To Remove The Transportation Stay; About The Units And Options; About The Outdoor Unit; System Layout - Daikin VRV IV RYYQ10T7Y1B Series Installation And Operation Manual

3 About the units and options

Accessory pipes (mm)
Liquid pipe
▪ Front connection
ID Øb
ID Øa
▪ Bottom connection
ID Øb
ID Øa
(a)
Equaliser pipe
▪ Front connection
ID Øa
ID Øb
▪ Bottom connection
ID Øa
OD Øb
(a) Only for RYMQ models.
2.3

To remove the transportation stay

Only for 14~20 HP
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.
2 2
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
(a)
RYYQ8~20 Single continuous heating model.
(a)
RYYQ22~54 Multi continuous heating model (consisting
of 2 or 3 RYMQ modules).
Installation and operation manual
6
HP Øa Øb
8 9.5
10
12 9.5 12.7
14 12.7
16
18 12.7 15.9
20
8 19.1
10
12 19.1 22.2
14
16
18 25.4 28.6
20
3 (12.3 N·m) 3 (12.3 N·m)
1 1
a
b
Description
Model
RXYQ8~20 Single non-continuous heating model.
RXYQ22~54 Multi non-continuous heating model
(consisting of 2 or 3 RXYQ modules).
(a) The RYYQ models provide continuous comfort during
defrost operation.
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

INFORMATION
When using FXTQ indoor units, different requirements
apply. See "4.2.4 Requirements in case of FXTQ indoor
units" on page 9.
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
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.
Description
e c c
f
g g g
h
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV system air conditioner
4P370473-1C – 2016.07