Install Instructions

29
VIII. Service
A. General. Inspection and service should be conducted
annually. Turn off electrical power and gas supply while
conducting service or maintenance. Follow instructions
TO TURN OFF GAS TO APPLIANCE. See Figure 13.
B. Inspect Housekeeping. Boiler area must be clear and
free from combustible materials, gasoline and other
flammable vapors and liquids. Remove obstructions to
the flow of combustion and ventilation air.
C. Low water cut-off (if so equipped).
1. Float Type
a. Monthly Blowoff. During the heating season, if
an external float type low water cut-off is on the
boiler, the blow off valve should be opened once
a month (use greater frequency where conditions
warrant), to flush out the sediment chamber so
the device will be free to function properly.
b. Annual Service. Float type low water cutoffs
should be dismantled annually by qualified
personnel, to the extent necessary to insure
freedom from obstructions and proper
functioning of the working parts. Inspect
connecting lines to boiler for accumulation of
mud, scale, etc., and clean as required. Examine
all visible wiring for brittle or worn insulation
and make sure electrical contacts are clean
and that they function properly. Give special
attention to solder joints on bellows and float
when this type of control is used. Check float
for evidence of collapse and check mercury bulb
(where applicable) for mercury separation or
discoloration.
2. Probe Type (Annual Service). Probe type LWCO
should be removed once a year, examined and
cleaned of any dirt accumulations to assure proper
operations. Do not attempt to repair mechanisms
in the field. Complete replacement mechanisms,
including necessary gaskets and installation
instructions, are available from the manufacturer.
D. Vent System. Inspect for obstructions, soot
accumulation, proper support, and deterioration of pipe,
fittings, and joints.
1. Clean terminal screen. Terminal must be free of
obstruction, undamaged, with screen securely in
place.
DANGER
This boiler uses ammable gas, high voltage electricity, moving parts, and very hot water under high
pressure. Assure that all gas and electric power supplies are off and that the water temperature is cool
before attempting any disassembly or service.
Assure that all gas valves and electrical disconnect switches are off before attempting any disassembly
or service.
Do not attempt any service work if gas is present in the air in the vicinity of the boiler. Never modify,
remove or tamper with any control device.
WARNING
This boiler must only be serviced and repaired by skilled and experienced service technicians.
If any controls are replaced, they must be replaced with identical models.
Read, understand and follow all the instructions and warnings contained in all the sections of this
manual.
If any electrical wires are disconnected during service, clearly label the wires and assure that the wires
are reconnected properly.
Never jump out or bypass any safety or operating control or component of this boiler.
Read, understand and follow all the instructions and warnings contained in ALL of the component
instruction manuals.
Assure that all safety and operating controls and components are operating properly before placing
the boiler back in service.