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COMBAT
®
CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL
38
16.4 Flue Fan
Vent Box
Outlet
Gasket
Flue Fan
Vent Box
Screws
Flue
Adapter
Flue Adapter
to Flue Fan
screws
Rear Panel
Hole
Disconnect
electrical connections
at plug in tabs.
Mounting Plate
to Vent Box
Screws
Mounting
Plate
Gasket
Air Plate
Mounting Plate
to Flue Fan
Screws
Vent Box
Gasket
Remove screws securing outlet
flange to the flue adapter.
Remove screws securing flue
fan mounting plate to vent box.
Remove screws securing
mounting plate to fan.
Refit in reverse.
Use new gaskets.
Ensure sealed joints.
Ensure mounting plate orifice is
clear and not obstructed.
MODEL CTU-22 CTU-30 CTU-35 CTU-40 CTU-50 CTU-60 CTU-75 CTU-90 CTU-100 CTU-115
Flue Fan Torin DSA
508-128
077272
Torin DSA
508-128
077272
Torin DSA
508-128
077272
Torin DSA
508-128
077272
Torin DSA
524-202
077273
Torin DSA
524-202
077273
AO Smith
JFIG098NS
AO Smith
JFIG098NS
AO Smith
JFIG098NS
Torin DSF
146-052
077274
RG P/N 90710430 90710430 90710430 90710430 90710440 90710440 90710001 90710001 90710001 90710450
Air mm Ø
Plate in Ø
47.6
1.875
53.1
2.09
60.7
2.39
69.1
2.72
60.7
2.39
69.9
2.75
97.0
3.82
103.6
4.08
110. 5
4.35
152.4
6
RG P/N 11011139 1101138 1101140 11011137 11011136 11011135 11011134 11011133 11011132 11011131
IT IS IMPORTANT THAT ONLY THE CORRECT FLUE FAN SPECIFIED FOR EACH MODEL TYPE IS
USED WHEN REPLACING THESE ITEMS.
Carry out a commission after working on or changing a flue fan. See Page 28, Section 12.