8
ENGLISH
• The wall thickness of the piping should comply with the relevant
local and national regulations for the designed pressure 3.8 MPa
• 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.
CAUTION
!
[Unit : mm]
WARNING
Fix the outdoor unit firmly with anchor bolt or it may fall and hurt
people. (refer to ‘Foundation for installation’)
!
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
• 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, and leakage 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 the outdoor unit.
• If heavy snowfall occurs in the installation area, below direction
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 performing defrost operation.
• 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.
• Performance of heating will be reduced and preheat time of the
indoor unit may be lengthened in case of installing the outdoor unit in
winter at following location:
- Shade position with a narrow space
- Location with much moisture in neighboring floor.
- Location with much humidity around.
- Location where ventilation is good. It is recommended to install the
outdoor unit at a place with a lot of sunshine as possible as.
- Location where water gathers since the floor is not even.
[Unit : mm]
Turn the air outlet side toward the
building's wall, fence or windbreak screen.
- U60A
- U36A
When installing the outdoor unit in a place that is constantly exposed to a
strong wind like a coast or on a high story of a building, secure a normal
fan operation by using a duct or a wind shield.
• Install the unit so that its discharge port faces to the wall of the
building.
Keep a distance 500 mm or more between the unit and the wall
surface.
• Supposing the wind direction during the operation season of the air
conditioner, install the unit so that the discharge port is set at right
angle to the wind direction.
ALTERNATIVE REFRIGERANT
R410A, R32
The refrigerant R410A, R32 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.
The ozone depletion potential (ODP) of R32 is 0.
To Next Page
Loading...
Need help?
General
