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English 05/09
ACCURATE AX - AW - AD - AT - AF
The pressure test points for the air flow (F3) and dirty filter (F4)
differential pressure switches are connected in parallel; (on OVER
units)
- the positive pressure test point is located on the right-hand
side of the base of the unit;
- the negative pressure test point is located in a position for
measuring the pressure upstream of the fan; (on UNDER units)
- the positive pressure test point is located behind the electrical
panel, upstream of the air filter;
- the negative pressure test point is located in a position for
measuring the pressure upstream of the fan;
Press
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test poi
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Press
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test poi
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Press
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test poi
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Press
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test poi
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RIGHT-HAND SIDE
RIGHT-HAND SIDE
FRONT OF
THE UNIT
FRONT OF
THE UNIT
Q.E.
Q.E.
INSTRUMENTS AND ALARMS
A
I
U
The air-conditioner is fitted with the following instruments:
- High pressure switch/switches F1
with manual reset (one
on each refrigerant circuit);
- Low pressure switch/switches F2
with automatic reset
(one on each refrigerant circuit);
- Air flow sensor F3 and dirty
filter sensor F4 (differential
pressure switches);
- Temperature sensor BT2 (versions C and T) or room tempera-
ture and humidity sensor BH1 (on the units with humidity con-
trol);
Some versions, in addition, have the following sensors:
- Safety thermostat TH1
(in the versions with electric
heaters), with the reset button accessible on the right-hand
side of the electrical panel.
In addition, the following optional devices may be available:
-
Flood sensor made up of:
a) FSD device to be inserted in the special socket on the elec-
trical panel;
b) FLOE sensor (or sensors, connected in parallel) to be posi-
tioned at the points monitored;
-
Fire and smoke sensors
SFFS and SFFF;
-
Hot water temperature sensor,
for reading and enabling
post-heating with hot water;
-
Outlet air limit temperature sensor (BT1),
installed as
described in the "Installation manual".
1
2
3
4
5
6
7
8
9
10
11
12
13
1 main board
2 disconnecting switch
3 electric heaters
4 radial fan and inverter
5 compressor
6 dewatering filter
7 liquid valve
8 flow indicator
9 thermostatic valve
10 humidifier
11 dehumidification valve
12 hot water coil valve
13 temperature-humidity probe
