Pressure Test And Filling The Refrigerant Circuit; Filling The System; Checking The Water Quality And Adjusting The Pressure Gauge; Filling Hot Water Heat Exchangers - Daikin Altherma EHSX04P30D Instructions D'installation Et De Maintenance

4 Set-up and installation
Fig. 4-46 Oil trap bend for refrigerant line
Item Designation
A Heat pump outdoor unit
B Daikin Altherma EHS(X/H)
C Gas line
D Liquid line
E Oil trap bend
H Height to 1st oil trap (max. 10 m)
H Height difference between heat pump outdoor unit and
O
heat pump indoor unit
Tab. 4-9 Legend for Fig. 4-46
4.8.2 Pressure test and filling the refrigerant
circuit
WARNING
The overall heat pump system contains refrigerants with
fluorinated greenhouse gases that are harmful to the envir-
onment when released.
Refrigerant type: R32
GWP* value: 675
*GWP = Global Warming Potential
▪ Enter the total filling quantity of refrigerant on the label
supplied on the external heat pump unit (for notes, see
Installation instructions for the heat pump outdoor unit).
▪ Never allow refrigerant to escape into the atmosphere -
always extract and recycle with a suitable recycling
device.
1 Perform pressure test with nitrogen.
▪ Use nitrogen 4.0 or higher.
▪ Maximum 40 bar.
2 After the leak search is complete, completely drain.
Installation and maintenance instructions
30
3 Vacuum lines.
▪ Pressure to be reached: 1 mbar absolute.
▪ Time: Minimum 1 h
4 Check whether additional refrigerant is needed for primer filling;
fill if necessary.
5 Open the stop valves on the exterior unit completely until the
stop. Slightly tighten.
6 Reinstall the valve caps.
7 Check that the storage tank temperature sensors are inserted to
a depth of t 80 cm and t
DHW1 DHW2
4.9

Filling the system

Only fill the Daikin Altherma EHS(X/H) after completion of all installa-
tion work in the order shown below.
4.9.1 Checking the water quality and adjusting
the pressure gauge
1 Comply with the instructions for the water connection (see Water
connection) and for the water quality.
2 Adjust the mechanical pressure gauge (mounted on site in ac-
cordance with Connecting hydraulic lines or temporarily installed
with filling hose): Turn the pressure gauge glass so that the min-
imum pressure marking corresponds to the system height +2 m
(1 m water column corresponds to 0.1 bar).
4.9.2

Filling hot water heat exchangers

1 Open the shutoff valve for the cold water supply pipe.
2 Open the hot water tap connections so that the draw-off volume
can be set as high as possible.
3 Once water has been discharged from the tap connections, do
not interrupt the cold water flow to ensure that the heat ex-
changer will be fully vented and that any impurities or residue
will be discharged.
4.9.3

Filling the storage tank

see Chap. 7.2.1.
4.9.4

Filling the heating system

see Chap. 7.2.2.
60 cm.
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1444099_00 – 07/2018 – EN