Plumbing Connections - Cola TERMO-FOCUS Serie Installations-, Bedienungs- Und Wartungsanleitung

Wiring diagram for zone system
2.8
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.
Wiring diagram for ZONE SYSTEMS - max. 3 zones
RELAY 1
ZONE 1
ZONE 1
ZONE 2
ZONE 3
ZONE VALVES OR PUMPS
ZONE 1
THERMOSTAT
Multi-zone controller kit code L90K100A

Plumbing connections

2.9
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.
The pellet stove has an internal heating water 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 connect the heating stove to a DHW 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.
For the connection to the DHW circuit it is necessary to install a monostable 3-way valve outside the stove whereas
the circuit is not functional with the DHW pump.
To connect the DHW system 3-way solenoid valve it is necessary to request the optional: supplementary electronic
board model 'I055' for management of commands as well as possible software upgrading.
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.
RELAY 2 RELAY 3
RELAY 4
ZONE 2 ZONE 3
ZONE 2
THERMOSTAT
ZONE 3
THERMOSTAT
TIMER RELAY
INSERTED WITH
DELAYED OPENING
ZONE VALVES
SYSTEM
BOILER ROOM
THERMOSTAT
AUXILIARY SWITCH FOR
CUTTING OFF POWER TO ROOM
THERMOSTATS
CONNECT TO BOILER
CIRCULATING PUMP FEED
TERMINALS
50
PUMP
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