Installation and user manual
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16
5.2 Warnings
Always check the effectiveness of the earthing of the electrical system to which the thermal assembly is
going to be connected. Indeed, should the earthing be inefficient, the correct operation of the
ignition/detection electrode might be affected.
Warnings
230 V voltage cables must be separated from the 24 V ones using independent PVC conduits.
Before connecting external electrical components (regulators, electrical valves, outside temperature
probes, etc.) to the thermal assembly, make sure that their electrical features (voltage, absorption,
pickup voltage) are compatible with the available inputs and outputs.
Never switch off the boiler during its normal operation (when the burner is on), suddenly cutting off the
power supply by means of the on-off button. This may cause an anomalous overheating of the primary
exchanger. To switch off the boiler (during the heating stage) use an environment thermostat or a remote
control
To connect external devices, use the adequate relays (see the electrical schema at pag. 34 ). In this way
it is possible to use the external devices also in emergency mode (see par 5.3.9)
Do not touch electrical appliances with wet or humid body parts.
Do not expose the appliance to the elements (rain, sun, wind, etc.).
Do not pull the electrical cables.
Do not let the appliance be operated by non-expert people. Should the power supply cable break, switch
off the thermal assembly. To replace it, contact qualified personnel.
5.3 Electrical connections
5.3.1
5.3.1
Connection to temperature regulation devices
Caldaria Condensing 100 series thermal assemblies are fitted with a very versatile control and management
system, which can manage up to three independent circuits operating at different temperatures.
5.3.2
Antifreeze protection
The thermal assembly's management electronics includes an antifreeze function. When the delivery
temperature drops below a minimum limit (programmable), the burners switch on at minimum power, as set
in the operation parameters. The antifreeze function is activate also when the external probe is not
connected. The parameter 14 (high temperature zone Ch1) and the parameter 22 (low temperature zone
Ch2) are by default in climatic mode. If you wan to disconnect the external probe, it is necessary to change
the value of the parameters 14 and 22. Only a Robur authorized Technical Support Service can operate this
parameter variation.
5.3.3
Pump connection
Caldaria Condensing 100 series regulation system includes the simultaneous management of up to three
circulators.
Therefore, if it is necessary to use a general pump to assure the circulation (P3 in Figure 24) and there is a
low temperature circuit, the pump of this circuit (P4 in Figure 24) will be managed directly by a room
thermostat .This operation is carried out by setting the parameter n° 34.
The pumps shall be installed using an adequate relay/commutator, (see also par. 5.2)
With this device we can supply pumps directly from the electrical system, not using the fusible present in the
board.
Summary of Contents for CALDARIA CONDENSING 100
Page 38: ...Installation and user manual...
