Vulcan-Hart ML-052211 Boiler User Manual


 
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Light (GHIR44)
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AND FOLLOW
LOCKOUT / TAGOUT PROCEDURES.
WARNING: SHUT OFF THE GAS BEFORE
SERVICING.
1. Remove the manifold cover assembly as
outlined in Covers, Panels and Handles.
2. Note the location and connection of the
electrical wires.
3. Disconnect the electrical wires from the light.
4. Reverse the procedure to install.
SERVICE PROCEDURES AND ADJUSTMENTS
GAS SUPPLY CHECKS
If the gas supply piping is to be tested at a test pressure in excess of 1/2 psi (3.45 kPa), the appliance and its
individual shutoff valve must be disconnected from the supply line. If the gas supply piping is to be tested at a
pressure equal to or less than 1/2 psi (3.45 kPa), the individual shutoff valve must be closed during testing.
REGULATOR ADJUSTMENT
(ALL MODELS)
WARNING: SHUT OFF THE GAS BEFORE
SERVICING.
Accurate gas pressure adjustment can only be made
with the gas on and the burner lit. In addition the
supply line pressure to the broiler must be at least
1.0” W.C. greater than what is stated on the broiler
unit rating plate.
Regulators are preadjusted for natural or propane gas
as specified on the broiler rating plate.
1. Connect the manometer to the main gas
manifold pipe of the broiler. Turn on gas.
2. Light one burner and take a reading.
3. Light all burners and take a reading.
4. Light all the gas appliances on the same
supply line and take a reading.
A. At no time should the pressure drop more
than 1/2” W.C. A large pressure drop
could be an indication that the gas supply
line is too small or a blockage. Check
supply line pressure to ensure that it is at
least 1.0” greater than the specified
operating pressure of the broiler. Check
with the gas provider for the proper size
gas line.