Installation Guide

Pomona, CA Clemmons, NC Nashville, TN
Tel: [phone] www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
21
Table 13
Propane Gas Pipe Sizing, High-Pressure, 2-Stage Regulation
* 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 0.5 in-wc
Distance from
Tank Regulator
Outlet to
Heater Gas
Valve Inlet
Model H150FDP H200FDP H250FDP H300FDP H350FDP H400FDP
btu/hr input 150,000 200,000 250,000 300,000 350,000 400,000
Line
Material
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
First Stage *
0 to 50 ft 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2"
50 to 100 ft 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 5/8" 1/2" 5/8"
100 to 150 ft 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 5/8" 1/2" 5/8" 1/2" 5/8"
Second
Stage **
0 to 10 ft 1/2" 5/8" 1/2" 5/8" 1/2" 3/4" 3/4" 3/4" 3/4" 7/8" 3/4" 7/8"
H500FDP
500,000
Iron
Pipe
Tubing
1/2" 1/2"
1/2" 5/8"
1/2" 5/8"
3/4" 1"