Technical data

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5.8 PROGRAMMING OF HYDRAULIC PARAMETERS
The operations described in this paragraph are necessary only if the appliance is not con-
nected to a DDC or to a CCP.
If the appliance is connected to a CCP/DDC, follow the instructions given in the CCP/DDC
manuals exclusively.
This paragraph explains how to set the hydraulic parameters on the electronic board
of the appliance. Users not familiar with the basic procedures for the use of the board
should refer to Paragraph 4.2 ON-BOARD ELECTRONICS → 19.
To configure the appliance, access menu 3 of the electronic board.
With regard to the hydraulic configuration, six parameters may be set: select the letter E
to exit to the previous menu.
Table 5.10 – Parameters for hydraulic configuration
HYDRAULIC PARAMETER THE DISPLAY SHOWS
Select cold water thermostating 3. 73
Cold water set-point 3. 75
Cold water temperature differential 3. 76
Hot water thermostat control selection 3.160
Hot water setpoint 3.161
Hot water temperature differential 3.162
(EXIT MENU) 3. E
Menu 3 parameters.
Description of parameters:
Water thermostat control, parameters 73 and 160. This parameter takes two val-•
ues: "0" and "1". Value "0" indicates that the appliance's "activation/deactivation"
temperature is to be read by the water probe at the appliance’s INTAKE. Value "1"
indicates that the appliance’s "activation/deactivation" temperature is to be read
by the water probe at the appliance’s OUTLET.
Water set-point, parameters 75 and 161: these parameters set the water tempera-•
ture that, when reached, causes the appliance to be deactivated (when the power
modulation is not active - parameter 181).
Water differential, parameters 76 and 162: these parameters represent an interval •
in degrees that, when added to the set-point, defines the temperature at which the
appliance is reactivated. These parameters are used only if the power modulation
is NOT active (parameter 181).
The appliance functions by heating/cooling the water until it reaches the set-point tem-
perature. At this point, if the power modulation is not active (parameter 181), it switches
off. The temperature of the water goes down again until it reaches the temperature cor-
responding to "set-point + differential"; when this is reached the appliance switches on
again.
Example (heating):
Thermostating: reading from inlet sensor.
Parameter 181: 0 (power modulation NOT active)
Set-point: +40.0°C
Differential: - 2.0° C
The appliance is functioning: the water in the plant heats up until it reaches the •
set-point temperature = +40°C.