Hayward H300 User Manual

11
SECTION 3. INSTALLATION
Gas supply and piping:
Refer to the charts on Figure 20 for gas pipe sizing for low pressure natural gas, low pressure single propane gas and high pres-
sure two stage propane gas systems.
Gas Pipe Size: Follow local gas codes for proper gas Hoe material selection (copper, Iron or plastic pipe etc.)
Model
btu/hr
input
Line
Material
Model
btu/hr
input
Line
Material
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
¾" ⅞" ¾" ⅞" 1" 1⅛" 1" 1⅛" 1" 1⅛" 1" 1⅛" 1" 
¾" 1⅛" 1" 1⅛" 1" 1⅛" 1" 1⅛" 1"  1¼"  1¼" 
1" 1⅛" 1"  1¼"  1¼"  1¼"  1¼"  1¼" 
1"  1¼"  1¼"  1¼"  1¼"  1¼"  1½" 
Model
btu/hr
input
Line
Material
Second
Stage**
Model
btu/hr
input
Line
Material
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
Iron
Pipe
Tubing
½" ½" ½" ½" ½" ½" ½" ½" ½" ½" ½" ½" ½" ½"
½" ½" ½" ½" ½" ½" ½" ½" ½" ½" ½" ⅝" ½" ⅝"
½" ½" ½" ½" ½" ½" ½" ½" ½" ⅝" ½" ⅝" ½" ⅝"
Second
Stage**
½" ⅝" ½" ⅝" ½" ¾" ½" ¾" ¾" ¾" ¾" ⅞" ¾" ⅞"
Natural Gas Pipe Sizing, Low-Pressure, Single-Stage Regulation
DistancefromGas
MetertoHeaterGas
ValveInlet
H150
H200
H250
H300
H350
H400
150,000 200,000 250,000 300,000 350,000 400,000
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
1¼"
50to100ft
1"
1"
1¼"
1¼"
1¼"
1¼"
0to50ft
¾"
1"
1"
1¼"
1¼"
1½"
200to300ft
1¼"
1¼"
1½"
2"
2"
2"
100to200ft
1¼"
1¼"
1¼"
1½"
1½"
200,000 250,000 300,000 350,000 400,000
0to50ft
Baseduponaninletgaspressureof0.5psigorlessatapressuredropof0.5inwc
Propane Gas Pipe Sizing, Low-Pressure, Single-Stage Regulation
DistancefromTank
RegulatorOutletto
HeaterGasValve
Inlet
H150
H200
H250
H300
H350
H400
150,000
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inwc
Natural Gas Pipe Sizing, High-Pressure, 2-Stage Regulation
Distancefrom
Outletof1stStage
RegulatortoInletof
2ndStageRegulator
H150 H200 H250 H300
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
IronorPlastic
Pipe
H350 H400
150,000 200,000 250,000 300,000 350,000 400,000
H210
210,000
FirstStage
*
0to50ft
½"
½"
½"
½"
100to150ft
½"
½"
½"
½"
½"
50to100ft ½" ½" ½" ½" ¾" ¾"
½"
¾"
¾"
¾"
0to10ft ¾" ¾" ¾" ¾" ¾" ¾"
200,000 250,000 300,000 350,000 400,000
*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
Propane Gas Pipe Sizing, High-Pressure, 2-Stage Regulation
DistancefromTank
RegulatorOutletto
HeaterGasValve
Inlet
H150
H200
H250
H300
H350
H400
½"
½"
¾"
H210
210,000
New Figure 20 for Manual 1302704001 rev F, page 11
VEW 2/7/2013
**Baseduponaninletgaspressureof11inwcatapressuredropof0.5inwc
H210
210,000
IronorPlastic
Pipe
1"
1¼"
1¼"
1½"
H210
210,000
FirstStage
*
0to50ft
50to100ft
100to150ft
0to10ft
*Baseduponaninletgaspressureof10psigatapressuredropof1psi
150,000

Hayward H300 Specifications

General

Brand	Hayward
Model	H300
Category	Swimming Pool Heater
Language	English