© 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
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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
An authorized electrician must install these units. 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.
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