Operation Of The Unit; Introduction; General Information; Quick Start-Up Of The Unit - Daikin VRV IV HXY080A8V1B Installation And Operation Manual

11. Operation of the unit

Please read chapter 1 and 2 first before consulting this chapter.
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.

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

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
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

Confirm the operation mode
heating
Push the
Display: 88.8 starts
blinking
Set desired room
temperature (e.g. 22°C)
Push the
button
You have "room
temperature based"
control of your system
(user interface room
thermostat is installed)
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
The LED will light up and the unit
will start.
For further details and advised settings, see
"11.3.4. Space cooling operation ( )" on page 29
operation ( )" on page 29
(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
HXY080+125A8V1B
VRV IV System indoor unit
4P405267-1B – 2016.02
5.
27.
(a)
or cooling
or button
Display: " "
The user interface room
thermostat function is
not active
or
You have "leaving water
temperature based" control of
your system
(default)
button
" Programming" on page
and "11.3.5. Space heating

11.3. Operating the unit

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.

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.
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
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.
34,
compressor control which
Installation and operation manual
optimizes the
27