Installer reference guide
17
EHVH/X16
Daikin Altherma - Low Temperature Split
4P313777-1 – 2012.05
5 Application guidelines
Setup
Q
Demand PCB (option EKRP1AHTA) needed.
Q
Maximum four digital inputs are used to activate the
corresponding power limitation level:
Q
DI1 = strongest limitation (lowest energy consumption)
Q
DI4 = weakest limitation (highest energy consumption)
Q
For the specification and the connection of the digital inputs, see
technical data > wiring diagram.
Configuration
Set the power consumption control settings in [A.7.2] via the user
interface (for the description of all settings, see configuration
chapter):
Q
Select activation by digital inputs.
Q
Select the type of limitation (power in kW or current in A).
Q
Set the desired power limitation level corresponding to each
digital input.
5.6.3 Power limitation process
The outdoor unit has better efficiency than the electrical heaters.
Therefore, the electrical heaters are limited and turned OFF first. The
system limits power consumption in the following order:
1
Limits certain electrical heaters.
2
Turns OFF all electrical heaters.
3
Limits the outdoor unit
4
Turns OFF the outdoor unit.
Example
If the configuration is as follows:
Q
Power limitation level does NOT allow operation of both booster
heater and backup heater (step 1 and step 2).
Q
Heater priority = Booster heater.
Then power consumption is limited as follows:
5.7
Setting up an external temperature sensor
You can connect one external temperature sensor. It can measure
the indoor or outdoor ambient temperature. Daikin recommends to
use an external temperature sensor in the following cases:
Indoor ambient temperature
Q
In room thermostat control, the user interface is used as room
thermostat and it measures the indoor ambient temperature.
Therefore, the user interface must be installed on a location:
Q
Where the average temperature in the room can be
detected
Q
That is NOT exposed to direct sunlight
Q
That is NOT near a heat source
Q
That is NOT affected by outside air or air draught because
of, for example, door opening/closing
Q
If this is NOT possible, Daikin recommends to connect a remote
indoor sensor (option KRCS01-1).
Q
Setup: For installation instructions, see the installation manual of
the remote outdoor sensor.
Q
Configuration: Select room sensor [A.2.2.B].
Outdoor ambient temperature
Q
In the outdoor unit, the outdoor ambient temperature is
measured. Therefore, the outdoor unit must be installed on a
location:
Q
At the north side of the house or at the side of the house
where the most heat emitters are located
Q
That is NOT exposed to direct sunlight
Q
If this is NOT possible, Daikin recommends to connect a remote
outdoor sensor (option EKRSCA1).
Q
Setup: For installation instructions, see the installation manual of
the remote outdoor sensor.
Q
Configuration: Select outdoor sensor [A.2.2.B].
Q
During suspend (see configuration), the outdoor unit is turned
down to reduce the standby energy losses. As a result, the
outdoor ambient temperature is NOT read out.
Q
If the desired leaving water temperature is weather dependent,
the full time outdoor temperature measurement is important.
This is another reason to install the optional outdoor ambient
temperature sensor.
P
i
Power input
t
Time
DI
Digital inputs (power limitation levels)
a
Power limitation active
b
Actual power input
If… has priority
Then set the heater priority
via the user interface to…
Domestic hot water production Booster heater.
Result: The backup heater will
be turned OFF first.
Space heating
Backup heater.
Result: The booster heater will
be turned OFF first.
P
i
t
DI1
DI3
DI4
a
b
P
h
Produced heat
C
e
Consumed energy
A
Outdoor unit
B
Booster heater
C
Backup heater
a
Limited outdoor unit operation
b
Full outdoor unit operation
c
Booster heater turned ON
d
Backup heater step 1 turned ON
e
Backup heater step 2 turned ON
INFORMATION
The external outdoor ambient sensor data (either averaged
or instantaneous) is used in the weather-dependent control
curves and in the automatic heating/cooling changeover
logic. To protect the outdoor unit, the internal sensor of the
outdoor unit is always used.
P
h
C
e
a
b
c
d
e
A
B
C
Содержание EHVH16S18CA
Страница 84: ...4P313777 1 2012 05 Copyright 2012 Daikin ...
