3
IMPORTANT SAFETY INFORMATION
INSTALLER: Please read all instructions before servicing
this equipment. Pay attention to all safety warnings and
any other special notes highlighted in the manual. Safety
markings are used frequently throughout this manual to
designate a degree or level of seriousness and should not
be ignored. WARNING - Indicates a potentially hazardous
situation that if not avoided, could result in personal injury
or death.
CAUTION - Indicates a potentially hazardous
situation that if not avoided, may result in minor or moderate
injury or property damage.
WARNING:
WARNING:
WARNING:
WARNING:
• Tominimizeequipmentfailureorpersonalinjury,itis
essential that only qualified individuals install, service,
or maintain this equipment. If you do not posses
mechanical skills or tools, call your local dealer for
assistance.
FIGURES & TABLES ......................................................32
Figure 31. GDD92A & GDD95A Cabinet
Dimensions ..............................................32
Figure 32. GUH92A, GUH95A & GUH95C
Cabinet Dimensions ................................33
Airflow Data ..................................................................34
Table 6. GUH92A Upflow / Horizontal Furnaces .......34
Table 7. GDD92A Downflow Furnaces .....................35
Table 8. GUH95C Upflow / Horizontal Furnaces
(ECM Motor)................................................36
Table 9. GUH95A Upflow / Horizontal Furnaces
(PSC Motor) ................................................38
Table 10. GDD95A Downflow Furnaces ...................39
Electrical Information....................................................40
Figure 33. Wiring Diagram ........................................40
Figure 34. Wiring Diagram (Fixed Speed) .................41
Gas Information ............................................................42
Table 11. Gas Flow Rates .........................................42
Table 12. Gas Pipe Capacities ..................................42
Table 13. High Altitude Deration – Propane Gas ......43
Table 14. Natural Gas Heating Values ......................43
Table 15. High Altitude Deration – Natural Gas with
HIGH Heating Value ..................................44
Table 16. High Altitude Deration – Natural Gas with
LOW Heating Value ...................................44
Venting Information ......................................................45
Table 17. Vent Termination Clearances .....................45
GUH92A & GDD92A Series
Figure 35. Horizontal & Vertical Venting ....................46
Figure 36. Venting Options for Upflow
Installations (GUH92A Series) .................47
Figure 37. Venting Options for 1 Pipe Horizontal
Installations (GUH92A Series) .................48
Figure 38. Venting Options for 2-Pipe Horizontal
Installations (GUH92A Series) .................49
Figure 39. Venting Options for Downflow
Installations (GDD92A Series) .................50
GUH95A, GUH95C & GDD95A Series
Figure 40. Horizontal & Vertical Venting ....................51
Figure 41. Venting Options for Upflow Installations
(GUH95A & GUH95C Series) ..................52
Figure 42. Venting Options for Horizontal Installations
(GUH95A & GUH95C Series) ..................53
Figure 43. Venting Options for Downflow Installations
(GDD95A Series) .....................................54
TROUBLESHOOTING ....................................................55
Table 18. Control Board Fault Conditions .................55
Table 19. Motor Control Board Fault Conditions .......55
FURNACE COMPONENTS ............................................55
Figure 44. GUH92A & GUH95A Component
Locations .................................................56
Figure 45. GDD92A & GDD95A Component
Locations .................................................57
..
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