38
Installation
2584597_B_EN_1705
Nortec EL/RS Outdoor
5.7
Electrical Connections
DANGER!
Risk of electric shock!
The
Nortec EL/RS Outdoor humidifier is mains powered. Live parts may be exposed when
the doors are open. Touching live parts may cause severe injury or even death.
Prevention:
All electrical work must only be performed by a licensed electrician. The humidifier
must be connected to the mains only after all installation work has been completed, checked for
correct workmanship, and the doors are closed and fastened securely.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the humidifier are sensitive to electrostatic discharge
(ESD).
Prevention:
Take appropriate measures to protect the electronic components inside the unit against
damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.
– All wiring must be performed by a licensed electrician in accordance with national and local codes.
– Make sure that power supply voltage and current ratings match the requirements shown on the
– All electrical cables MUST enter the side or bottom of the unit through minimum IP54-rated cable
glands (supplied by others) to ensure that the IP54 rating for the unit is maintained. Knockouts are
available on the side and bottom of the unit for routing the cables into the unit – refer to
Note:
Knockouts for the small unit are located on the left side of the unit.
– A NEMA Type 3R (or greater) weatherproof fused disconnect switch (supplied by others) must be
installed external to the unit to permit power interruption for service/maintenance. The fusing must
not exceed the maximum circuit protection indicated on the specification label.
IMPORTANT!
In order to maintain the IP54 rating of the unit, DO NOT mount the disconnect
switch, or any other component, directly on the outdoor enclosure of the unit. Such installations
may permit entry of moisture into the unit and cause heat loss, and will void the warranty.
– The power cable must be connected to the terminal block (X0). Refer to
and
"Outdoor Enclosure Wiring Diagram" on page 40
– Connect the external freeze protection valves (supplied by others) to the humidifier's safety circuit
"External Freeze Protection System" on page 35
– For all other electrical connection details (including low voltage control wiring) refer to the Nortec EL/
RS manuals.
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