Western Airconditioning MU ECHOS A, Техническое руководство

Страница: 5 / 52

5
MU ECHOS A
SUMMER/WINTER SELECTION FROM DIGITAL
INPUT
This function is standard on all heat pumps. When the unit is
switched on, a functioning mode must be set, which can be
either the heat pump or the chiller one. Through this remote
contact, the functioning mode can be modified even inside
the building and without a direct access to the microprocessor
control.
FILLING SYSTEM WITH MANOMETER
This accessory allows the automatic load of the hydraulic sys-
tem, the adjustment of the correct working pressure, which
can always be verified by using the manometer, and enables
the continuous maintenance of such pressure, reintegrating
the missing water if necessary.
RS-485 INTERFACE
The growing diffusion of both domotic and BMS (Building
Management System) systems led to the integration of all the
system components under an only supervision. To respond to
this request, the unit can be equipped with a serial board that
allows the correct machine integration in the “building-sys-
tem”, by using MODBUS or CAREL communication protocols..
REMOTE CONTROL USER TERMINAL
Intended for a professional user, it consists in a faithful re-
production of the control panel, from where the unit can be
completely set and all its parameters visualised on the display.
Insertion of passwords, which enable different access levels,
are required to access the parameters.
The type of terminal depends on the control installed on the
unit
USER INTERFACE µAD
By using a simple and intuitive interface, this device allows to
carry out the following main functions:
• Switching on and off the unit
• The unit function mode switch-over from heat pump to
chiller and vice versa
• Enabling the sleep function
• The weekly timer thermostat function with automatic ON/
OFF management of the unit
• Displaying unit functioning conditions
SOFT-STARTER
Blue Box units adopt all the required functioning set-ups and
logics to minimise peak currents. The Soft-Starter accessory
allows a further 40% reduction of normal current peaks,
through an electronic control of the electric motor start-up.
COMPENSATION OF THE SET-POINT according to the external
air temperature
The unit microprocessor control can compensate the set point
in a dynamic way, on variation of the external air temperature.
The compensation can be positive or negative: with positive
compensation, on increase of the air temperature the functio-
ning set also increases. With negative compensation on in-
crease of the air temperature the set decreases. Compensation
can be made either on the summer set point or on the winter
set point (heat pumps).
By default, both summer and winter negative compensation is
set, but this configuration can be modified from the micropro-
cessor keyboard. Unless otherwise specified, default values are
indicated in the graphics below.
SUMMER COMPENSATION - POSITIVE
12 / 7°C
SET POINT 1
25°C
T1 T2
35°C
17 / 12°C
5°C
12 / 7°C
35 / 40°C
SET POINT 1
SET POINT 2
SET POINT 2
SET POINT 1
25°C
T1 T2
35°C
17 / 12°C
5°C
30 / 40°C
SET POINT 2
0°C
T1 T2
15°C
40 / 45°C
5°C
40 / 45°C
SET POINT 2
SET POINT 1
0°C
T1 T2
15°C
5°C
External air temperature
SUMMER COMPENSATION - NEGATIVE
12 / 7°C
SET POINT 1
25°C
T1 T2
35°C
17 / 12°C
5°C
12 / 7°C
35 / 40°C
SET POINT 1
SET POINT 2
SET POINT 2
SET POINT 1
25°C
T1 T2
35°C
17 / 12°C
5°C
30 / 40°C
SET POINT 2
0°C
T1 T2
15°C
40 / 45°C
5°C
40 / 45°C
SET POINT 2
SET POINT 1
0°C
T1 T2
15°C
5°C
External air temperature
WINTER COMPENSATION - POSITIVE
12 / 7°C
SET POINT 1
25°C
T1 T2
35°C
17 / 12°C
5°C
12 / 7°C
35 / 40°C
SET POINT 1
SET POINT 2
SET POINT 2
SET POINT 1
25°C
T1 T2
35°C
17 / 12°C
5°C
30 / 40°C
SET POINT 2
0°C
T1 T2
15°C
40 / 45°C
5°C
40 / 45°C
SET POINT 2
SET POINT 1
0°C
T1 T2
15°C
5°C
External air temperature
WINTER COMPENSATION - NEGATIVE
12 / 7°C
SET POINT 1
25°C
T1 T2
35°C
17 / 12°C
5°C
12 / 7°C
35 / 40°C
SET POINT 1
SET POINT 2
SET POINT 2
SET POINT 1
25°C
T1 T2
35°C
17 / 12°C
5°C
30 / 40°C
SET POINT 2
0°C
T1 T2
15°C
40 / 45°C
5°C
40 / 45°C
SET POINT 2
SET POINT 1
0°C
T1 T2
15°C
5°C
External air temperature