Hydraulic Connection - Daikin EKHHP300AA2V3 Installation And Operating Instructions Manual

4.4 Hydraulic connection

CAUTION!
If the DAIKIN EKHHP is connected to a cold
water line, where steel pipes are used, chips
can enter the special steel corrugated pipe heat
exchanger and remain there. This can lead to
contact corrosion damage and subsequently
to leakage.
● Flush the feed pipes before filling the heat
exchanger.
● Install contamination filter in the cold water
feed (see Section 2.4.5).
ONLY DAIKIN EKHHP500AA2V3
CAUTION!
If the heat exchanger for charging the pres-
surised solar system (see overview image on
Fig. 3-1, Items 4+5) has an external heating
unit (e.g. wood-burning boiler) connected to it,
an excessive flow temperature at these connec-
tions can damage or destroy the DAIKIN
EKHHP.
● The feed flow temperature of the external
heater should be limited to max. 95 °C.
Requirement: Optional accessories (e.g. Solar) mounted on the
DAIKIN EKHHP according to the specifications in the instructions
included with the delivery.
● Check the cold water connection pressure (maximum 6 bar).
– At higher pressure in the drinking water line, a pressure
reducer must be installed.
● Remove the cover on the
DAIKIN EKHHP.
● When using circulation brakes, fit them into the pipe
connections on the DAIKIN EKHHP.
● Create hydraulic connections on the DAIKIN EKHHP (see
Fig. 4-5).
– Fig. 3-1 and Tab. 3-1 give the position and dimensions of
the connections.
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Fig. 4-3 Remove the protective
cover.
4 x Set-up and installation
If the installation conditions require the hydraulic
connection to be directly upwards, the cover
hood can be cut out along the broken line.
Fig. 4-4 Creating the hood cut-out
– Pay attention to the stipulated tightening torque (see
Section 4.1).
– Design the lines as such that the sound attenuation cowl
can be applied without any problem following assembly.
WARNING!
There is a danger of scalding at hot water
temperatures over 60 °C. This is possible,
when solar energy is used, with a con-
nected external heating device, when the
Legionella protection is activated or when
the domestic hot water target temperature
is set higher than 60 °C.
● Install scald protection (hot water mixer
(e.g. VTA32).
– Water shortage protection: The temperature monitoring
of the controller safely switches off the DAIKIN EKHHP in
the event of a water shortage. No additional water short-
age protection is needed in the construction. Neverthe-
less, regular checking of the fill level is necessary in order
to ensure function as intended.
– Avoid damages caused by deposits and corrosion:
Observe the requirements for storage tank water (see
Section 2.4.6).
Installation and operating instructions
11