Daikin HXY080A8V1BF, Installation And Operation Manual

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125A8V1BF
VRV IV System indoor unit
4P405267-1C – 2021.04
Installation and operation manual
27
11. Operation of the unit
Please read chapter 1 and 2 first before consulting this chapter.
11.1. Introduction
11.1.1. General information
The unit is the indoor part of the air to water/air VRV IV heat pump.
The unit is designed for wall mounted indoor installation and used for
heating/cooling applications. The unit can be combined with (field
supply) floor heating/cooling loops or fan coil units.
A user interface with room thermostat functionality is standard
supplied with this unit to control your installation.
Refer to chapter
"4. About the units and options" on page 5 .
11.2. Quick start-up of the unit
In this chapter the step-by-step procedure is explained for starting up
space cooling/heating.
The more detailed information of how the unit must be operated is
explained in the chapter "11.3. Operating the unit" on page 27 .
The quick start-up offers the user the possibility to start up the system
before reading the entire manual.
11.2.1. Space cooling/heating operation
11.3. Operating the unit
11.3.1. Operating the user interface
The user interface offers full control over your installation. It can
control all heating/cooling applications which vary in capacity,
electrical supply and installed equipment (options). Operating the
HXY080/125 unit comes down to operating the user interface.
WARNING
Before operating the unit, be sure the installation has been
carried out correctly by an installer.
If you feel unsure about the operation, contact your
installer for advice and information.
Confirm the operation mode
(a)
heating or cooling
(a) The operation mode can not be selected on the hydrobox. The hydrobox follows
the operation mode of the master VRV DX Indoor Unit. Refer to outdoor unit
manual for further information

Push the or button
 
Display: 88.8 starts
blinking
Display: " "
 
Set desired room
temperature (e.g. 22°C)
The user interface room
thermostat function is
not active
 
Push the or
button
 
You have "room
temperature based"
control of your system
(user interface room
thermostat is installed)
You have "leaving water
temperature based" control of
your system
(default)

Set desired leaving water
temperature (e.g. 35°C for heating
or 18°C cooling).
If the display is blank, automatic
leaving water temperature is
enabled in heating operation.

Push the button

The LED will light up and the unit
will start.

For further details and advised s ettings, see " Programming" on page 34 ,
"11.3.4. Space cooling operation ( )" on page 29 and "11.3.5. Space heating
operation ( )" on page 29
CAUTION

Do not rinse the unit. This may cause electric shock or
fire.

Do not climb, sit or stand on top of the unit.

Do not place any objects or equipment on the unit top
plate.
INFORMATION
It is advised to use the user interface, which includes room
thermostat function, delivered with the unit.
This will prevent excessive space heating/cooling and will
stop the outdoor and indoor unit when the room
temperature is above the thermostat set point. Based on
the request from the user there is an immediate feedback
to the compressor control which optimizes the
performance.
Refer to the typical application examples in the indoor
installation manual for more details.
WARNING

Never let the user interface get wet. This may cause
an electric shock or fire.

Never press the buttons of the user interface with a
hard, pointed object. This may damage the user
interface.

Never inspect or service the user interface yourself,
ask a qualified service person to do this.

Do not rinse the indoor unit. This may cause electric
shock or fire.

Do not climb, sit or stand on top of the unit.

Do not place any objects or equipment on the unit top
plate.