Plumbing Connections - Cola AQUAPLUS 23 Installations-, Bedienungs- Und Wartungsanleitung

2.8 Wiring diagram for zone system
Before installing the heating stove in the house, check the type of heating system;
in case of several zones, a special electronic controller for multi-zone circuits, available as an optional, must be
installed. This is to prevent overheating of the heating chamber due to possible simultaneous closing of the zone
valves and consequent stopping of hot water flow.

2.9 Plumbing connections

The heating capacity of the unit must be previously established by calculating the building's heat requirement
according to current regulations. The system must be provided with all the components for correct and regular
operation; in fact according to the rules of proper workmanship in installation, shutoff valves and non-return valves
allowing the stove to be isolated in case of maintenance and/or checks, must be interposed between the stove and
the heating system.
Proceed slowly during heating chamber water filling, to allow correct and complete evacuation of the air from the
vent ( for a closed vessel system from 1.1 to 1.5 bar ).
The pellet stove has an internal heating circuit complete with circulating pump, safety valves, air vent, temperature
probes and pressure transducer.
If the heating system is managed in zones a multi-zone controller, available on request, must be installed.
To display the boiler's water circuit pressure, just press the control panel button P5 for 3 seconds.
During stove transport the gaskets in the plumbing system may come loose and/or break, causing water
leaks during normal operation; therefore make sure to check the tightness of the circulating pump and
heating chamber connection rings and vent the residual air during water filling and after the first hours of
operation.
To connect the stove to a heating system it is advisable to contact a competent technician in order to best optimise
the plumbing connections and the performance of the entire system without compromising stove operation.
2.9.1 System water filling
After carrying out the plumbing connections, it is possible to FILL the unit and system:
- open all the air vent valves of the radiators - manifolds - boiler and system;
- open the valve three-way motorized heating sanitary through lever A;
- open the water filling cock gradually, making sure the vent valves work properly;
- fill the system slowly, to allow proper and complete evacuation of the air from the vent, bringing the circuit under
pressure (for a closed vessel system from 1.1 to 1.5 bar);
- when finished, close the filling cock and the valve three-way motorized through lever A;
- make sure all vent valves have discharged the air from the system.
- to display the boiler's water circuit pressure, just press the control panel button P5 for 3 seconds.
The creation of a heating system with installation of the boiler must comply with all the applicable
National, Regional, Provincial and Local regulations in the country where the system is installed.
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AQUAPLUS 23