HWA1-A & HWA1-H
Chillers and Air/Water heat pumps with axial fans
10
FIELDS/VARIANTS
TABLE
Filed
Variant
Description
RV
0
Cooling only versions for cooling operation
9
Heat pump versions for heating and cooling operations
PT
1
Model 140
3
Model 147
5
Model 260
6
Model 273
7
Model 285
TA
0
The version of 2 pipes provides only plant circuit water Inlet and water outlet.
2
Version of 4 pipes with total condensation heat recovery in cooling mode, supplied also with GI module with high pressure transducer and EC
circulator for condensation pressure control and defrost termination control.
3
The version with desuperheater is equipped with a heat exchanger on hot gas for heat recovery (DHW production), GI module with high
pressure transducer and EC circulator for condensation pressure control and defrost termination control.
4
Versions with coils and free-cooling valve for cooling only versions.
CI
0
Provided with only the connection pipes to the heat exchanger with flow switch, safety, air vent and discharge valves and inlet manometer.
7
The configuration with integrated on/off pump requires adding an AC pump, suitable for the use of chilled water and directly managed by
the unit on-board controller.
8
The configuration includes 2 integrated AC pumps with alternate operation to get optimized wear of the two pumps with the addition of a
pumps management module and eventual 3-way valve with DHW temperature sensor.
KS
0
Without storage tank
1
With integrated technical storage tank of 165 liters.
KA
0
Unit without anti-freeze kit, standard for cooling only units.
1
The anti-freeze kit employs a self-regulating heating cable wrapped around the basement of the unit near the condenser and two in PET
electric heaters placed on the faces of the plate heat exchanger (available only for heat pump models).
2
Similar to the previous configuration with crankcase heater, for cold-only versions (they are standard on heat pump models)
3
Crankcase heaters, for cooling only versions (are standard in heat pump versions)
GI
0
Unit without plant management module.
1
The additional module implements some important functions for the plant system management, such as domestic hot water DHW, double
setpoint, management of plant electric heaters, double compressor management in sanitary mode for high temperature of air etc.
2
Enablement of Modbus registers for remote interfacing.
3
Similar to the variant Gi=1, with in addition the enablement of Modbus registers for remote interfacing.
FAN
0
Unit provided with AC fan motor on off 1 speed, condensation regulation and defrost termination pressure.
1
Unit equipped with EC fan motor with speed modulating regulation for condensation control and defrost termination pressure.
2
2-speeds AC fan motor (for chilled water cooling only versions) with condensation pressure control.
SIL
0
Standard unit
1
Silenced unit (with SL accessory) provided with thermo-acoustic insulator on the compressors.
2
Super silenced unit (with SSL accessory) provided with a thermo-acoustic insulator on compressors and with the factory mounted AxiTop
device for noise reduction up to 3 dB (A), the EC modulating fan motor is also supplied for cooling operation up to -15°C.
TR
0
Coil with copper pipes and aluminium fins especially for heat pump utilization.
1
Finned-tube condenser with anticorrosion treatment.
2
Microchannel condenser, available only for the versions without reverse cycle.
The cooling only versions 0271 and 0285 and in the heat pump versions 0285 are provided with EC FAN motor.
By default the Gi2 are configured in the versions with TA2, TA3, TA4 and CI2.
6.1
OPTIONAL ACCESSORIES
AG
Anti-vibration rubber pad to be installed in the chassis of the unit for possible shock absorption.
GR
Protective grill for aluminum copper plate coils.
Hi-T
Remote control panel.
IMPORTANT NOTE
ONLY THE OPTIONAL ACCESSORIES CAN BE REQUIRED AFTER THE ORDER OF THE UNIT,
WHILE THE FACTORY INSTALLED ACCESSORIES CAN NOT BE REQUIRED AFTER THE ORDER OF THE UNIT.
