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7
Installation
Installer reference guide
32
ERLQ004~008CA + 08S18CA3VF
Daikin Altherma low temperature split
4P3662261 – 2014.01
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.
7.4.13
To determine the additional refrigerant
amount
If the total liquid piping length
is…
Then…
≤10 m
Do NOT add additional
refrigerant.
>10 m
Add 20 g refrigerant per extra
meter (above 10 m).
7.4.14
To calculate the complete recharge
amount
INFORMATION
If a complete recharge is necessary, the total refrigerant
charge is: the factory refrigerant charge (see unit name
plate) + the determined additional amount.
7.4.15
To charge refrigerant
WARNING
▪ Only use R410A as refrigerant. Other substances may
cause explosions and accidents.
▪ R410A contains fluorinated greenhouse gases covered
by the Kyoto Protocol. Its global warming potential
value is 1975. Do NOT vent these gases into the
atmosphere.
▪ When charging refrigerant, always use protective
gloves and safety glasses.
CAUTION
Do NOT charge the refrigerant more than the specified
amount, to avoid compressor breakdown.
Other guidelines:
▪ Only use tools exclusively for R410A to ensure pressure
resistance and to prevent foreign materials from entering into the
system.
▪ Charge the liquid refrigerant as follows:
If
Then
A siphon tube is present
(i.e., the cylinder is marked with
"Liquid filling siphon attached")
Charge with the cylinder upright.
If
Then
A siphon tube is NOT present
Charge with the cylinder upside
down.
▪ Open refrigerant cylinders slowly.
▪ Charge the refrigerant in liquid form. Adding it in gas form may
prevent normal operation.
1
Connect the refrigerant cylinder to the service port.
2
Charge the additional refrigerant amount.
3
Open the gas stop valve.
If pump down is needed in case of dismantling or relocate the
system, see
"13.1 To pump down" on page 70
for more details.
7.4.16
To fix the fluorinated greenhouse gases
label
NOTICE
National implementation of EU regulation on certain
fluorinated greenhouse gases may require to provide the
appropriate official language on the unit. Therefore, an
additional multilingual fluorinated greenhouse gases label
is supplied with the unit.
1
Fill in the label as follows:
d
c
b
a
a
From the multilingual fluorinated greenhouse gases label
peal 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
2
Fix the label on the inside of the outdoor unit near the gas and
liquid stop valves.
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