Connecting Hydraulic Lines - Daikin Altherma EHS Serie Manual De Instrucciones E Instalación

CAUTION!
If the plug brackets are not inserted
properly, the couplings can come loose
in their mounts which may result in high
levels of fluid escape and continuous
fluid escape.
Before plugging in a plug bracket,
make sure that the plug bracket
engages in the groove in the coupling.
To do this, insert the coupling into the
mount until the groove becomes
visible through the plug bracket
mount.
Insert the plug bracket up to the stop.
Secure the elbow back into its mount with plug bracket
(fig. 4-11, item G).
Insert both connection couplings (fig. 4-11, item B) through
the retainer plate in the side mounts.
Secure both connection couplings in their mounts with the
plug brackets (fig. 4-11, item C).
Insert the closing plug (fig. 4-11, item E) in the top mount.
Secure the closing plug with the plug bracket (fig. 4-11,
item D).
Cut out the side transit points in the thermal insulation
(fig. 4-12, item A) using a suitable tool.
Fig. 4-12 Thermal insulation cut-out

4.4.2 Connecting hydraulic lines

Requirement: Optional accessories (e.g. Solar, Backup-Heater)
mounted on the Daikin Altherma EHS(X/H) according to the
specifications of the instructions included.
Check cold water pressure (maximum 6 bar).
– At higher pressure in the drinking water line, a pressure
reducer must be installed.
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1441399_02 – 01/2021 – EN
4 x Set-up and installation
Establish hydraulic connections at the Daikin Altherma
EHS(X/H).
– Position and dimensions of the heating connections to be
taken from fig. 4-1 / fig. 4-2 and from tab. 3-1.
– Pay attention to the stipulated tightening torque
(see section 10.3 "Tightening torque").
– Design the lines as such that the sound attenuation cowl
can be applied without any problem following assembly.
– Connect the water for filling or refilling the heating system
as specified by EN 1717 to avoid contamination of drink-
ing water by backwash.
Connect a drain line to the safety overpressure valve and
connect a diaphragm drain container in accordance with
EN 12828.
– Check the seating of the drain hose on the overpressure
valve.
– If required, attach your own hose and route accordingly.
Carefully insulate pipe lines against heat loss and so as to
avoid the formation of condensation (insulation thickness at
least 20 mm).
– Water shortage protection: The pressure and temperature
monitoring of the control unit safely switches off the Daikin
Altherma EHS(X/H) in the event of a water shortage. No addi-
tional water shortage protection is needed in the construction.
– Avoid damages caused by deposits and corrosion:
Observe the relevant regulations of technology to prevent
creation of corrosion products and deposits.
Minimum requirements regarding the quality of filling and sup-
plementary water:
– Water hardness (calcium and magnesium, calculated as
calcium carbonate):
– Conductivity: 1500 (ideal
– Chloride: 250 mg/l
– Sulphate: 250 mg/l
– pH value (heating water): 6,5 - 8,5
In the case of filling and top-up water with a high overall hardness
or other properties that deviatte from the minimum requirements,
measures for the desalination, softening, hardness stabilisation
or other suitable conditioning measures are required to maintain
the required water quality.
WARNING!
There is a danger of scalding at hot
water temperatures over 60 °C. This is
possible, when solar energy is used, with
a connected external heating device,
when the Legionella protection is acti-
vated or when the domestic hot water
target temperature is set higher
than 60 °C.
Install scald protection
(hot water mixer (e.g. VTA32).
Connect the drain hose to the connection piece for the safety
overflow (fig. 3-2 to fig. 3-5, item 23).
– Use transparent drain hose (draining water must be visi-
ble).
– Connect the drain hose to an adequately dimensioned
waste water installation.
– Drain should not be lockable.
3 mmol/l
100) S/cm
Installation and operating instructions
23