About The Outdoor Unit; System Layout - Daikin VRV IV+ Installer And User Reference Manual

4.3 About the outdoor unit

4.4 System layout

RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1A – 2019.10
This installation manual concerns the VRV IV, full inverter driven, heat pump
system.
Model line up:
Model
(a)
RYYQ8~20
(a)
RYYQ22~54
RXYQ8~20
RXYQ22~54
(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.
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
combinations of indoor
a
i
b c
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)
4
Single continuous heating model.
Multi continuous heating model (consisting of 2 or 3
RYMQ modules).
Single non-continuous heating model.
Multi non-continuous heating model (consisting of 2
or 3 RXYQ modules).
4
units" [ 22].
d c e c
f
g g
h
About the units and options
|
Description
c
g g
Installer and user reference guide
"4.5.2 Possible
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