DESCRIPTION OF THE COMPONENTS
6.
COOLING CIRCUIT
6.1.
The cooling circuit is contained in an
appropriately insulated compartment in
order to limit vibrations and noise.
Compressor
High efficiency scroll on anti-vibration
mounts, activated by a 2-pole electric
motor with internal heat protection.
Condenser
Unit with (AISI 316) heat plate, insulated
externally with closed cell material to
reduce heat loss.
Liquid indicator
Used to check the refrigerant gas load
and any presence of humidity in the
cooling circuit.
Evaporator
Unit with (AISI 316) heat plate, insulated
externally with closed cell material to
reduce heat loss
.
Dehydrator filter
Mechanical type with ceramic body and
hygroscopic material, able to withhold
impurities and any traces of humidity
present in the cooling circuit, mounted on
compressor intake.
Electronic THERMOSTATIC VALVE
The bi-flow valve, positioned on the liquid
line, modulates the flow of gas to the
evaporator depending on the heat load,
in order to ensure a correct heating level
of the intake gas. The valve has a large
adjustment capacity and always allows
optimal work conditions.
Cycle reversing valve
Inverts the flow of refrigerant in summer/
winter switch-over and vice versa.
FRAME
6.2.
Support frame
Made in hot galvanised sheet steel
with suitable thickness and painted
with polyester powders able to resist
atmospheric agents through time.
The panelling is insulated with sound-
absorbent material that guarantees
particularly silent functioning.
HYDRAULIC CIRCUIT
6.3.
Water filters
3 water filters are present positioned
At evaporator inlet (USER SIDE),
•
At the condenser inlet (GEOTHERMIC
•
APPLICATION / WATER SHEET
SIDE)
At inlet (DHW CIRCUIT)
These allow to block and eliminate any
impurities present in the hydraulic
circuits.
They contain a steel filtering mesh with
holes no bigger than 1 mm.
THEY ARE INDISPENSABLE IN ORDER
TO PREVENT SERIOUS DAMAGE TO THE
PLATE EXCHANGERS.
UTILITIES CIRCUIT
6.3.1.
Circulation pump
Three-speed pump
System side expansion vessel
with nitrogen pre-load membrane
Safety valve
Calibrated at 3 Bar and with piped
discharger that discharges if abnormal
pressure occurs
Differential pressure switch/flow
switch
Positioned between the evaporator inlet
and outlet, it has the task of controlling
that there is water circulation. If this is
not the case it blocks the unit.
DHW CIRCUIT
6.3.2.
Storage tank (lt. 180)
Steel storage tank for the production of
domestic hot water (DHW). With copper
coil always passed by the hot gas leaving
the compressor.
The tank has an internal expansion
membrane (8 litre) and is prepared
with attachments for solar panels and
integrative electric resistances.
The insulation reduces heat loss to a
minimum, thus increasing tank efficiency.
Instantaneous heat exchanger
Unit with (AISI 316) heat plate, insulated
externally with closed cell material
to reduce heat loss, it allows the
instantaneous production of domestic
hot water (DHW).
Mixer valve
The manual type, it allows to adjust
the temperature of the DHW to the
temperature set by appropriately mixing
the hot water coming from the storage
tank with that withdrawn from the
network.
Circulation pump
Three-speed
pump
−
Manual air vent interrupted
Manual air vent valve interrupted to
ease replacement, if necessary.
SAFETY AND CONTROL
6.4.
COMPONENTS
High pressure transducer (TAP)
Positioned on the high pressure side,
it is used to manage the alarms and
management of the condensation
pressure control devices.
High pressure switch (AP)
(with manual rearm)
Placed on the high pressure side of the
cooling circuit, it inhibits functioning of
compressor if abnormal work pressures
occur.
Low pressure transducer (TBP)
Positioned on the low pressure side,
it is used to manage the alarms and
management of the condensation
pressure control devices.
Domestic hot water temperature probe
(DHW)
Positioned inside the storage tank
(DHW). It controls the temperature of
the water and allows the management of
the integrative resistances if envisioned
and to prevent overheating.
Soft-start
Peak current reduction electronic device
AS PER STANDARD FOR SINGLE-PHASE
VERSIONS ONLY
ELECTRONIC CONTROL
6.5.
The microprocessor supplied can
manage control of:
Hydraulic pumps on the system and
−
geothermic circuit sides
Radiant plant temperature probes
−
Domestic hot water (DHW) tank
−
temperature probe
External air temperature probe for
−
the compensation of the system
water set point
System mixer valve
−
Free-cooling kit available as an
−
ACCESSORY
Control kit for the solar integration
−
ACCESSORY
Management of up to two
−
environment areas
For further information please refer to
use manual
8
