Weber Vieluxe 27 Built-In Grill Owner's Manual page 7

We utilize various LP tank manufacturers. Some of the
tanks have differing top collar assembles. (The top
collar is the metal protective ring around the valve.)
One series of tanks mount with the valve facing front.
The other tanks mount with the valve facing away from
the fuel scale. These types of tanks are illustrated
below.
You will need: LP cylinder, a soap and water solution
and a rag or brush to apply it.
1) Turn the LP cylinder so the opening of the valve is
either to the front, side or rear of the Vieluxe
Tank Drawer. Lift and hook the cylinder onto the
fuel gauge.
2) Loosen the cylinder lock wing nut. Swing the
cylinder lock down. Tighten the wing nut.
To Connect the hose to the cylinder.
3) Remove the plastic dust cover from the valve.
4) Screw the regulator coupling onto the tank valve,
clockwise, or to the right. Hand-tighten only.
Note: This is a new type of connection. It tightens
clockwise and will not allow gas to flow unless the
connection is tight. The connection requires tightening
by hand only.
WARNING: Do not use a wrench to tighten the
connection. Using a wrench could damage the
regulator coupling and could cause a leak.
5) Mix soap and water.
6) Turn on the cylinder valve.
® LP
7) Check for leaks by wetting the fitting with the soap
and water solution and watching for bubbles. If
bubbles form, or if a bubble grows, there is a leak.
If there is a leak, turn off the gas and tighten the fitting.
Turn the gas back on and recheck with the soap and
water solution.
If leak does not stop, Contact information sheet
provided with your manual. Do not use the barbecue.
8) When leak checking is complete, turn gas supply
OFF at the source and rinse connections with water.
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