8 Configuration
Installer reference guide
59
ERHQ+ERLQ011~016 + 16CBV
Daikin Altherma – Low temperature split
4P449970-1 – 2016.06
#
Code
Description
[A.3.1.1.5]
[8-05]
Modulated LWT:
▪ No (default): disabled.
Note:
The desired leaving water
temperature needs to be set on the
user interface.
▪ Yes: enabled. The leaving water
temperature is calculated according
to the difference between the desired
and the actual room temperature.
This creates a better match between
the capacity of the heat pump and
the actual required capacity, and
results in less start/stop cycles and a
more economic operation.
Note:
The desired leaving water
temperature can only be read out on
the user interface
N/A
[8-06]
Leaving water temperature maximum
modulation:
0°C~10°C (default: 3°C)
Requires modulation to be enabled.
This is the value by which the desired
leaving water temperature is increased
or lowered.
INFORMATION
When leaving water temperature modulation is enabled,
the weather‑dependent curve needs to be set to a higher
position than [8-06] plus the minimum leaving water
temperature setpoint required to reach a stable condition
on the comfort setpoint for the room. To increase
efficiency, modulation can lower the leaving water setpoint.
By setting the weather‑dependent curve to a higher
position, it cannot drop below the minimum setpoint. Refer
to the illustration below.
a
+[8-06]
−[8-06]
b
Ta
Tt
a
Weather-dependent curve
b
Minimum leaving water temperature setpoint required to
reach a stable condition on the comfort setpoint for the
room.
Leaving water temperature: Emitter type
Only applicable in case of room thermostat control. Depending on
the system water volume and the heat emitters type, the heat up of a
space can take longer. This setting can compensate for a slow or a
quick heating system during the heat up cycle.
Note:
The setting of the emitter type will influence the maximum
modulation of the desired leaving water temperature.
Therefore it is important to set this correctly.
#
Code
Description
[A.3.1.1.7]
[9-0B]
Emitter type:
Reaction time of the system:
▪ Quick
Example:
Small water volume
and fan coils.
▪ Slow
Example:
Large water volume,
floor heating loops.
8.2.6
Domestic hot water control
Only applicable in case an optional domestic hot water tank is
installed.
Configuring the desired tank temperature
The domestic hot water can be prepared in 3 different ways. They
differ from each other by the way the desired tank temperature is set
and how the unit acts upon it.
#
Code
Description
[A.4.1]
[6-0D]
Domestic hot water Type:
▪ 0 (Reheat only): Only reheat operation
is allowed.
▪ 1 ( sched.): The domestic hot
water tank is heated according to a
schedule and between the scheduled
heatup cycles, reheat operation is
allowed.
▪ 2 (Scheduled only): The domestic hot
water tank can ONLY be heated
according to a schedule.
See
"8.3.2 Domestic hot water control: advanced" on page 63
for
more details.
INFORMATION
There is a risk of space heating capacity shortage/comfort
problem (in case of frequent domestic hot water operation,
frequent and long space heating interruption will happen)
when selecting [6‑0D]=0 ([A.4.1] Domestic hot water
Type=Reheat only).
Maximum DHW temperature setpoint
The maximum temperature that users can select for the domestic
hot water. You can use this setting to limit the temperatures at the
hot water taps.
INFORMATION
During disinfection of the domestic hot water tank, the
DHW temperature can exceed this maximum temperature.
INFORMATION
Limit the maximum hot water temperature according to the
applicable legislation.
#
Code
Description
[A.4.5]
[6-0E]
Maximum setpoint
The maximum temperature that users
can select for the domestic hot water.
You can use this setting to limit the
temperature at the hot water taps.
Range: 40°C~80°C (default: 60°C).
The maximum temperature is NOT
applicable during disinfection function.
See disinfection function.
8.2.7
Contact/helpdesk number
#
Code
Description
[6.3.2]
N/A
Number that users can call in case of
problems.
