37
14
VERSIONS WITH ELECTRIC HEATER
The ANR units are available in versions
equipped with supplementary electric
heaters; these versions are identified
by the letter K; this version is equipped
with a circulation pump, an accumu-
lation tank and a control system that
manages the supplementary electric
heater. Supplementary heaters are
housed within the accumulation tank
for the units from size 0502 up to 0902;
the running of the heater is given over
to an integrated control, on the basis
of the temperature of the water and
the outside temperature. in the HK ver-
sions, a basic control is used, and this
switches on the electric heater when
requested by the control logic.
ELECTRIC ABSORPTION
Version
U.M.
0502 0802 0902
Supplementary heater
AK
kW
6
8
10
Total input power in heater
system
AK
kW
10.9
13.2
17.1
for these models, the heater is not supplied, but is available as an accessory
15
CONTROL LOGIC FOR THE COMPENSATION
SETPOINT
The ANR units have an outside air
temperature compensation function;
this option modifies the setpoint
to work on the basis of the outside
air temperature acting on some
setpoints set in the unit.
During cooling function, the work set
is calculated automatically, the logic by
which this calculation happens is the
following:
• One sets the minimum value
(Cooling set 2) and the maximum
(Cooling set 1) at which you want the
machine to work
• One sets the external temperature
at which one wants the unit to reach
in regards to the maximum set (TAE 1)
During “heating” operation, the work
set is calculated automatically, the
logic by which this calculation happens
is as follows:
• Set a minimum value (Heating set
2) and a maximum (Heating set 1) at
which you want to have the machine
work
• Set an external temperature at
which you want the unit to reach,
respectively, the maximum set (TAE 1)
(°C)
(°C)
SET (F)
SET (H)
SET (G)
SET (I)
SF1
SF2
TF1
TF2
(°C)
(°C)
SET (J)
SET (N)
SET (L)
SET (O)
SC1
SC2
TC1
TC2
and the minimum set (TAE 2)
In this way the unit is able to measure
the temperature of the external air,
and on the basis of this decide which
value to give to the cooling work set.
and the minimum set (TAE 2)
In this way, the unit is able to measure
the temperature of the external air,
and on the basis of this, decide which
value to give to the heating work set.