Immergas 3.022648 Instructions For Installation And Use Manual page 28

You can choose different options for the priority of the
tank loading. For further information, see the priority
parameters of tank "PR Tk".
3.2.3 System 3.
System with 2 tanks, 2 pumps, 1 collectors array and
3 sensors.
With this system you can add an extra function with 1
sensor T4 (PT1000) (Thermostat, Cooling, Antistag-
nation).
T1
P2 P1
T2
The loading of the tank is authorised if the temperature
difference "dt" between the collector (T1) and tanks
(T2,T3) is sufficient.
You can choose different options for the priority of the
tank loading. For further information, see the priority
parameters of tank "PR Tk".
3.2.4 System 4.
System with 1 tank, 1 pump, 1 valve, 2 collector arrays
with 2 different cardinal directions (i.e. East / West)
and 3 sensors. With this system you can add an extra
function with 1 sensor T3 (NTC) (Thermostat, Cooling,
Antistagnation).
T3
The loading of the tank is authorised if the temperature
difference "dt" between the collector (T1, T4) and tank
1 (T2) is sufficient. The valve direction (P2) is done by
the heat collector.
3.2.5 System 5.
System with 1 collector array, 1 solar tank, 2 pumps. It
is not possible to add extra functions.
This system allows domestic hot water to be heated by
solar tank 1 or by two additional generators. Contacts P2
and P3 are used to carry out this function. It is possible to
adjust the various levels according to the charge priority.
See the "DHW" parameters for domestic hot water,
"LEGI" for Legionellosis.
28
T1 T4
P2
P1
T2
T1
T3
P3
P1
P2
T2