Domestic Hot Water; Domestic Hot Water Temperature; Solar Integration Priority; Boiler Integration Priority - Immergas SOL 750 V2 Instructions For Installation And Use Manual

4.9 DOMESTIC HOT WATER.

System 5 and 7 adjustment D.H.W. application
(Domestic hot water).

4.9.1 Domestic Hot Water Temperature.

"DHW" parameter (Default value "45°C")
- Value of the domestic hot water temperature.
(Adjustable 20 to 60°C with factory value
45°C).

4.9.2 Solar Integration priority.

"SIP" parameter (Default value "5°C").
(Adjustable 0 to 10°C, whith "0" value to desac-
tivate the features).
If the temperature T3 < (DHV-SIP) and if the
P1 solar pump is off for more than 5 minutes,
the P3 contact will be off. The contact remains
on independently of the P1 Solar pump state.
If the temperature T3 < (DHV-SIP) and if the
antifreeze protection is running, independently
on the P1 pump state, the P3 contact will be off.
The activation of the P3 contact will happen only
if the temperature T3 > DHW and antifreeze
protection is off. (Only for sistem 7).

4.9.3 Boiler Integration priority.

"BIP" parameter (Default value "10°C").
- Lower level for water temperature insi-
de the tank to authorise the start up of
the boiler because the solar energy is not
sufficient. When the temperature inside
the tank is lower than DHW-BIP, P3 is
disabled, irrespective of solar charge (P1).
(Adjustable 0 to 20°C, whith "0" value to de-
sactivate the features).
The output P3 will be only switched ON when
T3 becomes > DHW. (Only for sistem 7).

4.9.4 "P1" parameter disabling solar pump.

If the controller does not control the solar system
you must set the parameter to "Off ". (Available only
with system 5)
4.10 SETTING OFF THE EXTRA
FUNCTIONS.

4.10.1 Thermostat Function.

Available only if extra function "1" is selected
in submenu Extra.
Start:
"EXSt" parameter (Default value "55°C").
- Setting level to start the additional heat (P3)
when the water temperature on the top of tank
(T3) decrease under this setting level. (Adju-
stable 20 to 90°C with factory value 55°C).
Hysteresis:
"EXHY" parameter (Default value "10°C").
- Value of the hysteresis to stop the additional
heat (P3) when the water temperature (T3) is
more than start temperature plus hysteresis
value. (Adjustable 2 to 30°C with factory
value 10°C).
Legionellosis:
"LEGI" parameter (Default value "OFF").
- Number of day to active the legionellosis
function. This function is generally use when
the tank is filled with D.H.W., it consist to
warm with the Extra output (P3) the tank up
to 65°C (T3) if the water inside the tank wias
not reach this level during the number of the
days adjusted. (Adjustable 1 to 7 days).

4.10.2 Cooling Function.

Available only if extra function "2" is selected
on submenu Extra.
Cooling start:
"EXSt" parameter (Default value "75°C").
- setting level to start cooling the tank1 (by
activating P3 output) to another heat storage
for example when the water temperature (T3)
is above this setting level. (Adjustable 20 to
90°C with factory value 75°C).
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