Empire Heating Systems DVC55IPXLP-1 Guide D'installation Et Manuel Du Propriétaire page 12

INSTALLATION INSTRUCTIONS (CONT'D)
Reassembly And Resealing Vent-Air Intake System
When vent-air intake system is removed for servicing the furnace,
the following steps will assure proper reassembly and resealing
of the vent-air intake assembly.
1. Remove old caulking beneath the edge of the outside
mounting plate. Apply new caulking beneath the edge of the
outside mounting plate. Use additional caulking to correct
uneven wall surface, such as clapboard.
2. Remove old furnace cement from flue outlet collar on com-
bustion chamber and collar of vent cap. Remove old furnace
cement from both ends of 4" diameter flue outlet tube.
3. Attach 6" diameter air inlet tube onto the collar of air drop
assembly. Attach caulked, outside mounting plate into the 6"
diameter air inlet tube. Position the outside mounting plate
so that 6" diameter air inlet tube has a slight downward slope
to the outside. The downward slope is necessary to pre-
vent the entry of rainwater. Attach outside mounting plate
to exterior wall with (4) #10 x 1" screws provided.
4. Apply furnace cement to 4" diameter flue outlet collar on
combustion chamber and to 4" diameter collar on vent cap.
Attach 4" diameter flue outlet tube onto flue outlet collar on
combustion chamber. Attach vent cap into the 4" diameter
flue outlet tube. Attach vent cap to outside mounting plate
with (3) #10 x 1/2" screws provided.
5. Reassembly and resealing vent-air intake system is com-
pleted.
Page 12
Installing a Vent Near a Window Ledge,
Other Type of Projection or on Siding (vinyl, aluminum, etc.)
Direct vent furnaces are designed to be installed on a uniform
outside wall. When the wind comes from any angle (up, down or
from either side), it must hit the vent cap equally over both the air
inlet and the flue outlet portions of the vent. Any wall projection,
such as a door or window casing, which disturbs the wind on one
side of the air inlet section will result in back pressure on the flue
section smothering the flame and eventual pilot outage.
When the vent cap is to be installed on siding or it appears that a
projection within 6" of any side of the air inlet section could shield
the air inlet section, the entire vent should be supported away
from the wall at least the distance of the projection. 2" x 4" fram-
ing whose outside dimensions match the overall dimensions of
the mounting plate is recommended. The 2" x 4" framing protects
siding from possible warpage or discoloration. All joints can then
be sealed and painted. The wall depth plus the additional depth
of the 2" x 4" framing should not exceed a total depth of 13" for
DVC-55. See Figure 9.
Vinyl siding vent kit, DV-822, is available from Empire Comfort
Systems, Inc. The depth is 3", which enables the vent cap to be
extended away from siding or projections. The wall depth plus the
additional 3" depth of the vinyl siding vent cap extension should
not exceed a total depth of 13" for DVC-55. See Figure 10.
Warning: When vinyl siding vent kit, DV-822 or 2" x 4"
framing is added to an existing installation (furnace is
installed) do not attempt to add sections of pipe to the flue
outlet tube or air inlet tube. An air tight seal is required for
both tubes. Refer to Parts List, page 21 to order tubes.
Figure 9 Figure 10
37403-5-0620