Neptronic CMU Series, Спецификация и инструкции по установке

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Compact Make-up Air Unit
Specification and Installation Instructions
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Electrical Installation
•
DANGER: Risk of electric shock . Disconnect all electrical supplies before working on any circuit.
•
CAUTION: Risk of malfunction . Use only copper wires suitable for
221˚F (105˚C).
•
CAUTION : Electric installation must be done by qualified electrician and must conform to local electrical code.
•
CAUTION : If a disconnect switch has not been supplied with control panel of the unit, an external disconnect
switch must be installed on the supply.
•
CAUTION : Gauge of electric supply wires must be of appropriate section, function of line current, as per local
electrical code.
Power Supply Wiring
See the name plate for information for voltage and current.
•
Connect all wires to appropriate terminals as per the electrical diagram affixed inside the control panel door.
•
Correct connection and proper tightening must be verified before start-up, and after a short period of operation (typically after 2
weeks).
To quickly calculate the amperage, use the following formulas:
•
Single phase: Amperage = Watts / Voltage.
ex.: 10 kW at 240V/1 is equal to: 10,000 / 240 = 41.7A
•
Three phases: Amperage = Watts / (1.732 x Voltage).
ex.: 20 kW at 600V/3 is equal to: 20,000 / (1.732 x 600) = 19.2A
Electrical Diagram Legend
Thermal cut-out
automatic reset
or
Normally open
contact Single phase power supply
terminals
Thermal cut-out
Manual reset
Disconnect switch
3 phases power supply
terminals
Contactor coil Heating element Ground terminal
Back-up safety
contactor coil
Transformer Common
Normally closed
contact
Fuse Light
or