Trane TR250 Service & Installation Manual page 22

22
First Stage*
Second
Stage**
*Based upon an inlet gas pressure of 10 psig at a pressure drop of 1 psi
**Based upon an inlet gas pressure of 11 in-wc at a pressure drop of 0.50 in-wc
Propane Gas Pipe Sizing, High-Pressure, 2-Stage Regulation
Distance from Tank
Regulator Outlet to
Btu/hr Input
Heater Gas Valve
Line Material
Inlet
0 to 50 ft
50 to 100 ft
100 to 150 ft
0 to 10 ft
Table 13
Model TR250LP
250,000
Iron Pipe
1/2"
1/2"
1/2"
1/2"
TR400LP
400,000
Tubing Iron Pipe Tubing
1/2" 1/2" 1/2"
1/2" 1/2" 5/8"
1/2" 1/2" 5/8"
3/4" 3/4" 7/8"