Charging Refrigerant; Precautions And General Guidelines; Calculating The Additional Refrigerant Charge; Complete Recharging - Rotex RRHQ011AAV3 Manuel D'installation

C
HARGING REFRIGERANT
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
(1)
GWP value: 1975
(1)
GWP = global warming potential
Please fill in with indelible ink,
the factory refrigerant charge of the product,
the additional refrigerant amount charged in the field and
+ 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).
6 5
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
greenhouse gases label is supplied with the unit.
Sticking instructions are illustrated on the backside of
that label.

Precautions and general guidelines

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 can not be charged until field wiring has
been completed.
Refrigerant may only be charged after performing the
leak test and vacuum drying (see "Leak test and
vacuum drying" on page 8).
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 cylinders shall be opened slowly.
Always use protective gloves and protect your eyes
when charging refrigerant.
When the power is on, please close the front panel
when leaving the unit unattended.
This unit requires additional charging of refrigerant according to
the length of refrigerant piping connected at the site.
Installation manual
9
1 Factory refrigerant
4
charge of the product:
see unit name plate
1
2 Additional refrigerant
amount charged in the
2
field
3 Total refrigerant charge
3
4 Contains fluorinated
greenhouse gases
covered by the Kyoto
Protocol
5 Outdoor unit
6 Refrigerant cylinder and
manifold for charging
multilingual fluorinated
Make sure to charge the refrigerant in liquid state to the liquid
pipe. Since R410A is a mixed refrigerant, its composition
changes if charged in its gaseous state and normal system
operation would then no longer be assured.
Before charging, check whether the refrigerant cylinder has a
syphon attached or not and position the cylinder accordingly.
Filling using a cylinder
with a siphon attached
Charge the liquid refrigerant
with the cylinder in upright
position.

Calculating the additional refrigerant charge

Piping length is the one way length of gas or liquid piping
whichever is the longest.
For V3 model
It is not necessary to charge additionally if the piping length is under
30 m.
However, if the piping length is under 5 m, a complete recharging of
the unit is required. Refer to "Complete recharging" on page 9.
If the piping length is over 30 m please determine the additional
amount of refrigerant to be charged using the table below.
Table 1: Additional charging of refrigerant <unit: kg>
Refrigerant piping length
3~5 m 5~30 m 30~40 m
(a) (b)
0.5
(a) Recharge required, refer to "Complete recharging" on page 9
(b) Additional charge not required
For W1 model
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 2: Additional charging of refrigerant <unit: kg>
Refrigerant piping length
3~10 m 10~30 m 30~40 m
(a)
1 1.5
(a) Additional charge not required

Complete recharging

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 "Stop valve operation"
on page 6), 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.
In case complete recharging is required (after a leak, etc.), refer to
the table below to determine the necessary amount of refrigerant.
Table 3: Total charging amount <unit: kg>
Refrigerant piping length
3~10 m 10~20 m 20~30 m 30~40 m 40~50 m
V3 2.7 3.2 3.7
W1 2.95 3.45 3.95
RRHQ0011~016AAV3(8) + RRHQ011~016AAW18
Filling using a cylinder
without a siphon attached
Charge the liquid refrigerant
with the cylinder in up-side-
down position.
40~50 m 50~60 m 60~75 m
1.0 1.5 2.0
40~50 m 50~60 m 60~75 m
2 2.5 3.0
50~60 m 60~75 m
4.2 4.7 5.2 5.7
4.45 4.95 5.45 5.95
Outdoor unit for air to water heat pump
4PW50202-1