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I
NSTALLATION
For installation of the air handling unit, refer to the air handling
unit installation manual.
Never operate the air conditioner with the discharge pipe
thermistor (R3T), suction pipe thermistor (R2T) and pressure
sensors (S1NPH, S1NPL) removed. Such operation may burn
out the compressor.
The equipment is not intended for use in a potentially explosive
atmosphere.
A
CCESSORIES
Thermistor (R1T)
Thermistor (R3T/R2T)
(2.5 m cable)
Insulation sheet
Rubber sheet
Wire to wire splice
Installation and operation
manual
Screw nut
Tie wrap
Capacity setting adaptor
Stopper (closing cup)
Obligatory accessory
Expansion valve kit
Refer to chapter "Valve kit installation" for installation instructions.
Optional accessories
Remote controller
N
AME AND FUNCTION OF PARTS
Parts and components
1
Outdoor unit
2
Control box
3
Air handling unit (field supply)
4
Field piping (field supply)
5
Expansion valve kit
Wiring connections
6
Outdoor unit power supply
7
Control box wiring
(Power supply and communication between control box and
outdoor unit)
8
Air handling unit thermistors
9
Power supply and control wiring for air handling unit and controller
(power supply is separate from the outdoor unit)
10
Air thermistor control for air handling unit
11
Remote controller
Installation and operation manual
88
B
Quantity
1
2
2
2
6
1
Cautions for selection of the air handling unit
9
Select the air handling unit (field supply) according to the technical
data and limitations mentioned in Table 1.
6
Lifetime of the outdoor unit, operation range or operation reliability
8
may be influenced if you neglect these limitations.
1
This control box can only be used in heat pump applications.
EKEQMCB
EKEXV
EKEQMCB
Depending on the heat exchanger, a connectable EKEXV (expansion
1
valve kit) must be selected to these limitations.
Table 1
(See figure 1)
EKEXV
class
50
63
80
100
125
140
200
250
Saturated suction temperature (SST) = 6°C, SH (superheat) = 5 K, air
temperature = 27°C DB / 19°C WB.
EFORE INSTALLATION
Refer to the installation manual of the outdoor unit for details on
refrigerant piping, additional refrigerant charging, and inter-unit
wiring.
Since design pressure is 4 MPa or 40 bar, pipes of larger
wall thickness may be required. Refer to paragraph
"Selection of piping material" on page 90.
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 "Piping installation" on page 89 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 air handling units must have heat exchangers
designed exclusively for R410A.
For maximum number of indoor units, see the
NOTE
outdoor unit specifications.
If the total capacity of the connected indoor units
exceeds the capacity of the outdoor unit, cooling
and heating performance may drop when running
the indoor units.
Refer to the section on performance charac-
teristics in the Engineering Data Book for details.
The capacity class of the air handling unit is
determined by the selection of the expansion
valve kit according to Table 1.
Allowed heat exchanger
3
volume (dm
)
Minimum
Maximum
0.76
1.65
1.66
2.08
2.09
2.64
2.65
3.30
3.31
4.12
4.13
4.62
4.63
6.60
6.61
8.25
Option kit for combination of Daikin condensing units
Allowed heat exchanger
capacity (kW)
Minimum
Maximum
5.0
6.2
6.3
7.8
7.9
9.9
10.0
12.3
12.4
15.4
15.5
17.6
17.7
24.6
24.7
30.8
EKEQMCBV3
with field supplied air handling units
4PW52447-1
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