About The Units And Options; Overview: About The Units And Options; Identification Label: Outdoor Unit; About The Outdoor Unit - Daikin VRV IV+ RYYQ12U7Y1B Series Installer And User Manual

4

About the units and options

4.1 Overview: About the units and
options
This chapter contains information about:
▪ Identification of the outdoor unit
▪ Where the outdoor unit fits in the system layout
▪ With which indoor units and options you can combine the outdoor
units
▪ Which outdoor units have to be used as standalone units, and
which outdoor units can be combined
4.2

Identification label: Outdoor unit

Location
8~12 HP
Model identification
Example: R Y Y Q 18 U7 Y1 B [*]
Code
R Outdoor air cooled
Y Y=Heat pump (continuous heating)
X=Heat pump (no continuous heating)
Y Y=Pair module only
M=Multi module only
Q Refrigerant R410A
18 Capacity class
U7 Model series
Y1 Power supply
B European market
[*] Minor model change indication
(a) For RXYQ, there is no restriction on use as multi module.
4.3

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).
RXYQ8~20 Single non-continuous heating model.
RXYQ22~54 Multi non-continuous heating model
(consisting of 2 or 3 RXYQ modules).
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1 – 2018.09
14~20 HP
Explanation
(a)
Description
4 About the units and options
(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.
U-series units cannot be combined with T-series units.
4.4

System layout

NOTICE
Design of the system must not be done at temperatures
below –15°C.
INFORMATION
Not all combinations of indoor units are allowed, for
guidance, see "4.5.2 Possible combinations of indoor
units" on page 10.
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
4.5

Combining units and options

4.5.1

About combining units and options

NOTICE
To be sure your system setup (outdoor unit+indoor unit(s))
will work, you have to consult the latest technical
engineering data for VRV IV heat pump.
The VRV IV heat pump system can be combined with several types
of indoor units and is intended for R410A use only.
For an overview which units are available you can consult the
product catalogue for VRV IV.
An overview is given indicating the allowed combinations of indoor
units and outdoor units. Not all combinations are allowed. They are
subject to rules (combination between outdoor-indoor, single outdoor
unit use, multiple outdoor unit use, combinations between indoor
units, etc.) mentioned in the technical engineering data.
e c c
f
g g g
h
Installer and user reference guide
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