10
Vice versa, when the temperature read by the Probe S1 is less than 50°(Th 56) the 3 ways motorized valve
(P2) exchanges allowing to the gas boiler o any other heat generator to heat the domestic plant.
Plant in independent function with production of hot water
Logic of plant heating:
The pellet heating is the only heat generator for the heating plant and for the sanitary plant (or at least the
connection between the boiler and the gas boiler is done manually by the end user). Then S1 is the probe
that detects the temperature inside the boiler body and controls the start of the P1 circulator once that the
machine reaches 50° (Th19).
Logic for production of Sanitary Hot Water:
The boiler presents a flow (FL) that controls the request of hot sanitary water. Automatically by means of
the flow the central unit sends the output to the plates exchanger through the motorized valve (P2) for the
immediate production of hot water. Moreover, when the boiler perceives the demand of hot water brings
the temperature to 70# (Th 21-lh21) in order to guarantee a constant production of hot water.
In this case, if the installed boiler produces also hot water, the flow, the exchanger and the motorized valve
are already originally present inside the boiler.
Configuration 2 – P26=2 – Boiler Sanitary water
In order to set the boiler ready to heat a loading tank for sanitary hot water it is necessary to:
IN CASE THAT THE ORDERED MODEL WAS (HEV_-P) ALL THE FOLLOWING SETTINGS HAVE BEEN ADJUSTED
BY DEFAULT FROM THE PRODUCER
Enter the System Menu - Settings and set technical Parameter P26 to 2
Connect the clamps 35 and 36 (IN3) from the electronic central unit to an optional Probe (NTC of
10K @ 25° C) and put it in a cockpit of the boiler in order to allow to the central unit to detect
the temperature inside the boiler.
Enter the System Menu – Settings and set technical Parameter P75 to 31
Set the Puffer thermostat on the User’s Menu – Control heating – the desired water temperature
inside the boiler Thermostat (default setting 55°)
Connect the exit A2 of the central unit with the clamps of the 3 ways motor valve P2.
(If it were the version prepared for working with the sanitary boiler, the 3-way valve is already present
inside the boiler and pre-wired by the factory)
Содержание HEVO 14
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