EHBH/X16
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05
Installer reference guide
18
6 Preparation
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.
6
Preparation
6.1
Preparing installation site
Do NOT install the unit in places often used as work place. In case of
construction works (e.g. grinding works) where a lot of dust is
created, the unit must be covered.
Choose the installation location with sufficient place for carrying the
unit in and out of the site.
6.1.1 Installation site requirements of the indoor
unit
Q
Mind the measurement guidelines:
Q
Mind the following spacing installation guidelines:
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
P
h
C
e
a
b
c
d
e
A
B
C
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.
Maximum refrigerant piping length between indoor
unit and outdoor unit
75 m
(a)
Minimum refrigerant piping length between indoor
unit and outdoor unit
3 m
(b)
Maximum height difference between indoor unit and
outdoor unit
30 m
Maximum distance between the 3-way valve and
the indoor unit (for installations with domestic hot
water tank)
3 m
Maximum distance between the domestic hot water
tank and the indoor unit (for installations with
domestic hot water tank)
10 m
(a)
Check the outdoor unit installation manual.
(b)
When <5 m, you need to recharge the outdoor unit (check the
outdoor unit installation manual).
≥1
150
200
200
10
10
500
(mm)
Summary of Contents for ERLQ011CA
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