Specifications

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Installation, Operation, and Care of
MODEL MHB24G
MODULAR GAS STEAM BOILER
KEEP THIS MANUAL FOR FUTURE USE
GENERAL
Vulcan gas steam boilers are produced with quality workmanship and material. Proper installation,
usage, and maintenance of your boiler will result in many years of satisfactory performance.
It is suggested that you thoroughly read this entire manual and carefully follow all of the instructions
provided.
The boiler can be built for natural gas or propane with gas input rating of 270,000 BTU/hr. Boiler is rated
high efficiency. Boiler output is rated 5.5 boiler horsepower (BHP), equal to approximately 190 lbs. of
steam per hour.
INSTALLATION
Before installing, verify that the electrical service and type of gas supply (natural or propane) agree with
the specifications on the rating plate located on the door of the boiler. If the supply and equipment
requirements do not agree, do not proceed with the installation. Contact your dealer or Vulcan-Hart
Company immediately.
UNPACKING
The gas steam boiler was inspected before leaving the factory. The transportation company assumes
full responsibility for safe delivery upon acceptance of the shipment. Immediately after unpacking,
check for possible shipping damage. If the boiler is found to be damaged, save the packaging material
and contact the carrier within 15 days of delivery.
LOCATION
The equipment area must be kept free and clear of combustible substances.
The gas steam boiler, when installed, must have a minimum clearance from combustible and
non-combustible construction of 6"
(15.2 cm) at left and right sides and the rear. Provide adequate
clearance for servicing and proper operation: Allow 18"
(45.7 cm) at left and right sides, 18" (45.7 cm) at
the rear, and 36"
(91.4 cm) at the front.
An exhaust system should be located directly above the gas steam boiler to exhaust steam,
combustion gases, and heat generated by the boiler.
The gas steam boiler must be installed so that the flow of combustion and ventilation air will not be
obstructed. Make sure there is an adequate supply of air in the room to allow for combustion of the
gas at the burner. The floor area beneath the boiler must be kept free and clear.
Do not permit fans to blow directly at the gas steam boiler and avoid wall-type fans which create air
cross currents within the room. Avoid open windows next to the boiler.