Installation Instructions
Contents
1. 1 65 42 060080 090 20 21 533 34 1 00 25 1 00 25 1 75 45 036110 110 12 17 432 pees 1 3 0 68 17 0 68 17 048110 110 16 21 533 boas A 1 2 1 00 25 1 00 25 1 65 42 060110 110 20 21 533 N 1 2 01 51 066110 110 66 21 533 ener 3 4 1 00 25 1 00 25 1 75 1 2 01 51 048135 135 16 21 533 pes 1 1 2 1 00 25 1 00 25 060135 135 20 24 610 528 3 4 1 00 25 1 00 25 1 2 01 51 060155 155 20 24 610 3 4 1 00 25 1 00 25 1 2 01 51 Replacement Motor Mounting Band Push steel 5 inserts into a grommets from this z side o a Push grommets into holes from this side 08567 Fig 1 Dimension A Motor Mounting Band Location Un drilled Oiler Boss Mounting Arm Un drilled Oiler Boss Mounting Arm Electrical connectors 3 arm PSC Mount 4 arm PSC Mount ECM Mount 08568 Fig 2 Orientation of Motor Cut off plate lt 2 Blower wheel Blower housing PSC Blower Motor Some models use 4 mounting Capacitor and Strap arms Attach green ground wire here 08569 Fig 3 Expanded View of PSC Blower Assembly Cut off plate _ _ Blower wheel Blower housing ECM blower motor Attach green ground wire here A08570 Fig 4 Expanded View of ECM Blower Assembly Copyright 2008 BDP 7310 W Morris St Indianapolis IN 46231 Printed in U S A Edition Date 11 08 Catalog2. 10 Remove the 2 screws that secure the control assembly to the blower shelf inside the blower compartment Do not discard 11 Move the control aside Secure control assembly aside with a scrap length of wire or tape 12 Using a 5 16 nut driver remove the blower housing mounting screws that secure the blower assembly to the blower shelf 13 Slide the blower assembly forward out of the blower compartment Step 2 Remove Blower Motor 1 Clean blower wheel with a small paintbrush or flux brush Be careful not to dislodge balance clips attached to the blower wheel blades 2 Loosen the setscrew that attaches the blower wheel to the flat on the motor shaft 3 Lay the blower assembly on its side and remove the 3 or 4 screws that secure the motor mounting arms to the blower housing 4 Remove the green ground lead from the side of the blower housing Note the location for re assembly 5 Slide the motor out of the blower wheel hub NOTE If the motor will not slide out of the wheel perform the following steps 6 Set the blower assembly motor side down on a crate or wooden box with a generous amount of padding inside 7 Apply a small amount of lubricant between the shaft of the motor and the hub of the blower wheel 8 Tap the shaft of the motor using a block of wood wooden dowel pin or a 3 4 in 19 mm brass drift pin DO NOT HAMMER DIRECTLY ON THE SHAFT OF THE MOTOR The motor shaft may mushroom and prevent t
3. speed tap selected for heating temperature rise or cooling airflow Improper motor positioning in mounting band Vibration Unit not set flat or level Blower wheel bent or out of balance Flexible duct connectors not used with sheet metal ducts Improper motor positioning in mounting band For additional information and a complete sequence of furnace operation refer to furnace Installation Start Up and Operating Instructions 11 After System Check out is complete set thermostat below room temperature 12 Verify that burner shuts down and blower completes selected off delay furnace time delay Verify furnace operates properly and set thermostat to desired room temperature 13 Re install outer door VARIABLE SPEED PSC MOTOR FURNACE Dimension In mm sar ae ee Casing Wheel Dia x Model Size Model Size Width Width HP 3 Speed 4 Speed 5 Speed HP dimension In mm In mm 024045 045 08 14 356 ane 1 5 0 94 24 1 18 80 036045 045 12 14 356 1 3 0 68 17 0 68 17 1 88 48 024070 070 08 14 356 ae 1 5 0 94 24 1 18 30 036070 070 12 14 356 1 3 0 68 17 0 68 17 1 88 48 1 2 97 25 048070 070 16 17 432 7 1 2 1 00 25 1 00 25 1 65 42 042090 090 14 17 432 18 068 17 0 68 17 048090 090 16 17 432 1 2 97 25 048090 090 16 21 533 1 2 1 00 25 1 00 25
4. 327752 401 327753 401 327754 401 Torsion Flex Motor Mount for PSC Motors and Rigid Mount for ECM Motors Replacement Kit Installation Instructions NOTE Read the entire instruction manual before starting the installation SAFETY CONSIDERATIONS Improper gt installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause death personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow all safety codes Wear safety glasses protective clothing and work gloves Have a fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions include in literature and attached to the unit Consult local building codes the current editions of the National Fuel Gas Code NFGC NFPA 54 ANSI 72231 and the National Electrical Code NEC NFPA 70 In Canada refer to the current editions of the National Standards of Canada CAN CSA B149 1 and 2 Natural Gas and Propane Installation Codes and Canadian Electrical Code CSA C22 1 Recognize safety information This is the safety alert symbol When you see this symbol on unit and i
5. No 327752 01 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces 310 45 11 58ST 10SI 6
6. ectors centered between two of the mounting arms See Fig 2 Recheck alignment from Step 2 and torque mounting band bolt and nut to a minimum of 80 165 Step 4 Assemble the Blower 1 Insert blower motor shaft into hub of blower wheel 2 Check to see the blower wheel is not jammed against the blower housing before installing motor mounting screws 3 Align the motor mounting arms as shown in Fig 1 See Table 1 for the correct Dimension A as shown in Fig 1 PSC motors are properly positioned if the undrilled oiler boss is pointing toward the rear of the blower housing See Fig 2 ECM motors are properly positioned if the connectors on the motor modules are pointing away from the blower discharge air opening See Fig 2 NOTE See Fig 3 and Fig 4 for additional blower assembly information 4 Install blower motor mounting screws in previously used holes in blower housing Torque to 30 to 50 in lbs Do not over tighten NOTE Over tightening screws on mounting legs may result in stripped out screw holes If a screw hole is stripped remove all screws and rotate the mounting band to the next set of screw holes provided in the blower assembly 5 Attach the green ground wire from the motor to the sheet metal of the blower housing on furnaces with PSC motors ECM motors are grounded through the 5 pin connector harness in the same location WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning c
7. he motor from being removed from the wheel You may also use a commercially available tool that clamps on the blower wheel hub and pushes the motor shaft out of the wheel When the motor drops into the box or crate remove it from the box and set it aside CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result improper unit functioning The blower wheel should not be dropped as balance will be affected Step 3 Assemble the Replacement Motor Mount and Motor 1 Verify that the grommets and inserts if used are inserted in the mounting legs correctly per Fig 1 2 Place the motor mount around the mid section of the motor Position the motor around the mid section of the motor as shown in Fig 1 NOTE Failure to correctly position the motor may result in unwanted noise or vibration in the blower assembly 3 Slightly tighten the hex nut and bolt to allow the motor mount to slide up and down the shell of the motor 4 Rotate the motor in the band for correct alignment For 3 arm PSC Motors With one mounting leg positioned at 12 o clock rotate the motor so that the GE logo on the undrilled oiler boss on the end of the motor is positioned slightly to the left 5 degrees of the mounting leg See Fig 2 For 4 arm PSC Motors Position GE logo on the undrilled oiler boss on the end of the motor centered between two of the mounting arms See Fig 2 For ECM Motors Position control and power conn
8. n condensing 33 3 in 868 mm high mid efficiency hot surface igniter furnaces DESCRIPTION AND USAGE These kits can be utilized to replace a blower motor with an approved service replacement motor instead of using the original factory motor with the mounting arms directly attached to the motor This kit contains the following items See Table 1 Table 1 Kit Contents Kit No 327752 401 Qty 3 arm Torsion Flex Mount PSC Self locking 4 20 hex nut 74 20 x 1 7 38 mm long hex bolt Rubber grommets w steel inserts a a oa Instruction sheet Kit No 327753 401 Qty 4 arm Torsion Flex Mount PSC Self locking 4 20 hex nut Ya 20 x 1 12 38 mm long hex bolt Rubber grommets w steel inserts pf a a a Instruction sheet Kit No 327754 401 Qty 4 arm Rigid Mount ECM Self locking 4 20 hex nut Ya 20 x 1 12 38 mm long hex bolt A a a a Rubber grommets Instruction sheet 1 A replacement motor capacitor or ECM module is NOT included in this kit and must be ordered separately if needed INSTALLATION Step 1 Remove the Existing Blower Assembly 1 Turn off electric supplies to unit and thermostat More than 1 disconnect may be required to disconnect power to unit 2 Remove exterior door by loosening knurled knob on door and pulling forward 3 Turn off gas at external supply shutoff and turn elect
9. n instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation 4 WARNING FIRE EXPLOSION ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before installing or servicing unit always turn off all gas and electrical supplies to unit There may be more than one disconnect switch Turn off accessory heater power if applicable 4 WARNING FIRE EXPLOSION ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury death or property damage The ability to properly perform service on this equipment requires certain expertise mechanical skills tools and equipment If you do not possess these do not attempt to perform any service on this equipment other than those procedures recommended in the User s Manual INTRODUCTION This instruction covers installation of replacement torsion flex motor mount or rigid motor mount on no
10. ould result in personal injury or death The furnace must be grounded to minimize personal injury if an electrical short should occur 6 Center the blower wheel in the opening of the blower housing Align the set screw on the flat portion of the blower shaft Torque set screw to a minimum of 140 in lbs to a maximum of 160 in Ibs Step 5 Install Blower Assembly in Furnace 1 Insert the flanges of the blower housing into the rail of the furnace blower deck 2 Slide the blower assembly into the furnace until it is fully seated in the blower compartment 3 Install the 5 16 screws to blower deck in the furnace through the opening in the flange on the blower housing 4 Tighten the screws with a 5 16 nut driver 5 Install the control assembly to the front of the blower shelf of the furnace 6 Connect the electrical leads to the terminals on the control assembly If wires were not marked during disassembly refer to the wiring label on the blower access door On ECM models plug 5 pin and 16 pin connectors into the motor module Both connectors are indexed for correct orientation 7 Install the wiring harness in the recess of the front edge of the heat exchanger cell panel 8 Secure the wiring harness by installing the blower door switch bracket to the front edge of the heat exchanger cell panel Use caution when installing the switch to prevent wires from being pinched 9 Spin blower wheel by hand to verif
11. ric switch on gas control OFF CAUTION CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling parts and servicing furnaces 4 On downflow or horizontal positions where the vent connector passes in front of the blower access panel disconnect and remove vent connector from vent elbow NOTE Support vent connector with temporary metal strap to prevent damage to vent connector or vent connector elbows 5 Remove the 2 screws that secure the blower access door and set door aside 6 Remove the screw that secures the blower door switch to the front edge of the heat exchanger cell panel Do not disconnect blower door switch wires 7 Remove the wiring harness from the recess in the blower shelf 8 Remove the blower leads that connect the motor to the furnace control board and capacitor CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in improper unit functioning Mark wires prior to disassembly to aid re assembly Wiring errors could result in improper or dangerous operation Note Pull motor lead terminals straight out of control connectors instead of pulling on wires to prevent damage to the relay terminal on top of the control relays 9 On some Variable Speed ECM furnace models disconnect the wires from the motor
12. y that wheel does not rub against housing Step 6 System Check Out 1 Set thermostat to OFF Manually close blower door switch Initiate component test through circuit board by referring to Component Test on status code label on blower access door for complete test sequence information 2 If any status codes are flashed refer to status code label on unit blower door 3 Release the blower door switch 4 Install blower access panel on furnace and secure with the 2 existing screws 5 Turn thermostat fan switch to ON to initiate a call for continuous fan operation 6 Verify that the blower wheel does not rub against the housing 7 On Downflow or Horizontal models install the vent connector if the connector was removed Verify that no other connectors or joints were damaged during disassembly 8 Turn gas ON at external shut off and at electric switch on gas valve 9 Set thermostat to call for heat 10 Allow unit to initiate a complete call for heat cycle NOTE Blower motor failure may have been caused by one or more of the following conditions As part of the system check out verify that the following conditions are not affecting the operation of the furnace High external static pressure Dirty filter or high pressure drop filter Undersized filter grills Restricted or undersized duct systems Dirty evaporator coil Noise High air flow due to high external static pressure Incorrect
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