Immergas 3.022648 Instructions For Installation And Use Manual page 29

3.2.6 System 6.
System with 1 collector array, 1 solar tank, 2 pumps, 1
external heat exchanger. With this system you can add
an extra function with 1 sensor T3 (NTC) (Thermostat,
Cooling, Antistagnation).
T1
P1
P2
The loading of the tank is authorised if the temperature
difference "dt" between the collector (T1) and tank 1
(T2) is sufficient. You can choose a time delay for the start
up of the pump between the heat exchanger and the tank
1. The default value is 1 minute to give the heat exchanger
time to heat up. See time delay parameter "P2dy" on P2.
3.2.7 System 7.
System with 1 collector array, 1 solar tank, 1 pump. It is
not possible to add extra functions.
T1
P1
The loading of the tank 1 is authorised if the temperature
difference "dt" between the collector (T1) and tank 1
(T2) is sufficient.
This system allows warming the domestic hot water, value
set by the probe T3, by the solar tank 1 or by an additional
boiler. The P3 contact is used to do this function.
T2
T3
P3
T2
It is possible to adjust the various levels according to the
loading priority.
See the parameters "DHW" for domestic hot water tem-
perature, "SIP" for solar integration priority and "BIP"
for boiler integration priority to correctly set operation
of the P3 contact.
3.2.8 Extra Function.
According to the system chosen, the choice and the
schematic representation of the Extra function will be
not the same for all systems.
3.2.9 Extra 1: Thermostat function.
This function is generally used to associate additional
heat with your system, to warm up your primary solar
tank if solar energy is lacking. (See the Extra Function
part).
Recommendations:
Control for gas boiler or for other heating elements such
as electrical resistor inside the solar tank.
N.B.: in this case you must connect a relay to activate
the output.
- Extra 1 used with "System 1";
T1
P1
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T3
P3
T2