Lennox CLIMATIC series User Manual page 13

AIR MANAGEMENT
Control of the the Blowing air temperature
Description
In some application it may be interesting to control only the blowing air temperature, without controlling the room air temperature.
This function may be activated using menu (3211) and in this case, the various components of the roof topp are then stagging
according to a priority level and with a capacity factor calculated from the measured blowing air temperature and the blowing air
temperature set point which is then set by the users in menus (2251) et (2252).
additionnaly, as in the set point offset according to outside temperature, the CLIMATIC may offset the cooling and heating set points
and so the dead zone according to the outside air temperature.
Blowing air Heating set point (°C)
22°c
(2242)
(2252)
19°c
(2243)
(2251)
Blowing air Cooling set point (°C)
In the example above, setpoints (2256) and (2258) are set to -5k and +5k, from factory setting the are at 0k.
Settings
The different settings to adjust the blowing air temperature control are available in the menus:
(2251): low limit threshold in cooling mode
(2252): high limit threshold in heating mode
(2255): outdoor temperature low threshold for slope on the supply temperature setpoint
(2256): coeffi cient of the low outside temperature for the slope of the supply temperature setpoint
(2257) outdoor temperature high threshold for slope on the supply temperature setpoint
(2258) coeffi cient of the high outside temperature for the slope of the supply temperature setpoint
(3211) choice of the control (room temperature or supply)
CLIMATIC RT_UNITARY-IOM-1508-E
27°c
24°c
- 5°k
(2256) (2245)
17°c
14°c
0°c
(2255) (2244) (2257)
+ 5°k
(2258)
(2247)
30°c
Outdoor air temp °C
(2246)
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