© Munters AB, 2020 10
3
Unit Installation
The following sections detail how to mount and wire the Trio.
NOTE Munters recommends that a trained technician perform the following operations.
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Preliminary Information
•
Mounting the Unit
•
Layout
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Wiring Diagrams
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Pressure Sensor Hoses
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Key
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Product Symbols
3.1
Preliminary Information
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Safety Precautions
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What Comes in the Package
3.1.1
S
AFETY
P
RECAUTIONS
CAUTION
These units must be installed by an authorized electrician. Disconnect the power to avoid
electrical shock and damage.
NOTE Installation Category (Over voltage Category) II
•
The power supply to the controller should be protected by 1 amps circuit breaker.
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All electrical connections should comply with National Electrical code (NEC).
3.1.1.1
Grounding and Shielded Wiring
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From the ground terminal, run a heavy wire directly to the ground rod. If necessary, run
a heavy ground wire to the electrical service grounding system rather than directly to the
ground rod.
•
Do not use light wires for these ground connections. They must carry heavy lightning currents,
sometimes exceeding thousands of amperes. Certainly, do not use the shielding of sensor and
low voltage wiring for this purpose.
•
When splicing sensors to longer wires, ensure that the splice is waterproof. Use adhesive lined
heat shrink (marine grade) to make waterproof connections.
•
Every low power device (digital, analog, or communication) must have a shield cable
connected to the unit ground strip.
3.1.1.2
Installation and Electrical Connections
•
Install computerized electronic controls at least three feet (one meter) away from interference
sources such as high voltage wiring to motors, variable speed, light dimmers, relays.
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