To Fill The Heat Exchanger Inside The Storage Tank; To Fill The Storage Tank - Daikin Altherma 3 H MT ECH2O Series Installation Manual

NOTICE
▪ The required concentration might differ depending on
the type of glycol. ALWAYS compare the requirements
from the table above with the specifications provided by
the glycol manufacturer. If necessary, meet the
requirements set by the glycol manufacturer.
▪ The added concentration of glycol should NEVER
exceed 35%.
▪ If the liquid in the system is frozen, the pump will NOT
be able to start. Mind that if you only prevent the
system from bursting, the liquid inside might still freeze.
▪ When water is at standstill inside the system, the
system is very likely to freeze and get damaged.
Glycol setting
NOTICE
If glycol is present in the system, setting [E-0D] must be
set to 1. If the glycol setting is NOT set correctly, the liquid
inside the piping can freeze.
Freeze protection by freeze protection valves
About freeze protection valves
When no glycol is added to the water, you can use freeze protection
valves to drain the water from the system before it can freeze.
▪ Install freeze protection valves (field supply) at all lowest points of
the field piping.
▪ 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.
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.
For more information, see the installer reference guide.
5.2.5 To fill the heat exchanger inside the
storage tank
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.
ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663479-1 – 2021.07
5.2.6

To fill the storage tank

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.
Without installed drainback solar kit (option)
1 Connect a hose with non-return valve (1/2") to the drainback
connection.
2 Fill the storage tank until water spills from the spillover
connection.
3 Remove the hose.
b
a
b
a Drainback connection
b Spillover connection
c Hose with non-return valve (1/2")
5 Piping installation
c
a
Installation manual
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