6
Nortec EL
Plumbing
Water and Drainage Requirements
1. All water supply and drain connections must be installed to local
plumbing codes.
2. The water supply line should be minimum 1/2 in (12.7 mm) in
diameter, with a shutoff valve and a union fitting.
3. The water supply to the humidifier must be cold potable drinking
water (and not RO or DI water). The conductivity of the water should
be 150-1200 micro-seimens/cm (hardness 0-12 gpg, when Silica
is between 0-4 ppm, 0-3 gpg when Silica is between 4-14 ppm;
Silica content above 14 ppm is not recommended). pH should be
between 7 and 7.5.
4. The water supply should be filtered to 5 μm (optional, but recommend-
ed), surge-free and pressure regulated to 30-80 psig (207-550 kPa).
Water temperature should be 34-104°F (1-40°C).
5. The air gap funnel should be located away from the control cabinet
to keep any rising steam from damaging the electrical components
in the cabinet. The drain piping should have a minimum internal
diameter of 7/8 in (22 mm).
6. The flexible bent hose exiting the humidifier should be connected
to a drain line with a minimum internal diameter of 7/8 in (22 mm)
and secured with clamps.
7. The drain line should be as short as possible, and have a constant
minimum downslope of 1 in/48 in (1.2°) to the funnel without touching
its sides or bottom. Use stainless steel or plastic pipe suitable for
temperatures up to 212°F (100°C).
8. Drain lines from large humidifiers with dual steam cylinders must
empty into separate air gap funnels before connecting to the drain.
Combined drain line minimum 1.5 in (38 mm) I.D.
9. Upon completion of installation, flush the water supply and drain
lines to clear out any debris in the lines. Check the strainer in the
fill valve to ensure it is clear of all debris.
Refer to “Water Connections” in the Installation Manual for other
details.
CAUTION!
Risk of damage to the plastic threads of the fill valve.
Hand-
tighten the NPT adaptor to the fill valve.
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10
11
5
7
6
4
2
1
3
5
4
9
1 Drain canal, 1-3/16 in (30 mm) O.D.
2 Hose clamp (supplied)
3 Flexible bent hose (supplied)
4 Drain line, minimum 7/8 in (22 mm) I.D.
5 Water supply line, minimum 1/2 in (12.7 mm)
6 Adaptor, 3/4 BSPP to 1/2 in NPT (supplied)
7 Inlet, fill valve (3/4 in BSPP plastic threads)
8 Air gap funnel (and optional trap)
9 Shutoff valve
10 Filter, 5 μm (optional, but recommended)
11 Union fitting
Содержание Nortec EL005
Страница 9: ...Notes ...
