V4295A,S; V8295A,S SOLENOID GAS VALVES
7
65-0194—04
10.
When the rate of bubbles coming through the water sta-
bilizes, count the number of bubbles appearing during a
ten-second period. Each bubble appearing represents a
flow rate of 0.001 cfh.
IMPORTANT
To meet U.S. requirements, make sure leakage does
not exceed the rates in Table 6.
* Based on air at standard conditions, test pressures provided by ANSI Z21.21.
Section 2.42 and a maximum of 235 cc/h per inch of seal-off diameter (not pipe size).
Fig. 8. Valve leak test.
NOTE: For international leak test requirements, contact the
appropriate approval agency.
After the Test
1.
Close the upstream manual gas cock (
A
).
2.
Close the manual test petcock (
F
), remove the test
apparatus, and close the leak test tap (
D
).
3.
Make sure the downstream manual gas cock (
E
) is
closed.
4.
Open the upstream manual gas cock (
A
) and energize
the V4/8295A Valve through the safety system.
5.
Test with rich soap and water solution to make sure
there is no leak at the leak test tap (
D
) or any pipe
adapter/valve mating surfaces.
6.
De-energize the V4/8295A Valve (
C
).
7.
Open the downstream manual gas cock (
E
).
8.
Restore the system to normal operation. If two safety
shutoff valves are used, check each valve separately for
closure tightness.
TROUBLESHOOTING
CAUTION
Use utmost care during troubleshooting. Line
voltage is present at the actuator for V4295A,S and
present in controller circuits. Low voltage (24 Vac)
is present at the actuator for V8295A,S and
present in controller circuits.
IMPORTANT
Do not assume that the valve must be replaced until
all other sources of trouble have been eliminated.
Table 6. Valve Allowable Leakage Rate.
V4295A/V8295A
Pipe Size (in)
Medium
Allowable
Leakage SCCH*
Maximum Number of Bubbles in 10
Seconds
Minimum Number of Seconds for
10 Bubbles
3/8 & 1/2
0.64 gas
294
7
13
1.57 LP
188
4
20.4
3/4 & 1
0.64 gas
301
7
12.7
1.57 LP
192
5
19.9
1-1/4 & 1-1/2
0.64 gas
532
13
7.2
1.57 LP
341
8
11.2
2
0.64 gas
578
15
6.6
1.57 LP
370
9
10.3
1-1/2
0.64 gas
752
19
5.1
1.57 LP
481
12
8
3
0.64 gas
925
24
4.1
1.57 LP
592
15
6.5
M9547F
GAS
SUPPLY
UPSTREAM
MANUAL
GAS COCK
DOWNSTREAM
MANUAL
GAS COCK
BURNER
D
A
B
C
E
F
PRV
MANUAL
TEST
PETCOCK
SSOV
1/4 IN. (6 MM)
FLEXIBLE
TUBING
1/4 IN. (6 MM)
ALUMINUM OR
COPPER PILOT
TUBING
JAR OR GLASS
WITH WATER
CUT AT
45 DEGREE
ANGLE
CAN ALSO BE A PERMANENT PETCOCK.
PRV = PRESSURE REGULATING VALVE.
SSOV = SAFETY SHUTOFF VALVE.
USE ONLY ONE OF THE DOWNSTREAM TAPS ON THE SS0V.
1
2
3
4
4
2
3
1
1
2
(13 MM)
LEAK
TEST
TAP