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Heatilator • HEIR36, HEIR42, HEIR50 Installation Manual • 2285-980 Rev. G • 12/14
F. Vent Diagrams
WARNING! Risk of Fire.
This appliance requires a minimum of 24 inches of vertical venting before attaching any elbow to
the appliance.
DO NOT
attach elbow directly to the appliance.
General Rules:
• This appliance is approved for use with Hearth & Home Technologies DVP venting systems ONLY.
• When penetrating a combustible wall, a wall shield
fi
restop must be installed.
• When penetrating a combustible ceiling, a ceiling
fi
restop must be installed.
• This appliance requires a minimum of 24 inches of vertical pipe attached directly to the appliance starting collar before
attaching a 90 degree or 45 degree elbow.
• Horizontal termination cap should have a 1/4 inch downward slant to allow any moisture in cap to be released.
H
1
V
1
1. Top Vent - Horizontal Termination
Figure 4.6
One Elbow
Note:
Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
HEIR36 (NG/LP), HEIR42 (NG/LP),
HEIR50 (NG/LP)
V
1
Minimum
H
1
Maximum
2 ft
610 mm
7 in*
178 mm
2.5 ft
762 mm
17 in.
432 mm
3 ft
914 mm
2 ft
610 mm
4 ft
1.2 m
4 ft
1.2 m
5 ft
1.5 m
9 ft
2.7 m
6 ft
1.8 m
12 ft
3.7 m
7 ft
2.1 m
14 ft
4.3 m
10 ft
3.0 m
20 ft
6.1 m
20 ft
6.1 m
40 ft
12.2 m
After V
1
= 6 ft then H
1
= 2 x V ft Maximum
V
1
+ H
1
= 60 ft Maximum
*when used with approved termination caps
WARNING! Risk of Fire!
• HEIR36(NG/LP), HEIR42(NG/LP) and HEIR50(NG/LP) models
require a minimum of 24 inches of vertical venting before attaching
any elbow to the appliance.
DO NOT attach elbow directly to the appliance.
