Steam Requirements - ALLIANCE BA120E Installation Manual

Steam Requirements

This appliance does not contain inherent pressure
relief. A pressure relief valve rated for a maximum of
125 psi shall be provided by the steam source.
NOTE: Steam valve and required adapter are located in
cylinder or lint compartment.
NOTE: Machines require a constant 80 to 100 psig [5.3
to 6.9 bar] steam service for optimum operation. The
maximum allowable steam pressure is 125 psig [8.6
bar]. In no case may the pressure exceed the above
value.
Obtain specific steam service pipe sizes from steam system sup-
plier or a qualified steam fitter.
• Refer to Figure 16 and Figure 17 for proper steam pipe con-
figurations.
• To prevent condensate draining from headers to tumble dryer,
piping should have a minimum 12 inch [300 mm] rise above
respective header. Do not make steam connection to header
with a horizontal or downward facing tee or elbow.
• Whenever possible, horizontal runs of steam lines must drain,
by gravity, to respective steam header. Water pockets, or an
improperly drained steam header will provide wet steam,
causing improper operation of tumble dryer. If pockets or im-
proper drainage cannot be eliminated, install a bypass trap to
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Steam Requirements
WARNING
drain condensate from the low point in the steam header to the
return.
• In both steam supply and steam return line, it is recommended
that each have a pipe union and shut-off valve. This will ena-
ble you to disconnect the steam connections and service the
tumble dryer while your laundry facility is in operation.
• Connect the steam solenoid valve to the related steam coil in-
W942
let connection with nipples, flex hoses, unions and tees.
• Strainers may require cleaning due to materials from hoses or
pipes.
• Install vacuum breaker (optional), bucket trap with built-in
strainer and check valve. For successful operation of tumble
dryer, install trap 18 inches [460 mm] below coil and as near
to the tumble dryer as possible. Inspect trap carefully for inlet
and outlet markings and install according to trap manufactur-
er's instructions. If steam is gravity returned to boiler, omit
trap but install vacuum breaker and check valve in return line
near tumble dryer. Gravity return requires entire return
plumbing be below steam coil outlets.
• Install union and shut-off valve in return line and make final
pipe connections to return header.
NOTE: To prevent water hammering, route return
lines below outlets of steam coils.
NOTE: Steam inlet lines of each dryer should be
trapped to keep line condensation from going into
steam coils.
NOTE: IEC machines are shipped with BSPT adapt-
ers in the lint compartment.
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Steam Requirements
Part No. 70532501ENR7