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Installation Procedure for DLAS Furnace
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 a SUB -- BASE (Included)
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.
Position sub---base over hole.
Duct connectors will fit openings of sub---base in any one of
four (4) positions. Place proper duct connector in the open-
ing in the best position, (duct connector may be shifted in
either direction 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-
Secure Sub --- base
to floor firmly with 2
or more screws Or
nails.
Use screw holes in sub --- base
to fasten duct connector .
TABS
DUCT
1..
Insert Duct Plenum Con-
nector Into Duct Cut--- out.
DLAS SERIES FURNACES
Secure duct connector
to sub --- base with 4
screws.
Bend tabs of duct
connector under duct
opening to secure to the
supply duct.
Secure sub --- base
to floor with 2 nails
or screws.
TABS
DUCT
2..
Bend Bottom Tabs Over And Onto
The Underneath Duct Service.
Figure 13 — Sub -- base / Duct Connector
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 with four (4) sheet metal screws us-
ing holes provided in the connector, and the sub---base.
See Figure 13.
Secure sub---base to floor with 2 or more screws or nails.
B. Install Furnace
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.
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 sub---base, 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 13.)
Manufacturers may add straps equivalent to provided
straps, if required, for securing furnace to structural
member.
14
For improved air
seal, duct
connector flanges
may be sealed to
the sub --- base with
aluminum duct
tape.
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