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PIPING INSTRUCTIONS SPECIFIC TO GASFIRED BOILERS
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A hot water boiler installed above radiation level or as required by the authority
having jurisdiction, must be provided with a low water cut off device either as part
of the boiler or at the time of boiler installation.
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The boiler shall be installed in such a way that the gas ignition system components
are protected from water (dripping, spraying, etc.) during appliance operation and
service (circulator replacement, condensate trap, control replacement, etc.).
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The boiler, when used in conjunction with a refrigeration system, must be installed
so the chilled medium is piped in parallel with the boiler with appropriate valves to
prevent the chilled medium from entering the boiler.
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The boiler piping system of a hot water boiler connected to the heating coils
located in air handling units where they may be exposed to refrigerated air
circulation must be equipped with flow control valves or other automatic means to
prevent gravity circulation of the boiler water during the cooling cycle
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5.0 ELECTRICAL WIRING
All external wiring must be performed in compliance with existing electrical codes within the
local jurisdiction. In Canada the CSA, STANDARD C22-1 and the Canadian Electrical Code.
Only qualified individuals should carry out electrical connections in accordance with this
manual and;
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The boiler and burner should only be operated on 120 Vac – 60Hz.
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Field connections should be properly sized and protected with a minimum 15-amp fuse or
circuit breaker.
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A separate fused disconnect must be installed as required by code so that power can be
shut off for servicing.
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The boiler must be bounded to the water piping or the main service ground.
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If an external electrical source is utilized, the boiler, when installed, must be
electrically bounded to ground in accordance with the requirement of the
authority having jurisdiction, or in the absence of such requirement, with the