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Charge the liquid
refrigerant with the
cylinder in upright
position.
▪ 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 74 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:
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.
7.5
Connecting the water piping
7.5.1
To connect the water piping
NOTICE
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit.
To facilitate service and maintenance, 2 shut-off valves are provided.
Mount the valves on the water inlet and on the water outlet. Mind
their the position. Orientation of the integrated drain and fill valves is
important for servicing.
1 Install the shut-off valves on the water pipes.
a
c
ERLQ004~008CAV3 + EHVH/X04+08S18CA + EHVH/X08S26CA
Daikin Altherma - Low Temperature Split
4P313775-1C – 2012.11
Charge the liquid
refrigerant with the cylinder
in up-side-down position.
a
b
c
d
d
b
a Space heating/cooling water out
b Space heating/cooling water in
c Domestic hot water out
d Domestic cold water in (cold water supply)
NOTICE
It is recommended to install shut-off valves to domestic
cold water in and domestic hot water out connections.
Shut-off valves are field supplied.
NOTICE
To avoid damage to the surroundings in case of water
leakage, it is recommended to close the cold water inlet
stop valves during periods of absence.
2 Screw the indoor unit nuts on the shut-off valves.
3 Connect the domestic hot water in and out pipes to the indoor
unit.
NOTICE
▪ A drain device and pressure relief device should be
installed on the cold water inlet connection of the
domestic hot water cylinder.
▪ To avoid back siphonage, it is recommended to install a
non-return valve on the water inlet of the domestic hot
water tank in accordance with the applicable legislation.
▪ It is recommended to install a pressure reducing valve
on the cold water inlet in accordance with the
applicable legislation.
▪ An expansion vessel should be installed on the cold
water inlet in accordance with the applicable legislation.
▪ It is recommended to install the pressure relief valve on
higher position as top of the domestic hot water tank.
Heating of the domestic hot water tank causes water to
expand and without pressure relief valve the water
pressure inside the tank can rise above the tank design
pressure. Also the field installation (piping, tapping
points, etc.) connected to the tank is subjected to this
high pressure. To prevent this, a pressure relieve valve
needs to be installed.
The overpressure prevention depends on the correct
operation of the field installed pressure relief valve. If
this is NOT working correctly, overpressure will deform
the tank and water leakage may occur. To confirm
good operation, regular maintenance is required.
7.5.2
To connect the pressure relief valve to the
drain
The blow out of the pressure relief valve is coming out of the
backside of the unit.
a
a Pressure relief blow-out
7 Installation
Installer reference guide
33
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