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8
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Piping installation
8.2.5 To connect the recirculation piping
8.2.6 To fill the water circuit
8.2.7 To protect the water circuit against freezing
About freeze protection
Installer reference guide
98
NOTICE
▪
All pipework and fittings must be flushed free of flux and debris prior to installing
the domestic hot water tank kit. Failure to do this may cause irreparable damage
to the tank kit controls. Flush the system by opening the hot water tap.
▪
The tundish pipework must be a 22 mm metal pipe with a minimal vertical length
of 300 mm below the tundish before any elbows or bends in the pipework. All
pipework must have a continuous fall of 1 in 200 thereafter. Maximum permitted
(equivalent) length of 22 mm pipework is 9 m. Each bend or elbow is equivalent
to 0.8 m of pipework.
Prerequisite: Only required if you need recirculation in your system.
1 Remove the top panel from the unit, see
4
unit" [
71].
2 Cut out the rubber grommet on top of the unit, and remove the stop. The
recirculation connector is placed below the hole.
3 Route the recirculation piping through the grommet and connect it to the
recirculation connector.
4 Reattach the top panel.
To fill the water circuit, use a field supply filling kit. Make sure you comply with the
applicable legislation.
NOTICE
Make sure both air purge valves (one on the magnetic filter and one on the backup
heater) are open.
All automatic air purge valves MUST remain open after commissioning.
Frost can damage the system. To prevent the hydraulic components from freezing,
the software is equipped with special frost protection functions, that include the
activation of pump in case of low temperatures:
▪
Water pipe freeze prevention (see
"7.2.6 To open the indoor
"Water pipe freeze
prevention" [
4
209]),
EPRA14~18D + ETVH16SU18+23E
Daikin Altherma 3 H HT F
4P644738-1D – 2023.10
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