Nortec EL SERIES, Инструкция по установке, эксплуатации и обслуживанию

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Installation Nortec EL/RS Outdoor
2584597_B_EN_1705
Water Supply
To ensure proper functioning of the humidifier in cold climates, the water supply line to the humidifier
MUST be properly trace heated and insulated to prevent freezing. In addition to the freeze protec-
tion valve that is integral to the unit, a normally-open and a normally-closed (NO/NC) valve (or a
3-way normally-closed valve) MUST be installed in the water supply line inside the building. Refer
to
"External Freeze Protection System" on page 35
for details of the valve(s).
IMPORTANT! The warranty does not cover damage to the humidifier due to freezing.
The water supply line to the unit should have a minimum diameter of 1/2 in (13 mm) with a 1/2 in
NPT female end. The line should also have a shutoff valve and a union fitting inside the building for
ease of maintenance.
Refer to the Nortec EL/RS manuals for water quality, filtration, temperature and pressure requirements.
Drainage
The main drain line connected to the unit should have a minimum inner diameter of 7/8 in (22 mm)
for an EL-OC unit, and 1-3/4 in (45 mm) for a RS-OC unit.
All drain lines from the unit should empty into an air gap funnel that is connected to a dedicated
building drain (recommended) with a drainage capacity of at least 2.3 gpm (8.7 L/min) for an EL-OC
unit and 6.7 gpm (30 L/min) for a RS-OC unit – per steam cylinder. All drain lines from the humidifier
can empty into a single air gap funnel. Note: In large units with two steam cylinders, separate air
gap funnels must be used for drain lines from each cylinder.
Some units use a drain pump. Refer to the Nortec EL/RS manuals for drainage rates and pressure
requirements.
The drain line should be capable of handling water temperatures up to 200 °F (93 °C). During normal
operations the maximum temperature of discharge water is 140 °F (60 °C).
In cold climates all drain lines MUST be properly trace heated and insulated to prevent freezing.
IMPORTANT! The warranty does not cover damage to the humidifier due to freezing.
Power Supply
The power supply to the humidifier should be adequate to match the full voltage and current draw
shown on the specification label of the humidifier – refer to Figure 3 on page 9 for location of the label.
The power supply MUST have an external dedicated fused disconnect switch in the immediate
vicinity of the unit. The fusing must not exceed the maximum circuit protection indicated on the
specification label.