Select The Best Location - LG Therma V AHUW056A3 Engineering Product Data Book

THERMA V
Split Type
10. Installation
10.1 Alternative Refrigerant R410A
• The refrigerant R410A has the property of higher operating pressure in comparison with R22.
Therefore, all materials have the characteristics of higher resisting pressure than R22 ones and this
characteristic should be also considered during the installation.R410A is an azeotrope of R32 and R125 mixed
at 50:50, so the ozone depletion potential (ODP) of R410A is 0.
CAUTION
• The wall thickness of the piping should comply with the relevant local and national regulations for the
designed pressure 3.8MPa
• Since R410A is a mixed refrigerant, the required additional refrigerant must be charged in its liquid state.
If the refrigerant is charged in its gaseous state, its composition changes and the system will not work
properly.
• Do not place the refrigerant container under the direct rays of the sun to prevent it from exploding.
• For high-pressure refrigerant, any unapproved pipe must not be used.
• Do not heat pipes more than necessary to prevent them from softening.
• Be careful not to install wrongly to minimize economic loss because it is expensive in comparison with
R22.

10.2 Select the Best Location

Select space for installing outdoor unit, which will meet the following conditions:
• No direct thermal radiation from other heat sources
• No possibility of annoying neighbors by noise from unit
• No exposition to strong wind
• With strength which bears weight of unit
• Note that drain flows out of unit when heating (Heat pump model)
• With space for air passage and service work shown next
• Because of the possibility of fire, do not install unit to the space where generation, inflow, stagnation, andleakage
of combustible gas is expected.
• Avoid unit installation in a place where acidic solution and spray (sulfur) are often used.
• Do not use unit under any special environment where oil, steam and sulfuric gas exist.
• It is recommended to fence round the outdoor unit in order to prevent any person or animal from accessing
theoutdoor unit.
• If installation site is area of heavy snowfall, then the following directions should be observed.
– Make the foundation as high as possible.
– Fit a snow protection hood.
• Select installation location considering following conditions to avoid bad condition when additionally
performingdefrost operation. (Heat pump model)
1. Install the outdoor unit at a place well ventilated and having a lot of sunshine in case of installing the product
at a place with a high humidity in winter (near beach, coast, lake, etc).
(Ex) Rooftop where sunshine always shines.
2. Performance of heating will be reduced and pre-heat time of the indoor unit may be lengthened in case
ofinstalling the outdoor unit in winter at following location:
1) Shade position with a narrow space
2) Location with much moisture in neighboring floor.
3) Location with much humidity around.
4) Location where liquid gathers since the floor is not even.
Outdoor unit
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