Shutdown Input; Release Input; Optional Electrical Connections - Baxi LUNA DUO-TEC 1.70 User Manual

10.5 SHUTDOWN INPUT

The boiler has a shutdown input. This input is on the BL terminals of the
control board connection.
CAUTION
Only suitable for potential-free contacts.
NOTICE
When using an OpenTherm thermostat, a freeze thermostat
cannot be connected in parallel to the ON/OFF-OT terminals.
Instead, implement frost protection for the heating system using
the outdoor temperature sensor.
NOTICE
For use of this input remove the jumper cable.
The behaviour of the input can be changed using P36 (see section 11.4 "Parameter Settings").

10.6 RELEASE INPUT

The boiler has a release input. This input is on the RL terminals of the
connector. The behaviour of the input can be changed using P37 (see
section 11.4 "Parameter Settings").
CAUTION
Only suitable for potential-free contacts.

10.7 OPTIONAL ELECTRICAL CONNECTIONS

10.7.1 Auxiliary Control Box
The control PCBs are located in the auxiliary control box. See the instructions provided with the control PCB.
• Unclip the PCB cover.
• Remove the cover.
1
x3
2
29
On/off
OT BL
RL
On/off
OT BL RL
7703477.01 (1-03/18)
Tout Tdhw
Tout Tdhw