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SANITARY HOT WATER: COMPENSATION OF THE SET POINT FOR EXTERNAL TEMPERATURE
The set point can be compensated according to the external temperature in 2 modes:
1. hot season thermal efficiency curve
when the external temperature is high, the sanitary hot water set point is decreased; in this manner the thermal
efficiency is increased
curve A in the graph
the compensation is enabled in the standard configuration
2. compressor operation limit
when the external temperature is particularly cold, the sanitary hot water set point is decreased in order to guarantee
operation of the compressor even near its operation limits
curve B in the graph
the compensation must be enabled during start-up
PARAMETERS INDICATIVE
VALUES
par Description
Meaning
value
12
CextMaxH
Ext. Temp. max. winter correction
15
13
CextMinH
Ext. Temp. min. winter correction
0
73 EnLimiteTExtH
Enable corr. SP Heat for external air limit
0
74 TlimiteMaxH
Outside temperature for max SP Heat
-5
115 CompExtH2OS
Enable comp. for External Temp. of the sanitary hot water set point
0
116 MaxCompH2OS
Maximum outside T correction for sanitary hot water set point
10
152
TextEn
EXT. Air probe presence 1=YES, 0=NO
160 TlimiteMinH
Outside temperature for min SP Heat
-15
175 MinSetLimiteH
Minimum value that can be set for SP Heat
35
T EXT
P 12
P 13
SET POINT
40 °C
37 °C
P 175
P 74
P 160
A
B
T EXT
15°C
7 °C
SET POINT
40 °C
37 °C
35 °C
-2 °C
-15 °C
A
B