DRI-STEEM XT Series Electrode Steam Humidifier Installation, Operation, and Maintenance Manual • Page 9
Important: Thoroughly flush the
supply water piping to remove pipe residue
and stagnant water before connecting
piping to the humidifier. Pipe residue and
stagnant water in the water supply piping
can cause the humidifier to not reach
required steam capacity.
Figure 9-1:
Field piping overview for Models XT-150 and XT-200
OM-7362
Steam vapor hose; may also use tubing or
pipe. See Table 22-1 for maximum piping
lengths. Tubing or pipe must be grounded.
Fill valve (with screen)
Continuous copper
water supply line;
water pressure must
be between 25 psi
and 80 psi (175 kPa
and 550 kPa)
Shock arrester
recommended
to reduce water
hammer, by installer
Install plumb
¾" (DN20) metallic drain piping up
to second drain connection, then
increase pipe to 1¼" (DN32)
1" (25 mm) air gap required
Spill funnel. Plumb to floor drain
Refer to governing codes for drain pipe size and
maximum discharge water temperature. Offset
humidifier from spill funnel to prevent flash steam
from rising into the humidifier.
Adapter
Supply valve, by installer
Hose and clamps
3/8" (DN10) O.D.
copper; compression fitting
on fill valve
Inlet strainer,
by installer
Pitch 1/8”/ft (1%)
towards drain
Supply water piping
Use only copper for supply water piping—do not use rubber or
plastic. A strainer is recommended to be installed in the supply
piping before the fill valve. The fill valve connection size is a 3/8"
(DN10) compression fitting. In cases where water hammer may be a
possibility, consider installing a shock arrestor. Water pressure must
be between 25 psi and 80 psi (175 kPa and 550 kPa).
Supply water and drain piping
(continued)
XT_IOM_Jan_2008.pdf 11 11/19/2009 10:13:34 AM
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