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268893-UUM-A-0407

Unitary Products Group

11

SECTION IV: WIRING DIAGRAM

 FIGURE 11:  

Wiring Diagram

Summary of Contents for GY8S

Page 1: ...controls control system parts electrical parts that have been wet or the furnace if deemed necessary FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury d...

Page 2: ...nate outside the space containing the furnace 4 Examine the furnace casing making sure the physical support is sound without sagging cracks or gaps Examine the furnace base making sure it is physicall...

Page 3: ...the control system and any gas control which has been under water Operating Instructions 1 STOP Read the safety information above 2 Set the thermostat to the lowest setting 3 Turn off all electric po...

Page 4: ...ters located in the blower compartment 1 Remove the upper furnace door by lifting up Pull out bottom of door and lower from furnace 2 Remove the blower compartment panel by lifting up 3 The filters wi...

Page 5: ...d a qualified service agency must perform the service FURNACE CLEANING SECTION NOTE The cleaning operations listed below must be performed only by a qualified service agency Burner Removal Cleaning Th...

Page 6: ...mpleted between terminals R and W of the thermostat When the proper amount of combustion air is being provided the pressure switch will close the ignition control pro vides a 17 second warm up period...

Page 7: ...trol is manually reset If it has opened check for proper combustion air proper inducer operation and primary heat exchanger failure or burner problem Be sure to reset the switch and cycle power 24 VAC...

Page 8: ...he LAST ERROR button The LED on the control will then flash the error codes that are in memory starting with the most recent There will be a two second pause between each flash code After the error co...

Page 9: ...MBH 1SR0302 SIDE RETURN FILTER KIT 1 FILTER ALL MODELS 1SR0200 SIDE RETURN FILTER KIT 1 4 FILTER ALL MODELS 1BR0114 BOTTOM RETURN FILTER KIT 1 FILTER 14 1 2 CABINETS 1BR0214 BOTTOM RETURN FILTER KIT...

Page 10: ...KET ROLL OUT SWITCH MISCELLANEOUS 35 FILTER 36 RACK FILTER 37 PLUG HOLE WINDOW CLEAR 875 38 ORIFICE BURNER Natural 45 39 HANDLE DOOR 40 COLLAR FLUE 41 GROMMET 1 2 DIA 42 GASKET RESTRICTOR PLATE 43 TUB...

Page 11: ...268893 UUM A 0407 Unitary Products Group 11 SECTION IV WIRING DIAGRAM FIGURE 11 Wiring Diagram...

Page 12: ...installed in the United States and Canada EXCLUSIONS This warranty does not cover any 1 Shipping labor or material charges 2 Damages resulting from transportation installation or servicing 3 Damages r...

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