GMEC96 Installation Manual

33
E
DGES
OF
SHEET
METAL
HOLES
MAY
BE
SHARP
. U
SE
GLOVES
AS
A
PRECAUTION
WHEN
REMOVING
SHEET
METAL
FROM
RETURN
AIR
OPENINGS
.
WARNING


and cut” method to remove sheet metal from the duct opening
in the base pan. To remove, simply press out the lanced sections
by hand to expose the metal strips retaining the sheet metal
over the duct opening. Using tin snips, cut the metal strips and
remove the sheet metal covering the duct opening. In the cor-
ners of the opening, cut the sheet metal along the scribe lines


of the opening using a pair of seamer pliers or seamer tongs.


issues and noise issues.

furnace should be installed in parallel with or on the upstream
side of the cooling unit to avoid condensa tion in the heating


prevent chilled air from entering the furnace and, if manually
operated, must be equipped with means to prevent operation of
either unit unless the damper is in the full heat or cool position.
-
mended that a removable access panel be provided in the outlet
air duct. This opening shall be accessible when the furnace is
installed and shall be of such a size that the heat exchanger
can be viewed for visual light inspection or such that a sampling
probe can be inserted into the airstream. The access panel must
be made to prevent air leaks when the furnace is in operation.

entering the furnace must be between 55°F and 100°F.
CUT FOUR CORNERS
AFTER REMOVING SHEET
METAL
CUT USING TIN SNIPS
PRESS OUT BY HAND
SCRIBE LINES OUTLINING
DUCT FLANGES
Duct Flange Cut Outs
Figure 37


-
nance with the building owner. Filters do not ship with this
furnace, but must be provided, sized and installed externally by
the installer. Filters must comply with UL900 or CAN/ULCS111
standards. Damage or repairs due to the installation of the


locations. Use a straight edge to scribe lines connecting the
dimples. Cut out the opening on these lines.  An un-

     -
quirements.
Model
Minimum Recommended Filter Size^
*MEC960303AN* 1 - 16 X 25 Side or 1- 14 X 25 Bottom
*MEC960403AN* 1 - 16 X 25 Side or 1- 14 X 25 Bottom
*MEC960603AN* 1 - 16 X 25 Side or 1- 14 X 25 Bottom
*MEC960302BN* 1 - 16 X 25 Side or Bottom
*MEC960402BN* 1 - 16 X 25 Side or Bottom
*MEC960603BN* 1 - 16 X 25 Side or Bottom
*MEC960803BN* 1 - 16 X 25 Side or Bottom
*MEC960804CN* 1 - 16 X 25 Side or Bottom
*MEC961004CN* 1 - 16 X 25 Side or Bottom
*MEC961005CN* 1 - 20 X 25 Bottom / 2 - 16 X 25 Side Return
*MEC961205DN* 1 - 20 X 25 Bottom / 2 - 16 X 25 Side Return
*CEC960403BN* 2 - 10 X 20 or 1 - 16 X 25 Top Return
*CEC960603BN* 2 - 10 X 20 or 1 - 16 X 25 Top Return
*CEC960803BN* 2 - 10 X 20 or 1 - 16 X 25 Top Return
*CEC961005CN* 2 - 14 X 20 or 1 - 20 X 25 Top Return
^ Larger filters may be used, filters may also be centrally located
       


Depending on the installation and/or customer preference,
 
installed in the central return register or a side panel external


Consider installing an air cleaner with deep-pleated media


-


will typically require less frequent replacement intervals.




of a centrally installed air cleaner cabinet or a return duct
