Monessen Hearth HDV500NV/PV Indoor Fireplace User Manual


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56D3048
1
HDV Series Direct Vent Gas Fireplace


        
B\,
    
B\,


   


1. Locate and cut the vent opening in the wall. For com-
bustible walls first frame in opening.
 Cut a 11Z\x"H x 9Z\x" W
hole through the interior wall.
   Cut a 9Z\x"H x 9Z\x"W
square hole through the exterior wall frame. Figure 26
Hole opening should be 7Z\x"
(190 mm) in diameter.
. The center of the hole should line up with the center line
of the horizontal rigid vent pipe end. Allow
1
/4" minimum
rise per foot. Figure 26
B\,


VO584-100
Vent Opening
2/99 djt
Figure 26 -
Exterior Wall Framing Dimensions for 4 x 6B\," Venting
9Z\x"
(41 mm)
9Z\x"
(41 mm)


VO584-100
7Z\x"
(190 mm)


When it is not possible to meet the required vent terminal
clearances of 1" above grade level, a snorkel kit is recom-
mended. It allows installation depth down to 7" (178 mm)
below grade level. The 7" (178 mm) is measured from the
center of the horizontal vent pipe as it penetrates through
the wall.




If installing a snorkel, a minimum 4" vertical rise is neces-
sary. The maximum horizontal run with the 4” vertical pipe
is 36". This measurement is taken from the collar of the
fireplace (or transition elbow) to the face of the exterior wall.
See the Sidewall Venting Graph for extended horizontal
run if the vertical exceeds 4".
1. Establish vent hole through the wall. Page 17, Figure
16
. Remove soil to a depth of approximately 16" below base
of snorkel. Install drain pipe. Install window well (not
supplied). Refill hole with 1" of coarse gravel leaving
a clearance of approximately 4" below snorkel. Figure
27
3. Install vent system.
4. Ensure a watertight seal is made around the vent pipe
coming through the wall.
5. Apply high temperature sealant caulking (supplied)
around the 5" and 8" snorkel collars.
6. Slide the snorkel into the vent pipes and secure to the
wall.
7. Level the soil so as to maintain a 4" clearance below
snorkel. Figure 27
FP1965
below grade install
24”
Minimum
Figure 27 -
Below Grade Installation
Screws
Minimum
4" Clearance
Ground
Window
Well
Gravel
Drain
Foundation Wall
Firestop
FP1965
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