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Installation Procedure for DGAT & DGAM
Furnaces
The following steps are listed for installation of furnace and
need not be performed in the exact order as listed:
Follow this procedure to avoid serious misalignment of fur-
nace duct connector opening and supply duct.
A. This Furnace requires NO sub -- base
For convenience, a template is provided on the furnace
shipping carton. This may be cut out and used to accu-
rately locate furnace, floor and vent openings. See
Figure 12.
Locate template on floor to provide proper clearances
to the walls and the front. Cut 2" diameter hole or small
square hole as indicated on template.
Locate template so that furnace opening outline is cen-
tered over under---floor supply duct as accurately as
possible. This is important because of the limited ad-
justment from side to side, and from front to rear of the
duct connector.
Locate under---floor duct through hole and center "floor
cut ---out opening" on template over duct.
Accurately cut "floor cut ---out opening" from template,
mark floor opening, remove template and cut floor on
outside edge of marked line.
Duct connectors will fit opening in any one of four (4) posi-
tions. Place proper duct connector in the opening in the
best position, (duct connector may be shifted in either di-
rection for best location).
Mark duct opening with a scribe or marking pen, then re-
move duct connector. Cut hole in duct to correct size ac-
cording to dimensions shown in Figure 11. Cut duct accu-
rately to prevent air leakage.
Reinstall duct connector with tabs inside of hole in the duct
and bend tabs up firmly against underneath side of duct.
Secure duct connector to floor with four (4) sheet metal
screws using holes provided in the connector. See
Figure 14.
B. Install Furnace
Remove panel from air conditioning compartment.
Check to make sure roof jack is not extending too far
down into furnace location. Slide furnace into location
and align over floor opening.
Pre---cut openings and knock ---outs are provided in
furnace base to install a front fuel line and/or front re-
frigerant lines. If rear entrance lines are to be used,
they must be installed before the duct connector is
installed and secured in place.
For air conditioning lines, remove the knock ---out.
DGAT & DGAM SERIES FURNACES
C. Securing Furnace
Make any minor adjustments in the furnace location
necessary to insure that the opening in the furnace bot-
tom is centered over the opening in the duct. Secure
furnace to floor, as required, through holes at front and
rear of furnace. Holes for screws are located in bottom
flange front corners and rear flanges.
Secure furnace to wall at top by using metal strap pro-
vided. (See Figure 14.)
Manufacturers may add straps equivalent to provided
straps, if required, for securing furnace to structural
member.
Furnace
Base
Use screw holes in furnace
base to fasten to duct con-
nector (relative to position of
duct connector) .
TABS
DUCT
1.
Insert Duct Plenum
Connector Into Duct
Cut--- out.
Figure 14 — Duct Connector
15
Secure furnace to duct
connector base with 4
screws.
Bend tabs of
duct connector
under duct
opening to se-
cure to the
supply duct.
SUPPLY DUCT
OPENING
Fuel Line
Opening
Refrigerant
Line Opening
TABS
DUCT
2.
Bend Bottom Tabs Over
And Onto The Underneath
Duct Service.
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