To Determine The Additional Refrigerant Amount; To Determine The Complete Recharge Amount; To Charge Refrigerant; To Fix The Fluorinated Greenhouse Gases Label - Daikin Altherma EHVH04S18CB3V Installer's Reference Manual

7.7.3 To determine the additional refrigerant
amount
If the total liquid
piping length is...
≤10 m Do NOT add additional refrigerant.
>10 m R=(total length (m) of liquid
piping⁠ – ⁠ 1 0 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.
7.7.4 To determine 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.
7.7.5

To charge refrigerant

WARNING
▪ Only use R410A as refrigerant. Other substances may
cause explosions and accidents.
▪ R410A contains fluorinated greenhouse gases. Its
global warming potential (GWP) value is 2087.5. Do
NOT vent these gases into the atmosphere.
▪ When charging refrigerant, always use protective
gloves and safety glasses.
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 "13.2 To pump down" on page 83
7.7.6 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
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1A – 2016.02
Then...
for more details.
a
kg b
kg c
d
kg
e
tCO eq
2
-equivalent
2
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.
7.8

Connecting the water piping

7.8.1

About connecting the water piping

Before connecting the water piping
Make sure the outdoor and indoor unit 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 pressure relief valve to the drain.
3 Filling the water circuit.
4 Filling the domestic hot water tank.
5 Insulating the water piping.
6 Connecting the recirculation piping.
7.8.2 Precautions when connecting the water
piping
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
7.8.3

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 position. Orientation of the integrated drain and fill valves is
important for servicing.
1 Install the shut-off valves on the water pipes.
c a
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)
7 Installation
d b
Installer reference guide
37