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3 About the box
WARNING
Due to the presence of glycol, corrosion of the system is
possible. Uninhibited glycol will turn acidic under the
influence of oxygen. This process is accelerated by the
presence of copper and high temperatures. The acidic
uninhibited glycol attacks metal surfaces and forms
galvanic corrosion cells that cause severe damage to the
system. Therefore it is important that:
▪ the water treatment is correctly executed by a qualified
water specialist,
▪ a glycol with corrosion inhibitors is selected to
counteract acids formed by the oxidation of glycols,
▪ no automotive glycol is used because their corrosion
inhibitors have a limited lifetime and contain silicates
which can foul or plug the system,
▪ galvanized pipes are NOT used in glycol systems since
the presence may lead to the precipitation of certain
components in the glycol's corrosion inhibitor.
Electrical installation (see
"6 Electrical
DANGER: RISK OF ELECTROCUTION
WARNING
Electrical
wiring
connection
accordance with the instructions from this manual. See
installation" [ 4 16].
"6 Electrical
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction
MUST
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
▪ If the power supply has a missing or wrong N-phase,
equipment might break down.
▪ Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
▪ Do NOT install a phase advancing capacitor, because
this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.
WARNING
The backup heater MUST have a dedicated power supply
and MUST be protected by the safety devices required by
the applicable legislation.
Installation manual
6
installation" [ 4 16])
method
MUST
be
in
comply
with
the
applicable
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
CAUTION
Do NOT push or place redundant cable length into the unit.
CAUTION
To guarantee the unit is completely earthed, ALWAYS
connect the backup heater power supply and the earth
cable.
INFORMATION
Details of type and rating of fuses, or rating of circuit
breakers are described in
Configuration (see "7 Configuration" [ 4 28])
WARNING
Be aware that the domestic hot water temperature at the
hot water tap will be equal to the value selected in field
setting [2-03] after a disinfection operation.
When the high domestic hot water temperature can be a
potential risk for human injuries, a mixing valve (field
supply) shall be installed at the domestic hot water out
connection of the storage tank. This mixing valve shall
secure that the hot water temperature at the hot water tap
never rise above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to the applicable legislation.
CAUTION
The disinfection function settings MUST be configured by
the installer according to the applicable legislation.
CAUTION
Make sure that the disinfection function start time [5.7.3]
with defined duration [5.7.5] is NOT interrupted by possible
domestic hot water demand.
Commissioning (see "8 Commissioning" [ 4 38])
WARNING
Commissioning method MUST be in accordance with the
instructions
from
"8 Commissioning" [ 4 38].
3
About the box
Keep the following in mind:
▪ At delivery, the unit MUST be checked for damage and
completeness. Any damage or missing parts MUST be reported
immediately to the claims agent of the carrier.
▪ Bring the packed unit as close as possible to its final installation
position to prevent damage during transport.
▪ Prepare in advance the path along which you want to bring the
unit to its final installation position.
installation" [ 4 16].
"6 Electrical
this
manual.
See
ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH₂O
4P679468-1B – 2022.09
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