Laying Coolant Lines; Pressure Test And Filling The Coolant Circuit - Daikin EKHHP300AA2V3 Installation And Operating Instructions Manual

4.5 Laying coolant lines

● Check whether oil trap arc necessary.
– Required if DAIKIN EKHHP is not installed at ground level
with the heat pump exterior unit (Fig. 4-7, H
– At least one oil trap arc must be installed every 10 m dif-
ference in height (Fig. 4-7, 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 4.1).
E
A
A DAIKIN EWQ
B DAIKINEKHHP
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. 4-7 Oil trap arc coolant line
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
≥ 10 m).
O
B
C
D
4 x Set-up and installation

4.6 Pressure test and filling the coolant circuit

RISK OF ENVIRONMENTAL
DAMAGE!
Important information regarding the coolant
used.
The complete heat pump system contains re-
frigerant with fluorinated greenhouse gases
which damage the environment if released.
Coolant type: R410A
GWP* value: 2087,5
* GWP = Global Warming Potential
● Work on fixed cooling systems (heat pumps)
and air-conditioning systems can only be
performed by persons who hold a certificate
of competence for the European Region, in
accordance with the F-Gas Regulation (Ec)
No. 303/2008.
● Fill in the total coolant filling quantity on the
supplied lable 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.
No additional coolant is required for the basic filling.
This is independent of the line length between the in-
ternal unit and external unit.
● Perform pressure test with nitrogen.
– Use nitrogen 4.0 or higher.
– Maximum 40 bar.
● After leak search is complete, completely drain.
● Evacuate the lines (see installation instructions of the heat
pump external unit).
● Open stop valve on exterior unit completely until the stop.
Tighten loosely.
● Reassemble valve caps.
Installation and operating instructions
13