Additional Installation Information; Binding / Rebinding Procedure; Multi-Zone System; Binding An Hr80 Radiator Controller To The Room Thermostat - Honeywell CM900 Installation Manual

5) Additional Installation Information

5.1 Binding / Rebinding Procedure

The binding operation described below is required if:
• Any of the system components (room thermostat or Relay Box) are replaced.
• The Relay Box has incorrect or no binding data stored (e.g. when pre-bound system pack components
have been mismatched).
NOTE: During the binding procedure keep approximately 1m distance between the room thermostat and
the Relay Box.
To bind/rebind:
1. Press and hold the Relay Box push button for 15 seconds to reset any previously stored data. After 15
seconds the red LED will change to flashing 0.1sec on/0.9sec off.
NOTE: After 5 seconds the red LED will start to flash 0.5sec on/0.5sec off, but continue to hold the button).
2. Release the push button.
3. Press and hold the Relay Box push button for 5 seconds to enter the binding mode. The Red LED will
start flashing at 0.5sec on/0.5sec off to confirm the binding mode has been entered.
4. Move the room thermostat slider to the OFF position and press the
with the button. The unit will display InSt and 'CONTROL BINDING'.
5. Press the green button to send the binding signal out to the Relay Box. The red LED is switched off to confirm
successful binding operation. If the red LED still flashes push the button again until binding is successful.
6. Now go to Section 2) Installing the CM900 Wireless System to setup the system.

5.2 Multi-Zone System

Multiple room thermostats and Relay Box sets can also be used to control multi-zone systems and the
CM927/921 room thermostat is compatible with a variety of other Honeywell products including HR80 radiator
controllers (see below) and HCE80 underfloor heating controllers. If you intend to use it in this way additional
installation and user instructions can be obtained by contacting the address at the end of this guide.
NOTE: Some of the labels supplied with the pack are for use in multi-zone applications.

5.3 Binding an HR80 Radiator Controller to the Room Thermostat

1. Press the bind button (1) for approximately one second and release. When the
button is released, the
displayed for 30 seconds.
2. Move the room thermostat slider to the OFF position and press the
together along with the
3. Press the green button to send the binding signal out to the radiator controller.
4. The radiator controller will display
If several radiator controllers are to be controlled simultaneously in one room:
1. Press the bind button on all the radiator controllers to be bound to the room
thermostat. The symbol flashes continuously on the display of the radiator controller.
2. Move the room thermostat slider to the OFF position and press the
with the button. The unit will display InSt and 'CONTROL BINDING'.
3. Press the green button to send the binding signal out to the radiator controllers.
4. The radiator controllers will display
radiator controller is automatically set to 20°C.
NOTE: The radiator controller can take up to 4 minutes to receive data from the room thermostat.
Installation Guide
symbol flashes and the software version number is
button. The unit will display InSt and 'CONTROL BINDING'.
once the signal has been received.
once the signal has been received. The set temperature at the
and buttons together along
and buttons
and buttons together along
1
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