Honeywell – CM927 Programable Room Thermostat Wireless RF CMT927A1049 Replaces CMT921
This Product has now been replaced by the T4R Wireless Programmable Thermostat
- This replaces CMT921
- The thermostat and receiver box – has a a wifi range of 30M
- Auto, manual, holiday and off (frost) modes
- The memory holds user programme and you won’t lose it, even when you need to change the batteries.
- This product has a large LCD display which is user friendly.
- You can pre-pogramme up to 6 time/temperature settings for a day
- You can synchronise boiler control in multi-zone systems for optimum efficiency
- Boiler ‘ON’ display
- You get volt free connections
- Automatic Summer/Winter time change so you don’t have to worry
- Energy saving TPI control comes as standard
How do I change the batteries on the CM927 when they run out?
The thermostat constantly monitors the battery power level, which gives you peace of mind, but realistically the batteries typically last for roughly 2 years before you have to get round to replacing them. You’ll know when When the power is running low a flashing symbol will be displayed on the screen. To change the batteries follow the steps inthe above section (‘STEP 1: Installing the Batteries’ on page 3), replacing the used batteries with new ones in step c.
Note: While changing the batteries your program settings will be stored but you may need to adjust the time and date settings to be correct.
How do I set one temperature for the whole day?
To operate as a simple thermostat with one temperature for a period of time, move the slider switch to the MAN position. Adjust the manual temperature by pressing the or buttons. This can be set anywhere from 5°C to 35°C in 0.5°C steps. The thermostat will continue to maintain this temperature until another operating mode is selected or the temperature is adjusted.
What is Optimum Start?
Optimum Start is the program that allows you to keep the optimum temperature conditions. This is predominently an Energy Efficiency tool that just adjusts the start time of your heating system depending upon how cold it is, so you don’t have to.
For example,on cold days your heating system will be started earlier to ensure that your home is warm when you get up (at the target temperature) and on warmer days the heating system will be started later to save energy.
So, if the Optimum Start Feature is used,then the time / temperature settings which are entered into the thermostat should be set to when you want to be warm by and not when you want the heating system to start.
I want to use the table stand instead of wall mounted bracket.
Where can I position the room unit?
It is important to keep the room unit in a location where reliable RF communication was proven. Advise your installer where would you like to position the room unit and he will check if the RF communication is reliable in the selected location(s).
Important: The Room Unit measures the temperature of the room where it is located.
It is important that the placement of the Room Unit within the room is away from; draughts, direct sunlight and other heat sources. As this is a wireless device certain objects could interfere with the RF signal – 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.