60
INSTALLATION
Menu Par.
No.
Nr. dis-
played
Display
Description
Range
Default
setting
UM
Access
type
Catego-
ry
M1
39
DHW
Tank
Supp
Hyst Dn
Defines the primary circuit's restart hysteresis in modes 1
and 2 of domestic hot water (valid both for cascade and
stand-alone applications).
0…20
5
°C
O
DHW
M1
40
DHW
Tank
Supp
Hyst Up
Defines the primary circuit's shut-off hysteresis in
modes 1 and 2 of domestic hot water (valid both for
cascade and stand-alone applications).
0…20
5
°C
O
DHW
M1
41
DHW
Tank
Hold
Warm
Defines the value of a storage cylinder's delta T required
for temperature maintenance. For instance, if set at
3 degrees, when the storage cylinder is at a set-point
value minus 3 degrees, the thermal module is switched
on at minimum power to maintain the temperature to
the set-point plus hysteresis. If this parameter is kept
the same as Par. 36, this function is inactive and the
thermal module is switched on to the maximum power
envisaged for the DHW circuit.
0…10
5
°C
O
DHW
M1
42
DHW
Priority
Defines the priority type:
0 = Time: time priority between the two circuits defined
by Par. 43;
1 = Off: priority for CH;
2 = On: priority for DHW;
3 = Parallel: parallel priority managed on the basis of
the primary circuit's temperature compared to the heat-
ing circuit's set-point.
0…3
2 = On
I
DHW
M1
43
DHW
Max.
Priority
Time
Establishes the time in minutes during which priority is
alternatively allocated to the DHW and CH circuits when
Par. 43 is set to "time" mode.
1…255
30
Min.
I
DHW
M1
44
DHW
Pump
Overrun
Establishes the overrun time in seconds for the domestic
hot water mode with the boiler in stand-alone opera-
tion; cascaded operation defines the module's overrun
after switch-off due to thermoregulation.
0…900
60
Sec.
I
DHW
M1
45
DHW
Tank
PID P
Defines the proportional term for modulation during
operation of the DHW storage tank.
0…1255
100
O
DHW
M1
46
DHW
Tank
PID I
Defines the integral term for modulation during opera-
tion of the DHW storage tank.
0…1255
500
O
DHW
M1
47
DHW
Tank PID
D
Defines the derivative term for modulation during oper-
ation of the DHW storage tank.
0…1255
0
O
DHW
M1
48
DHW
tank
set-
point
Establishes the DHW storage tank set-point.
40…71
50
°C
U
DHW
M1
92
Fan
Speed
Maxi-
mum
Defines the number of fan rpm at max. power (it de-
pends on the model and is defined at Par. 98).
0…12750
Defined
by Par.
98
RPM
I
General
M1
93
Fan
Speed
Mini-
mum
Defines the number of fan rpm at minimum power (it
depends on the model and is defined at Par. 98).
0…12750
Defined
by Par.
98
RPM
I
General
M1
94
Fan
Speed
Ignition
Defines the number of fan rpm when the boiler is
switched on (it depends on the model and is defined at
Par. 98).
0…12750
Defined
by Par.
98
RPM
I
General
M1
116
Prog.
Input 1.
The value of this parameter is defined by Par. 97.
0 Disabled 1
Water pressure
sensor 2 CH flow
switch 3 Flue
pressure switch
Defined
by Par. 97
I
General
M1
117
Prog
Input 2.
The value of this parameter is defined by Par. 97.
0 Disabled 1 DHW
flow sensor 2
DHW flow switch
3 CH flow sensor
Defined
by Par. 97
I
General
