LG THERMA V Installation Manual page 75
Air-to-water heat pump
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Also See for THERMA V:
- Installation manual (201 pages) ,
- Owner's manual (70 pages) ,
- Owner's manual (65 pages)
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Step 3. : Use cable clamps (or cord clamps) to prevent unintended move of Power cable and
Connecting cable.
Step 4. : Reassemble the side panel to the outdoor unit by fastening screws.
Side Panel
Insulation pad
When connecting power cable,
make sure the rubber bushes
are properly attached in
knock-out holes after removing
the Insulation pad.
(For R32 Split)
CAUTION
!
After checking and confirming following conditions, start wiring work.
• Secure dedicated power source for the Air-to-Water heat pump. The wiring diagram
(attached inside the control box of the indoor unit) is presenting related information.
• Provide a circuit breaker switch between power source and the outdoor unit.
• Although it is very rare case, sometimes the screws used to fasten internal wires can be
loosen due to the vibration while product transportation. Check these screws and make it
sure if they are all fastened tightly. If not tightened, burn-out of the wire can be occurred.
• Check the specification of power source such as phase, voltage, frequency, etc.
• Confirm that electrical capacity is sufficient.
• Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
• Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
• Provide an ELB(electric leakage breaker) when the installation place is wet or moist.
• The following troubles would be caused by abnormal voltage supply such as sudden
voltage increasing or voltage drop-down.
- Chattering of a magnetic switch. (frequent on and off operation.)
- Physical damage of parts where magnetic switch is contacted.
- Break of fuse.
- Malfunction of overload protection parts or related control algorithms.
- Failure of compressor start up.
• Ground wire to ground outdoor unit to prevent electrical shock.
PIPING AND WIRING FOR OUTDOOR UNIT
Control Terminal
(Terminal for
Connecting Cable)
Main Power
Terminal
(Terminal for
Power Cable)
Cable Clamp
(or Cord Clamp)
Cable Clamp
(or Cord Clamp)
Water
Outlet
Water
Water
Water
Water
Inlet
Inlet
Inlet
Inlet
75
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