Lennox CLIMATIC series User Manual page 23

COMPONENTS
2
CO air quality sensor (optional)
The CLIMATIC offers a solution to optimise the air quality through to a CO
The activation of the air quality control can be specifi ed according to the scheduling and can take different value for each schedule
mode (Night, Day, Day I, Day II and BMS) in the menu (3851).
9h
DayI mode
The CLIMATIC controls the fresh air damper to maintain a fi ne air quality in the room place. The damper is moving from the minimum
setting (2823) to the maximum setting (3822) according to the minimum air quality (3853) and the maximum air quality (3854). If
the air quality reach a level set in (3855) the alarm is activated.
Free cooling - Free heating
From a room temperature need (Capacity Factor) the damper opens according to a proportional rule on the blowing tempera-
ture, 0% need = Minimum fresh air (2823) and 100% need = maximum opening threshold (3822)
The user may choose to limit the fresh air damper operation with contacts or set points modifi cation (see § above). The outdoor
temperature or humidity value may also limit the opening.
The free cooling or the free heating activation can be specifi ed according to the scheduling and can take different mode for each
schedule mode (Night, Day, Day I, Day II and BMS) in the menus (3831) and (3841).
9h
CLIMATIC RT_UNITARY-IOM-1508-E
12h/0h
Day mode
YES
Night mode
3h
NO
NO
6h
Fresh air opening (%)
(3822)
(2823)
(3853)
12h/0h
Day mode
YES
Night mode
NO
DayI mode
YES
6h
sensor.
2
Night mode
NO
21h
Night mode
(3854)
3h
21h
24h/212h
Day mode
YES 15h
DayI mode
NO
YES
18h
Air quality (ppm)
24h/12h
Night mode
NO
Day mode
YES 15h
Night mode
NO DayI mode
YES
18h
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