3
WARNING:
Improper installation, service, adjustment,
or maintenance may cause explosion, re,
electrical shock or other hazardous conditions
whichmayresultinpersonalinjuryorproperty
damage. Unless otherwise noted in these
instructions, only factory authorized kits or
accessoriesmaybeusedwiththisproduct.
WARNING:
Donotinstallthisfurnaceifanyparthasbeen
submerged under water. A ood damaged
furnaceisextremelydangerous.Attemptsto
usethefurnacemayresultinreorexplosion.A
qualiedserviceagencyshouldbecontactedto
inspectthefurnaceandtoreplaceanyelectrical
orcontrolsystempartsthathavebeenwetor
underwater.
• 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.
• Follow all precautions in the literature, on tags, and
on labels provided with the equipment. Read and
thoroughly understand the instructions provided with
the equipment prior to performing the installation and
operational checkout of the equipment.
• Usecautionwhenhandlingthisapplianceorremoving
components. Personal injury can occur from sharp metal
edges present in all sheet metal constructed equipment.
• Donotstoreanyofthefollowingon,orincontactwith,
the unit: Rags, brooms, vacuum cleaners, or other
cleaning tools, spray or aerosol cans, soap powders,
bleaches, waxes, cleaning compounds, plastics or
plastic containers, paper bags or other paper products,
gasoline, kerosene, cigarette lighter fluid, dry cleaning
fluids, paint thinners, or other volatile fluids.
• Theinstallershouldbecomefamiliarwiththeunitswiring
diagram before making any electrical connections to
the unit. See Figure 32 (page 40), Figure 33 (page
41), Figure 34 (page 42), & Figure 35 (page 43)
or the unit wiring label.
• Alwaysreinstallthedoorsontheindoorblowerafter
servicing or cleaning/changing the filters. Do not operate
the indoor blower without all doors and covers in place.
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:
The safety information listed in this manual
must be followed during the installation,
service,andoperationofthisunit.Unqualied
individualsshouldnotattempttointerpretthese
instructionsorinstallthisequipment.Failure
tofollowsafetyrecommendationscouldresult
inpossibledamagetotheequipment,serious
personalinjuryordeath.
WARNING:
Unless otherwisenotedintheseinstructions,
onlyfactoryauthorizedkitsoraccessoriesmay
beusedwithorwhenmodifyingthisproduct.
Figure 33. Wiring Diagram for Two-Stage, Fixed
Speed Downflow Furnaces ................. 41
Figure 34. Wiring Diagram for Two-Stage, Variable
Speed Upflow Furnaces ...................... 42
Figure 35. Wiring Diagram for Two-Stage, Variable
Speed Downflow Furnaces ................. 43
Venting Information ................................................ 44
Table 15. Vent Termination Clearances ................ 44
Figure 36. Horizontal & Vertical Venting ............... 45
Figure 37. Upflow Options ................................... 46
Figure 38. Horizontal Options .............................. 47
Figure 39. Downflow Options ............................... 48
TROUBLESHOOTING.............................................. 49
FURNACE COMPONENTS...................................... 49
Table 16. Furnace Control Board Fault
Conditions ............................................. 49
Table 17. Motor Control Board Fault Conditions .. 49
Figure 40. Component Locations ......................... 50
INSTALLATION/PERFORMANCECHECKLIST... 52
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