ERSQ+ERRQ011~Y1
Outdoor unit for air to water heat pump
4PW49635-1C
Installation manual
12
8.
C
HARGING
REFRIGERANT
To avoid compressor breakdown. Do not charge the refrigerant
more than the specified amount.
■
This outdoor unit is factory charged with refrigerant and
depending on pipe sizes and pipe lengths some systems require
additional charging of refrigerant. See
refrigerant charge" on page 12
■
In case re-charge is required, refer to the nameplate of the unit.
The nameplate states the type of refrigerant and necessary
amount.
8.1.
Important information regarding the refrigerant
used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type:
R410A
GWP
(1)
value:
1975
(1)
GWP = global warming potential
Please fill in with indelible ink,
■
➀
the factory refrigerant charge of the product,
■
➁
the additional refrigerant amount charged in the field and
■
➀
+
➁
the total refrigerant charge
on the fluorinated greenhouse gases label supplied with the product.
The filled out label must be adhered on the inside of the product and
in the proximity of the product charging port (e.g. on the inside of the
service cover).
8.2.
Calculating the additional refrigerant charge
It is not necessary to charge additionally if the piping length is under
10 m.
If the piping length is over 10 m please determine the additional
amount of refrigerant to be charged using the table below.
Table 1:
Additional charging of refrigerant <unit: kg>
Complete recharging
In case complete recharging is required (after a leak, etc.), refer to
the table below to determine the necessary amount of refrigerant.
Table 2:
Total charging amount <unit: kg>
■
When servicing the unit requires the refrigerant
system to be opened, treatment and evacuation of
refrigerant must be done in accordance with relevant
local and national legislation.
■
Refrigerant cannot be charged until field wiring has
been completed.
■
Refrigerant may only be charged after performing the
leak test and the vacuum drying (see above).
■
When charging a system, care shall be taken that its
maximum permissible charge is never exceeded, in
view of the danger of liquid hammer.
■
Charging with an unsuitable substance may cause
explosions and accidents, so always ensure that the
appropriate refrigerant (R410A) is charged.
■
Refrigerant containers shall be opened slowly.
■
Always use protective gloves and protect your eyes
when charging refrigerant.
■
When performing service on the unit requiring the
refrigerant system to be opened, refrigerant must be
evacuated according to local regulations.
■
When the power is on, please close the front
panel when leaving the unit.
NOTE
National implementation of EU regulation on certain
fluorinated greenhouse gases may require to provide
the appropriate official national language on the unit.
Therefore, an additional multilingual fluorinated
greenhouse gases label is supplied with the unit.
Sticking instructions are illustrated on the backside of
that label.
Piping length is the one way length of gas or liquid piping
whichever is the longest.
Refrigerant piping length
3~10 m
10~20 m
20~30 m
30~40 m
40~50 m
(a)
(a) Additional charge not required
0.54
1.08
1.62
2.16
Before recharging, make sure to execute vacuum drying of
the internal piping of the unit as well. To do so, use the
internal service port of the unit. Do NOT use the service
ports located on the stop valve (see
handling stop valve" on page 9
), since vacuum drying can
not be performed properly from these ports.
Outdoor units have 1 port on the piping. It is between the
heat exchanger and the 4-way valve.
Refrigerant piping length
3~10 m
10~20 m
20~30 m
30~40 m
40~50 m
4.5
5.0
5.6
6.1
6.7
3
5
6
2
1
4
1
factory refrigerant charge
of the product:
see unit name plate
2
additional refrigerant
amount charged in the
field
3
total refrigerant charge
4
Contains fluorinated
greenhouse gases
covered by the Kyoto
Protocol
5
outdoor unit
6
refrigerant cylinder and
manifold for charging
