LG Multi F A2UW14GFA0 Engineering Product Data Book page 314

2. Guideline for each installation process
2) Drain pipe insulation
- Drain pipe should be insulated all connected joints and ends.
Insulation
not required
- Do not use the loose fitting insulation.
3) Drain water leakage test
- Water leakage test should be performed 24 hours later after drain work finishing.
- In the test, only water should be used. Other liquids are unacceptable.
19 _
Heat pump 50Hz/R410A
Insulation Loose fitting
required wrong insulation
Fitting insulation