8 Configuration
Installer reference guide
54
ERGA04~08DAV3(A) + 08S18+23DA
Daikin Altherma – Low temperature split
4P495249-1 – 2017.12
#
Code
Description
[4.4]
[7‑02]
▪ 0: Single zone
Only one leaving water temperature
zone:
a
▪ a: Main LWT zone
[4.4]
[7‑02]
▪ 1: Dual zone
Two leaving water temperature zones.
The main leaving water temperature
zone consists of the higher load heat
emitters and a mixing station to
achieve the desired leaving water
temperature. In heating:
a
b
▪ a: Additional LWT zone: Highest
temperature
▪ b:
Main
LWT
zone:
Lowest
temperature
CAUTION
If there are 2 zones, it is important that the zone with the
lowest water temperature is configured as the main zone,
and the zone with the highest water temperature is
configured as the additional zone. Not configuring the
system in this way could cause damage to the heat
emitters.
CAUTION
If there are 2 zones and the emitter types are wrongly
configured, water of high temperature can be sent towards
a low temperature emitter (underfloor heating). To avoid
this:
▪ Install an aquastat/thermostatic valve to avoid too high
temperatures towards a low temperature emitter.
▪ Make sure you set the emitter types for the main zone
[2.7] and for the additional zone [3.7] correctly in
accordance with the connected emitter.
Pump operation mode
When the space heating operation is OFF, the pump is always OFF.
When space heating operation is ON, you have the choice between
these operation modes:
#
Code
Description
[4.5]
[F–0D]
Pump operation mode:
▪ 0
Continuous:
Continuous
pump
operation, regardless of thermo ON or
OFF condition.
Remark:
Continuous
pump operation requires more energy
than
sample
or
request
pump
operation.
a
b
c
d
b
c
▪ a: Space heating control
▪ b: Off
▪ c: On
▪ d: Pump operation
[4.5]
[F-0D]
▪ 1 Sample: The pump is ON when
there is heating demand as the leaving
water temperature has not yet reached
the desired temperature yet. When
thermo OFF condition occurs, the
pump runs every 3 minutes to check
the water temperature and demand
heating if necessary.
Remark:
Sample
is ONLY available in leaving water
temperature control.
a
b
d
e
f
c
g
b
c
▪ a: Space heating control
▪ b: Off
▪ c: On
▪ d: LWT temperature
▪ e: Actual
▪ f: Desired
▪ g: Pump operation
[4.5]
[F-0D]
▪ 2 Request: Pump operation based on
request.
Example:
Using a room
thermostat and thermostat creates
thermo ON/OFF condition.
Remark:
NOT available in leaving water
temperature control.
a
d
e
b
b
c
b
c
c
▪ a: Space heating control
▪ b: Off
▪ c: On
▪ d: Heating demand (by external
room
thermostat
or
room
thermostat)
▪ e: Pump operation
