4 Installation
Installation manual
9
ERGA04~08DAV3
Daikin Altherma – Low temperature split
4P489913-1B – 2017.10
If the pressure…
Then…
Increases
There is moisture in the
system. Go to the next step.
3
Evacuate for at least 2 hours to a pressure on the manifold of
−0.1 MPa (−1 bar).
4
After turning OFF the pump, check the pressure for at least
1 hour.
5
If you do NOT reach the target vacuum or cannot maintain the
vacuum for 1 hour, do the following:
▪ Check for leaks again.
▪ Perform vacuum drying again.
NOTICE
Be sure to open the gas stop valve after piping installation
and vacuuming. Running the system with the valve closed,
the compressor may break down.
4.5
Charging refrigerant
4.5.1
To determine the additional refrigerant
amount
If the total liquid
piping length is…
Then…
≤10 m
Do NOT add additional refrigerant.
>10 m
R=(total length (m) of liquid
piping–10 m)×0.020
R=Additional charge (kg)(rounded in units
of 0.1 kg)
INFORMATION
Piping length is the one way length of liquid piping.
4.5.2
To charge additional refrigerant
WARNING
▪ Only use R32 as refrigerant. Other substances may
cause explosions and accidents.
▪ R32 contains fluorinated greenhouse gases. Its global
warming potential (GWP) value is 675. Do NOT vent
these gases into the atmosphere.
▪ When charging refrigerant, always use protective
gloves and safety glasses.
Prerequisite:
Before charging refrigerant, make sure the refrigerant
piping is connected and checked (leak test and vacuum drying).
1
Connect the refrigerant cylinder to the service port.
2
Charge the additional refrigerant amount.
3
Open the gas stop valve.
4.5.3
To fix the fluorinated greenhouse gases
label
1
Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a
If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a
.
b
Factory refrigerant charge: see unit name plate
c
Additional refrigerant amount charged
d
Total refrigerant charge
e
Greenhouse gas emissions
of the total refrigerant charge
expressed as tonnes CO
2
-equivalent
f
GWP = Global warming potential
NOTICE
In Europe, the
greenhouse gas emissions
of the total
refrigerant charge in the system (expressed as tonnes
CO
2
-equivalent) is used to determine the maintenance
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
2
Fix the label on the inside of the outdoor unit near the gas and
liquid stop valves.
4.6
Connecting the electrical wiring
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
4.6.1
About electrical compliance
Only for ERGA04~08DAV3 (not for 08DAV3A)
Equipment complying with EN/IEC 61000‑3‑12 (European/
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current >16 A and ≤75 A per phase.).
4.6.2
Specifications of standard wiring
components
Component
ERGA04~08DAV3 08DAV3A
Power
supply
cable
MCA
(a)
24.0 A
15.7 A
Voltage
230 V
Phase
1~
Frequency
50 Hz
Wire sizes
Must comply with applicable legislation
Interconnection cable
Minimum cable section of 1.5 mm² and
applicable for 230 V
Recommended field fuse
25 A
16 A
Earth leakage circuit
breaker
Must comply with applicable legislation
(a)
MCA=Minimum circuit ampacity. Stated values are
maximum values (see electrical data of combination with
indoor units for exact values).
4.6.3
To connect the electrical wiring on the
outdoor unit
1
Remove the switch box cover.
