Monessen Hearth 624DV(ST - Manual (Page 22)

22 42D0200
Designer Series Gas Fireplaces
FP2308
support straps
vERTICaL ThRouGh-ThE-RooF aPPLICaTIoNS
This Gas Fireplace has been approved for,
• Vertical installations up to 40' (12 m) in height. Up to a 10' (3 m) horizontal vent run can be installed
within the vent system using a maximum of two 90° elbows. Figure 28
Figure 30 -
Support Straps for Horizontal Runs
vENTING INSTaLLaTIoN
• Up to two 45° elbows may be used within the
horizontal run. For each 45° elbow used on
the horizontal plane, the maximum horizontal
length must be reduced by 18" (450 mm).
Example: Maximum horizontal length
No elbows = 10’ (3 m)
1 x 45° elbows = 8.5’ (2.6 m)
2 x 45° elbows = 7’ (2.1 m)
• A minimum of an 8' (2.5 m) vertical rise is
required.
• Two sets of 45° elbows offsets may be used within
the vertical sections. From 0 to a maximum of 8'
(2.5 m) of vent pipe can be used between elbows.
Figure 31
• The maximum angular variation allowed in the
system is 270°. Figure 31
• The minimum height of the vent above the high-
est point of penetration through the roof is 2' (610
mm).
40' Maximum Height
8' Minimum Height
40' Maximum Height
8' Minimum Height
10'
Maximum
10'
Maximum
Support Straps
Every 3'
Support Straps
Every 3'
FP2308
1
2
3
4
1
2
3
4
FP2309
max elbow use A
Figure 31 -
Maximum Elbow Usage
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
FP2309