Installation and operation manual
3
EKEXMCBV3
Option kit for combination of Daikin condensing units
with field supplied evaporators
4PW32096-1
2
Selecting the expansion valve
The corresponding expansion valve needs to be selected for
your evaporator. Select the expansion valve according to the
above limitations.
3
Selecting the capacity setting adaptor (see accessories)
■
The corresponding capacity setting adaptor needs to be
selected depending on the expansion valve.
■
Connect the correct selected capacity setting adaptor to
X24A (A1P). (See
For the following items, take special care during
construction and check after installation is finished
S
ELECTING
THE
INSTALLATION
SITE
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.
Select an installation site where the following conditions are fulfilled
and that meets your customer's approval.
■
The option boxes (expansion valve and electrical control box)
can be installed inside and outside).
■
Do not install the option boxes in or on the outdoor unit.
■
Do not put the option boxes in direct sunlight. Direct sunlight will
increase the temperature inside the option boxes and may
reduce its lifetime and influence its operation.
■
Choose a flat and strong mounting surface.
■
Keep the space in front of the boxes free for future maintenance.
■
Keep evaporator (air handling unit), power supply wiring and
transmission wiring at least 1 m away from televisions and
radios. This is to prevent image interference and noise in those
electrical appliances. (Noise may be generated depending on
the conditions under which the electric wave is generated, even
if 1 m is kept.)
Precautions
Do not install or operate the unit in rooms mentioned below.
■
Where mineral oil, like cutting oil is present.
■
Where the air contains high levels of salt such as air near the
ocean.
■
Where sulphurous gas is present such as that in areas of hot
spring.
■
In vehicles or vessels.
■
Where voltage fluctuates a lot such as that in factories.
■
Where high concentration of vapor or spray are present.
■
Where machines generating electromagnetic waves are
present.
■
Where acidic or alkaline vapor is present.
■
The option boxes must be installed with entrances downward.
P
IPING
INSTALLATION
Piping limits
L is to be considered as a part of the total maximum piping length.
See installation manual of the outdoor unit for piping installation.
NOTE
■
If conflicting result, volume selection has
priority over capacity.
■
The expansion valve is an electronic type, it is
controlled by the thermistors that are added in
the circuit. Each expansion valve can control a
range of evaporators (air handling units) sizes.
■
The selected evaporator unit must be
designed for R410A.
■
Extraneous substances (including mineral oils
or moisture) must be prevented from getting
mixed into the system.
■
SST: saturated suction temperature at exit of
evaporator.
EKEXV kit
Capacity
setting adaptor
label
(indication)
EKEXV kit
Capacity
setting adaptor
label
(indication)
50
J56
125
J140
63
J71
140
J160
80
J90
200
J224
100
J112
250
J280
Tick
✓
when
checked
■
Are the thermistors fixed firmly?
Thermistor may come loose.
■
Is the freeze-up setting done correctly?
The evaporator (air handling unit) may freeze up.
■
Is the control box fixed firmly?
The unit may drop, vibrate or make noise.
■
Do electrical connections comply with specifications?
The unit may malfunction or components may burn out.
■
Are wiring and piping correct?
The unit may malfunction or components may burn out.
■
Is the unit safely grounded?
Dangerous at electric leakage.
Compliance to directive 97/23/EEC (Pressure Equipment
Directive): only connect an evaporator of category I or less.
1
Air handling unit
2
Connection pipe from expansion valve kit to air handling unit
3
Valve kit
4
Liquid pipe
5
Gas pipe
Max (m)
A
–5/+5
(*)
(*)
Below or above the valve kit.
L
5
L
A
3
2
1
5
4
