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882108-YIM-B-1012
Johnson Controls Unitary Products 17
7. A 1/8 inch N.P.T. plugged tapping, accessible for test
gage connection, must be installed immediately
upstream of the gas supply connection to the furnace.
VENT AND COMBUSTION AIR
NOTE: All the hoods and hardware are shipped within the
evaporator section. Each hood must be properly
attached to the furnace doors to assure proper
operation and compliance with CSA/ETL safety cer-
tification. (Refer to Figure 7.)
The products of combustion are discharged horizontally
through hooded openings in the gas heat access doors.
(Figure 7)
1. Remove the shipping covers that are attached to the
heat section door covering the flue outlets.
2. Locate the flue which is shipped in the evaporator sec-
tion.
3. Place the flue over the flue outlet and attach with screws
provided.
4. Refer to the Gas Furnace Operation Instruction in the
Start-up Section of this manual for further instructions.
Disconnect gas piping from unit when leak testing
at pressures greater than 0.5 psig. Pressures
greater than 0.5 psig will cause gas valve damage
resulting in a hazardous condition. If gas valve is
subjected to pressure greater than 0.5 psig, it must
be replaced.
FIGURE 7 - VENT AND COMBUSTION AIR
HOODS
COMBUSTION
AIR INLET
REMOVE SHIPPING
LABELS PRIOR TO
VENT INSTALLATION
HEAT SECTION DOOR
VENT FLUE
ASSEMBLY
EXHAUST VENT OUTLET
FIGURE 8 - CLEARANCES
60"
60"
60"
10'
60"
60"
60"
60"
60"
10'
* Front is the side with access to the Electrical/Gas Controls
LEFT
RIGHT
END
END
REAR
LEFT
RIGHT
REAR
FRONT
TOP
NOTE: DO NOT use the unit roof to support any type of
structure bracing.
FRONT