250B8W1B
Split system air conditioner
4PW25544-1A
Installation manual
2
2. I
NTRODUCTION
2.1.
Combination
The indoor units can be installed in the following range.
■
Always use appropriate indoor units compatible with R410A.
To learn which models of indoor units are compatible with
R410A, refer to the product catalogs.
■
For installation of the indoor unit(s), refer to the installation
manual delivered with the indoor unit(s).
2.2.
Standard supplied accessories
Refer to
2.3.
Optional accessories
This outdoor unit requires the pipe branching kit (optional) when
using a twin, triple or double twin application. Refer to catalogues for
details.
2.4.
Technical and Electrical specifications
Refer to the Engineering Data Book for the complete list of
specifications.
3. M
AIN
COMPONENTS
For main components and function of the main components, refer to
the Engineering Data Book.
4. S
ELECTION
OF
LOCATION
This is a class A product. In a domestic environment this product may
cause radio interference in which case the user may be required to
take adequate measures.
The inverter units should be installed in a location that meets the
following requirements:
1
The foundation is strong enough to support the weight of the unit
and the floor is flat to prevent vibration and noise generation. If
not, the unit may fall over and cause injury.
2
The space around the unit is adequate for servicing and the
minimum space for air inlet and air outlet is available. (Refer to
and choose one of the possibilities).
In case of an installation site where only the sides A+B have
obstacles, the wall heights have no influence on any indicated
service space dimensions.
3
Make sure to provide for adequate measures in order to prevent
that the outdoor unit be used as a shelter by small animals.
Small animals making contact with electrical parts can cause
malfunctions, smoke or fire. Please instruct the customer to
keep the area around the unit clean.
4
There is no danger of fire due to leakage of inflammable gas.
5
Ensure that water cannot cause any damage to the location in
case it drips out the unit (e.g. in case of a blocked drain pipe).
6
The piping length between the outdoor unit and the indoor unit
may not exceed the allowable piping length.
7
Select the location of the unit in such a way that neither the
discharged air nor the sound generated by the unit disturb
anyone.
8
Make sure that the air inlet and outlet of the unit are not
positioned towards the main wind direction. Frontal wind will
disturb the operation of the unit. If necessary, use a windscreen
to block the wind.
9
Do not install or operate the unit on locations where air contains
high levels of salt, like e.g. in the vicinity of oceans.
10
During installation, avoid the possibility that children can mount
on the unit or place any object on the unit.
Falling or tumble may result in injury.
Precautions for R410A
■
The refrigerant requires strict cautions for keeping the
system clean, dry and tight.
-
Clean and dry
Foreign materials (including mineral oils or
moisture) should be prevented from getting mixed
into the system.
-
Tight
Read
"7.6. Precautions on refrigerant piping" on
carefully and follow these procedures
correctly.
■
Since R410A is a mixed refrigerant, the required
additional refrigerant must be charged in its liquid
state. (If the refrigerant is in state of gas, its
composition changes and the system will not work
properly).
■
The connected indoor units must be indoor units
designed exclusively for R410A.
"7. Refrigerant piping" on page 4
these procedures correctly.
Since design pressure is 4.0 MPa or 40 bar, pipes of larger
wall thickness may be required. Refer to paragraph
"7.1. Selection of piping material" on page 4
RZQ200
RZQ250
Gas line piping (1)
1
1
Gas line piping (2)
1
1
Gas line piping (3)
1
1
Installation manual
1
1
Additional refrigerant charge label
1
1
Auxiliary pipe
—
1
1
Installation manual
2
Accessory pipes
This unit, both indoor and outdoor, is suitable for
installation in a commercial and light industrial
environment. If installed as a house-hold appliance it could
cause electromagnetic inteference.
■
Make sure to provide for adequate measures in order
to prevent that the outdoor unit be used as a shelter
by small animals.
■
Small animals making contact with electrical parts can
cause malfunctions, smoke or fire. Please instruct the
customer to keep the area around the unit clean.
A B C D
Sides along the installation site with obstacles
Suction side
