12 About The Units And Options; About The Outdoor Unit; System Layout; Unit Installation - Daikin VRV IV+ RXYTQ8U5/U7YF Installation And Operation Manual

NOTICE
If the unit is operated with the transportation stay attached,
abnormal vibration or noise may be generated.
The transportation stay installed over the compressor leg for
protecting the unit during transport must be removed. Proceed as
shown in the figure and procedure below.
1 Slightly loosen the fixing nut.
2 Remove the transportation stay as shown in the figure below.
3 Tighten the fixing nut again.
2 2
a Fixing nut
b Transportation stay
12 About the units and options
12.1

About the outdoor unit

This installation manual concerns the VRV IV, full inverter driven,
heat pump system.
Model line up:
Model
RXYTQ8~16 Single non-continuous heating model.
RXYTQ18~48 Multi non-continuous heating model
(consisting of 2 or 3 RXYTQ modules).
These units are intended for outdoor installation and aimed for heat
pump air to air applications.
These units have (in single use) heating capacities ranging from 25
to 50 kW and cooling capacities rating from 22.4 to 45 kW. In multi
combination the heating capacity can go up till 150 kW and in
cooling till 135 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 52°C DB.
Unit weights
Model Total net weight (kg)
RXYTQ8 198
RXYTQ10 234
RXYTQ12 234
RXYTQ14 283
RXYTQ16 283
12.2

System layout

NOTICE
Design of the system must not be done at temperatures
below –15°C.
RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P546223-1C – 2021.11
3 (12.3 N·m) 3 (12.3 N·m)
1 1
a
b
Description
Total gross weight (kg)
211
251
251
300
300

12 About the units and options

a
f
b c c
d
e
a VRV IV Heat pump outdoor unit
b Refrigerant piping
c VRV direct expansion (DX) indoor unit
d User interface (dedicated depending on indoor unit type)
e User interface (wireless, dedicated depending on indoor
unit type)
f Cool/Heat changeover remote control switch
13

Unit installation

13.1

Opening the unit

13.1.1

To open the outdoor unit

DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
8 HP 10~16 HP
14× 14×
Once the front plates open, the electrical component box can be
accessed. See "13.1.2 To open the electrical component box of the
unit" [ 4 13].
outdoor
For service purposes, the pushbuttons on the main PCB need to be
accessed. To access these pushbuttons, the electrical component
box cover does not need to be opened. See
components" [ 4 29].
field setting
13.1.2 To open the electrical component box of
the outdoor unit
NOTICE
Do NOT apply excessive force when opening the
electronic component box cover. Excessive force can
deform the cover, resulting in entering of water to cause
equipment failure.
"16.1.3 To access the
Installation and operation manual
13