Locating The Room Thermostat; System Check - Honeywell Home CM900 Installation Manual

Wireless programmable room thermostat & receiver box
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2.2.3 Locating the Room Thermostat

While still in the Test Mode, as described in section 2.2.2, the room thermostat should be located taking
the following into consideration and reviewing the illustrations below:
1. Find a suitable location where the signal transmission is reliable. Reliable transmission is indicated when
the receiver box is flashing the green LED every 6 seconds. NOTE: The receiver box relay will be off.
2. Install the room thermostat EITHER on the wall using the wall bracket OR attach the optional table stand
as shown in below.
3. Exit the Test Mode by moving the setting slider to the required operating mode (AuTO or OFF).
• The room thermostat should be installed in an open space for best performance as it is a radio frequency device.
• Leave at least 30cm distance from any metal objects including wall boxes and at least 1 metre from any other
electrical equipment eg. radio, TV, PC etc.
• Do not mount onto metal wall boxes. • It is recommended that the receiver box is fully installed.

2.3 System Check

Now a simple test can be completed to check the full system has been installed correctly:
1. Set the slider switch to the OFF mode.
2. Check the boiler supply is on and check that the green LED on the receiver box is off.
3. Set the slider switch to the MAN mode.
4. Adjust the setpoint up to the maximum (35°C) by pressing the button. The boiler should come on
(green LED ON on receiver box) after a few seconds and the
LCD display.
5. Set the slider switch to the OFF mode. The boiler will go off (green LED OFF on receiver box) after a
few seconds and the
6. Check the system operation by moving the slider between MAN and OFF modes several times, bearing
in mind the switching delay referred to above.
Now, you should have completed the installation successfully - to begin operating at the default factory
settings move the slider to the AuTO mode or select PROG to modify the built-in heating program
accordingly.
Installation Guide
symbol disappears.
Wall bracket
symbol appears on the room thermostat
Table stand

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