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614

ENGINEERING DATA

HEATER GAS SUPPLY AND PIPE SIZING INFORMATION

When installing any Pentair or Sta-Rite pool or spa heater, it is very important to have the proper amount of gas supplied to

all Pentair or Sta-Rite Heaters for pools. Below, for your information, is a table which will assist you in selecting the correct

size of piping for the installation.

When installing any gas appliance, it is very important to have the proper size gas meter and home pressure regulator

installed. Once you have selected the correct size heater for the pool or spa, contact the local utility which supplies the gas

and request a field review of the installation and have them install the proper size meter and proper size pressure regulator.

LOW PRESSURE, SINGLE STAGE PIPE SIZING FOR GAS LINE CONNECTIONS

4

Natural gas at 1000 BTU per Cubic Foot

Propane Gas at 2500 BTU per Cubic Foot

MODEL

1/2 in.

3/4in.

1 in.

1-1/4 in.

1-1/2 in.

2 in.

2-1/2 in.

NAT

PRO

NAT

PRO

NAT

PRO

NAT

PRO

NAT

PRO

NAT

PRO

NAT

PRO

100 & 75 20 ft. 50 ft.

200

-

20 ft.

300

-

-

400

-

-

750

-

-

50 ft.150ft.150ft

.

600

-

-

-

-

-

-

ft.

30 ft. 80ft. 125ft. 250ft. 450ft. 600ft.

-

-

-

-

10 ft. 30ft. 50ft. 100ft. 200ft. 350ft. 400ft. 600ft.

-

-

-

10ft. 20ft. 60ft. 100ft. 150ft. 200ft. 450ft. 400ft.

-

-

-

-

-

-

-

-

-

-

-

150

10 ft.

40 ft.

50 ft.

150 ft.

150 ft.

600

ft.

-

-

-

-

-

-

-

-

250

-

10 ft.

20 ft.

50 ft.

70 ft.

150 ft.

250 ft.

500 ft.

600 ft.

-

-

-

-

-

350

-

-

10 ft.

20 ft.

30 ft.

70 ft.

125 ft.

250 ft.

250 ft.

500 ft.

500 ft.

-

-

-

525

-

-

-

5 ft.

15 ft.

35 ft.

65 ft.

150 ft.

130 ft.

360 ft.

390 ft.

700 ft.

-

-

-

-

-

20 ft.

35 ft. 80 ft. 75 ft. 180 ft. 260 ft. 600 ft.

900

-

-

-

-

-

15 ft.

20 ft.

45 ft.

45 ft.

100 ft.

150 ft.

360 ft.

400 ft.

-

Gas Pressure

Model

Natural

Propane

Inches W. C.

Gas Pressure Requirements Pentair Water Heaters

Maximum

Inlet

CH

10

14

STD

10

14

TSI

10

N/A

LN

10

N/A

Minimum

Inlet

CH

6

12

STD

6

12

TSI

4

N/A

LN

6

N/A

Manifold

CH

4

11

STD

4

11

TSI

2

N/A

LN

4

N/A

Gas Pressure

Natural

Propane

Inches W. C.

Gas Pressure Requirements for MiniMax 75 & 100 Pentair

Water Heaters

Normal Altitudes (0–2500 ft. above Sea Level)

Maximum Inlet

10

14

Minimum Inlet

5

12

Normal Manifold

4

11

High Altitudes (2500–7000 ft. above Sea Level)

Maximum Inlet

10

14

Minimum Inlet

5

12

Normal Manifold

3

7

Note: All readings must be taken while heater is

operating. Any adjustments or readings made while

heater is off will give incorrect readings and should

not be used for evaluation of heater operation.

All Values are +/- 0.2 inch W. C.

Gas Pressure

Model

Natural

Propane

Inches W. C.

Gas Pressure Requirements for MasterTemp,

Max-E-Therm and ETi 400 Pentair Water Heaters

Maximum

Inlet

MT

14

14

Minimum

Inlet

MT

4

4

Manifold

MT

-0.2 ± 0.1

-0.2 ± 0.1