Honeywell CM900 Programmable Room Thermostat PDF Installation Guide
Setting-up the Thermostat
Please follow the illustrations detailed on page 1 in sequence to install the thermostat correctly, then refer to the steps below:
NOTE: For gas boiler applications, the factory system settings will not need to be changed (for other applications see section ‘Using the Thermostat for Specific Applications’ below).
To set-up the thermostat:
1. Remove the battery cover and insert the batteries supplied with the unit (2 x AA LR6 Alkaline Batteries).
2. Move the slider switch to the DATE position.
3. Use the or buttons to set the correct day / month / year, pressing the green button to confirm.
4. Use the or buttons to set the correct time, pressing the green button to confirm.
5. Move the slider switch to the required operating mode (AUTO, MAN or OFF) to begin operating at the default factory settings, or move to
PROG and modify the built-in heating program accordingly (see User Guide). You can now use the ‘User Guide’ supplied with the thermostat to demonstrate how it works to the home owner. Using the Thermostat for Specific Applications The CM900 thermostat is a versatile controller that can be used to control many different applications. For most typical applications, like ‘wall-hung gas fired combination boiler control’ or ‘zone valve control’, no adjustments from the factory settings are required. For other applications, like controlling an oil burner, the best system performance can be achieved by modifying selected parameters of the thermostat in installer’s mode. The table below lists the most common settings used for a specific application: …………
Description:
The thermostat will adjust the start time in the morning/afternoon so the
desired temperature is reached by the start of the program period. The
system will restrict the start time to a max of 2 hours. This product can be used for heating or cooling applications. If you select cooling mode the control algorithm and factory default program will be modified. You can independently modify the heating and cooling profile. This feature moves time automatically on the last Sunday of March and the last Sunday of October. The feature is factory enabled. If the thermostat is located in a particularly hot/cold location and cannot be moved because of wiring restrictions then the measured/displayed temperature can be adjusted by +/- 3°C. This is useful if the homeowner wants the reading to match another appliance temperature display. The normal upper temperature limit of 35°C can be reduced to 21°C to save the homeowner energy. The normal lower limit of 5°C can be increased up to 21°C to protect inhabitants from cold.
Download Honeywell CM900 Programmable Room Thermostat PDF Installation Guide
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