Centro 85-1620-6 - Manual (Page 5)

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4. When the quick disconnect socket and the gas hose are connected, a valve in the sock-
et opens automatically to permit full gas flow. When the gas hose is disconnected, the
valve in the socket instantly and positively shuts off the flow of gas. Because the valve
in the socket positively shuts off the flow of gas, the grill can be disconnected from the
gas source by disconnecting the gas hose from the quick disconnect socket. The socket
should be left attached to the gas source (house piping).
Figure C, on the following
page, shows properly connected hose and socket.
Fig. C
With proper assembly, the gas hose cannot be removed without pushing the quick
disconnect sleeve back. To disconnect, push sleeve back and pull plug out of sleeve (this
automatically shuts off gas).
Please Note: Hose and assembly are C.S.A. listed for natural gas, manufactured
gas, mixed gas and for liquefied petroleum and for LP Gas-Air mixtures on basis
of 0.64 specific gravity for 1000 BTU’s per cubic foot of gas at 0.3 in. water column
pressure drop. Only ANSI Z21.54 approved hoses should be used with this grill.
Pressure Tests: The appliance and its individual shut off valve must be disconnect-
ed from the gas supply piping system during any pressure testing on that system
at test pressures in excess of 1/2 psig (3.5kPa).
The appliance must be isolated from the gas supply piping system by closing its
individual manual shutoff valve during any pressure testing of the gas supply pip-
ing system at test pressures equal to or less than 1/2 psi (3.5kPa).
 W A R N I N G 
Do not use hard metal piping of any kind to connect this
type of grill to natural gas source. Use only hose specified by manufacturer.
Using hard metal piping or convoluted metal tubing is an
unsafe practice. Movement of the grill can cause breakage of metal pipe.