10.
Cold
water must be supplied with 1/2 inch N.P.T. ,connections to the Y-strainer located at the left rear corner
of the generator. It is recommended that a check valve be placed in this line before the Y-strainer to prevent
back flow. Pressure of the water supply
must
be regulated at 20 to 30 PSI and should be maintained at 25 to
30 PSI. To prevent malfunction or damage caused by water pressures above 30 PSI, install a pressure
reducing valve on the water supply line.
11. This steam generator has both an automatic drain and a manual drain at the rear of the unit. Connect the 1/2
automatic drain pipe and the 3/
4
manual drain pipe to a 1 1/2 IPS (or larger) pipe header. Then extend the
header to a nearby floor drain. GROEN recommends that the header have 2 or less elbows and a length of no
more than 6 feet. A 2" IPS header is recommended for a drain line with more than 2 elbows or a length
greater than 6 feet.
The header drain must have a gravity flow and vent freely to the atmosphere. The drain tine must not be
directly connected to any building drain. Keep a vertical air gap of at least 2" between the generator drain and
the building drain, unless local codes have a different requirement.
CAUTION:
DO NOT LOCATE THE GENERATOR CABINET DIRECTLY OVER A FLOOR DRAIN OR FLOOR
SINK. HUMIDlTY OR WATER FROM A DRAIN WILL
DAMAGE ELECTRICAL PARTS OF THE GENERATOR.
The generator drains discharge
steam
and
hot condensate,
so these
hot discharges must be directed away from the generator cabinet.
GROEN recommends that the floor drain be located to the rear of the
cabinet. .
For instructions on installation of the steam drain, see the separate
steamer manual.
For units made before August 8,1991:
For units made after August 7,1991:
3
