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Installation
Plumbing
Figure 6: Water Supply and Drain Connection
Supply water should at 30 to 80 PSIG and be between 150-1200 Microsiemens
(330-670
S optimal range). Consult factory for water conditions outside of this range. Do
not use reverse osmosis or de-ionized water. Supply water should be cold (34-68ºF/1-20ºC).
Install water shut off valve before humidifier to facilitate servicing.
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.
Ensure drain line is adequately sized to provide free and easy draining and that an air gap is
installed as shown. A restricted drain can cause cylinder water to over concentrate and
result in poor operation.
If a drain is not located near the humidifier use a condensate pump rated for hot drain water
such as Nortec’s Part Number 1429527.
1.2 in. (30 mm). OD
un-threaded outlet
with factory supplied
bent hose and clamp.
Always install a water
shut-off valve.
1/8 in. NPT
Use 1/4 in.
compression
fitting to connect
supply line to
unit.
*Pipe and water shut-off valve not supplied by Nortec.
Use 1/2 in. OD copper to within 4 ft (1.2 m) of humidifier
Note:
1 Fill and drain lines
can also be routed
through opening in
back of cabinet.
2 Optional cover
2548313 Is available
to conceal plumbing
connections.
Air gap required. 2 1/2 in. to 7/8 in.
Copper reducer is ideal. (NORTEC option
P/N 2522172) Hose must not
touch the bottom of the funnel.
Min. 7/8 in. OD drain line.
Keep as short as possible.
Slope down to floor
drain or main drain.
All water supply and drain line connections should be installed in accordance with
local plumbing codes.
Drain water is automatically cooled to 140°F (60°C). Drain material must be
rated for this temperature.
For humidifiers installed in some cities including the City of Los Angeles:
A city-approved spring-loaded double ball CHECK VALVE must be installed by
contractor on the potable water inlet to the humidifier. Recommended valve
manufacturer: Watts Regulator, phone number 508-688-1811, Size depending on
supply line 1/4”, 3/8”, or 1/2” NPT inlet and outlet, Model #7.
