Brochure

Gastite Division, Titeflex Corporation
1116 Vaughn Parkway / Portland, TN 37148
800.662.0208 / www.gastite.com / [e-mail]
67
April 2015
Section 4: Installation Practices
4.8.4 Performance
a) A performance test should be conducted while operating all appliances at full load. is will test if adequate pressure
is reaching each appliance under full-load conditions. To accomplish this, measure the line pressure at the appliance
connection while operating the appliance.
b) e inlet pressure for typical gas appliances under full load conditions should be equal to but not exceeding the appliance’s
recommended inlet pressure range. If these pressure ranges cannot be obtained, a slight adjustment to the service regulator
or the pounds-to-inches regulator may be necessary to increase line pressure.
4.8.5 Regulator Outlet Pressure Adjustment
a) Adjustment can be accomplished by first removing the regulator seal cap to expose the adjusting screw. Turning the screw
clockwise will increase outlet pressure, turning it counter-clockwise will decrease pressure.
b) If spring adjustment will not produce the desired outlet pressure, check to make sure the main supply pressure is adequate
If the main supply pressure is adequate, consult factory for other line-regulator options. Do not continue to turn regulator
adjusting screw clockwise if the outlet pressure readings do not continue to increase. is may result in over-firing due to
loss of pressure control, should there be a subsequent increase in inlet pressure.
c) e line regulators can be adjusted with an outlet pressure ranging between 7 and 11 inches water column. e regulator
must be adjusted according to the manufacturers recommended procedure. A pressure gauge mounted just downstream of
the regulator can monitor the set pressure under various loads.
4.8.6 Over-Pressurization Protection
Downstream over-pressure protection must be provided in any gas piping installation where a line-pressure regulator is
utilized for pressures in excess of 2 PSI to supply appliances rated for 1/2 PSI or less inlet pressure. Special line regulators
of suitable control and capacity must be installed in place of the standard line regulator. is regulator contains an integral
over-pressure protection device (OPD) (Fig. 4-91). is special regulator with OPD must be assembled and listed by the
manufacturer in accordance with Z21.80, “Standard for line pressure regulators”. Refer to Tables 4-7 through 4-9 for OPD
capacities and sizing.
NOTE: When using regulators other than those specified by Gastite Division for use with the FlashShield™ or CSST system,
careful consideration must be given to the regulator performance characteristics such as required inlet pressure, flow capacity,
the pressure drop through the regulator and available outlet pressure.
Fig. 4-91