Daikin ERLQ004CAV3, Installer'S Reference Manual

Page: 52 / 108

8
Configuration
Installer reference guide
52
ERLQ004~008CA + 08S18CA3VF
Daikin Altherma low temperature split
4P366226­1 – 2014.01
Leaving water temperature maximum modulation
ONLY applicable in room thermostat control and when modulation is
enabled. The maximum modulation (=variance) on the desired
leaving water temperature decided on the difference between the
actual and desired room temperature, e.g. 3°C modulation means
the desired leaving water temperature can be increased or lowered
by 3°C. Increasing the modulation results in better performance (less
On/OFF, faster heat up), but note that depending on the heat
emitter, there MUST ALWAYS be a balance (refer to the design and
selection of the heat emitters) between the desired leaving water
temperature and the desired room temperature.
# Code Description
N/A [8­06] 1~5°C (default: 3°C)
Temperature ranges (room temperature)
ONLY applicable in room thermostat control. In order to save energy
by preventing overheating the room, you can limit the range of the
room temperature.
NOTICE
When adjusting the room temperature ranges, all desired
room temperatures are also adjusted to guarantee they are
between the limits.
# Code Description
Room temp. range
[A.3.2.1.2] [3­06] Maximum temp (heating)
18~30°C (default: 30°C)
[A.3.2.1.1] [3­07] Minimum temp (heating)
12~18°C (default: 12°C)
Room temperature step
ONLY applicable in room thermostat control and when the
temperature is displayed in °C.
# Code Description
[A.3.2.4] N/A Room temp. step
▪ 1°C (default). The desired room
temperature on the user interface is
settable per 1°C.
▪ 0.5°C. The desired room temperature
on the user interface is settable per
0.5°C. The actual room temperature is
displayed with an accuracy of 0.1°C.
Room temperature hysteresis
ONLY applicable in case of room thermostat control. The hysteresis
band around the desired room temperature is settable. Daikin
advises NOT to change the room temperature hysteresis as it is set
for an optimal use of the system.
[9-0C]
a
b
c
d
a
Room temperature
b
Actual room temperature
c
Desired room temperature
d
Time
# Code Description
N/A [9­0C] 1~6°C (default: 1°C)
Room temperature offset
ONLY applicable in case of room thermostat control. You can
calibrate the (external) room temperature sensor. It is possible to
give an offset to the room thermistor value measured by the user
interface or by the external room sensor. The settings can be used
to compensate for situations where the user interface or external
room sensor CANNOT be installed on the ideal installation location
(see installation manual and/or installer reference guide).
# Code Description
Room temp. offset: Offset on the actual room temperature
measured on the user interface sensor.
[A.3.2.2] [2­0A] −5~5°C, step 0.5°C (default: 0°C)
Ext. room sensor offset: ONLY applicable if the external room
sensor option is installed and configured (see [C­08])
[A.3.2.3] [2­09] −5~5°C, step 0.5°C (default: 0°C)
Room frost protection
ONLY applicable in case of room thermostat control. When the
actual room temperature would drop below the room frost
temperature, the unit will supply leaving water (in heating operation
mode) to the heat emitters to heat up the room again.
NOTICE
Even if the room thermostat control is OFF on the user
interface, room frost protection remains active.
# Code Description
N/A [2­06] Room frost protection
▪ 0: disabled
▪ 1: enabled (default)
N/A [2­05] Room antifrost temperature
4~16°C (default: 12°C)
Shut­off valve
ONLY applicable in case of 2 leaving water temperature zones.
The shut­off valve, which is in the main leaving water temperature
zone, output is configurable.
INFORMATION
During defrost operation, the shut­off valve is ALWAYS
opened.
Thermo On/OFF: the valve closes, depending on [F­0B] when there
is no heating demand from the main zone. Enable this setting to:
▪ avoid leaving water supply to the heat emitters in the main LWT
zone (through the mixing valve station) when there is request from
the additional LWT zone.
▪ activate the On/OFF pump of the mixing valve station ONLY when
there is demand. See "5 Application guidelines" on page 10 .
# Code Description
[A.3.1.1.6.1] [F­0B] The shut­off valve:
▪ 0 (No)(default): is NOT influenced by
heating demand.
▪ 1 (Yes): closes when there is NO
heating demand.
INFORMATION
The setting [F­0B] is only valid when there is a thermostat
or external room thermostat request setting (NOT in case
of leaving water temperature setting).