Specifications
NOTE:DoNOTUSEwaterinexcessof 130F,astheenzy-
maticactivitywillbedestroyed.
5. ThoroughlyapplyTotalineenviropanentaltyscumcoil
cleanersolutiontoallcoilsurfacesincludingfinnedarea,
tubesheetsandcoilheaders.
6. Holdgardensprayernozzleclosetofinnedareasandap-
plycleanerwithavertical,up-and-downmotion.Avoid
sprayinginhorizontalpatterntominimizepotentialfor
findamage.
7. Ensurecleanerthoroughlypenetratesdeepintofinned
areas.
8. Interiorandexteriorfinnedareasmustbethoroughly
cleaned.
9. Finnedsurfacesshouldremainwetwithcleaningsolution
for10minutes.
10.Ensuresurfacesaxenotallowedtodrybeforerinsing.Re-
applyingcleanerasneededto ensure10-minutesatura-
tionisachieved.
11.Thoroughlyrinseallsurfaceswithlowvelocitycleanwa-
terusingdownwardrinsingmotionofwaterspraynozzle.
Protectfinsfiomdamagefiomthespraynozzle.
CONDENSATEDRAIN Checkandcleaneachyearatthe
startofthecoolingseason.Anaccesspanelislocatedabovethe
condensateconnectiontoalloweasycleanoutoftheconden-
satepan.Thefirsttimethepanelisremoved,theinsulationbe-
hindtheaccesspanelwillneedtobecutaway.Carefullycut
theinsulationwithaknifeorbladeonthreesidessotheinsula-
tioncanbefoldedoutofthewayduringcleaning.Becareful
nottodamagecomponentsbehindtheinsulationwhilecutting.
Oncecleaningiscompleted,foldtheinsulationbackintoplace
andsecuretheaccesspanelintheoriginalposition.
FILTERS Cleanorreplaceatstartofeachheatingandcool-
ingseason,ormoreoftenif operatingconditionsrequire.Refer
tounitinstallationinstructionsfortypeandsize.
OUTDOOR-AIRINLETSCREENSCleanscreenswith
steamorhotwaterandamilddeteNent.Donotusethrowaway
filtersinplaceofscreens.Seeunitinstallationinstructionsfor
quantityandsize.
MAINBURNER(48PGOnly) Atthebeginningof each
heatingseason,inspectfordeteriorationorblockageduetocor-
rosionorothercauses.Observethemainburnertlmnes.Refer
toMainBurnerssectiononpage91.
FLUEGASPASSAGEWAYS(48PGOnly) Thetluecol-
lectorboxandheatexchangercellsmaybeinspectedby
removingheatsectionaccesspanel(Fig.5),tlueboxcover,and
mainburnerassembly(Fig.36).RefertoMainBurnerssection
onpage91forburnerremovalsequence.If cleaningisre-
qnired,cleantubeswithawirebrush.
Usecautionwithcermnicheatexchangerbaffles.Whenin-
stallingretainingclip,besurethecenterlegoftheclipextends
inwardtowardbaffle.SeeFig.37.
COMBUSTION-AIRBLOWER(48PGOnly) Cleanpe-
riodicallytoassureproperairflowandheatingeffidenc3_In-
spectblowerwheeleverytallandperiodicallyduringheating
season.Forthefirstheatingseason,inspectblowerwheelbi-
monthlytodeterminepropercleaningfiequency.
To inspect blower wheel, remove heat section panel. Using
an inspection mirror and llashlight, look into the tlue exhaust
duct to inspect the wheel. If cleaning is required, relnove motor
and wheel assembly by removing the screws holding the flue
box cover to the tlue box. See Fig. 36. Rmnove the screws hold-
ing the inducer housing to the inlet plate. The wheel can then be
relnoved from the motor shaft and cleaned with a detergent or
solvent. Replace the wheel onto the motor shaft in the correct
position and reassmnble the tlue cover onto the tlue box.
HEAT
EXCHANGER
SECTION
IGC BOARD
(HIDDEN)
COMBUSTION
FAN HOUSING
INDUCED
DRAFT
MOTOR
MAI N GAS
VALVE
MAIN BURNER
SECTION
160 -- Integrated Gas Controller
Fig. 36 -- Typical Gas Heating Section
CERAMIC
BAFFLE
CLIP
NOTE: One baffle and clip will be in each upper tube of the heat
exchanger.
Fig. 37 -- Removing Heat Exchanger Ceramic
Baffles and Clips
Lubrication
COMPRESSORS Each compressor is charged with the
correct amount ofoit at the thctory.
The compressor is in a Puron,ยข9reliigerant system and uses
a polyolester (POE) oil. This oil is extremely hygroscopic,
meaning it absorbs water readily. POE oils can absorb
15 times as much water as other oils desiNled for HCFC
and CFC refrigerants. Avoid exposure of the oil to the
atmosphere. Damage to components could result.
Polyolester (POE) compressor lubricants are known to
cause long term damage to some synthetic roofing materials.
Exposure, even if ilrnnediately cleaned up, may cause roofing
materials to become brittle (leading to cracking) within a
year. When pertbnning any service which may risk exposure of
compressor oil to the root; take appropriate precautions to
protect roofing. Procedures which risk oil leakage include com-
pressor replacement, repairing refrigerant leaks, and replacing
refrigerant components. To prepare rooftop:
1. Cover extended roof work area with an impermeable
plastic dropctoth or tarp. Make sure a 10x 10area around
the work area is covered.
86