Monessen Hearth HDV500NV/PV 用户手册
56D3048
19
HDV Series Direct Vent Gas Fireplace
VeNtING INStAllAtIoN
W
ARNING
When installing the appliance as a rear vent unit, the 90°, 45° transition elbow
attached directly to the rear of the unit is Not INCluDeD in the following
criteria and calculations, and unless specifically mentioned should be ignored
when calculating venting layouts.
attached directly to the rear of the unit is Not INCluDeD in the following
criteria and calculations, and unless specifically mentioned should be ignored
when calculating venting layouts.
•
The maximum number of 90° elbows per side wall
installation is three (3). Figure 20
•
If a 90° elbow is fitted directly on top of the fireplace
flange, the maximum horizontal vent run before the ter-
mination or a vertical rise is 36" (914 mm). Figure 21
mination or a vertical rise is 36" (914 mm). Figure 21
FP1176
max 90 bends
max 90 bends
Figure 20 -
Maximum Three (3) 90° Elbows
Per Installation
Maximum Three (3) 90° Elbows
Per Installation
3 x 90°
Elbows
Elbows
3 x 90°
Elbows
Elbows
FP1176
Max 20"
Max 20"
36"
(914 mm)
Max.
36"
(914 mm)
Max.
FP1177
max horizontal run
max horizontal run
Figure 21 -
Maximum Horizontal Run with No Rise
Maximum Horizontal Run with No Rise
FP1177
•
If a 90° elbow is used in the horizontal vent run (level
height maintained) the horizontal vent length is reduced
by 36" (914 mm) (Fig. 1 A and B) This does not apply if
the 90° elbows are used to increase or redirect a vertical
rise. Figure 22
by 36" (914 mm) (Fig. 1 A and B) This does not apply if
the 90° elbows are used to increase or redirect a vertical
rise. Figure 22
Example: According to the vent graph (page 17) the maxi-
mum horizontal vent length in a system with a 7.5' vertical
rise is 20’ (6 m) and if a 90° elbow is required in the hori-
zontal vent it must be reduced to 17' (5.2 m).
In Figures 22 and 24, Dimension A plus B must not be
greater than 17' (5. m).
mum horizontal vent length in a system with a 7.5' vertical
rise is 20’ (6 m) and if a 90° elbow is required in the hori-
zontal vent it must be reduced to 17' (5.2 m).
In Figures 22 and 24, Dimension A plus B must not be
greater than 17' (5. m).
A: 10’
B: 7’
7’6”
FP1959
max run w/elbows
max run w/elbows
Figure 22 -
Maximum Vent Run with Elbows
Maximum Vent Run with Elbows
Horizontal 90° Elbow = 3' Reduction
FP1959
A + B = 17' Maximum
A
B
7’6”
90°
FP2413
horz run reduct
horz run reduct
Figure 23 -
Horizontal Run Reduction
Horizontal Run Reduction
FP466