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CMT927A1049

CMT927A1049

The CM920 (CM927 or CM921) is a modern wireless programmable room thermostat based on Honeywell's proven CM60RFNG programming philosophy. To furthe...

Product Description

The CM920 (CM927 or CM921) is a modern wireless programmable room thermostat based on Honeywell's proven CM60RFNG programming philosophy. To further improve the ease of use and assist installation this product includes an extra large LCD display with backlighting, a dynamic text display and an 'OK' button.

Used for general purpose control of boiler, zone values, circulation pumps, thermal actuators, electric heaters, heat pumps, etc. in heating and cooling systems.

Technical Properties

Control functions

Fuzzy Logic Algorithm

Heating /Cooling application H or C
Time setting resolution

time of day 1 minute, program 10 minute steps

Holiday mode Yes
Optimisation Yes
Temperature setpoints per day

6

ErP Class IV
Manual operation functions

manual setpoint setting (MAN) and frost protection (OFF) modes available

Temp. setpoint range 0 ... 35 oC
Switch function/capacity

SPDT, 24..230 Vac, 10 A resistive, 3 A inductive

RF frequency range 868 ... 868.6 MHz
Blocking immunity

Receiver class 2 (ETSI EN300220-1 version 1.3.1)

Protection class

IP30 (receiver and transmitter)

Terminal max. wire size 2.5 mm2
Battery life

2 years typical

Power source

transmitter (room unit): battery powered, 2 x 1,5 V AA Alkaline cells supplied; receiver (relay box): mains powered 230 V, 50 Hz

Product literature language

UK

Additional Descriptions
  • LCD backlighting
  • automatic summer/winter time change
  • user program stored in non-volatile memory
  • factory pre-set RF link between the room unit and the relay box
  • installer set-up mode


Default time display format AM/PM
Party timer Yes
Day off function Yes
Display

English