Daikin Altherma EHBH08DA6V7 - 5.4.5 DHW pump for disinfection; 5.4.6 DHW pump for tank preheating

5 | Application guidelines
Installer reference guide
40
ERGA04~08DAV3(A) + EHBH/X04+08DA*V7
Daikin Altherma 3 R W
4P618958-1 – 2020.03
▪ You can program a schedule to control the DHW pump via the user interface. For
more information, see the user reference guide.
5.4.5 DHW pump for disinfection
Setup
c
a
b
d f
e g
h
i
a Indoor unit
b DHW tank
c DHW pump (field supply)
d Heater element (field supply)
e Non‑return valve (field supply)
f Shower (field supply)
g Cold water
h Domestic hot water OUT
i Recirculation connection
▪ The DHW pump is field-supplied and its installation is the responsibility of the
installer. For the electrical wiring, see "7.9.12To connect the domestic hot water
pump"[4101].
▪ If the applicable legislation requires a higher temperature than the maximum
tank setpoint during disinfection (see [2-03] in the field settings table), you can
connect a DHW pump and heater element as shown above.
▪ If applicable legislation requires disinfection of the water piping until the tapping
point, you can connect a DHW pump and heater element (if needed) as shown
above.
Configuration
The indoor unit can control DHW pump operation. For more information, see
"8Configuration"[4106].
5.4.6 DHW pump for tank preheating
Setup
c
a
b
e
d
f
g
h
a Indoor unit
b DHW tank
c DHW pump (field supply)
d Non‑return valve (field supply)
e Shower (field supply)
f Cold water
g Domestic hot water OUT
h Recirculation connection
▪ The DHW pump is field-supplied and its installation is the responsibility of the
installer. For the electrical wiring, see "7.9.12To connect the domestic hot water
pump"[4101].
▪ For the standalone DHW tank: If there is no electrical backup heater in the space
heating circuit, you must install a DHW pump for tank preheating.