About The Units And Options; About The Compressor Unit And Heat Exchanger Unit; System Layout; Preparation - Daikin RKXYQ5T7Y1B Installation And Operation Manual

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(10.1 N·m)
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About the units and options

3.1 About the compressor unit and
heat exchanger unit
The compressor unit and heat exchanger unit are intended for indoor
installation and aimed for air to air heat pump applications.
Specification
Maximum capacity Heating
Cooling
Outside ambient Heating
design temperature
Cooling
Ambient design temperature of compressor
unit and heat exchanger unit
3.2

System layout

NOTICE
Design of the system must not be done at temperatures
below –15°C.
a
c c
VRV DX
b
d
1 In case of VRV DX indoor units
2 In case of VRV DX indoor units combined with an air
handling unit
a Heat exchanger unit
b Compressor unit
c Refrigerant piping
d User interface (dedicated depending on indoor unit type)
VRV DX VRV direct expansion (DX) indoor unit
EKEXV Expansion valve kit
AHU Air handling unit
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
a
2
b
RKXYQ5+RDXYQ5
16 kW
14 kW
–20~15.5°C WB
–5~46°C DB
5~35°C DB
(26°C WB)
1 2
VRV DX VRV DX EKEXV
AHU
d d d
3 About the units and options
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Preparation

4.1

Preparing installation site

4.1.1 Installation site requirements of the
compressor unit
▪ Service space. Mind the following requirements:
a
≥10 ≥10
a Top view
b Front view
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.
4.2

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.
NOTICE
The piping and other pressure-containing parts shall be
suitable for refrigerant. Use phosphoric acid deoxidised
seamless copper for refrigerant.
▪ Foreign materials inside pipes (including oils for fabrication) must
be ≤30 mg/10 m.
4.2.2

Refrigerant piping material

▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping temper grade and thickness:
Outer diameter Temper grade
(Ø)
6.4 mm (1/4") Annealed (O)
9.5 mm (3/8")
12.7 mm (1/2")
15.9 mm (5/8") Annealed (O)
19.1 mm (3/4") Half hard (1/2H)
(a) Depending on the applicable legislation and the unit's
maximum working pressure (see "PS High" on the unit
name plate), larger piping thickness might be required.
b
(mm)
3D098835-1
(a)
Thickness (t)
Ø
≥0.80 mm
t
≥0.99 mm
≥0.80 mm
Installation and operation manual
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