Table of contents
Operation manual
2
D2CND024A1/4AB + D2TND012~024A4AB
Wall-mounted condensing boiler
3P469438-3M – 2019.11
Table of contents
About the unit ............................................................................
About the documentation ..........................................................
Meaning of warnings and symbols..............................
Installation .................................................................................
Smell of gas...............................................................................
Modifications on the unit............................................................
Gas conversion .........................................................................
For the user ...............................................................................
User interface ............................................................................
Buttons and dials ........................................................
LCD screen .................................................................
Status indicator ...........................................................
Operating the unit......................................................................
To switch the unit ON..................................................
About the low water temperature function ..................
About the electronic gas adaptive system calibration .
Basic usage ...............................................................................
About the home screen...............................................
To select the operation mode .....................................
Possible operation modes...........................................
Changing temperature setpoints.................................
Possible central heating operation modes ..................
About the central heating ECO mode .........................
About the domestic hot water operation .....................
About the domestic hot water comfort mode ..............
About the boiler frost protection ..................................
About Energy Metering Function ................................
Error handling ............................................................................
Menu functions ..........................................................................
To use menu level 1....................................................
Info menu ....................................................................
User settings menu .....................................................
Installer settings menu ................................................ 10
To clean the outer surface of the unit........................................
Appliance category and supply pressure ..................................
1
Introduction
DANGER
Following information is only applicable for UK.
If you smell gas:
▪ Away from the building: call the National Gas
Emergency Service on 0800 111 999.
▪ L.P.G. boilers: Call the supplier's number on the side of
the gas tank.
Contact Information
Homeowner Helpdesk: 0845 641 9271
Technical Helpdesk: 0845 641 9277
Daikin UK
1 The Heights
Brooklands / Weybridge / Surrey
KT13 0NY
Tel: 0845 641 9000
1.1
About the unit
This Daikin unit is a wall-mounted gas-fired condensing boiler that
can supply heat to central heating systems, as well as supply
domestic hot water. Depending on settings, it is possible to use the
unit solely for hot water or solely for central heating. Hot water
supply type can be
instantaneous
or by means of a hot water
storage tank
.
Heating only
boilers do not supply domestic hot
water. The type of the boiler can be recognised from the model
name written on the identification label, which is located at the right
cover of the unit. See table below:
Model
Type
Domestic hot water
supply
Filling loop
D2CND024A1AB D2CND024
Instantaneous
Internal
D2CND024A4AB D2CND024
Instantaneous
External
D2TND012A4AB
D2TND012
Storage tank
External
D2TND018A4AB
D2TND018
Storage tank
External
D2TND024A4AB
D2TND024
Storage tank
External
A control unit, which contains a user interface, controls the ignition,
safety systems, and other actuators. User interaction is provided via
that user interface, which is composed of an LCD screen, push
buttons, and two dials, and which is located on the front cover of the
unit.
1.2
About the documentation
The instructions contained in this document are intended to guide
you through the operation of the unit. Damage caused by non-
observance of these instructions are not under the responsibility of
Daikin.
▪ The original documentation is written in English. All other
languages are translations.
▪ The precautions described in this document are written for users
and cover very important topics, follow them carefully.
▪ Please read the instructions in the manual carefully, for your
safety and health.
▪ Please keep this manual for future reference throughout the unit's
period of use.
▪ Request the installer to inform you about the settings that he
made to configure your system.
1.2.1
Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
WARNING
Indicates a situation that could result in death or serious
injury.
CAUTION
Indicates a situation that could result in minor or moderate
injury.
NOTICE
Indicates a situation that could result in equipment or
property damage.