Granby Cast Iron Boiler Series, Инструкция по установке, эксплуатации и обслуживанию

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STEP 8: CONTROL MOUNTING
Upon completion of the jacket assembly the operating control can be mounted on the side
of the boiler where the sensor wire was installed. The jacket side panels have been pre-
drilled holes for mounting the control. Follow the mounting instructions and use the hardware
provided with the control.
Three section boiler illustrated
The boiler is now ready for piping and connection to the fuel system, heating and
domestic hot water, thermostat and 120 Volt 60 cycle AC current.
CAUTION
: Safety relief valve discharge should be piped downward to within 6” of
the floor or to a drain. The valve must be mounted in a vertical position.
4.0 PIPING
Prior to connecting the boiler to an existing piping system, certain procedures must be followed.
The system must be flushed to ensure that scale and sludge will not be introduced to the boiler.
This is a must when replacing a boiler in what was once an open gravity system.
The Conforto boiler is a low mass boiler with low water content and steps must be taken to
ensure that the boiler is not inundated with cold return water from an existing high-volume
standing cast iron system. If the boiler is installed in a high-volume system a bypass loop must
be installed.
Manual shut off valves must be installed on both the supply line and on the boiler bypass loop.
Bypass loop piping MUST be the same size as the supply and return piping. ASME Boiler Code
requires that feed or make-up water be introduced to the piping system and not directly into the
boiler. Pressure reducing valve should be installed and adjusted to 12 psi cold water. The
pressure relief valve must be piped from the boiler and downward to within 6” of the floor or to a
height to meet existing code. An expansion tank, circulating pump and automatic air eliminators
must be part of the system. The relief valve, backflow preventer and drain valve should be piped
to a drain with piping that is the same size as the relief valve outlet, according to code.
All piping, including heating, domestic hot water and fuel lines must be done in accordance with
all local codes. It is suggested that you refer to the Water Installation Survey and Hydronic
Institute Residential Hydronic Heating Installation/Design Guide. All piping must be properly
sized, free from defect and be made of copper, steel, brass, aluminum or PEX.