Table 3: Appliance Dimensions and Specifications [in.]
Model Width "A" Depth "B" Height "C"
Water
Conn. "D"
Air Inlet
"E"
Flue Height
"F"
Gas
Height
"G"
"H" "I" "J" "K" "L" "M" "N"
Air Inlet
Dia. "W"
Water
Conn.
Prim.
Water Conn.
Sec. Grooved
(Optional)
Gas Conn.
[NPT]
Copper and copper nickel heat exchanger Stainless steel heat exchanger:
500 – 1200 appliance inlet/outlet connections are 2” NPT 500 – 1200 appliance inlet/outlet connections are 2” groove lock
1500 – 5000 appliance inlet/outlet connections are 3” NPT 1500 – 2500 appliance inlet/outlet connections are 2-1/2” groove lock
3000 - 5000 appliance inlet/outlet connections are 3” groove lock
4504 - 6004 appliance inlet/outlet connections are 4” groove lock
Table 4: Vent Sizes for a Single Appliance
Model
Vent Diameter Inches
Model
Vent Diameter Inches
Model
Vent Diameter Inches
Outdoor
Cat III
Up to
50 ft
Cat III
Up to
100 ft
Cat I Outdoor
Cat IV
Up to
50 ft
Cat IV
Up to
100 ft
Cat II
Outdoor
Cat IV
Up to
50 ft
Cat IV
Up to
100 ft
Cat II
0500 4 4 6 8
0502 4 4 6 5
0750 6 6 8 10 0751 6 6 8 6 0752 6 6 8 6
1200 6 6 8 10 1201 6 6 8 7 1202 6 6 8 7
1500 7 7 10 12
1502 7 7 10 8
1750 7 7 10 12 1751 7 7 10 8 1752 7 7 10 8
2500 8 8 12 14 2501 8 8 12 9 2502 8 8 12 9
3000 8 8 12 14
4000 9 9 14 16 4001 9 9 14 12 4002 9 9 14 12
*4500 10 10 14 16 *4501 10 10 14 12 *4502 10 10 14 12
4504 10 10 14 16
5004 10 10 14 16 5014 10 10 14 12 5024 10 10 14 12
6004 12 12 14 16 6014 12 12 14 12 6024 12 12 14 12