Daikin Altherma 3 H HT - 9.3 Backup heater

10 | Configuration
Installer reference guide
189
EPRA14~18D + ETVZ16S18+23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03
DHW pump
# Code Description
[9.2.2] [D‑02] DHW pump:
▪ 0: No DHW pump: NOT installed
▪ 1: Instant hot water: Installed for instant
hot water when water is tapped. The user sets
the operation timing of the domestic hot water
pump using the schedule. Control of this pump
is possible with the user interface.
▪ 2: Disinfection: Installed for disinfection. It
runs when the disinfection function of the
domestic hot water tank is running. No further
settings are needed.
See also:
▪ "6.4.4DHW pump for instant hot water"[442]
▪ "6.4.5DHW pump for disinfection"[443]
DHW pump schedule
Program a schedule for the DHW pump (only for field supplied domestic hot
water pump for secondary return).
Program a domestic hot water pump schedule to determine when to turn on and
off the pump.
When turned on, the pump runs and makes sure hot water is instantly available at
the tap. To save energy, only turn on the pump during periods of the day when
instant hot water is necessary.
Backup heater
Besides the type of backup heater, the voltage, configuration and capacity must be
set on the user interface.
The capacities for the different steps of the backup heater must be set for the
energy metering and/or power consumption feature to work properly. When
measuring the resistance value of each heater, you can set the exact heater
capacity and this will lead to more accurate energy data.
Backup heater type
The backup heater is adapted to be connected to most common European
electricity grids. The type of backup heater can be viewed but not changed.
# Code Description
[9.3.1] [E‑03] ▪ 3: 6V
▪ 4: 9W
Voltage
▪ For a 6V model, this can be set to:
- 230V, 1ph
- 230V, 3ph
▪ For a 9W model, this is fixed to 400V, 3ph.