Specifications

CM67 CHRONOTHERM

CM67 CONTROLS/DISPLAY LAYOUT

Batteries	:	2 x 1.5 V IEC LR6 (AA) Alkaline cells
Battery life	:	4 years typical (Duracell MN1500) for
		applications with loads <3A
	:	3 years typical for electric heat
		applications (>3A, <8A)
Battery	:	Program retained in EEPROM
replacement
Switch type	:	SPDT (potential free)
Electrical rating	:	230 V~, 50...60 Hz, 0.5 A to 8 A resistive
		0.5 A to 3 A inductive (0.6 pf)
		24 V~, 50...60 Hz, 0.5 A to 8 A resistive
		0.5 A to 3 A inductive (0.6 pf)
Time display	:	24 hour or 12 hour AM/PM format
Time keeping	:	Typically better than 10 minutes per year
accuracy
Program	:	7-day with 6 daily time and temperature
		level changes
Time setting	:	Time of day - 1 minute
resolution		Program - 10 minute steps
Sensing element :		100K (@ 25 oC ) NTC thermistor
Temperature	:	Program	: 5 to 30oC in 0.5 oC steps
setting range		Frost	: 5 oC or equal to lower limit
		(5 oC to 16 oC). Frost protection does not

work in cooling mode

Temperature	: ±0.5 K (nominal) @ 20oC, 50% load
control accuracy	3 K ∆/hour
Room	: From 0 oC to 40 oC
Temperature
display range
Control form	: P + I (Proportional + Integral)
Minimum ON	: 10% of cycle time (min one minute),
time	adjustable to 2 to 5 min (see installer set
	up)
Cycle rate	: 3, 6( default), 9, 12. Selectable through
	the installer set up mode.
Wiring	: Terminal block capable of accepting
	wires up to 2.5 mm2
Wire access	: Mains wiring - rear, left or below
	Low voltage wiring - rear, left or below
Dimensions	: 130 x 87R(82L) x 29 mm (w x h x d)
	130 x 172 x 29 mm (w x h x d) (flap
	open)

Environmental : Operating temperature range 0 to 40oC

Shipping and storage temperature range -20 to 55oC

Humidity range 0 to 90% rh, non- condensing

Approvals : Designed to meet European EN approvals EN60730-1(1995), EN55014-1 (1997), EN55014-2 (1996)

EN0R 8498 R2 11/98

CM67 specifications

The Honeywell CM67 is a sophisticated programmable room thermostat designed for residential heating systems, delivering enhanced comfort and energy efficiency. Its sleek, modern design is coupled with advanced technology, making it an excellent choice for homeowners looking to optimize their heating systems.

One of the standout features of the CM67 is its user-friendly interface. Equipped with an intuitive display, it allows users to easily navigate different settings. The large LCD screen clearly shows the current room temperature, setpoint temperature, and operating mode. This helps users to quickly check and adjust settings as needed.

The CM67 boasts a 7-day programmable thermostat capability. This feature allows homeowners to create customized heating schedules for each day of the week, accommodating busy lifestyles and varying temperature needs. For instance, users can set different heating times for weekdays versus weekends, promoting energy savings when the house is unoccupied.

Energy efficiency is further enhanced by the CM67's OpenTherm compatibility. This advanced communication protocol enables precise control of modulating heating systems, such as condensing boilers, which can significantly reduce gas consumption. As a result, users can expect lower energy bills while maintaining optimal comfort levels in their homes.

Another significant technology integrated into the CM67 is its adaptive intelligence. The thermostat learns from user behaviors and environmental factors to optimize heating schedules accordingly. This means that over time, it adjusts to actual usage patterns, enhancing efficiency without sacrificing comfort.

The CM67 also includes frost protection features, ensuring that pipes do not freeze during cold weather by maintaining a minimum temperature. Furthermore, the device comes with holiday mode functionality, allowing users to temporarily override standard heating schedules when away from home, providing peace of mind during winter vacations.

In terms of installation, the CM67 is compatible with most heating systems, making it a versatile choice for different setups. The installation process is straightforward, whether you are replacing an existing thermostat or upgrading to a smarter model.

Overall, the Honeywell CM67 combines functionality, efficiency, and user-friendly features, making it an ideal choice for homeowners looking to enhance their indoor climate control. Its programmable capabilities, energy-saving technologies, and modern design underscore its reputation as a top-tier thermostat in the market.