To Protect The Water Circuit Against Freezing; To Fill The Heat Exchanger Inside The Storage Tank; To Fill The Storage Tank - Daikin Altherma 3 R ECH2O Installation Manual
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Also See for Altherma 3 R ECH2O:
- Installation and operating manual (344 pages) ,
- Installer's reference manual (316 pages) ,
- User reference manual (68 pages)
Table of Contents
7 Close the water tap. Keep the fill and drain valve open in case it
is necessary to repeat the filling procedure after the air purging
of the system. See
"8.2.2 To perform an air
8 Close the fill and drain valve and remove the hose with non-
return valve only after air purging is performed and the system
is completely filled.
5.4.4
To protect the water circuit against
freezing
About freeze protection
Frost can damage the system. To prevent the hydraulic components
from freezing, the software is equipped with special frost protection
functions such as water pipe freeze prevention and drain prevention
(see the installer reference guide) that include the activation of pump
in case of low temperatures.
However, in case of a power failure, these functions cannot
guarantee protection.
Do one of the following to protect the water circuit against freezing:
▪ Add glycol to the water. Glycol lowers the freezing point of the
water.
▪ Install freeze protection valves. Freeze protection valves drain the
water from the system before it can freeze. Insulate the freeze
protection valves in a similar way as the water piping, but do NOT
insulate the inlet and outlet (release) of these valves.
NOTICE
If you add glycol to the water, do NOT install freeze
protection valves. Possible consequence: Glycol leaking
out of the freeze protection valves.
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.
5.4.5
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.
EBSH/X(B)11+16P30+50DF
Daikin Altherma 3 R ECH₂O
4P663483-1A – 2021.11
3 Keep the hot water taps open and the cold water supply running
until no more air is vented from the taps.
purge" [ 4 45].
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.
5.4.6
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.
5 Piping installation
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.
Installation manual
21
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