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26127-5-0111
Page 19
Vertical Terminations (Figures 24, 25, and 26)
Locate and mark the center point of the venting pipe. Using a nail
on the underside of the roof and drive this nail through this center
point. Make the outline of the roof hole around this center point.
NOTE:
Size of the roof hole dimensions depend on the pitch of
the roof. There must be a 1 inch clearance (25 mm) to the
vertical pipe sections. This clearance is to all combustible
material.
Cover the opening of the vent pipe and cut and frame the roof hole.
Use framing lumber the same size as the roof rafters and install the
frame securely. Flashing anchored to frame must withstand high
winds. The storm collar is placed over this joint to make a water-tight
seal. Non-hardening sealant should be used to completely seal this
flashing installation.
Determining Minimum Vent Height Above the Roof.
WARNINg: Major U.S. building codes specify minimum chimney
and/or vent height above the roof top. These minimum heights
are necessary in the interest of safety. These specifications are
summarized in Figure 24.
Figure 24
Note that for steep roof pitches, the vent height must be increased.
In high wind conditions, nearby trees, adjoining roof lines, steep
pitched roofs, and other similar factors can result in poor draft, or
down-drafting. In these cases, increasing the vent height may solve
this problem.
LOWEST DISCHARGE OPENING
LISTED CAP
LISTED GAS VENT
H (MINIMUM)
MINIMUM HEIGHT FROM
ROOF TO LOWEST
DISCHARGE OPENING
12
X
ROOF PITCH IS X/12
Figure 25
When terminating the vent cap near an exterior wall or overhang,
maintain minimum clearances as shown in
Figure 24
.
general Maintenance
Conduct an inspection of the venting system semi-annually.
Recommended areas to inspect are as follows:
1. Check areas of the venting system which are exposed to the
elements for corrosion. These will appear as rust spots or
streaks and, in extreme cases, holes. These components should
immediately be replaced.
2. Remove the cap and shine a flashlight down the vent. Remove
any bird nests or other foreign material.
3. Check for evidence of excessive condensate, such as water
droplets forming in the inner liner and subsequently dripping
out at joints. Continue condensate can cause corrosion of caps,
pipe and fittings. It may be caused by having excessive lateral
runs, too many elbows and exterior portions of the system being
exposed to cold weather.
4. Inspect joints to verify that no pipe sections or fittings have been
disturbed and, consequently, loosened. Also, check mechanical
supports, such as wall straps or plumbers' tape for rigidity.
Venting terminal shall not be recessed into a wall or siding.
A removable panel or other means must be provided in the enclosure
for visual inspection of the flue connection.
Installing the Vent System in a Chase
A chase is a vertical box like structure built to enclose the gas
appliance and/or it's vent system. Vertical vent runs on the outside
of a building may be, but are not required to be installed inside a
chase.
Figure 26
CAUTIon: Treatment of firestop spacers and construction of
the chase may vary with the type of building. These instructions
are not substitutes for the requirements of local building
codes. Therefore, your local building codes must be checked
to determine the requirements for these steps.
VERTICAL TERMINATION
ROOF PITCH
H (MINIMUM)
FEET
METER
FLAT TO 6/12
1.0
0.30
6/12 TO 7/12
1.25
0.38
OVER 7/12 TO 8/12
1.5
0.46
OVER 8/12 TO 9/12
2.0
0.61
OVER 9/12 TO 10/12
2.5
0.76
OVER 10/12 TO 11/12
3.25
0.99
OVER 11/12 TO 12/12
4.0
1.22
OVER 12/12 TO 14/12
5.0
1.52
OVER14/12 TO 16/12
6.0
1.83
OVER 16/12 TO 18/12
7.0
2.13
OVER 18/12 TO 20/12
7.5
2.27
OVER 20/12 TO 21/12
8.0
2.44
Содержание DVP30CA30BN-2
Страница 27: ...26127 5 0111 Page 27 Wiring Diagram Figure 34 WIRING continued...
Страница 33: ...26127 5 0111 Page 33 1 2 8 3 4 5 6 7 9 9 10 10 10 10 12 11 11 12 CASTING PARTS VIEW...
Страница 38: ...26127 5 0111 Page 38 APPLIANCE SERVICE HISTORY Date Dealer Name Service Technician Name Service Performed Notes...