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Honeywell CM921 Product Specification Sheet page 5

Wireless programmable thermostat
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Parameter
Category 2 Parameters – System Settings (press the > button to access this category)
Minimum boiler ON
Time
Cycle Rate
Heat / Cool Change
Pump Exercise
System
Synchronisation
Loss of Communication
Instruction
The following parameters are for the control of other Honeywell Wireless products such as Wireless Underfloor Heating controls and
Wireless Radiator controls. For more information please contact Honeywell sales.
Room Temperature
Sensor Use
HR80 Window-Open
Function
HR80 Local Override
Maximum Flow
Setpoint
Minimum Flow Setpoint
Mixing Value Run Time
DIMENSIONS
Installer Set-
Factory Setting
Up Number /
Abbreviation
(Press + or -
keys to
select)
Display
Description
1:Ot
1
1 minute minimum ON time
2:Cr
6
6 cycles per hour (cph)
4:HC
0
Disabled
5:PE
0
Pump Exercise Disabled
6:Sn
0
Standard operation of the
Room Unit
7:LC
0
Relay Off
8:Su
0
HC60 Control
9:HO
0
Disabled
10:HL
1
Enabled
11:uF
55
55°C Maximum Flow Temp.
12:LF
15
15°C Minimum Flow Temp.
13:Ar
150
150 seconds
CM921 CHRONOTHERM
Optional Setting
Display
Description
Selection of 2,3,4 or 5 minutes minimum
2 to 5
ON time
Selection of 3,9 or 12 cph
3, 9 or12
1
Enabled
1
Pump Exercise Enabled
1
Room unit configured as Synchroniser
1
Relay 20% on / 80% off
1 - HR80/HM80 control with own/remote
1,2,3 or 4
sensor (no temperature displayed)
2 - Hr80/HM80/HCE80 control with CM
Sensor
3 - HC60 control and HR80/HM80/
HCE80 control with own/remote sensor
4 – Hr80/HM80/HCE80 control with own/
remote sensor (temperature displayed)
1
Enabled
0
Disabled
0 to 99
0°C to 99°C adjustments in 1°C steps
0 to 50
0°C to 50°C adjustments in 1°C steps
0 to 240
0 to 240 sec. adjustments in 1sec steps
EN0H 8557 UK07 R0 09/06
5

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