Gas Supply And Piping - Hayward H200FD Service & Installation Manual

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Gas Supply and Piping :

To properly size the gas piping for the heater, refer to Tables 10, 11, 12, and 13, depending on natural or propane gas, and single-stage or
2-stage regulation. Follow local gas codes for proper gas line material selection (copper, iron, plastic, etc.). It is VERY IMPORTANT when
installing a propane heater on a 2-stage regulation system to follow the gas line sizing data in Table 13 without exception.
Model
Distance from Gas
btu/hr input
Meter to Heater Gas
Valve Inlet
Line Material
0 to 50 ft
50 to 100 ft
100 to 200 ft
200 to 300 ft
Based upon an inlet gas pressure of 0.5 psig or less at a pressure drop of 0.5 in-wc
Distance from Model
Tank Regulator
btu/hr input
Outlet to
Line
Heater Gas
Material
Valve Inlet
0 to 50 ft
50 to 100 ft
100 to 200 ft
200 to 300 ft
Based upon an inlet gas pressure of 11 in-wc at a pressure drop of 0.5 inch w.c.
Distance from Outlet
of 1st Stage Regulator
to Inlet of 2nd Stage
Regulator
0 to 50 ft
First Stage * 50 to 100 ft
100 to 150 ft
Second
0 to 10 ft
Stage **
* Based upon an inlet gas pressure of 2 psig at a pressure drop of 1 psi
** Based upon an inlet gas pressure of 10 in-wc at a pressure drop of 0.5 in-wc
Natural Gas Pipe Sizing, Low-Pressure, Single-Stage Regulation
H150FDN
150,000
Iron or Plastic Pipe Iron or Plastic Pipe
3/4"
1"
1-1/4"
1-1/4"
Propane Gas Pipe Sizing, Low-Pressure, Single-Stage Regulation
H150FDP H200FDP
150,000 200,000
Iron Pipe Tubing Iron Pipe
3/4" 7/8" 3/4"
3/4" 1-1/8" 1"
1" 1-1/8" 1"
1" --- 1-1/4"
Natural Gas Pipe Sizing, High-Pressure, 2-Stage Regulation
Model H150FDN
btu/hr input 150,000
Iron or Plastic
Line Material
Pipe
1/2"
1/2"
1/2"
3/4"
Table 10
H200FDN H250FDN
200,000 250,000
Iron or Plastic Pipe
1" 1"
1" 1-1/4"
1-1/4" 1-1/4"
1-1/4" 1-1/2"
Table 11
H250FDP
250,000
Tubing Iron Pipe Tubing
7/8" 1" 1-1/8"
1-1/8" 1" 1-1/8"
--- 1-1/4" ---
--- 1-1/4" ---
Table 12
H200FDN H250FDN
200,000 250,000
Iron or Plastic
Iron or Plastic
Pipe
Pipe
1/2"
1/2"
1/2"
3/4"
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400
H300FDN H350FDN
300,000 350,000
Iron or Plastic Pipe Iron or Plastic Pipe
1-1/4" 1-1/4"
1-1/4" 1-1/4"
1-1/2" 1-1/2"
2"
H300FDP H350FDP
300,000 350,000
Iron Pipe Tubing Iron Pipe
1" 1-1/8" 1"
1" --- 1-1/4"
1-1/4" --- 1-1/4"
1-1/4" --- 1-1/4"
H300FDN
300,000
Iron or Plastic Iron or Plastic
Pipe
1/2" 1/2"
1/2" 1/2"
1/2" 3/4"
3/4" 3/4"
www.haywardpool.com
H400FDN
400,000
Iron or Plastic Pipe
1-1/4"
1-1/4"
1-1/2"
2" 2"
H400FDP
400,000
Tubing Iron Pipe Tubing
1-1/8" 1" ---
--- 1-1/4" ---
--- 1-1/4" ---
--- 1-1/2" ---
H350FDN H400FDN
350,000 400,000
Iron or Plastic
Pipe Pipe
1/2" 1/2"
3/4" 3/4"
3/4" 3/4"
3/4" 3/4"