Heat Controller 7602-503 Heat Pump User Manual

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©2002‐2011M.S.CHOHAN.Duplicationinwholeorinpartisprohibited. Page5of6



INSTALLATIONOFDUCTEXTENSIONKIT

1. InstalltwoNo.8screwsprovidedintothetopflangeof

theMainDuct,atthee xtensionend.Do nottig hten

thescrews.Leaveenoughspaceforonethicknessof

duct materia l (about the thickness of a credit card)

between the flange and the screw head. See figure

below.



IMPORTANT NOTE: Total length of duct extension

assembly,includinganyfieldsuppliedductbetweenmain

and extensionduct, shouldnot exceed 15effective feet

(accordingtoASHRAEstandards).



Forsteps2‐4referenceInstallationDimensionsand

MinimumClearancedrawingonpage2



2. Intheroomwherethe MainDuct

kitisattachedto

the Wallsleeve, cut a holein the wallat thesame

heightfromthefloorthattheMainDuctislocated.

Cut thehole1/8" larger thanthe width and height

(10"x5")dimensions oftheDuctExtension.TIP:Use

a long spirit

level to transfer the cut‐out position

exactlybasedonthepositionoftheMainDuct. 



3. Measurefromthe endofthe MainDuctwherethe

extensionwillbeconnectedtotheholeinthewall.If

necessary,cuttheDuctExtensiontoalengthwhere

thecutend

protrudesintothewall'sinnerspaceand

oneinchfromtheadjoiningroom'swallsurface.



4. Insert the Duct Extension into the opening in the

wall.InstalltheDuctExtensionbyplacingtheslotted

flangeoverthetwoscrews  intheMainDuct. Using

twoNo.8screws,mountbottomof

DuctExtensionto

MountingBracketthroughthebracketslots.



INSTALLATIONOFTRANSITIONCOLLAR

1. Applythefoamgasketincludedinthekittothetop

flangeoftheTransitionCollar.



2. Position the Transition Collar under the Main Duct.

Installthe collaras shownbelow.Ensure the oblong

holesinthetabsontheTransitionCollararecorrectly

alignedwiththecorrespondingholes inthebottomof

the MainDuct. Ensurethecollar iscorrectly aligned

with

theairdischargeopeningonthefrontcover.



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Heat Controller 7602-503 Heat Pump User Manual