5 Preparation
Installer and user reference guide
11
RWEYQ8~1 RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1 – 2017.04
RWEYQ18 = 10
RWEYQ20 = R 10
RWEYQ22 = R 12
RWEYQ24 = R 12
RWEYQ26 = R 14
RWEYQ28 = R 14
RWEYQ30 = R10 + 10
RWEYQ32 = R10 + 12
RWEYQ34 = R 12 + 12
RWEYQ36 = R 12 + 12
RWEYQ38 = R 12 + 14
RWEYQ40 = R 14 + 14
RWEYQ42 = R 14 + 14
4.5.4
Possible options for the outdoor unit
INFORMATION
Refer to the technical engineering data for the latest option
names.
Refrigerant branching kit
In case of heat pump system
Description
Model name
Refnet header
KHRQ22M29H
KHRQ22M64H
KHRQ22M75H
Refnet joint
KHRQ22M20T
KHRQ22M29T9
KHRQ22M64T
KHRQ22M75T
In case of heat recovery system
Description
Model name
Refnet header
KHRQ23M29H
KHRQ23M64H
KHRQ23M75H
Refnet joint
KHRQ23M20T
KHRQ23M29T9
KHRQ23M64T
KHRQ23M75T
Outdoor multi connection piping kit
In case of heat pump system
Number of outdoor units
Model name
2
BHFQ22P1007
3
BHFQ22P1517
In case of heat recovery system
Number of outdoor units
Model name
2
BHFQ23P907
3
BHFQ23P1357
Cool/heat selector
In order to control the cooling or heating operation from a central
location, the following option can be connected:
Description
Model name
Cool/heat changeover switch
KRC19-26A
Cool/heat changeover PCB
BRP2A81
Description
Model name
With optional fixing box for the
switch
KJB111A
INFORMATION
The cool/heat selector can only be used when the
refrigerant system is configured as heat pump system.
External control adaptor (DTA104A61/62)
To instruct specific operation with an external input coming from a
central control the external control adaptor can be used. Instructions
(group or individual) can be instructed for low noise operation and
power consumption limitation operation.
PC configurator cable (EKPCCAB)
You can make several commissioning field settings through a
personal computer interface. For this option EKPCCAB is required
which is a dedicated cable to communicate with the outdoor unit.
The
user
interface
software
is
available
on
www.daikineurope.com/support-and-manuals/software-downloads/
.
5
Preparation
5.1
Overview: Preparation
This chapter describes what you have to do and know before going
on-site.
It contains information about:
▪ Preparing the installation site
▪ Preparing the refrigerant piping
▪ Preparing the water piping
▪ Preparing the electrical wiring
5.2
Preparing installation site
5.2.1
Installation site requirements of the
outdoor unit
▪ Provide sufficient space around the unit for servicing and air
circulation.
▪ Make sure the installation site withstands the unit's weight and
vibration.
▪ Make sure the area is well ventilated. Do NOT block any
ventilation openings.
▪ Make sure the unit is level.
▪ Make sure to install the unit in a machine room that is free of
moisture. The unit is designed for indoor use only.
▪ Select the location of the unit in such a way that the sound
generated by the unit does not disturb anyone, and the location is
selected according the applicable legislation.
Do NOT install the unit in the following places:
▪ In potentially explosive atmospheres.
▪ In places where there is machinery that emits electromagnetic
waves. Electromagnetic waves may disturb the control system,
and cause malfunction of the equipment.
▪ In places where there is a risk of fire due to the leakage of
flammable gases (example: thinner or gasoline), carbon fibre,
ignitable dust.
▪ In places where corrosive gas (example: sulphurous acid gas) is
produced. Corrosion of copper pipes or soldered parts may cause
the refrigerant to leak.