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Qualified Installing Agency
Installation and replacement of gas piping, gas utilization
equipment or accessories and repair and servicing of equip-
ment shall be performed only by a qualified agency. The term
"qualified agency" means any individual, firm, corporation or
company which either in person or through a representative is
engaged in and is responsible for (a) the installation or re-
placement of gas piping or (b) the connection, installation,
repair or servicing of equipment, who is experienced in such
work, familiar with all precautions required and has complied
with all the requirements of the authority having jurisdiction.
The installation must conform with local codes or, in the
absence of local codes, with the National Fuel Gas Code ANSI
Z223.1*/Canadian Installation Code, CAN/CGA B149.
*Available from the American National Standards Institute, Inc., 11
West 42nd St., New York, N.Y. 10036.
Clearances
1. In selecting a location for installation, it is necessary to
provide adequate accessibility clearances for servicing
and proper installation.
2. The DV-55 minimum wall depth is 4 1/2 inches and
maximum wall depth is 13 inches. The use of tubes not
supplied by the manufacturer results in unsatisfactory
performance.
3. The DV-55 can be attached to the wall or recessed into the
wall up to 4 inches in depth but the minimum 4 1/2 inches
vent/air intake system wall depth must be maintained.
Example: If furnace is recessed into the wall at a depth of
4 inches, the minimum wall depth must be 8 1/2 inches.
4. The wall in which the furnace is recessed has (0) zero
clearance to the furnace sides and top.
5. When using side discharge registers, SOR-1 or SOK-1,
the furnace cannot be recessed into the wall.
6. Clearance to sidewall or combustible material is 4 inches.
7. Ceiling clearance is 4 inches.
8. Floor and rear wall clearance is (0) zero inches.
9. Clearance of 18 inches is required to sidewall or combus-
tible material when flush mounted SOR-1, side outlet
register is used.
10. The minimum distance from the center of the vent cap to
the nearest outside corner or obstruction is 24 inches.
The vent terminal of a direct vent appliance with an input over
50,000 BTU per hour shall be located at least 12 inches from
any opening through which flue gases could enter a building.
The bottom of the vent terminal and the air intake shall be
located at least 12 inches above grade.
WARNING: The nearest point of the vent cap should
be a minimum horizontal distant of six (6) feet from
any pressure regulator. In case of regulator malfunc-
tion, the six (6) feet distance will reduce the chance of
gas entering the vent cap.
Locating Wall Opening
The furnace is to be located on an outside wall. Locate wall
studs so that wall opening will be located between wall studs.
The furnace is 16 inches in width and normal 16 inches on
center studs will not allow the furnace to be recessed into the
wall unless a stud is repositioned. The wall opening required
as shown in Figure 2 is a diameter of 7
A template is provided in furnace carton for positioning
furnace on the wall. Also, refer to Figure 2 for positioning the
furnace on wall and for locating gas line connection.
Page 4
inches.
1/2
Installing Optional Side Outlets
Side outlet register, SOR-1 may be installed on one or both
sides of the furnace at the required clearances of 18 inches to
adjacent wall or combustible material as shown in Figure 1.
1. Locate and cut the 5
side using the template from the kit, exposing the inner
liner knock-out.
2. Remove the knock-out.
3. Place the register on the 5
set for the desired direction and mark the mounting
holes using the register as a template.
4. Drill (2)
" diameter holes in cabinet side and fasten
1/8
the register in place with (2) #10 x 1" screws provided.
Side outlet kit, 10" boot assembly with register, SOK-1 for
warm air discharge into an adjoining room may be installed on
either side of the furnace at the required clearance of 4 inches
to adjacent wall as shown in Figure 3A.
1. Locate and cut the 5
side using the template from the kit, exposing the inner
liner knock-out.
2. Remove the knock-out.
3. Using the inner and outer boots as hole templates, mark
and drill (8)
" diameter holes in the inner liner and
1/8
cabinet side.
4. Using Figure 3A locate and cut a 6
through walls.
5. Prepare wall opening for the vent-air intake system (see
Locating Wall Opening).
6. With furnace in place, after checking alignment of side
outlet opening in wall and furnace, place the 9
side outlet wall plate over outer boot, pass the outer
boot through the wall and attach side outlet wall plate to
furnace side of wall with (2) #10 x 1" screws provided.
7. Fasten outer boot to the cabinet side with (4) #8 x
screws provided.
8. Position and attach inner boot to inner liner with (4) #8
x
" screws provided.
1/4
9. Locate the register with its louvers positioned for the
desired air discharge direction and mark the mounting
holes using the register as a template.
10. Drill (2)
" diameter holes in the wall and fasten the
1/8
register in place with (2) #10 x 1" screws provided.
Figure 1
" square opening in the cabinet
1/2
" opening with the louvers
1/2
" square opening in the cabinet
1/2
" square opening
3/4
" x 9
3/8
"
3/8
"
1/4
R-1628
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