PIPING:
General. Consult particular heater section for specific information.
a. GAS
Gas piping must be installed in accordance with the latest edition of the
National Fuel Gas Code ANSI
Z 223.1
and other local or regulatory agency codes that have jurisdiction.
1. Check heater rating plate for
•
Correct Fuel Gas
•
Rated input to meet local conditions such as altitude, gas specification, etc.
2. Piping from meter must be of sufficient size to provide the required amount of gas at flowing
pressures as follows:
Gas
Natural
Propane
BTU/CF
1000
2500
SP. GR
0.60
1.53
Minimum Flowing Pressure
7" W.C.
12" W.C.
Maximum Shut-off Pressure
14" W.C.
14" W.C.
PIPE SIZES
Fuel
Nat.
Propane
Length(feet)
0-100
100-200
200-300
0-100
100-200
200-300
Model
136
3/4
1
1-1/4
3/4
1
1
181
1
1-1/4
1-1/4
1
1
1-1/4
264
1-1/4
1-1/4
1-1/2
1
1-1/4
1-1/4
331
1-1/4
1-1/2
1-1/2
1-1/4
1-1/4
1/1/2
399
1-1/4
1-1/2
1-1/2
1-1/4
1-1/4
1-1/2
512
1-1/2
2
2
1-1/4
1-1/2
1-1/2
627
1-1/2
2
2
1-1/2
1-1/2
2
726
2
2
2
1-1/2
2
2
825
2
2
2-1/2
2
2
2
926
2
2-1/2
2-1/2
2
2
2
962
2
2-1//2
2-1/2
2
2
2
1083
2
2-1/2
2-1/2
2
2
2
1125
2
2-1/2
2-1/2
2
2
2
1178
2-1/2
2-1/2
3
2
2
2-1/2
1223
2-1/2
2-1/2
3
2
2
2-1/2
1287
2-1/2
3
3
2
2-1/2
2-1/2
1337
2-1/2
3
3
2
2-1/2
2-1/2
1413
2-1/2
3
3
2
2-1/2
2-1/2
1467
2-1/2
3
3
2
2-1/2
2-1/2
1570
2-1/2
3
3
2
2-1/2
3
1630
2-1/2
3
3
2
2-1/2
3
1758
2-1/2
3
3
2
2-1/2
3
1826
2-1/2
3
3
2
2-1/2
3
Chart is based on:
0.5" W.C. Pressure Drop Natural Gas
0.6" W.C. Pressure Drop Propane Gas
Fitting provided in gas line have equivalent length of pipe, in feet, as follows:
Size
3/4
1
1-1/4
1-1/2
2
2-1/2
3
4
Elbow
2.5
3
4
4.5
5.5
6.5
8
12
Tee
5
6
8
9
12
14
17
22
3. All gas piping must be tested after installation with air or an inert gas and all connections should be
checked using a soapy solution.
18
Summary of Contents for 136-1826
Page 5: ...5...
Page 39: ...WIRING DIAGRAM KEY 39...
Page 40: ...WIRING DIAGRAMS WIRING DIAGRAM MODELS 136 264 WITH ENERGY PUMP SAVING CONTROL Fig 2288e 40...
Page 41: ...WIRING DIAGRAM MODELS 331 399 Fig 1930e WIRING DIAGRAM MODELS 512 627 Fig 1924e 41...
Page 42: ...WIRINGDIAGRAMMODELS512 726 WIRING DIAGRAM MODELS 726 825 Fig 2194e Fig 2297e 42...
Page 43: ...WIRING DIAGRAM MODEL 825 1826 Fig 1967e WIRING DIAGRAM MODELS 962 1826 43...
Page 44: ...MODEL136GBONLY REPLACEMENT PARTS LISTS 44...
Page 45: ...MODEL136GBONLY 45...
Page 46: ...MODELS 181 264 331 399 GB 46...
Page 47: ...47...
Page 48: ...MODELS 181 264 331 399 GB 48...
Page 49: ...49 MODELS 181 264 331 339 GB...
Page 50: ...MODELS 512 627 726 825 GB 50...
Page 51: ...MODELS 512 627 726 825 GB 51...
Page 52: ...MODELS 512 627 726 825 GB 52...
Page 53: ...MODELS926 1826GB 53...
Page 54: ...MODELS926 1826GB 54...