Appendix; Introduction; General Information; Operating The Unit - Daikin EKHBH008BB3V3 Operation Manual

A
PPENDIX
(for restricted power supply condition mode only)
INFORMATION
All information and settings in the manual are applicable for
this application, except the information and settings
mentioned in this appendix.
NOTICE
Restricted power supply condition mode can only be used
for a tank with built-in electrical booster heater (EKHW*).
3. I
NTRODUCTION

3.1. General information

Heating/cooling units and heating only units
The unit range consists of two main versions: a heating/cooling
(EKHBX) version and a heating only (EKHBH) version.
Both versions are delivered with an integrated backup heater. The
backup heater only serves as a backup in case of malfunctioning of
the outdoor unit. In this application with restricted power supply
condition mode, the backup heater should be considered as
emergency backup heater.
Domestic hot water tank (option)
An optional domestic hot water tank can be connected to the indoor
unit. Only the tank with built-in electrical booster heater (EKHW*) in 3
different sizes: 150, 200 and 300 litre, can be connected to the indoor
unit.
Refer to the domestic hot water tank installation manual for further
details.
EKHBH/X008BB
Indoor unit and options for air to water heat pump system
4PW62571-1A – 05.2011
4. O
PERATING THE UNIT

4.1. Introduction

The heat pump system is designed to provide you a comfortable
indoor climate for many years at low energy consumption.
To get the most comfort with the lowest energy consumption out of
your system, it is very important to observe the items listed below.
Defining possible schedule timer actions for each day and filling out
the form at the very end of this manual can help you minimize the
energy consumption. Ask your installer for support if required.
■
Make sure the heat pump system works at the lowest possible
hot water temperature required to heat your house.
To optimize this, make sure the weather dependent set point is
used and configured to match the installation environment.
Refer to "5. Field settings" on page
■
It is advised to install the room thermostat connected to the
indoor unit. This will prevent excessive space heating and will
stop the outdoor unit and the indoor circulation pump when the
room temperature is above the thermostat set point.
■
Next recommendations only apply to installations with an
optional domestic hot water tank.
■ Make sure the domestic hot water is only heated up to the
domestic hot water temperature you require.
Start with a low domestic hot water temperature set point
(e.g. 45°C), and only increase if you feel that the domestic
hot water supply temperature is not sufficient.
■ Only for tank with built-in electrical booster heater (EKHW*):
Make sure the domestic water heating by booster heater only
start 1 to 2 hours before you expect domestic hot water
usage.
In case you only need a lot of domestic hot water in the
evening or in the morning, only allow domestic water heating
by booster heater during early morning and early evening.
Also keep hours with low electricity cost tariffs in mind.
To do this, program both the domestic water heating and
booster heating schedule timer. Refer to
chapter "4.7. Programming and consulting the schedule
timer" on page 9.
■ If the domestic hot water is not used for two weeks or more, a
quantity of hydrogen gas which is highly flammable may
accumulate in the domestic hot water tank. To dissipate this
gas safely, it is recommended that a hot tap be turned on for
several minutes at a sink, basin, or bath, but not at a
dishwasher, clothes washer or other appliance. During this
procedure there must be no smoking, open flame or any
electrical appliance operating nearby. If hydrogen is
discharged through the tap, it will probably make a sound as
of air escaping.
INFORMATION
For installations with restricted power supply, the indoor
unit allow operation of backup heater only, booster heater
only or outdoor unit only.
Read attentively following information to understand the
unit operation.
13.
Programming in
Operation manual
22