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1. Attach 6" (152mm) diameter air inlet tube onto the collar of air drop
assembly. Be sure 6" (152mm) diameter air inlet tube is placed as far
as possible onto the collar of the air drop assembly. Mark the 6"
(152mm) diameter air inlet tube 1/2" (13mm) beyond the outside wall.
Remove 6" (152mm) diameter air inlet tube from collar of air drop
assembly.
2. Attach 4" (102mm) diameter flue outlet tube onto flue outlet collar on
combustion chamber. Be sure 4" (102mm) diameter flue outlet tube
is placed as far as possible onto the collar of flue outlet. Mark the 4"
(102mm) diameter flue outlet tube 2 1/2" (64mm) beyond the outside
wall. Remove 4" (102mm) diameter flue outlet tube from collar of
flue outlet on combustion chamber.
3. Mark or wrap tape completely around the tubes at the marked points
to help in making a true cut. Do not crimp or enlarge tubes.
Installing Vent Assembly
1. Place provided caulking beneath the edge of the outside mounting
plate. Use additional caulking to correct uneven wall surface, such as
clapboard.
2. Attach 6" (152mm) diameter air inlet tube onto the collar of air
drop assembly. Attach caulked, outside mounting plate into the
6" (152mm) diameter air inlet tube. Position the outside mounting
plate so that 6" (152mm) diameter air inlet tube has a slight
downward slope to the outside. The downward slope is necessary
to prevent the entry of rainwater. Attach outside mounting
plate to exterior wall with (4) #10 x 1 1/2" (38mm)screws
provided.
3. Apply furnace cement to 4" (102mm) diameter flue outlet collar
on combustion chamber and to 4" (102mm) diameter collar on
vent cap. Attach 4" (102mm) diameter flue outlet tube onto flue
outlet collar on combustion chamber. Attach vent cap into the
4"(102mm) diameter flue outlet tube. Attach vent cap to outside
mounting plate with (3) #10 x 1/2" (13mm) screws provided.
4. Installation is completed.
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 furnace cement from flue outlet collar on combustion
chamber and collar of vent cap. Remove old furnace cement from
both ends of 4" (102mm) diameter flue outlet tube.
2. 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.
3. Attach 6" (152mm) diameter air inlet tube onto the collar of air
drop assembly. Attach caulked, outside mounting plate into the
6" (152mm) diameter air inlet tube. Position the outside mounting
plate so that 6" (152mm) diameter air inlet tube has a slight
downward slope to the outside. The downward slope is necessary
to prevent the entry of rainwater. Attach outside mounting
plate to exterior wall with (4) #10 x 1 1/2" (38mm) screws
provided.
4. Apply furnace cement to 4" (102mm) diameter flue outlet collar
on combustion chamber and to 4" (102mm) diameter collar on
vent cap. Attach 4" (102mm) diameter flue outlet tube onto flue
outlet collar on combustion chamber. Attach vent cap into the 4"
(102mm) diameter flue outlet tube. Attach vent cap to outside
mounting plate with (3) #10 x 1/2" (13mm) screws provided.
5. Reassembly and resealing vent-air intake system is completed.
R-2070
Installing a Vent Near a Window Ledge,
Other Type of Projection or on Vinyl Siding
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 vinyl siding or it appears that
a projection within 6" (152mm) 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" (51mm
x 102mm) framing whose outside dimensions match the overall
dimensions of the mounting plate is recommended. The 2" x 4"
(51mm x 102mm) framing protects vinyl 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" (51mm x 102mm)
framing should not exceed a total depth of 13" (330mm) for DV-25 and
DV-35. (See Figure 3)
Vinyl siding vent kit, DV-822, is available from Empire Comfort
Systems, Inc. The depth is 3" (76mm), which enables the vent cap
to be extended away from vinyl siding or projections. The wall depth
plus the additional 3" (76mm) depth of the vinyl siding vent cap
extension should not exceed a total depth of 13" (330mm) for DV-25
and DV-35. (See Figure 3a)
Warning: When vinyl siding vent kit, DV-822 or 2" x 4" (51mm
x 102mm) 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 9 to order tubes.
OUTSIDE MOUNTING PLATE
2 x 4 (51 x 102) FRAMING
OUTSIDE MOUNTING PLATE
VENT CAP EXTENSION
APPLY CAULKING
Figure 3
APPLY CAULKING
INCHES (mm)
Figure 3a
Page 5
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