Secure C1727 Manual page 31

6
Upgrading from Channel Plus
The H3747 uses the same wall plate as the Channel plus range and only requires a
simple wiring change in most cases. If you have existing regular thermostats you wish to
use, make sure the switch live for these are in the appropriate terminals then choose "Add
Wired Device" from either the PTD or the app and select the zone number to assign them
to. You will then be able to control the schedule for these zones.
Take extra care with any existing links already on the back plate, as they may no
longer be in the right terminals. Also bear in mind some Channel Plus such as the
H37XL were already internally linked whereas the H3747 is volt free and you may
now need to make new links in this case.
6.1 Commissioning the PTD
6.1.1 Establish communication with the receiver
31 of 40 BGX701-294-R03, PTD user manual Public