Accorroni HUB RADIATOR MINI 11.0, Installation Manual

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8
Fig. 8
view from above
side view
A E
D
C
A
B
LEGEND:
(
A = 15 cm) (B = 50 cm) (C = 15 cm)
(D = 60 cm) (E = 100 cm)
3.3 ROOF INSTALLATION (Fig. 9)
Fig. 9
- If the outdoor unit is installed on a roof, be sure to level the unit.
Make sure the roof structure is appropriate for mounting of the unit.
- For mounting on a sloping roof it is recommended to use the
appropriate shelf shown below (see Chap. 4.9 ACCESSORIES
HUB RADIATOR MINI XL)
ANCHORING BRACKET FOR INCLINED ROOF
FOR EXTERNAL BOOSTERS MOD. HR 3.0 - 7.8 - 9.0
RUBBER ANTI-VIBRATION SYSTEMS INCLUDED
- If the outdoor unit is installed on the roof or external walls,cthis
could cause excessive noise and vibration and be classified as
an unsuitable installation for the service.
3.4 ELIMINATION OF AIR WITH THE VACUUM PUMP (Fig 10)
The air and humidity in the refrigeration system can cause
undesirable effects as indicated below:
- Increased pressure in the system.
- Increase in absorbed current.
- Decrease in the efficiency of the refrigerant.
- Freezing and obstruction of the capillary pipes.
- Corrosion of parts of the refrigeration system.
In order to avoid the above, the indoor assembly and pipes, placed
between the indoor and outdoor assemblies, must be tested
for leaks and purged to remove non-condensing elements and
moisture from the system. Check that each pipe (both the gas and
liquid side pipes) between the internal and external groups has
been connected correctly and that all the wiring required for testing
has been carried out.
- Remove the valve cap on the outdoor assembly.
- Make sure that at this point both the gas valves and the
liquid remain closed.
- Check the length of the hose and the relative amount of
refrigerant, for correct charging, check the superheat value.
When changing the location of the unit, bleed with the vacuum
pump.
Make sure that the refrigerant inside the air conditioner is always in
a liquid state.
The outdoor unit is supplied with a charge of R410A refrigerant gas
suitable for ensuring proper operation up to a maximum distance of
5 meters from the indoor unit.
If you decide to install the 2 units at a distance greater than 5 meters,
be sure to add 20 g of refrigerant gas for each additional meter of
piping (table 4).
For example, if there are 7 meters of piping between the outdoor
and indoor units, add 40 g of R410A gas.
In any case, never exceed 15 meters.
Add only after vacuuming the pipes connecting the 2 units, after
which you can proceed with opening the gas taps, mounted on the
machine.
Fig. 10
3.5 EVACUATION
Connect the end of the charging hose to the vacuum pump to
evacuate the air from the pipes of the indoor unit. Check that the
“LOW” knob of the pressure gauge valve is open.