BASO G92 Series Automatic Pilot Gas Valve - Manual (Page 2)

2 G92 Series BASOTROL Automatic Pilot Gas Valve Installation Instructions
5. Mount the valve to the pipework. Use an approved
pipe joint sealing compound on the male threads
before assembly. Remove excess compound after
mounting the valve to the pipework. Threads of the
pipe and nipples must be smooth and free of tears
and burrs. Steam clean all piping to remove
foreign substances such as cutting oil or thread
chips. A sediment trap should also be installed in
accordance with the National Fuel Gas Code
(ANSI Z223.1).
6. Attach the thermocouple securely to the pilot
burner, and screw the terminal end to the BASO
power unit terminal on the valve. Make sure this
connection is clean. Tighten the thermocouple
lead nut finger tight, plus a maximum of 1/8 turn.
Do not overtighten.
7. Pilot gas connections.
• Internal Pilot Gas Valve Models receive pilot
gas internally from the valve body.
Note: Pilot gas flow comes out of either gas
valve top housing ports.
On internal pilot gas valve models, plumb the
pilot burner fitting to either of the pilot gas
ports on the valve. Plug the unused pilot gas
port on the gas valve. See Figure 2 and
Figure 3.
• External Pilot Gas Valve Models receive
pilot gas from an external gas source.
Note: Pilot gas flow through the gas valve top
housing can be in either direction as indicated
by the arrows.
On external pilot gas valves, plumb the pilot
gas line from an external gas source to either
pilot gas port on the gas valve. Plumb the
other pilot gas port to the pilot burner fitting.
See Figure 4.
!
WARNING: Risk of Explosion or Fire.
Never connect an external gas line to an internal
pilot gas model. Pilot gas would flow freely in one
port and out the other, which could lead to an
explosion or fire and may result in severe personal
injury or death.
!
WARNING: Risk of Explosion or Fire.
Verify that there are no gas leaks by testing with
appropriate equipment. Never use a match or lighter
to test for the presence of gas. Failure to test
properly can lead to an explosion or fire and, may
result in severe personal injury or death.
8. Check for leakage:
a. Close the main upstream manual shutoff valve
and the B valve (applications with a B valve)
and open the pressure connection between the
manual shutoff valve and the G92 valve.
b. Connect air tubing with a maximum pressure of
1-1/2 times the valve’s maximum operating
pressure (as indicated on the valve) to the
opened pressure connection.
c. Paint all valve body connections with a rich
soap and water solution.
If bubbles occur, this is an indication of a leak.
To stop a leak, tighten joints and connections.
Replace the part if the leak cannot be stopped.
If bubbles do not occur, remove the air tubing
and close the pressure connection.