Lennox B050A3B Page 25 Installation/Servicing Instructions And Users Information Manual Download | Manualshive

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506307-01

Page 25 of 36

Issue 1207

WIRING DIAGRAM

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Summary of Contents for B050A3B

Page 1: ...est Columbia SC 29170 SECTION 1 INSTALLATION AND SERVICING INSTRUCTIONS 1 28 Important Safety Information 2 Specification and Installation 3 Start up and Operation 17 Maintenance 21 Sequence of Operat...

Page 2: ...e instructions 6 Always install furnace to operate within the furnace s intended temperature rise range with a duct system whichhasanexternalstaticpressurewithintheallowable range as specified in Temp...

Page 3: ...506307 01 Page 3 of 36 Issue 1207...

Page 4: ...al injury due to electrical shock or uncontrolled gas leakage WARNING When operating the furnace in the heating mode the static pressure and the temperature rise supply air temperature minus return ai...

Page 5: ...506307 01 Page 5 of 36 Issue 1207 FURNACE WIRING SPECIFICATIONS...

Page 6: ...ult the U S National Fuel Gas Code obtainable from the National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 or the American Gas Association 1515 Wilson Boulevard Arlington VA 222...

Page 7: ...e straps around each end of the furnace These straps should be attached to the furnace with sheet metal screws and to the rafters with bolts The furnace may also be suspended by using an angle iron fr...

Page 8: ...o air needed for combustion ventilation in the form of process air must be provided as required for cooling of eqipment or material controlling dew point heating drying oxidation or dilution safety ex...

Page 9: ...ons should be followed when installing the ductwork 1 Install locking type dampers in all branches of the individual ducts to balance out the system Dampers should be adjusted to impose the proper sta...

Page 10: ...ction BTU INPUT FILTER SIZE 50 000 75 000 100 000 125 000 13 X 23 13 X 23 16 1 2 X 26 20 X 23 Table 2 VENTING Venting for the furnace must be to the outside and in accordance with local codes or requi...

Page 11: ...ace must not be vented into a chimney serving a separate appliance designed to burn solid fuel Type II B vent connectors must be used on all installations and it must be sized per the applicable secti...

Page 12: ...t ANSI Z223 1 NFPA 54 National Fuel Gas Code A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings Permit...

Page 13: ...ing system being placed into operation while all other appliances connected to the common venting system are not in operation 1 Seal any unused openings in the venting system 2 Inspect the venting sys...

Page 14: ...223 1 NFPA54 and or CSA B149 1 Natural Gas and Propane Installation Codes If local codes allow the use of a flexible gas appliance connector always use a new listed connector Do not use a connector wh...

Page 15: ...tap in order to test incoming gas pressure and outgoing manifold pressure See Figure 9 FIELD SUPPLIED MAIN MANUAL SHUT OFF VALVE GAS SUPPLY DRIP LEG F0000317 Many soaps used for leak testing are corr...

Page 16: ...valve and begins post purge and blower off delay time Open Limit Any time the limit switch is open the control de energizes the gas valve and runs the indoor blower motor on heat speed and runs the i...

Page 17: ...position 5 Set the thermostat above room temperaturae 6 The ignitior will spark and the main burners will ignite Do not attempt to manually light the burners Failure to follow this warning can lead to...

Page 18: ...If the heating value of the natural gas is 1015 Btu cu and it takes 60 seconds to burn 2 cu ft of gas then Input 1015 Btu cu ft x 1 rev x 2 cu ft rev x 3600 60 sec Input 121 8000 btu hr Burner Orific...

Page 19: ...Prior to any blower adjustment electrical service must be turned OFF This furnace is equipped with a 3 speed direct drive motor to deliver a temperature rise within the range specificed on the rating...

Page 20: ...vent from the combustion blower Place the furnace into operation Gradually cover up the blower outlet the main burners should shut OFF Remvoe the restriction and the unit should relight Replace the v...

Page 21: ...be necessary to use a soft bristly brush to remove dirt and then vacuum 3 Remove the burner opening inlet plate This will expose the burner openings of the primary heat exchangers 4 Vacuum the length...

Page 22: ...nd continue sliding the blower forward until it is out of the unit Replacement 1 Place the blower in the blower opening of the unit and slide the blower back into the unit taking care to clear the top...

Page 23: ...506307 01 Page 23 of 36 Issue 1207 SEQUENCE OF OPERATION DIRECT IGNITION SYSTEM CONTROL...

Page 24: ...till present Combustion blower energized The heat speed circulation air fan will be energized after the selected heat fan on delay System waits for flame signal to disappear then goes to Soft Lockout...

Page 25: ...506307 01 Page 25 of 36 Issue 1207 WIRING DIAGRAM f0000321...

Page 26: ...sion can not be met at the time of completion of installaiton the owner shall have a period of thirty 30 days to comply with the above requirements provided however that during said thirty 30 day peri...

Page 27: ...ollowing requirements shall be satisfied by the manufacturer 1 The identification of each special venting system shall include the listing of either the website phone number or manufacturer s address...

Page 28: ...Page 28 of 36 506307 01 Issue 1207 NOTES...

Page 29: ...eep you warm and comfortable during the winter months It will deliver superb performance with only minimal help from you To keep your operating costs low and to eliminate unnecessary service calls we...

Page 30: ...e to the furnace before shutting off the electrical supply 6 Do not use the furnace if any part has been under water A flood damaged furnace is extremely dangerous Attempts to use the furnace can resu...

Page 31: ...fan switch on the thermostat permits you to do this see Figure M 2 on page 32 With the switch in the ON position the fan will operate continuously AUTO position gives fan operation only when the unit...

Page 32: ...ashlight will be useful for these inspections Make one inspection prior to the beginning of the heating season and another during the middle Should you observe unusual amounts of any of the following...

Page 33: ...r washing Cleanable filters may be replaced with disposable filters Refer to Table 1 on page 33 when selecting the proper size and quantity of disposable filter If your air distribution system has a c...

Page 34: ...urnace still does not operate call your dealer for service Lubrication Lubrication of the bearings in the circulating air blower motor and the combustion blower motor is not recommended Burner Flame W...

Page 35: ..._______________ Serial _________________________ Installation Date ____________ Equipment Type ______________________________________ Model _________________________________ Serial ___________________...

Page 36: ...AFFIX THIS INSTRUCTION PACKET ADJACENT TO THE FURNACE HOMEOWNER RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE INSTRUCTIONS D ENTRETIEN ET INSTALLATION ET MANUAL DE L USAGER INSTALLATEUR PLACEZ LA POC...

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