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5 - ELECTRICAL CONNECTIONS
5.13 DOMESTIC HOT WATER REQUEST: SA4
For the production of domestic hot water the 3-way valve must
be present.
When the production of domestic hot water is active, it is not
possible to change the operating mode neither by keypad nor
by SA2 .
Set A
Set B
=
SA4
25
26
Configuration paramenters *
12
Enables the domestic hot water management :
0=No dom. hot water, , 1=domestic hot water and system
mode
361
0=Sanitary priority,1=System priority cool
362
0=Sanitary priority,1=System priority heat
364
Domestic hot water Set Point
*
Parameters accessible through the installer password 115).
The access by pwd is reserved to qualified personnel;
The parameters changes may cause malfunctions.
5.14 SANITARY VALVE - performed by the customer
XC1 main control module terminal block (valve control)
XC2 main control module terminal block
SA4 DHW cycle selector (Customer supplied)
Il set-point è compensato in funzione della temperatura The
set-point is compensated according to the outside temp. In 2
ways :
Heat efficiency
With mild outside temperatures the DHW setpoint is
decreased ; so the heat efficiency increases
curve
A
in the graphic
Compressor operating limit
With severe outside temperatures the DHW set point is
decreased to guarantee the compressor operating also
near its operating limits
curve
B
in the graphic
The corrections don’t interfere in summer operating.
Parameters 106 and 107 are valid also in the climate
correction of the winter system set.
To activate the correction of the set DHW set up:
•
par. 4 = 2 (= 0 not enabled correction )
Configuration paramenters *
359
Enables outside temp. compensation of DHW set point:
1=YesI, 0=no
106
Outside temp.: max. Winter correction
107
Outside temp.: min. Winter correction
360
Max. outside T correction value for DHW setpoint
5.15 DHW SETPOINT CORRECTION
ON OUTSIDE TEMPERATURE - WINTER
107
- 8°C
- 17°C
106
par 360
t ext °C
setpoint
B
A
*
Parameters accessible through the installer password 115).
The access by pwd is reserved to qualified personnel;
The parameters changes may cause malfunctions.
230/1/50 AC MAX. 0.5A
