Alliance Laundry Systems DT120CSH, Installation Operation & Maintenance

Page: 40 / 172

38
M413620
INSTALLING STEAM SOLENOID
VALVE AND MAKING STEAM INLET
CONNECTIONS
High pressure machines require a (constant) 80 to 100
psig (pounds per square inch gauge) (5.62 to 7.03 kg/sq.
cm) steam service for optimum operation. Low pressure
machines require a (constant) 10 to 15 psig (pounds per
square inch gauge) (.70 to 1.05 kg/sq. cm) steam service
for optimum operation. The following steps outline the
procedure for installing the steam solenoid valve and
connecting the steam service.
a. Install a manual shut-off gate valve in the condensate
return line after the steam trap for each coil.
b. Connect the steam solenoid valve to the related steam
coil inlet connection with nipples, flex hoses, unions,
and tee. See Figures 13, 14, and 15 for typical
installations.
c. Install a gate shut-off valve in the steam supply line.
Connect the shut-off gate valve outlet to the solenoid
steam valve inlet connection. See Figures 13, 14, and
15 for typical installations.
INSTALLING STEAM TRAP AND
MAKING CONDENSATE RETURN
CONNECTIONS
The steam trap must be installed and the coil outlet
connections must be connected to the condensate return
lines. The following steps outline the procedure for
installing the steam trap and connecting the condensate
return lines. See Figures 13, 14, and 15 for typical
installations.
a. Connect a flexible hose to each steam coil outlet.
b. Install a strainer to the ends of each flexible hose.
c. Install a steam trap to each strainer.
IMPORTANT: Steam trap must be installed a
minimum of 10 inches (25.4 cm) below the steam coil
outlet connections.
d. Install a gate shut-off valve to each steam trap.
e. Connect to the condensate return lines.
The flexible steam hoses connecting the
solenoid steam valve to the coil inlets
must have a 125 psig (pounds per square
inch gauge) (8.79 kg/sq. cm) working
pressure. A shut-off gate valve must be
installed upstream from the solenoid
steam valve. This way, steam can be shut
off for maintenance purposes, or in the
event the hose ruptures.
The steam solenoid valve must be
supported so minimum load is exerted on
the steam coil inlet connections.
W065
WARNING
The flexible steam hoses connecting the
coil outlet connections and steam traps
must have a minimum of 125 psig (pounds
per square inch gauge) (8.79 kg/sq. cm.)
working pressure. A shutoff gate valve
must be installed downstream from each
steam trap so the condensate return line
can be isolated in event a steam trap
requires maintenance.
Each steam trap must be supported so
minimum load is exerted on the coil outlet
connection.
W066
WARNING