Precautions And General Guidelines; Calculating The Additional Refrigerant Charge For Belarias_Ae02; Complete Recharging; Pump Down Operation - Hoval BelariaS11AE02 Manuel D'installation

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 "12.3. Calculating the
additional refrigerant charge for BelariaS_AE02 models" on
page 15.
In case re-charge is required, refer to "12.4. Complete
recharging" on page 15.

12.2. 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 applicable 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 "11. Leak test and vacuum drying" on
page 14).
CAUTION
When charging a system, care shall be taken that its
maximum permissible charge is never exceeded, in view of
the danger of liquid hammer.
WARNING
Refrigerant cylinders shall be opened slowly.
Always use protective gloves and protect your eyes
when charging refrigerant.
DANGER
When the power is on, please close the front panel
when leaving the unit unattended.
Charging with an unsuitable substance may cause
explosions and accidents, so always ensure that the
appropriate refrigerant (R410A) is charged.
This unit requires additional charging of refrigerant according to
the length of refrigerant piping connected at the site.
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.
12.3. Calculating the additional refrigerant charge for
BelariaS_AE02 models
NOTICE
Piping length is the one way length of liquid piping.
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 formula below.
R=(total length (m) of liquid piping – 10 m) x 0.054
R=additional charge (kg)(rounded in units of 0.1 kg)
Installation manual
15

12.4. Complete recharging

In case complete recharging is required (after a leak, etc.), refer to
the information below to determine the necessary amount of
refrigerant.
Total charging amount <unit: kg>
Charge of refrigerant (kg) depends on total liquid piping length.
Total refrigerant charge = 3.4 kg + (total length (m) of liquid piping
– 10 m) x 0.054
Remark: Factory refrigerant charge is 3.4 kg
13. P
This unit is equipped with an automatic pump down operation which
will collect all refrigerant from the field piping and indoor unit in the
outdoor unit. To protect the environment, make sure to perform the
following pump down operation when relocating or disposing of the
unit.
1
Filling using a cylinder
without a siphon attached 2
Charge the liquid refrigerant
with the cylinder in up-side-
down position.
3
4
5
6
7
4 209 843 / 00
NOTICE
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 "9.3. Stop valve
operation" on page 11), 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.
UMP DOWN OPERATION
For more details, refer to the applicable service manual.
WARNING
The outdoor unit is equipped with a low pressure switch or
a low pressure sensor to protect the compressor by
switching it off. Never short-circuit the low pressure switch
during pump down operation!
NOTICE
Before pumpdown is activated be sure that the water
temperature and water volume is sufficiently high.
Pumpdown is done in "cooling mode". See installation
manual of the indoor unit for more details.
Turn on the main power supply switch.
Make sure the liquid stop valve and the gas stop valve are open
(see "9.3. Stop valve operation" on page 11).
Press the pump down button (BS4) on the PCB of the outdoor
unit for at least 8 seconds.
The compressor and outdoor unit fan will start operating
automatically.
Once operation stops (after 3 to 5 minutes), close the liquid stop
valve and the gas stop valve.
The pump down operation is now finished. The remote controller
may display " U4 " and the indoor pump may continue operating.
This is not a malfunction. Even when the ON button on the
remote controller is pressed, the unit will not start to operate. To
restart operation of the unit turn off the main power supply
switch and turn it on again.
Turn off the main power supply switch.
Outdoor unit for air to water heat pump
BelariaS11~16AE02
4PW57796-1 – 10.2010