Lennox CLIMATIC 40 User Manual

17
CM2
CM3
CM1
23 23.5 24 26
SP
24.5
R02/4
23
23.5 25
r40 0 9 1
r41 0 100 20
ADVANCED FUNCTIONS
11.- FREE COOLING
This option takes advantage of external conditions for cooling mode.
Freecooling is enabled when outdoor temperature is 1ºC lower than indoor temperature; when the former is:
- < 10ºC, the compressors are deactivated and the air intake gate fully opened in order to refresh with outdoor air only (sufcient under
these conditions).
- >10ºC, the air intake gate opens and delays the compressors, which turn on only if there would be insufcient outdoor fresh air
to achieve the comfort setpoint.
The illustration below shows freecooling regulation.
With free cooling
Open air damper.
Close air damper.
Without freecooling
Stop air damper.
Ambient temperature (ºC)
Ambient temperature (ºC)
OPTION
To get a constant air renewal, when freecoling conditions are satised, the damper is mantained opened partially (20%), according to
the following values.
Par. DESCRIPTION Min. Max. Def.
This indicates when to carry out the minimum opening of the damper.
0= Never.
1= with freecooling.
2= with freeheating.
3= with freecooling and freeheating
4= always, except with freecooling y freeheating.
5= always, except with freeheating.
6= always, except with freecooling.
7= always
8= only for cooling mode.
9= only for heating mode.
% minimum percentage opening damper.

Lennox CLIMATIC 40 Specifications

General

Brand	Lennox
Model	CLIMATIC 40
Category	Control Unit
Language	English