12
Option 90 - Defi ne remote sensor type, “A” models only
This allows type of remote sensor input type to be 
defi ned. Press + until Option 90 is displayed, use V 
and Λ to select required setting. 
Setting 0 No remote sensor fi tted (Factory setting)
Setting 1 Remote room or duct sensor fi tted, internal sensor 
disabled
Setting 2 Remote limit sensor fi tted, refer to option 93 to defi ne set-point
Setting 3 Confi gured as digital input for window, card reader or 
teleswitch, refer to option 94 to defi ne o/c or s/c.
Option 81 - Thermstat calibration bias
This allows the thermostat calibration to be biased by 
up to ±1.5°K. Press + until Option 81 is displayed, use 
V and Λ to select required setting. 
Setting  Any value between ±1.5 (Factory setting is 0°C)
Option 74 - Date format for calendar clock
This allows date format to be chosen. Press + 
until Option 74 is displayed, use V and Λ to select 
required setting. 
Setting 0 European rules (dd/mm/yy), (Factory setting)
Setting 1 North American rules (mm/dd/yy)
Option 73 - Owner thermostat reference number
This enables site owners to store a thermostat 
reference number in the thermostat. Press + until 
Option 73 is displayed, use V and Λ to select required 
setting.
Setting  Any value between 000 and 999 can be set 
Factory setting is 000
Factory setting is 000
Installation Instructions
GB