates outside the space containing the furnace 4 Make sure the furnace is sealed to the base if applicable without sagging cracks or gaps Make sure there are no signs of deterioration of the furnace or base 5 Remove vestibule door and inspect control compartment for signs of damaged or unusually worn wiring condensation sooting or other damage or deterioration 6 Restore power to the furnace Follow the operating instructions to light furnace 7 Make sure the burner flames are in good adjustment See Figure 5 Burner flames should not impinge or fire against the side of the tube opening NOTICE It is not unusual to have orangish flames visible in the tube for LP gas SOLID BLUE FLAME BURNE MANIFOLD Figure 5 AWARNING Call a qualified heating contractor to report suspected deficiencies do not attempt to make repairs yourself 13
9. TICAL NEW FILTERS MANUAL PROVIDED WITH THIS FURNACE FOR DETAILS FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE ANY DEFICIENCIES NOTED MUST BE CORRECTED AT ONCE BY A QUALIFIED HEATING CONTRACTOR DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF BY A QUALIFIED CONTRACTOR ONLY Y DO NOT REMOVE THIS TARE FOR ASSISTANCE OR ADDITIONAL INFORMATION CONSULT A QUALIFIED INSTALLER SERVICE AGENCY OR THE GAS SUPPLIER OPERATING INSTRUCTIONS ARE LOCATED INSIDE APPLIANCE NEAR BURNER ASSEMBLY THIS UNIT MUST BE INSTALLED AND SERVICED 390231 All installations and services must be performed by qualified service personnel Bl ron YOUR SAFETY READ BEFORE OPERATING msc ce s REMOVE THIS PANEL FIRST IN ORDER a fire or explosion may result causing property damage personal injury or loss of life TO REMOVE BLOWER DOOR A This appliance does not have a pilot It is equipped with ignition device which automatically lights the burner Do not try to light the burner by hand INSTALLATION AND USERS MANUALS B BEFORE OPERATING smell all around the applicance area for gas Be sure to smell next to the floor because some gas is ARE LOCATED BEHIND BLOWER DOOR heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS 390289 Do not try to light any appliance Do not touch any electric switch do not u
10. TION AND SERVICE MANUAL NO MG 893 FOR PARTS LIST AND METHOD OF INSTALLATION FILTERS MUST BE INSTALLED EXTERNAL TO THE FURNACE CASING THIS FURNACE MUST BE INSTALLED IN ACCORDANCE WITH THERMO PRODUCTS INSTRUCTIONS AND LOCAL CODES IN ABSENCE OF LOCAL CODES FOLLOW THE NATIONAL FUEL GAS CODE ANSI Z223 1 EFFICIENCY RATING IN W C INCHES W C P O BOX 217 NORTH JUDSON IN 46366 CAUTION MOVING PARTS CAN CAUSE SEVERE PERSONAL INJURY AWARNING FOR YOUR SAFETY SPECIAL HOMEOWNERS INSTRUCTIONS 1 DO NOT TRY TO LIGHT ANY APPLIANCE 2 DO NOT TOUCH ANY ELECTRICAL SWITCH IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE CAN CAUSE SHUT OFF FURNACE BEFORE DO NOT USE ANY PHONE IN YOUR BUILDING PROPERTY DAMAGE PERSONAL INJURY OR LOSS OF LIFE REMOVING THIS PANEL 3 IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR S PHONE FOLLOW THE GAS SUPPLIER S INSTRUCTIONS 4 IF YOU CANNOT REACH YOUR GAS SUPPLIER CALL THE FIRE DEPARTMENT FILTER MAINTENANCE WHEN IT BECOMES e FOR SAFE OPERATION IS THE RESPONSIBILITY OF THE OWNER AND OR USER THAT THE BURNER CHIMNEY VENT NECESSARY REPLACE OR WASH PIPE HEAT EXCHANGER AND CONTROLS SHOULD BE INSPECTED EVERY YEAR BY A QUALIFIED HEATING CONTRACTOR FILTER REMOVE THE DIRTY FILTER FROM THE RACKS PROVIDED AND WASH OR THE OWNER AND OR USER SHOULD ALSO CONDUCT PERIODIC VISUAL INSPECTIONS REFER TO THE USERS INFORMATION REPLACE WITH IDEN
11. Thermo Pride INDUCED DRAFT HIGHBOY AND COUNTERFLOW HORIZONTAL GAS FURNACE USERS INFORMATION MANUAL MODELS FOR USE WITH NATURAL GAS MHA 50N MHA 75N MHA 100N MHA 125N MDA S50N MDA 75N MDA 100N MDA 125N FOR USE WITH L P GAS PROPANE MHA 50P MHA 75P MHA 100P MHA 125P MDA 50P MDA 75P MDA 100P MDA 125P AWARNING IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW AND IN THIS MANUAL A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE PERSONAL INJURY OR LOSS OF LIFE DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE WHAT TO DO IF YOU SMELL GAS DO NOT TRY TO LIGHT ANY APPLIANCE DO NOT TOUCH ANY ELECTRICAL SWITCH DO NOT USE ANY PHONE IN YOUR BUILDING LEAVE THE BUILDING IMMEDIATELY IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR S PHONE FOLLOW THE GAS SUPPLIER S INSTRUCTIONS e IF YOU CANNOT REACH YOUR GAS SUPPLIER CALL THE FIRE DEPARTMENT INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER SERVICE AGENCY OR THE GAS SUPPLIER REFERRED TO IN THESE INSTRUCTIONS AS A QUALIFIED HEATING CONTRACTOR PLEASE READ THESE INSTRUCTIONS PRIOR TO INITIAL FIRING OPERATING THE FURNACE AND BEFORE PERFORMING ANY MAINTENANCE THESE INSTRUCTIONS MUST BE LEFT WITH THE HOMEOWNER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY THE HOMEOWNER USER THERMO PRODUCTS LLC BOX 217 MG 994 NORTH JUDSON IN 46366 ECN 4199 MI 05 00 PHON
12. e All installations and services must be performed by qualified service personnel WALL METAL FLUE CONNECTOR PIPE SLOPES UPWARD 1 4 INCH PER FOOT MINIMUM TO CHIMNEY VENT OR VENT TERMINATION 1 pa FUE PIPE LIMIT PRESSURE SWITCH SUPPLY AIR TYPICAL MANUAL GAS SHUT OFF GAS SUPPLY LINE RATING PLATE LABEL L COMBINATION GAS VALVE of H H TYPICAL FILTER h LOCATION PERMANENT AIR FILTER FINE MESH SIDE TOWARDS FURNACE L RETURN AIR DUCT SEALED AIR TIGHT TO FILTER TYPICAL ELECTRICAL POWER SHUT OFF LOCATION Figure 1 COMBINATION GAS VALVE RACK MHA SERIES aa TYPICAL ELECTRICAL POWER SHUT OFF LOCATION HOUSE BLOWER MOTOR INTEGRATED CONTROL N RETURN AIR mr DUCT INTEGRATED CONTROL 6 HOUSE BLOWER MOTOR
13. e shown for the MHA in Figure 3 To change filter with a front load type drop chute follow the instructions for MHA To change filters using the V rack remove the furnace front door and remove the filters through the blower opening or in the event access slots are provided in the plenum pull the filters directly out through these slots Clean filters by vacuuming tap water rinsing hosing or dipping in an ordinary detergent solution After cleaning replace completely dry filter mesh side down on the filter rack on the top of the furnace Replace front door Turn on power to furnace 11 All installations and services must be performed by qualified service personnel FILTER REPLACEMENT See Table 1 for minimum heating filter areas required for the different types of filters available should the filter used require replacement If the unit is equipped with cooling contact your installer or a qualified service person to determine the minimum filter area required for the different filter types and your cooling system MINIMUM FILTER AREA REQUIRED LENGTH X WIDTH SQ IN FILTER TYPE MAXIMUM RATE AIR VELOCITY FURNACE MODEL E MHAMDAS0 MHA MDA75 MHA MDA100 MHA MDA125 THERMO PRODUCTS 600 172 IN 254 IN 328 IN 402 IN SUPPLIED PERMANENT FILTER PERMANENT FILTER FILTER TABLE 1 The Thermo Products supplied filter can be cut to size to fit other filter retention systems as long as the minimum s
14. establishments laundries and dry cleaners liquid and powdered bleaches swimming pool chemicals cleaning solvents refrigerator and air conditioning refrigerants calcium and sodium chloride waxes and process chemicals All of the above materials are corrosive at very low concentration levels with little or no odor to reveal their presence Do not store these chemicals near the furnace If operation in this type of area is necessary a qualified heating contractor must be contacted to install a means of providing uncontaminated combustion air from outside sources FURNACE OPERATION A WARNINGS BEFORE OPERATION FOR YOUR SAFETY READ BEFORE OPERATING AWARNING If you do not follow these instructions exactly fire or explosion may result causing property damage personal injury or loss of life A This appliance does not have a pilot It is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand B BEFORE OPERATING smell all around the appliance area for gas Be sure to smell next to the floor because some gases are heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from your neighbor s phone Follow the gas suppliers instructions If you cannot reach your gas supplier call the fire department
15. furnace should be inspected annually by a qualified heating contractor 9 Do not use this furnace if any part has been under water Immediately call a qualified heating contractor to inspect the furnace and to replace any part of the control system and any gas control which has been under water 10 Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the furnace before shutting off the electrical supply AWARNING If you suspect there is a problem with the furnace its venting system or any other related problem immediately contact a qualified service agency 11 Check carefully for gas before lighting a furnace Some gas is heavier than air and may settle near the ground Search for gas odor by sniffing at ground level in the area of the furnace 12 Figure 1 illustrates a typical furnace installation and the typical position of the components referenced in these instructions 13 Your furnace should be described by the model number and serial number when contacting a qualified heating contractor This important information is located on the rating plate behind the front door See Figure 1 14 This furnace is equipped with a safety feature which will not allow the furnace to be operated if the outlet vent to the appliance is blocked AWARNING In the event your furnace fails to operate do not attempt to put the furnace into operation Contact a qualified heating contractor to service the furnac
16. ize requirement is met NOTICE Any internal stiffeners used in the filter must not be removed although they can be cut to size as needed C VISUAL INSPECTION PROCEDURE It is recommended that the homeowner user conduct the following periodic visual inspection of the furnace at the start of the heating season and monthly during the heating season AWARNING CALL A QUALIFIED HEATING CONTRACTOR TO REPORT SUSPECTED DEFICIENCIES DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF 1 Turn off power to furnace 2 Flue Pipe Connection amp Chimney Visually check flue pipe and chimney for tightness blockage and corrosion If fittings are loose or if blockage or corrosion is suspected to be a problem contact a qualified heating contractor Make sure horizontal runs of the flue have an upward slope away from furnace of 1 4 per foot minimum and are physically sound without holes cracks or signs of corrosion There should be no sign of moisture or vent gas leakage at any vent connection 12 All installations and services must be performed by qualified service personnel ADDITIONAL REQUIREMENTS OF FURNACES VENTED THROUGH THE SIDE OF THE HOUSE WITH NO CHIMNEY a Such horizontally vented furnaces should also be inspected to make sure that all vent joints are sealed and that the outside vent terminal is clear and free of obstruction by ice snow or debris Any obstruction of the terminal should be carefully removed without damaging the vent terminal
17. m all combustible materials such as clothing paper cardboard wood cleaning materials or flammable liquids to prevent them from igniting 5 For safe and proper operation the furnace needs air for combustion and ventilation A WARNING Do not block or obstruct air openings on the furnace or air openings communicating with the area in which the furnace is installed Do not operate this furnace without provisions for an adequate combustion air supply Keep all insulation materials at least twelve inches away from all burner openings Do not block or cover any openings which supply combustion and ventilation air to the furnace Follow all instructions in this manual for providing ample combustion and ventilation air All installations and services must be performed by qualified service personnel IMPORTANT For sidewall vented furnaces do not allow the outside vent terminal to be blocked or obstructed by vegetation ice snow or any other materials 6 Should this unit be installed in an attic or other insulated area or if the area is insulated after the furnace is installed the furnace area must be examined and kept free and clear of the insulating material and any fibers that may have come loose Remember some insulating materials are combustible 7 No attempt should be made to restart the unit in the event that the gas to the main burner has been shut off Contact a qualified heating contractor before restarting the furnace 8 The
18. m repair or service of this furnace by anyone other than a qualified heating contractor Only the routine maintenance described in this manual may be performed by the user 2 ANWARNING This furnace operates by burning gas inside your home This creates the possibility of fire or an explosion which could result in serious injury or death You must read and follow all of these safety precautions to help ensure safe operation of your furnace and to prevent a life threatening fire or explosion from ever occurring 3 POSSIBILITY OF BURNS CUTS OR ELECTRICAL INJURY AAWARNING To avoid injury from moving parts and to avoid electrical shock shut off power to the furnace before removing the blower compartment door Do not perform any maintenance on the furnace while it is operating Read and follow the maintenance instructions provided with this furnace before beginning any maintenance work Care must be taken whenever the doors are removed from this appliance This may expose sharp edges or points which could cause cuts hot surfaces which could cause burns and electrical circuits which could cause shocks Instruct children on the safety hazards associated with furnaces Keep children away from the furnace at all times 4 Keep furnace free and clear of combustible materials gasoline and other flammable liquids and vapors Do not store combustible materials near the furnace The furnace must have adequate clearances fro
19. n 8 Turn on all electric power to unit ORIZONTAL APPLICATION OF HE MDA SERIES UNITS THA HE ROLLOUT WITCH BE RELOCATED EFER INSTALLATION AND E or VICE INSI CTIONS 5 5 99 LO 225 9 Set thermostat to desired setting 10 If appliance will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier WIL Se Om HORIZONTAL APPLICATION MANUAL KNOB THE MDA SERIES UNITS MAY POSITION INDICATOR NOTCH RE QUIRE H E AUX LIMIT SWITCH BE RELOCATED TURN OFF GAS TO APPLIANCE 1 Set thermostat to lowest setting RE E B ALLAT ION A D 2 Turn off all electric power to the appliance if service SE RVICE 5 R 5 ONS is to be performed 3 Turn knob clockwise w to OFF position 6 993 LO 226 390434 All installations and services must be performed by qualified service personnel The following warnings and cautions are found throughout the Thermo Pride Sectional Gas Furnace Manual Please read and comply with the statements below ANWARNING IF YOU DO NOT FOLLOW THE S
20. pors get into the furnace hazardous fumes may result Pay attention to the safety rules below to prevent you and your family from being injured by these hazardous chemical vapors AWARNING If you do not follow these instructions exactly fire or explosion may result causing property damage personal injury or loss of life AWARNING Homeowners attempting service other than covered as homeowner user maintenance may cause conditions which could result in personal injury or property damage All installations and services must be performed by qualified service personnel AWARNING Shut off the power to the furnace before removing blower compartment door to avoid injury from moving parts AWARNING This furnace is not to be used for temporary heating of buildings or structures under construction AWARNING CALL A QUALIFIED HEATING CONTRACTOR TO REPORT SUSPECTED DEFICIENCIES DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF ANWARNING Failure to keep the condensate trap filled may allow flue gases to enter the living space NOTE This warning only applies to sidewall venting AWARNING Because of the potential of odorant fade a gas leak may not be detected by smell If this furnace is installed below grade contact your gas supplier for a gas detector All installations and services must be performed by qualified service personnel IL GENERAL INSTRUCTIONS 1 AWARNING Property damage personal injury or loss of life could result fro
21. se any phone in your building mmediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions Supplier es the mre OUTSIDE POWER SOURCE C Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service repair may result L1 HOT AND L2 COMMON D Do not use this appliance if any part has been under water Immediately call a qualified service technician to 590229 inspect the appliance and to replace any part of the control system and any gas control which has been under water oPERATING INSTRUCTIONS BEI CONNECT 115v 60Hz TO STOP Read the safety information above on this label Set the thermostat to lowest setting Turn off all electric power to the appliance This appliance is equipped with an ignition device which ME AER the burner Do not try to light THIS COMP AR M E MUST BE 5 Turn gos control knob clockwise CN to OFF position CLOSED EXCEPT WHEN SERVICING Es NL 6 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to next step 7 Turn gas control knob counterclockwise to ON positio
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