Daikin RXYTQ48TYF [4/36] About the units and options
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Daikin RXYTQ48TYF [4/36] About the units and options

Daikin RXYTQ44TYF [4/36] About the units and options
3 About the units and options
Installation and operation manual
4
RXYTQ8~16T7YF
VRV IV system air conditioner
4P388987-1C – 2016.02
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 (a).
2 Remove the transportation stay (b) as shown in the figure
below.
3 Tighten the fixing nut (a) again.
1
3 (12.3 N·m)3 (12.3 N·m)
2
2
1
a
b
3 About the units and options
3.1 About the outdoor unit
This installation manual concerns the VRV IV, full inverter driven,
heat pump system.
Model line up:
Model Description
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.
3.2 System layout
NOTICE
Design of the system must not be done at temperatures
below –15°C.
e
d
c c
b
f
a
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
4 Preparation
4.1 Preparing installation site
4.1.1 Installation site requirements of the
outdoor unit
Mind the spacing guidelines. See the "Technical data" chapter.
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.
4.1.2 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:
T
AO
(°C WB)
a b
20
15.5
15
10
5
0
–5
–10
–15
–20
10 15 20 25
27
30
T
AI
(°C DB)
a Warming up operation range
b Operation range
T
AI
Ambient indoor temperature
T
AO
Ambient outdoor temperature
4.2 Preparing refrigerant piping
4.2.1 Refrigerant piping requirements
NOTICE
Refrigerant R410A requires strict cautions for keeping the
system clean and dry. Foreign materials (including mineral
oils or moisture) should be prevented from getting mixed
into the system.

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