Nortec MES2 User Manual download pdf (Page 18)

15 | Installation

Plumbing

Figure 11: Water Supply and Drain Connection

 All water supply and drain line connections should be installed in accordance with local

plumbing codes.

 Supply water is recommended at 30 to 80 PSIG and 150-1200 Microsiemens (Hardness 0-

12 GPG). Consult factory for water conditions outside of this range. 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 P/N 1429527.



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, Size 3/8” inlet and outlet, Model #7.

 Each drain line from the humidifier must be routed, without dips or sags, to

terminate above the flood level rim of a city approved indirect waste receptor.

0.875 in. (22 mm). OD

un-threaded outlet

Always install a water

shut-off valve.

1/8 in. NPT

fill connection.

ir gap recommended.

1 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.

Ensure adequate slope to

handle flow.

Use 1/2 in. OD coppe

to within 4 ft (1.2 m) o

humidifie

*Elbows, pipe, water shut-off valve, and air gap reducer not supplied by Nortec.

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Nortec MES2 User Manual Page 18