Laying Coolant Lines; Pressure Test And Filling The Coolant Circuit; Filling The System With Water; Checking The Water Quality And Adjusting The Pressure Gauge - Daikin Altherma EHS Serie Manual De Instrucciones E Instalación

4.6 Laying coolant lines

Check whether oil trap arc necessary.
– Required if Daikin Altherma EHS(X/H) is not installed at
ground level with the heat pump exterior unit (fig. 4-44,
H 10 m).
O
– At least one oil trap arc must be installed every 10 m dif-
ference in height (fig. 4-44, H = clearance from oil trap arc
to oil trap arc).
– Oil trap arc only required in gas line.
Install lines with bending unit and an adequate clearance to
electrical lines.
Only solder with light nitrogen flow (hard soldering only).
Do not apply heat insulation to joins until after start-up
(for purposes of leakage search).
Establish flange connections and connect to the units.
( Pay attention to the tightening torque, see section 10.3
"Tightening torque").
A Exterior heat pump unit (ERLQ)
B Daikin Altherma EHS(X/H)
C Gas line
D Liquid line
E Oil trap arc
H Height to 1st oil trap (max. 10 m)
H Height difference between heat pump exterior unit and heat pump
O
interior unit.
Fig. 4-44 Oil trap arc coolant line
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1441399_02 – 01/2021 – EN
4 x Set-up and installation

4.7 Pressure test and filling the coolant circuit

RISK OF ENVIRONMENTAL
DAMAGE!
Important information regarding the
coolant used.
The entire heat pump system contains
refrigerant with fluoridated greenhouse
gases which damage the environment if
released.
Coolant type: R410A
GWP* value: 2087,5
* GWP = Global Warming Potential
Fill in the total coolant filling quantity
on the supplied label on the heat
pump exterior unit (for information
consult the installation instructions for
the heat pump exterior unit).
Never allow coolant to be released
into the atmosphere - always suction
it off and recycle using a suitable
recycling device.
Perform pressure test with nitrogen.
– Use nitrogen 4.0 or higher.
– Maximum 40 bar.
After leak search is complete, completely drain.
Vacuum lines.
– Pressure to be achieved: 1 mbar absolute.
– Time: minimum 1 h
Check whether additional coolant is needed for primer filling,
fill where necessary.
Open stop valve on exterior unit completely until the stop.
Tighten loosely.
Reassemble valve caps.
Check whether the storage tank temperature sensors t
and t are inserted to a depth of 80 cm.
DHW2

4.8 Filling the system with water

Only fill the Daikin Altherma EHS(X/H) following the sequence
stated below and once all installation work is complete.
4.8.1 Checking the water quality and adjusting the
pressure gauge
Observe the information on the water connection and water
quality in accordance with section 4.4.
The correct minimum pressure marking must be set on the
pressure gauge installed by the customer before filling the
system for the first time:
Rotate the pressure gauge glass in such a way that the
minimum pressure mark corresponds to the system
height +2 m (1 m water column = 0.1 bar).
DHW1
Installation and operating instructions
39