Bryant 234B - Manual (Page 7)

S E P / 0 2 / 2 0 0 8 / T U E 0 8 : 1 8 UTC TECH PUB
_plied sparingly and only to the male threads of the
Joints. Consult local supplier for type of compound
to he used.
The manual gas shut-off valve should be approxi­
mately 5 feet above the floor. Install the valve so
that the 1/8 " tapping used to connect the pilot gas
supply line is located on the inlet (supply) side*
Noter For LP Gas installations the main manual
shut-off valve is an integral part of the 100% shut­
off safety control mounted on the manifold with the
electric gas control valve.
Where a pilot gas filter is required by local regula­
tions, place filter between manual gas shut-off
valve and pilot valve. See Figure T.
FILTER
PILOT GAS VALVE
FAX Mo. 31 7 240 5662 P.007
BOILER WITH REFRIGERATION SYSTEM
VALVES A a В - OPEN FOR HEATING; CLOse FOR COOLING
VALVES C a □ - CLOSE FOR HEATING; OPEN FOR COOLING
When the boiler is used in connection with a refri­
geration system it must be installed so that the
chilled medium is piped in parallel with the heating
boiler with appropriate valves to prevent the chilled
medium from entering the heating boiler. An example
of such piping is shown above.
When the boiler is connected to heating coils lo­
cated in air handling units where they may be ex­
posed to refrigerated air circulation, The boiler
piping system must be equipped with flow control
valves or other automatic means to prevent gravity
circulation of the boiler water during^^^^'^^^t^
Figure 1
CAUTIOM, - Note: It is recommended that a relief
valve be installed between valve ,A and the boiler
or valve B and the boiler. This relief valve should
preferobty be on the boiler itself. The relief valve
will protect the boiler from expansion pressures
during the-cooling'seasoni-^ - - ■ - ... ...
ELECTRICAL CONNECTIONS
All electrical connections are to be made in accord­
ance with the National Electric Code and local
codes governing such wiring. Field connections are
to be made in accordance with the wiring label
attached to the boiler. These labels are reproduced
in this manual.
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