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▪ When the leaving water temperature home page is ON and the
operation mode is "heating", then the unit will supply leaving water
to the heat emitters to heat up the room according to normal logic.
▪ When the leaving water temperature home page is ON and the
operation mode is "cooling", then there is no protection.
Shut-off valve
The following is only applicable in case of 2 leaving water
temperature zones. In case of 1 leaving water temperature zone,
connect the shut-off valve to the heating/cooling output.
The shut-off valve, which is in the main leaving water temperature
zone, output is configurable.
INFORMATION
During defrost operation, the shut-off valve is ALWAYS
opened.
Thermo On/OFF: the valve closes, depending on [F-0B] 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
#
Code
[A.3.1.1.6.1] [F-0B]
The shut-off valve:
▪ 0 (No)(default): is NOT influenced by
heating or cooling demand.
▪ 1 (Yes): closes when there is NO
heating or cooling demand.
INFORMATION
The setting [F‑0B] is only valid when there is a thermostat
or external room thermostat request setting (NOT in case
of leaving water temperature setting).
Cooling: ONLY applicable for EHBX and EHVX. The shut-off valve
closes, depending on [F-0C] when the unit is running in cooling
operation mode. Enable this setting to avoid cold leaving water
through the heat emitter and the forming of condensation (e.g. under
floor heating loops or radiators).
#
Code
[A.3.1.1.6.2] [F-0C]
The shut-off valve:
▪ 0 (No): is NOT influenced by changing
the space operation mode to cooling.
▪ 1 (Yes)(default): closes when the
space operation mode is cooling.
Operation range
Depending on the average outdoor temperature, the operation of the
unit in space heating or space cooling is prohibited.
Space heating OFF temp: When the averaged outdoor temperature
raises above this value, space heating is turned OFF to avoid
overheating.
#
Code
[A.3.3.1]
[4-02]
▪ EHBH/X04+08
14°C~35°C (default: 25°C)
▪ EHBH/X11+16
14°C~35°C (default: 35°C)
The same setting is also used in
automatic heating/cooling changeover.
Space cooling On temp: ONLY applicable for EHBX and EHVX.
When the averaged outdoor temperature drops below this value,
space cooling is turned OFF.
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1D – 2018.07
page 11.
Description
Description
Description
and
EHVH/X04+08:
and
EHVH/X11+16:
#
Code
[A.3.3.2]
[F-01]
10°C~35°C (default: 20°C)
The same setting is also used in
automatic heating/cooling changeover.
Automatic heating/cooling changeover
ONLY applicable for EHBX and EHVX. The end-user sets the
desired operation mode on the user interface: Heating, Cooling or
Automatic (see also operation manual/user reference guide). When
Automatic is selected, the changing of the operation mode is based
on:
▪ Monthly allowance for heating and/or cooling: the end-user
indicates on a monthly base which operation is allowed ([7.5]: both
heating/cooling or heating ONLY or cooling ONLY). If the allowed
operation mode changes to cooling ONLY, the operation mode
changes to cooling. If the allowed operation mode changes to
heating ONLY, the operation mode changes to heating.
▪ Averaged outdoor temperature: the operation mode will be
changed in order to ALWAYS be within range determined by the
space heating OFF temperature for heating and the space cooling
On temperature for cooling. If the outdoor temperature drops, the
operation mode switches to heating and vice versa. Note that the
outdoor
temperature
will
"8 Configuration" on
page 47).
When the outdoor temperature is between the space cooling On and
the space heating OFF temperature, the operation mode remains
unchanged unless the system is configured in room thermostat
control with one leaving water temperature zone and quick heat
emitters. In that case, the operation mode will change based on:
▪ Measured indoor temperature: besides the heating and the
cooling desired room temperature, the installer sets a hysteresis
value (e.g. when in heating, this value is related to the desired
cooling temperature) and an offset value (e.g. when in heating,
this value is related to the desired heating temperature). Example:
the desired room temperature in heating is 22°C and in cooling
24°C, with a hysteresis value of 1°C and an offset of 4°C.
Changeover from heating to cooling will occur when the room
temperature rises above the maximum of the desired cooling
temperature added by the hysteresis value (thus 25°C) and the
desired heating temperature added by the offset value (thus
26°C). Oppositely, changeover from cooling to heating will occur
when the room temperature drops below the minimum of the
desired heating temperature subtracted by the hysteresis value
(thus 21°C) and the desired cooling temperature subtracted by the
offset value (thus 20°C).
▪ Guard timer to prevent too frequent changing from heating to
cooling and vice versa.
Changeover settings related to the outdoor temperature (ONLY
when automatic is selected):
#
Code
[A.3.3.1]
[4-02]
Space heating OFF temp. If the outdoor
temperature rises above this value, the
operation mode will change to cooling:
▪ EHBH/X04+08
14°C~35°C (default: 25°C)
▪ EHBH/X11+16
14°C~35°C (default: 35°C)
[A.3.3.2]
[F-01]
Space cooling On temp. If the outdoor
temperature drops below this value, the
operation mode will change to heating:
Range: 10°C~35°C (default: 20°C)
8 Configuration
Description
be
time-averaged
(see
Description
and
EHVH/X04+08:
and
EHVH/X11+16:
Installer reference guide
61
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