To Fill The Heat Exchanger Inside The Storage Tank; To Fill The Storage Tank - Daikin EPRA10EAV3 Installer's Reference Manual

8 | Piping installation

8.2.7 To fill the heat exchanger inside the storage tank

8.2.8 To fill the storage tank

Installer reference guide
100
Part
Isolation of water inside the house when there is a power
c
interruption. Normally closed valves (located indoors near the
piping entry/exit points) can prevent that all water from indoor
piping is drained when the freeze protection valves open.
▪ When there is a power interruption: The normally closed valves
close and isolate the water inside the house. If the freeze
protection valves open, only the water outside the house is
drained.
▪ In other circumstances (example: when there is a pump failure):
The normally closed valves remain open. If the freeze protection
valves open, the water from inside the house is also drained.
NOTICE
When freeze protection valves are installed, set the minimum cooling setpoint
(default=7°C) at least 2°C higher than the maximum opening temperature of the
freeze protection valve. If lower, freeze protection valves can open during cooling
operation.
Following heat exchanger have to be filled with water before the storage tank can
be filled:
▪ The domestic hot water heat exchanger
NOTICE
To fill the domestic hot water heat exchanger, use a field supply filling kit. Make sure
you comply with the applicable legislation.
1 Open the shut-off valve for the cold water supply.
2 Open all hot water taps in the system to make sure that the tapped water flow
is as high as possible.
3 Keep the hot water taps open and the cold water supply running until no
more air is vented from the taps.
4 Check for water leaks.
▪ The bivalent heat exchanger (only for some models)
5 Fill the bivalent heat exchanger with water by connecting the bivalent heating
circuit. If the bivalent heating circuit will be installed on a later stage, fill the
bivalent heat exchanger with a filling hose until water comes out of both
connections.
6 Do air purge on the bivalent heating circuit.
7 Check for water leaks.
NOTICE
Before the storage tank can be filled, the heat exchangers inside the storage tank
have to be filled, see previous chapters.
Fill the storage tank with a water pressure <6 bar and a flow speed <15 l/min.
Description
EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1B – 2022.07