Altherma EKHBHE008AA3V3, Operation Manual

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EKHBH/XE008AA3V3
Indoor unit for air to water heat pump system and options
4PW48442-1B
Operation manual
2
O
PERATING THE UNIT
I
NTRODUCTION
The
AD
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 AD 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
"Field settings" on page 11 .
■
It is advised to install a 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 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.
O
PERATING THE DIGITAL CONTROLLER
Operating the EKHB* unit comes down to operating the digital
controller.
Features and functions
The digital controller is a state of the art controller that offers full
control over your installation. It can control a cooling/heating and a
heating only installation.
Both installations are available in multiple versions which vary in
capacity, electrical supply and installed equipment (backup heater in
the indoor unit or a domestic hot water tank with a booster heater).
Simultaneous operation of compressor, backup heater and
booster heater is
NOT possible . Read attentively following
warnings to understand the unit operation.
Emergency backup heater operation always has
priority over compressor or booster heater operation.
Emergency backup heater operation occurs because of:
■
User request to heat up water to the space heating
loops. The temperature of this water is too low and is
out of the operation range (during initial start-up for
example). Refer to
"Initial start-up at low outdoor
ambient temperatures" and "Re-start at low outdoor
ambient temperatures" in the installation manual .
■
During heating operation the water temperature
becomes too low and drops ot of the operation range.
Refer to
"Checking the water volume and expansion
vessel pre-pressure" in the installation manual to
minimize the backup heater operation.
■
Malfunction of the heat pump unit.
If during backup heater operation the heating load is higher
than the heater capacity, the water temperature can not
increase. In this case refer to
"Re-start at low outdoor
ambient temperatures" in the installation manual .
Balance between space heating/cooling demand and
domestic hot water demand
■
Only if the unit is correctly sized then at some point
during space cooling/heating operation the unit will
reach the requested setpoint. When this occurs,
domestic water heating by compressor becomes
possible.
To ensure domestic hot water production, the
schedule timers must be used to disable space
heating/cooling. Refer to the extra addendum of the
operation manual on how to program the schedule
timers.
■
Booster heater operation is only possible when the
compressor of the heatpump is not operating. The
compressor operates because of space
cooling/heating demand or because of domestic
water heating.
To ensure domestic hot water production, the
schedule timers must be used to disable space
heating/cooling. Refer to the extra addendum of the
operation manual on how to program the schedule
timers.
■
If using a room thermostat, domestic water heating by
compressor or by booster heater is
NOT possible as
long as the room thermostat demands cooling or
heating.
In this case de-activate the room thermostat demand
by its schedule timer.
Refer to the manual of the room thermostat for a
detailed explanation how to de-activate space
cooling/heating by schedule timer, or refer to the
separate addendum for an example of the Daikin
room thermostat schedule timer programming.
Never let the digital controller get wet. This may cause an
electric shock or fire.
Never press the buttons of the digital controller with a hard,
pointed object. This may damage the digital controller.
Never inspect or service the digital controller yourself, ask
a qualified service person to do this.
NOTE
■
Descriptions in this manual that apply to a specific
installation or that depend on the installed
equipment, are marked with an asterisk (*).
■
Some functions described in this manual may not
be available or should not be available. Ask your
installer or your local dealer for more information
on permission levels.