Nortec NHDI - Manual (Page 9)

PLUMBING
All water supply and drain line connections
should be installed in accordance with local
plumbing codes and should be copper or other
material suitable for potable water at 140ºF (60ºC).
WATER SUPPLY LINE - NHSC
1. The humidifier is intended to operate on
potable water.
2. Standard fill valves are sized for water
pressure ranging from 30 to 80 psig. For other
pressures, consult factory. This pressure
should be measured at the humidifier if the
water pressure is suspect.
3. ALWAYS supply and install a shut off valve in
the fill water supply line dedicated to the
humidifier to facilitate servicing. Use ½" OD
copper to within 4 feet of the humidifier.
Reduce to 3/8" OD and connect to the
factory-supplied 3/8" olive compression fitting
under the humidifier.
4. Same installation as #3, but add Drain Water
Cooler instead of fill.
WATER SUPPLY LINE - NHDI
1. Humidifier is intended to operate on Reverse
Osmosis (RO) water or De-ionized (DI) water
with a water conductivity of less than 20
Microsiemens.
2. Standard fill valves are sized for water
pressure ranging from 30 to 80 psig. For other
pressures, consult factory. This pressure
should be measured at the humidifier if the
water pressure is suspect.
3. ALWAYS supply and install a shut-off valve in
the fill water supply line dedicated to the
humidifier to facilitate servicing. Use ½" OD
plastic or stainless steel to within 4 feet of the
humidifier. Reduce plastic or stainless steel to
3/8" OD and connect to the factory-supplied
3/8" olive compression fitting under the
humidifier.
4. Same installation as #3, but add Drain Water
Cooler instead of fill.
DRAIN LINE - NHSC
1. Humidifier is equipped with a 1.5”" O.D.
unthreaded drain outlet on underside of drain
canal on bottom of the humidifier (see Figure
#11). A field-supplied funnel (see Figure #12)
is recommended. It will prevent backup in the
drain pan and in the cylinder due to partially
blocked or badly installed drain lines. This
prevents rusting of the drain pan.
2. The NHSC scale collector tank is also
equipped with its own drain. It is
recommended to pipe, with a flex hose, the
scale collector tank to allow drainage, if
required while maintaining ease of servicing
(DO NOT HARDPIPE).
3. The drain line should not end in a sink used
frequently by personnel, or where plumbing
codes prohibit it. Route to a floor drain or
equivalent for safety reasons, since drain
water from humidifier can be very hot.
4. Keep drain lines as short as possible. Keep
drain lines sloped down, not level and not
up since low spots in drain lines will
accumulate sediment and cause backup.
The drain line should be 2.0” O.D. copper pipe
or larger. Do not use plastic pipe for drain
lines. Consult factory.
DRAIN LINE - NHDI
1. Humidifier is equipped with a 1.5” O.D.
un-threaded drain outlet on underside of drain
canal on bottom of the humidifier (see Figure
#6). A field-supplied funnel (see Figure #8) is
recommended. It will prevent backup in the
drain pan and in the cylinder due to partially
blocked or badly installed drain lines. This
prevents rusting of the drain pan.
2. The drain line should not end in a sink used
frequently by personnel, or where plumbing
codes prohibit it. If the Drain Water Cooler is
used with potable water then copper may be
used. Route to a floor drain or equivalent for
safety reasons, since drain water from
humidifier can be very hot. Verify with local
codes on DI and RO water. Drains should be
verified for their suitability for RO or DI water
and local codes should be checked.
3. Keep drain lines as short as possible. Keep
drain lines sloped down, not level and not
up since low spots in drain lines will
accumulate sediment and cause backup.
The drain line should be 2.0” O.D. S.S. pipe or
larger. Do not use plastic pipe for drain lines.
Consult factory.
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