©2009McQuay
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Power Connection
Laws and regulations concerning electrical wiring work vary by country. Therefore, work should basically
be performed according to the regulations of each country.
Before power connection, make sure that your local power supply type accords with the unit nameplate.
Please use suitable size dedicated wire to power this unit. The connections must be made secured
without tension the terminals.
All electric work must be performed by licensed technician be according to local regulations and the
instructions given in this catalogue.
The unit must be properly earth connected. Do not connect the earth wire to gas pipe, city water pipe or
telephone wire, improper earth connection may cause electrical shock.
Please mount electric leak protection breaker to avoid electric shock.
Please ensure correct phase sequence, make L1, L2, L3 correspond with R, S, T on terminal block
respectively, otherwise the system cannot be started and the controller has no display.
Every wire should be firmly connected without tension to the cables and terminals.
All cables should not contact with refrigerating piping and moveable components such as compressor
and fan motor etc.
Electrical Data
Model MAC060D4 MAC090D4 MAC120D4
Power Supply 208-230V/3~/60Hz
Max. Input (W) 8500 14200 14750
Max. Current (A) 24.9 45.0 45.5
Cross Section Area (mm²) 61010
Power Cable
Q.T.Y 4
Electrical Connection For Auxiliary Electric Heater
If auxiliary electric heater or auxiliary gas heater installation is required, please do installation after
thoroughly reading corresponding manual. Carry out the electrical connection according to the circuit
diagram in unit electrical box so that achieved their automatic on/off governed by the unit controller. In
addition, contact with local McQuay service representative for performing trail startup.
t emergency (if you smell something burning), stop operation and turn the power source switch off,
ask for your dealer’s instruction. Continuing the operation without eliminating the emergency state
may cause a machine trouble, fire, or electrical shock.
Don’t extend your fingers or other foreign pieces such as stick into unit air outlet, otherwise the unit
could be damaged or you could be injured.
Caution
!
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