Vulcan-Hart Wolf VCRB25, Installation & Operation Manual

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GAS CONNECTION
All gas supply connections and any pipe joint compound must be resistant to
the action of propane gases.
Purge the supply line to cle an out any dust, dirt, or any foreign matter before connecting
the line to the unit.
Codes require that a gas shut -off valve be installed in the gas line ahead of the
charbroiler. The gas supply line must be at least the equivalent of ¾” iron pipe.
A pressure regulator is supplied and must be installed outside of the broiler when making
the gas supply connection. Standard orifices are set for 4"WC (W ater Column) for
Natural Gas
— 10"WC (Water Column) for Propane. Use the 1
/
8
” pipe tap on the burner
manifold for checking pressure. Make sure the gas piping is clean and free of
obstructions, dirt, and piping compound.
An adequate gas supply is necessary. Undersized or low pressure lines will restrict the
volume of gas required for satisfactory performa nce. A minimum supply pressure of 7"
W.C. for natural gas and 11" W .C. for propane gas is recommended. W ith all units
operating simultaneously, the manifold pressure on all units should not show any
appreciable drop.
When testing the gas supply piping system, if test pressures exceed ½ psig (3.45 kPa),
the charbroiler and its individual shutoff valve must be disconnected from the gas supply
piping system. W hen test pressures are ½ psig (3.45 kPa) or less, the charbroiler must
be isolated from the gas supply piping system by closing its individual manual shut -off
valve during any pressure testing of the system.
Prior to lighting, check all joints in the gas supply line for leaks.
Use soap and water solution. Do not use an open flame.
GAS PRESSURE REGULATOR INSTALLATION
This charbroiler is supplied with a convertible gas pressure regulator preset at
4” Water
Column (W .C.) for natural gas. No further adjustment should be required. Install the
regulator as close to the charbroiler on the gas supply line as possible. Make sure that
the arrow on the underside of the regulator is oriented in the direction of gas flow to the
charbroiler (Fig. 2) and the regulator is positioned with the vent plug and conversion plug
cover upright (Fig. 3).
Fig. 2 Fig. 3