Daikin VRV IV+ Installation And Operation Manual page 16

13 Unit installation
Depending on the type of outdoor unit which is chosen, some
functionality will or will not exist. It will be indicated throughout this
installation manual and brought to your attention. Certain features
have exclusive model rights.
These units are intended for outdoor installation and aimed for heat
pump applications including air to air and air to water applications.
These units have (in single use) heating capacities ranging from 25
to 63 kW and cooling capacities rating from 22.4 to 56 kW. In multi
combination the heating capacity can go up till 168 kW and in
cooling till 150 kW.
The outdoor unit is designed to work in heating mode at ambient
temperatures from –20°C WB to 15.5°C WB and in cooling mode at
ambient temperatures from –5°C DB to 43°C DB.
U-series units cannot be combined with T-series units.
12.2 System layout
NOTICE
Design of the system must not be done at temperatures
below –15°C.
a
i
b c d c
g g
a VRV IV Heat pump outdoor unit
b Refrigerant piping
c VRV direct expansion (DX) indoor unit
d VRV LT Hydrobox (HXY080/125)
e BP box (required to connect Residential Air (RA) or Sky Air
(SA) direct expansion (DX) indoor units)
f Residential Air (RA) direct expansion (DX) indoor units)
g User interface (dedicated depending on indoor unit type)
h User interface (wireless, dedicated depending on indoor
unit type)
i Cool/heat changeover remote control switch
13 Unit installation
13.1 Preparing the installation site
13.1.1 Installation site requirements of the
outdoor unit
Mind the spacing guidelines. See the "Technical data" chapter.
CAUTION
Appliance not accessible to the general public, install it in a
secured area, protected from easy access.
This unit, both indoor and outdoor, is suitable for
installation in a commercial
environment.
NOTICE
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.
Installation and operation manual
16
e c c
f
g g g
h
and light industrial
13.1.2 Additional installation site requirements
of the outdoor unit in cold climates
NOTICE
When operating the unit in a low outdoor ambient
temperature with high humidity conditions, make sure to
take precautions to keep the drain holes of the unit free by
using proper equipment.
In heating:
20
15.5
15
10
5
a b
0
–5
–10
–15
–20
10 15 20
T (°C DB)
AI
a Warming up operation range
b Operation range
T Ambient indoor temperature
AI
T Ambient outdoor temperature
AO
If the unit has to operate for 5 days in this area with
high humidity (>90%), Daikin recommends to install the
optional heater tape kit (EKBPH012TA or EKBPH020TA)
to keep the drain holes free.
13.2 Opening the unit
13.2.1 To open the outdoor unit
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
8~12 HP 14~20 HP
14× 14×
Once the front plates open, the electrical component box can be
accessed. See "To open the electrical component box of the outdoor
unit" [ 4 17].
25 27 30
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546220-1C – 2020.10