Daikin REYQ12T7Y1B - To Remove the Transportation Stay; 3 About the Units and Options; About the Outdoor Unit; System Layout

3 About the units and options
Installation and operation manual
6
REYQ8~20+REMQ5T7Y1B
VRV IV system air conditioner
4P353996-1E – 2018.04
Accessory pipes (mm) HP Øa Øb
Liquid pipe
▪ Front connection
ID Øb
ID Øa
▪ Bottom connection
ID Øb
ID Øa
5 9.5 9.5
8
10
12 12.7
14 12.7
16
18 15.9
20
High pressure/low pressure
gas pipe
▪ Front connection
ID Øa
ID Øb
▪ Bottom connection
ID Øa
OD Øb
5 19.1 15.9
8
10 19.1
12
14 22.2
16
18
20 28.6
(a) Only in combination with the outdoor unit multi-connection
piping kit.
2.3 To remove the transportation stay
Only for REMQ5 (1×) + REYQ8 (1×) + REYQ14~20 (2×)
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)
2
1
3 (12.3 N·m)
2
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 recovery system.
Model line up:
Model Description
REYQ8~20 Heat recovery model for single or multi-use
Model Description
REMQ5 Heat recovery model for multi-use only
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.
3.2 System layout
NOTICE
Design of the system must not be done at temperatures
below –15°C.
k
e
c
k l
e
e e
f h
b
a
k
l
c c
kkk
j
c
e
i
k
k
c
d
1
3
2
5
4
e
g
c
a Outdoor unit
b Refrigerant piping
c BS unit
d Multi BS unit
e VRV DX indoor unit
f LT Hydrobox unit
g Cooling only VRV indoor unit
h HT Hydrobox unit
i EKEXV kit
j AHU
k User interface
l Wireless user interface