Daikin ERQ Service Manual page 69

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
EKEQFCB
Expansion valve kit
Refer to chapter "Valve kit installation" on page 61 for installation
instructions.
Optional accessories
Remote controller
(*) Not required for operation, only useful accessory tool for service and installation.
EKEQFCBV3 + EKEQDCBV3
Option kit for combination of Daikin condensing units
with field supplied air handling units
4PW52446-1
EKEQFCB EKEQDCB
— 1
2
2
2
4 6
1
7 8
6
7
2 —
EKEQDCB
EKEXV
EKEQFCB EKEQDCB
(*)
1 1
N
AME AND FUNCTION OF PARTS
figure 2)
Parts and components
1 Outdoor unit
2 Control box (EKEQFCB / EKEQDCB)
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 Air handling unit thermistors
10 Communication between controller and control box
11 Power supply and control wiring for air handling unit and controller
(power supply is separate from the outdoor unit)
12 Air thermistor control for air handling unit
13 Remote controller (
B
EFORE INSTALLATION
Cautions for selection of the air handling unit
See table below for applicable units.
Select the air handling unit (field supply) according to the technical
data and limitations mentioned below.
The design pressure of the air handling unit is at least 40 bar.
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)
Outdoor
unit (class) EKEXV kit
100 EKEXV63~125
125 EKEXV63~140
140 EKEXV80~140
Depending on the heat exchanger, a connectable EKEXV (expansion
valve kit) must be selected to these limitations.
Allowed heat exchanger
3
volume (dm )
EKEXV
class Minimum Maximum
63 1.66 2.08
80 2.09 2.64
100 2.65 3.30
125 3.31 4.12
140 4.13 4.62
200 4.63 6.60
250 6.61 8.25
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 air
handling units.
■ The range is determined by the allowed expansion valve kits.
: http://splitoff.ru/tehn-doc.html
(See figure 1 and
= for service only)
Outdoor
unit (class) EKEXV kit
200 EKEXV100~250
250 EKEXV125~250
Allowed heat exchanger
capacity (kW)
Minimum Maximum
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
Installation and operation manual
59