Daikin Altherma 3 H HT F Installer's Reference Manual page 172

10 | Configuration
Installer reference guide
172
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 for the main leaving water temperature zone can close under
these circumstances:
INFORMATION
During defrost operation, the shut-off valve is ALWAYS opened.
During thermo: If [F‑0B] is enabled, the shut off valve closes 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.
# Code
[2.D.1] [F-0B]
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).
During cooling: If [F‑0B] is enabled, the shut off valve closes 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
[2.D.2] [F-0C]
WD curve type
The weather-dependent curve can be defined using the 2-points method or the
Slope-Offset method.
See "10.4.2 2-points curve" [
# Code
[2.E] N/A
The shut off valve:
▪ 0 No: is NOT influenced by heating or cooling
demand.
▪ 1 Yes: closes when there is NO heating or
cooling demand.
The shut off valve:
▪ 0 No: is NOT influenced by changing the space
operation mode to cooling.
▪ 1 Yes: closes when the space operation mode
is cooling.
4
153] and "10.4.3 Slope-offset
▪ 2-points
▪ Slope-Offset
Description
Description
4
curve" [ 154].
Description
EPRA14~18D + ETVH16SU18+23E
Daikin Altherma 3 H HT F
4P644738-1A – 2022.03