Biddle Comfort Circle Series Manual page 16

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2.6.2 Connecting the low-limit-temperature sensor
1. Mount the low-limit-temperature sensor 1 onto the sys-
tem's supply pipe.
2. Open the electronics module 2 (see section 8.6).
3. Make crosswise cuts in grommet 3.
4. Lead the sensor cable through the grommet.
5. Connect the sensor to terminal X360 4 on the PCB.
6. Close the electronics module.
7. Set function 79 to value 1 (see section 3.2.2).
The unit now follows the mode of the system.
2.6.3 Signal to the unit's input
If contact is made to the unit's input, the unit will switch from
heating mode to cooling mode (see table 3-1, function 90).
1. Connect the signal cable to the unit's input 1 (see
section 2.15.7).
2. Set function 90 to value 1 (see section 3.2.2).
If a signal is sent to the input, the unit will switch from
heating mode to cooling mode.
2.6.4 Signal to the unit's output
Both a CH and a CW machine can be controlled via the unit's
outputs. You can connect the CH and CW machines to an
output either separately or linked. The unit thus determines
whether the change-over system will cool or heat.
C C
OMFORT IRCLE