3 About the box
Installation manual
4
ETV23E
Daikin Altherma 3 H HT F
4P644729-1E – 2023.10
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
DANGER: RISK OF ELECTROCUTION
WARNING
Electrical wiring connection method MUST be in
accordance with the instructions from:
▪ This manual. See
▪ The wiring diagram, which is delivered with the unit,
located on the inside of the indoor unit switch box
cover. For a translation of its legend, see
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
national wiring regulation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
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.
WARNING
The backup heater MUST have a dedicated power supply
and MUST be protected by the safety devices required by
the applicable legislation.
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
32])
WARNING
Commissioning method MUST be in accordance with the
instructions
from
this
manual.
See
32].
34])
CAUTION
Water coming out of the valve may be very hot.
WARNING
If the internal wiring is damaged, it has to be replaced by
the manufacturer, its service agent or similarly qualified
persons.
DANGER: RISK OF BURNING/SCALDING
The water in the tank can be very hot.
CAUTION
Make sure to open the valve (if equipped) towards the
expansion vessel, otherwise the overpressure will be
generated.
3
About the box
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
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.
3.1
Indoor unit
3.1.1
To remove the accessories from the
indoor unit
1×
b
4×
a
1×
f
1×
g
1×
h
1×
i
4×
l
6×
k
1×
m
1×
j
1×
c
1×
d
1×
e
a
Shut-off valves for water circuit
b
Differential pressure bypass valve
c
Tundish (to mount onto the pressure relief valve
discharge pipe)
