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On solid wall, when using wall studs for attachment of wall mounting
bracket, fasten wall mounting bracket to wall studs with (2) #10 x
1 1/2" (38mm) screws provided and fasten (2) additional #10 x 1
1/2" (38mm) screws provided through the wall mounting bracket
and into the solid wall.
On sheet rock, when using wall studs for attachment of wall mounting
bracket, fasten wall mounting bracket to wall studs with (2) #10
x 1 1/2" (38mm) screws provided and by using wall opening for
access, fasten 2 additional #10 x 1 1/2" (38mm) screws and (2)
Tinnerman nuts provided through the wall mounting bracket and
into the sheet rock.
Attaching Furnace To Wall Mounting Bracket
Hang furnace on wall mounting bracket by aligning (2) tabs on wall
mounting bracket with (2) slots located on inner casing top.
The inner casing bottom is to be fastened to the wall. On solid wall,
fasten inner casing bottom with (2) #10 x 1 1/2" (38mm) screws
provided. On sheet rock wall, fasten inner casing bottom with (2)
toggle bolts provided.
Cutting Vent Tubes
This is the most important part of the installation. With the furnace
installed on wall the 6" (152mm) diameter air inlet tube and the 4"
(102mm) diameter flue outlet tube are to be marked and cut using
the following procedure.
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.
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 5)
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
INSTALLATION INSTRUTIONS (continued)
