Hydraulic Connections; Wsa Internal Hydraulic Circuit; Standard Wsa (Version Without Hydronic Kit); Wsa External Hydraulic Circuit - AERMEC WSA Serie Manual Técnico De Instalación Y Mantenimiento

20. 1 WSA INTERNAL
HYDRAULIC CIRCUIT
The unit is supplied in different ver-
sions:
– "Standard WSA (only evaporator,
condenser without hydronic kit)" (fig.
19. 1 .2)
- Plate type exchangers
- Water inlet and outlet sensors
(SIW - SUW).
- Victaulic connections

20.2 WSA external hydraulic circuit

(NOT SUPPLIED)
The selection and installation of com-
ponents outside the WSA should be
carried out by the installer, who should
work according to the technical code
of practice and in compliance with the
legislation in force in the country of de-
stination.
Anyway, the following installation is re-
commended:
- Filter 1 evaporator inlet, 1 conden-
ser inlet
- The presence of the filter should
be considered obligatory, AND ITS
REMOVAL WILL MAKE THE GUA-
RANTEE VOID. It must be kept
clean, so it is necessary to check
its clean state after the installa-
tion of the unit, and check it regu-
larly
- Pump
- Inertial accumulation tank
- Charging unit
- Expansion tanks
- Safety valve
28

HYDRAULIC CONNECTIONS

20
20. 1 .2 Standard WSA (VERSIONS without HYDRONIC KIT)
2
KEY
1 Evaporator (plate type exchanger)
2 Condenser (plate type exchanger)
- Drain valve
- Flow switch
- It is obligatory to carry out the
calibration of the flow switch on
the flow rate values requested by
the system: if this is not done, the
guarantee will be considered void
- Manual interception valves
- The installation of the manual
interception valves between the
unit and the rest of the system
should be considered obligatory
for all WSA models and for all the
hydraulic circuits that concern the
chiller itself (desuperheaters, total
recovery): if this is not done, the
guarantee will be considered void.
- Flexible high-pressure joints
- Pressure gauge
- The hydraulic piping for connection
to the machine must be properly
scaled for the actual water flow
rate required by the system when
working. The water flow rate to the
heat exchanger must always be
constant.
1
CAUTION
Carefully wash the system, before con-
necting the heat pump. This is done in
order to eliminate possible residues
such as welding spatter, waste, rust
or any other impurity from the pipes.
Otherwise, these materials may re-
main inside the unit and cause failures.
The connection pipes must be properly
supported so as not to burden the unit
with their weight.