Installation Instructions

Pressure Testing and Inspection Procedure

a) The final installation must be inspected and tested for leaks in accordance with the local/state

codes. In the absence of local restrictions test in accordance with NFPA 54 (1-1/2 times the

maximum working pressure, but not less than 3 PSI), using the procedures specified in the

latest edition of the National Fuel Gas Code, “Gas Piping Inspection, Testing and Purging”

section. Pressure testing must comply with these guidelines or local codes. When local codes

are more stringent, local codes must be followed.

Note: Remove or isolate the pound-to-inches pressure regulator for system pressure test. Subjecting the

regulator to pressures greater than 10 PSI could damage the regulator and will not expose the

downstream tubing to the correct test pressure.

b) Pressure testing must be performed during rough construction of the facility (before interior walls

are finished). This will permit a more complete inspection of the piping system during the pres-

sure testing.

c) Do not connect appliances or pressurize with fuel gas until after the pressure test has been

performed.

d) All gas outlets for appliance connections should be capped during pressure testing.

e) A 2 PSI system usually requires a pressure test of 10 PSI or greater, depending on local code.

In this case, the regulator must be removed or isolated prior to pressure testing. The test may be

performed as a one-part test replacing the regulator with suitable “jumper” pipe length for

pressure testing the entire system. Or a two-part test may be performed as shown in figure

below.

• The first test is performed on the elevated pressure section, between the meter connection and

the pounds-to-inches house line regulator.

• The second test is performed on the low-pressure section, between the outlet of the pounds-

to-inches house line regulator and the gas appliance outlets.

• For a “two-part” test, it is important to remember to close both gas “shut-off” valves to avoid

damage to the regulator.

f) Electrical bonding must be in place as described on page 28 under “Electrical

Bonding/Grounding.”

5.0 Inspection and Testing of Installed CSST