Heatilator • HEIR36, HEIR42, HEIR50 Installation Manual • 2285-980 Rev. G • 12/14
24
Three Elbows
Note:
Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
INSTALLED
HORIZONTALLY
H
1
H
2
V
1
V
2
2. Top Vent - Vertical Termination
- (continued)
Figure 4.11
HEIR36 (NG/LP), HEIR42 (NG/LP), HEIR50 (NG/LP)
V
1
H
1
H
2
V
2
H
t
Max.
2 ft
610 mm
*
*
**
7 in
178 mm
3 ft
914 mm
*
*
**
2 ft
610 mm
4 ft
1.2 m
*
*
**
4 ft
1.2 m
5 ft
1.5 m
*
*
**
8 ft
2.4 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
*H
1
and H
2
has no speci
fi
c restrictions EXCEPT,
after V
1
= 6 ft, then H
t
Max = 2 x V
1
**V
T +
H
T
= 60 ft Max.
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.
