EKEX EKEXDCBAV3
Option kit for combination of Daikin condensing units
with field supplied evaporators
4PW30903-1
Installation and operation manual
2
N
AME
AND
FUNCTION
OF
PARTS
(See
figure 1
and
figure 2
)
B
EFORE
INSTALLATION
Cautions for selection of the evaporator (air handling unit)
See table below for applicable units.
Select the evaporator (field supply) according to the technical data
and limitations mentioned below.
Lifetime of the outdoor unit, operation range or operation reliability
may be influenced if you neglect these limitations.
Limits for outdoor unit (expansion valve kit)
Depending on the heat exchanger, a connectable EKEXV (expansion
valve kit) must be selected to these limitations.
Saturated suction temperature (SST) = 6°C, SH (superheat) = 5 K,
air temperature = 27°C DB / 19°C WB.
1
Selecting the condensing unit
Depending on necessary capacity of the combination an
outdoor unit needs to be selected (see "Engineering databook"
for capacity).
■
Each outdoor unit can be connected to a range of
evaporators (air handling units).
■
The range is determined by the allowed expansion valve kits.
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
figure 4
and
figure 6
)
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.
Parts and components
1
Outdoor unit
2
Control box (EKEXFCB / EKEXDCB)
3
Air handling unit (field supply)
4
Controller (field supply)
5
Field piping (field supply)
6
Expansion valve kit
Wiring connections
7
Outdoor unit power supply
8
Control box wiring
(Power supply and communication between control box and
outdoor unit)
9
Evaporator thermistors
10
Communication between controller and control box
11
Power supply and control wiring for evarporator (air handling unit)
and controller (power supply is separate from the outdoor unit)
12
Air thermistor control for evaporator (air handling unit)
13
Remote controller (
= for service only)
Outdoor
unit (class)
EKEXV kit
Outdoor
unit (class)
EKEXV kit
100
EKEXV63~125
200
EKEXV100~250
125
EKEXV63~140
250
EKEXV125~250
140
EKEXV80~140
EKEXV
class
Allowed heat exchanger
volume (dm
3
)
Allowed heat exchanger
capacity (kW)
Minimum
Maximum
Minimum
Maximum
63
0.96
1.22
6.4
7.8
80
1.22
1.53
8.1
9.9
100
1.53
1.91
10.1
12.3
125
1.91
2.14
12.6
15.4
140
2.14
2.67
14.4
17.6
200
3.06
3.82
20.2
24.6
250
3.82
4.78
25.2
30.8
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)
63
J71
140
J160
80
J90
200
J224
100
J112
250
J280
125
J140
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.
