Remote Alarm And Boiler Run Indication; Safety Interlock - REMEHA Quinta 115 Technical Information

NOTE: A frost thermostat should preferably be installed in rooms with a high frost risk.
Connect the frost thermostat in parallel to the room thermostat - connectors 3 and 4 of
the terminal strip.
Attention:
• The integrated boiler protection described above will not provide complete system
or fabric protection.
• When a Celcia 20 control has been fitted to connectors 3 and 4 an outside sensor
must be used to provide system and building fabric frost protection.
• If a frost thermostat is connected parallel to the Celcia on connectors 3 and 4,
when the frost thermostat calls for heat (contact closed) it will override the Celcia
20 control and cause an error message (OT ERROR) flashes in the display and the
boiler will operate continuously to achieve the flow set point.

8.8 Remote alarm and boiler run indication

As standard the boiler is supplied with 2 x volt free indicators.
- Common alarm signal connect to terminals 21 and 22. Contact closed, opens on
lock out and power loss.
- Boiler run signal connect to terminals 23 and 24. Contact open, closes on boiler run.
Maximum 230 Volts, 1 A capacity each.

8.9 Safety interlock

As standard the boiler is supplied with an interlock carrying a 24 V boiler control
circuit. To use first remove the fitted wire link (on RH side of terminal block between 10
and 14).
Any external devices required to stop the boiler should then be wired in series and
connected to terminals 10 and 14.
If the contacts of the external interlock have opened during heat demand, the boiler
will shut off for 120 seconds (shut-off code b@^). Should the contacts close again
during heat demand, the boiler will wait the remaining time from the 120 seconds
before attempting a restart.
Remeha Quinta 115
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