Arca Caldaie ASPIRO DUO TECH, Установка, эксплуатация и обслуживание

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9.4.1. General connection diagram for heating purposes with "puffer" tank and hot sanitary water storing
tank equipped with double coil type heat exchanger and solar panels
Key:
PI
"Puffer" tank pump S1 Solar panels temperature sensor
PR Bypass pump S2
Hot sanitary water storing tank temperature
sensor - bottom
PB Hot sanitary water tank circuit pump S3
Hot sanitary water storing tank temperature
sensor - top
PS Solar panels pump S4 Heating system delivery temperature sensor
IR Heating system S5 Heating system return temperature sensor
V Non return valve
WARNING:
In this kind of heating system the main circulation pump (PI) is used to charge the "puffer" with heat, while the
"heating system circulation pump" shown in the diagram is the pump which delivers heat to the building.
Therefore, this pump will have to be controlled outside the main boiler control panel and wired directly to the
room thermostat.
The boiler control panel terminals nr. 16 and 17 must be wired together to have the "puffer" tank heat
charging pump operating correctly in function of the boiler temperature parameters.
We recommend installing a minimum "puffer" tank temperature thermostat (set to 50 / 60°C), which must be
mounted in the top part of the inertial tank and directly wired to the room thermostat in order to have the
"main heating system circulation pump" turned on only if the "puffer" tank has reached the temperature set on
the thermostat.