About Control Systems; 17 Energy Saving And Optimum Operation; Available Main Operation Methods; Available Comfort Settings - Daikin VRV IV+ RYYQ12U7Y1B Series Installer And User Manual

17 Energy saving and optimum operation

In case you want to keep the VRV DX indoor unit user interface as
master, contact your installer.
16.6

About control systems

This system provides two other control systems beside individual
control system (one user interface controls one indoor unit). Confirm
the following if your unit is of the following control system type:
Type
Group control system 1 user interface controls up to 16 indoor
units. All indoor units are equally set.
2 user interface control 2 user interfaces control 1 indoor unit (in
system case of group control system, 1 group of
indoor units). The unit is individually
operated.
NOTICE
Contact your dealer in case of changing the combination or
setting of group control and 2 user interface control
systems.
17 Energy saving and optimum
operation
Observe the following precautions to ensure the system operates
properly.
▪ Adjust the air outlet properly and avoid direct air flow to room
inhabitants.
▪ Adjust the room temperature properly for a comfortable
environment. Avoid excessive heating or cooling.
▪ Prevent direct sunlight from entering a room during cooling
operation by using curtains or blinds.
▪ Ventilate often. Extended use requires special attention to
ventilation.
▪ Keep doors and windows closed. If the doors and windows remain
open, air will flow out of your room causing a decrease in the
cooling or heating effect.
▪ Be careful NOT to cool or heat too much. To save energy, keep
the temperature setting at a moderate level.
▪ NEVER place objects near the air inlet or the air outlet of the unit.
Doing so may cause a reduced heating/cooling effect or stop
operation.
▪ Turn off the main power supply switch to the unit when the unit is
not used for longer periods of time. If the switch is on, it consumes
electricity. Before restarting the unit, turn on the main power
supply switch 6 hours before operation to ensure smooth running.
(Refer to "Maintenance" in the indoor unit manual.)
▪ When the display shows
qualified service person
"Maintenance" in the indoor unit manual.)
▪ Keep the indoor unit and user interface at least 1 m away from
televisions, radios, stereos, and other similar equipment. Failing to
do so may cause static or distorted pictures.
▪ Do NOT place items under the indoor unit, as they may be
damaged by water.
▪ Condensation may form if the humidity is above 80% or if the
drain outlet gets blocked.
This heat pump system is equipped with advanced energy saving
functionality. Depending on the priority, emphasises can be put on
energy saving or comfort level. Several parameters can be selected,
resulting in the optimal balance between energy consumption and
comfort for the particular application.
Installer and user reference guide
64
Description
(time to clean the air filter), ask a
to clean the filters. (Refer
Several patterns are available and roughly explained below. Contact
your installer or dealer for advice or to modify the parameters to the
needs of your building.
Detailed information is given for the installer in the installation
manual. He can help you to realize the best balance between energy
consumption and comfort.
17.1

Available main operation methods

Basic
The refrigerant temperature is fixed independent from the situation. It
corresponds to the standard operation which is known and can be
expected from/under previous VRV systems.
Automatic
The refrigerant temperature is set depending on the outdoor ambient
conditions. As such adjusting the refrigerant temperature to match
the required load (which is also related to the outdoor ambient
conditions).
E.g., when your system is operating in cooling, you do not need as
much cooling under low outdoor ambient temperatures (e.g., 25°C)
as under high outdoor ambient temperatures (e.g., 35°C). Using this
idea, the system automatically starts increasing its refrigerant
temperature, automatically reducing the delivered capacity and
increasing the system's efficiency.
Hi-sensible/economic (cooling/heating)
The refrigerant temperature is set higher/lower (cooling/heating)
compared to basic operation. The focus under high sensible mode is
comfort feeling for the customer.
The selection method of indoor units is important and has to be
considered as the available capacity is not the same as under basic
operation.
For details concerning to Hi-sensible applications, please contact
your installer.
17.2

Available comfort settings

For each of above modes a comfort level can be selected. The
comfort level is related to the timing and the effort (energy
consumption) which is put in achieving a certain room temperature
by temporarily changing the refrigerant temperature to different
values in order to achieve requested conditions more quickly.
▪ Powerful
▪ Quick
▪ Mild
▪ Eco
INFORMATION
Combinations of Automatic mode together with Hydrobox
applications should be considered. The effect of the energy
saving function can be very small when low/high (cooling/
to
heating) leaving water temperatures are requested.
18

Maintenance and service

NOTICE
Never inspect or service the unit by yourself. Ask a
qualified service person to perform this work.
WARNING
Never replace a fuse with a fuse of a wrong ampere ratings
or other wires when a fuse blows out. Use of wire or
copper wire may cause the unit to break down or cause a
fire.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1 – 2018.09