Daikin Altherma 3 H MT W - Page 199

10 | Configuration
Installer reference guide
199
EPRA08~12EAV3+W1 + ETBH/X12EF6V+9W
Daikin Altherma 3 H MT W
4P634885-1 – 2021.03
# Code Description
[9.4.4] [4-03] ▪ 0 Restricted: Booster heater operation is
NOT allowed except for "Disinfection function"
and "Powerful domestic water heating".
Only use this in case the heat pump capacity
can cover the heating requirements of the
house and domestic hot water during the
complete heating season.
The booster heater will not be allowed to
operate when T
a
<[5‑03] and [5‑02]=1. The
domestic hot water temperature can be
maximum the heat pump OFF temperature.
[9.4.4] [4-03] ▪ 1 Allowed: Booster heater operation is
allowed when required.
[9.4.4] [4-03] ▪ 2 Overlap: The booster heater is allowed
outside the operation range of the heat pump
for domestic hot water operation.
Booster heater operation is only allowed if:
- Ambient temperature is out of the operating
range: T
a
<[5‑03] or T
a
>35°C
The booster heater is only allowed to operate
when T
a
<[5‑03] if space heating priority is
enabled ([5‑02]=1).
- Domestic hot water temperature is 2°C lower
than the heatpumpOFF temperature.
If bivalent operation is enabled ([C‑02]=1) and
permission signal for auxiliary boiler is ON, the
booster heater will be restricted even when
T
a
<[5‑03].
9.4.4 [4-03] ▪ 3 Compressor off: The booster heater is
allowed when the heat pump is NOT active in
domestic hot water operation.
Same as setting1, but simultaneous heatpump
domestic hot water operation and booster
heater operation is not allowed.
9.4.4 [4-03] ▪ 4 Legionella only: Booster heater
operation is NOT allowed except for
"Disinfection function".
Only use this in case the capacity of the
heatpump can cover the heating requirements
of the house and domestic hot water over the
complete heating season.
The booster heater will not be allowed to
operate when T
a
<[5‑03] and [5‑02]=1. The
domestic hot water temperature can be
maximum the heat pump OFF temperature.