Nortec NHRS 010-090, Installation And Operation Manual

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13 | Installation
Note: • Drain water is very hot, do not drain to public sink.
• Use material suitable for 212ºF (100ºC) for drain and condensate lines.
Plumbing

All water supply and drain line connections should be installed in accordance with local
plumbing codes.

Supply water should have pressure between 30 and 80 psi
g
and have a hardness
between 0 and 12 gr/gal. Various types of supply water may be used: soft water, de-
ionized, reverse osmosis, or potable.

Install water shut-off valve and union before humidifier to facilitate servicing.

The drain line should not end in a sink used frequently by personnel, or where plumbing
codes prohibit. Route to a floor drain or equivalent for safety reasons.

Ensure drain line is adequately sized to provide free and easy draining. Ensure air gap is
installed as shown. A restricted drain can cause the boiling tank to become heavily
concentrated with minerals and may result in poor operation or water backing up at the
air gap.
Figure 7: Water Supply and Drain Connection