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CAUTION
To avoid compressor breakdown, do NOT charge more
than the specified amount of refrigerant.
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.
If pump down is needed in case of dismantling or relocating the
system, see
"14.2 To pump down" on page 84
7.8.7
To fix the fluorinated greenhouse gases
label
1 Fill in the label as follows:
Contains fluorinated greenhouse gases
RXXX
1
=
f
GWP: XXX
=
2
2
1
+
1
2
=
GWP × kg
=
1000
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
f
GWP = Global warming potential
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes
CO
-equivalent) is used to determine the maintenance
2
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.
7.9
Connecting the water piping
7.9.1
About connecting the water piping
Before connecting the water piping
Make sure the outdoor unit, indoor unit and gas boiler are mounted.
Typical workflow
Connecting the water piping typically consists of the following
stages:
1
Connecting the water piping of the indoor unit.
2
Connecting the water piping of the gas boiler.
3
If necessary, performing a wiring error check. See
perform a wiring error check" on
CHYHBH05+08AA + EHYKOMB33A
Daikin hybrid for multi heat pump – heat pump module
4P471761-1A – 2017.10
for more details.
a
kg
b
kg
c
d
kg
e
tCO
eq
2
-equivalent
2
"10.4.1 To
page 70.
INFORMATION
▪ You only have to perform a wiring error check if you are
not sure that the electrical wiring and piping is
connected correctly.
▪ If you perform a wiring error check, the hybrid for multi
indoor unit will not operate by heat pump for 72 hours.
During this time, the gas boiler will take over the hybrid
operation.
4
Filling the space heating circuit.
5
Filling the domestic water circuit of the gas boiler.
6
Filling the domestic hot water tank.
7
Insulating the water piping.
7.9.2
Precautions when connecting the water
piping
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
7.9.3
Connecting the water piping of the indoor
unit
To connect the water piping for space heating
NOTICE
In case of old heating installations, it is recommended to
use a dirt separator. Dirt or sediment from the heating
installation can damage the unit and reduce its lifetime.
NOTICE
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit.
NOTICE
▪ It is recommended to install shut-off valves to space
heating in and space heating out connections. Shut-off
valves are field supplied. They allow service to the unit
without draining the whole system.
▪ Foresee a drain/fill point to drain or fill the space
heating circuit
NOTICE
Do NOT install valves to shut down the entire emitter
system (radiators, floor heating loops, fan coil units, ...)
instantly if this can result in an immediate short circuit of
the water flow between the outlet and the inlet of the unit
(for example via a bypass valve). This may trigger an error.
1 Connect the water inlet connection (Ø22 mm).
2 Connect the water outlet connection (Ø22 mm).
b
a
a
Water inlet
7 Installation
Installer reference guide
31
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