8
Giacomini S.p.A.
Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia
+39 0322 923372 - giacomini.com
Preheating Function
The preheating function has the purpose of keeping the domestic water heat exchanger hot so as to shorten the initial
adjustment time required to reach the setpoint temperature, thus providing greater comfort.
The function can be enabled/disabled by setting the t12 parameter via remote control.
When enabled, during the stand-by stage in SUMMER or WINTER mode, the function continuously monitors the domestic
water probe and when the corresponding temperature falls below the DHW setpoint differential threshold of -8 °C, a domestic
water cycle is forced on with power supplied at 30% until the DHW temperature reaches the adjustment value of the function
corresponding to the DHW setpoint -2 °C. There is a time limit of 2 minutes for the function to reach this value.
If the DHW temperature fails to reach the setpoint threshold value after this time, the function is interrupted and inhibited for
a period of 30 minutes.
WARNING.
When the DHW preheating function is enabled, plan to install a compensation device (e.g., expansion vessel/water hammer damper).
Screed Heating Function
The screed heating function facilitates the installation of low-temperature floor systems.
It is supported in the WINTER and HEAT ONLY operating modes.
The function is enabled/disabled by setting the t13 parameter via remote control.
Once activated, it forces a request for operation in heating mode at a setpoint established by the t14 parameter, for a fixed
time interval of 72 hours.
Subsequently, a new setpoint will be forcibly set with the value defined by the t15 parameter, for a time interval corresponding
to the value established by the t16 parameter, expressed in days.
Remote control Function
NOTE.
To enable parameter programming, please refer to the remote-control manual.
PARAMETER
RANGE
DESCRIPTION
DEFAULT CONFIGURATION
SETTINGS
t00
0/1
Heat exchanger configuration
0
0=single, 1=double
t01
0/1
Heating range
1
0=standard, 1=reduced
t02
0/1
dr. group configuration
0
0=combined, 1=domestic water only
t03
0/120
Mixing valve time
12
seconds
t04
0/30
KD for OTC
30
t05
0/1
Enabling of H2O pressure switch
1
0=enabled, 1=disabled
t06
0/240
CH anticycle timming
30
seconds
t07
0/1
OVT type DHW
0
0=fixed, 1=correlated to the Setpoint
t08
0/1
OVT type CH
0
0=fixed, 1=correlated to the Setpoint
t09
0/1
Enabling safety valve
1
Screed heating timing final phase
t10
0/60
DHW rq probe configuration
0
0=contact, 1=fluxmeter
t11
0/1
Disabling TA remotely
0
Screed heating timing final phase
t12
0/1
Enabling preheating
0
0=disabled, 1=enabled
t13
0/1
Enabling screed heating
0
0=disabled, 1=enabled
t14
25/34
Screed heating starting temperature 72 hours
25
°C
t15
35/45
Screed heating ending temperature
45
°C
t16
4/10
Screed heating timing final phase
4
days
