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INSTALLATION CHECKLIST
Nominal Iron Pipe Size*
Model 80
125
170
Semi-rigid Tubing
Model
80
125
170
*Flex tubing greatly reduces capacity and, therefore, is not recommended.
Model
80
125
170
*WARNING: Vent size must not be restricted. Installation must comply with
national and local codes.
For installation on well systems, insure that your water pressure is
between 30 - 50 psi.
Gas Line Size*
Natural Gas
1/2"
25"
NR
NR
Liquid Propane
1/2"
15'
NR
NR
Minimum Vent Size* and Height
Min. Diameter
4"
5"
6"
Water Pressure
27
3/4"
1"
100'
150'
40'
125'
25'
80'
5/8"
3/4"
50'
100'
20'
50'
NR
35'
Min. Height
10'
10'
10'
7/8"
100'
70'
Alternative
6' with 5" vent
6' with 6" vent
6' with 7" vent
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