Honeywell CM921 User Manual

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How do I remove the thermostat from the table stand or wall bracket?
After programming is finished always replace the thermostat back on the wall holder
or table stand.
HC60NG Relay Box Controls Layout
What does it mean when the HC60NG relay box green LED is ON?
Green LED indicates normal operation of the radio frequency system. When the
green LED is ON the boiler is also ON. When the LED is OFF the boiler is OFF.
Wall bracket Table stand
Push button and
relay status LED’s

Honeywell CM921 Specifications

General

Type	Programmable Thermostat
Display	LCD
Programming	7-day programmable
Power Source	2 x AA batteries
Temperature Range	5°C to 35°C
Mounting	Wall-mounted
Voltage	230V
Frequency	50 Hz
Accuracy	±0.5°C
Control Mode	Heating
Backup	Battery backup