Patterson-Kelley TBIG-03 - Manual (Page 13)

Installation
leak test valve. (Refer to Figure 4-8 above.) In-
sert the free end of the hose in a cup of water.
4. Open the downstream leak test valve and check
for bubbles in the hose. If there are no bubbles the
secondary motorized gas valve is OK. If there are
bubbles, replace the valve.
5. Attach the hose to the upstream leak test valve.
6. Open the upstream leak test valve and check for
bubbles in the hose. If there are no bubbles the
natural gas motorized gas valve is OK. If there
are bubbles, replace the valve.
To test the propane branch of the gas train, open the
propane connection manual shutoff. Close the natural
gas connection manual shutoff. Then repeat steps 5 -
6 above.
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