Change Over - Reversible Units - Lennox CLIMATIC 50 User Manual

CHANGE OVER – REVERSIBLE UNITS
Function
For Reversible units only. This allows the reversible units to change automatically from winter to summer
operation.
Description
This function will change the unit from production of hot water to production of chilled water automatically and
can be set up with following set points:
3311 Change over mode according to following values
3312 Change over winter setting
The set point 3312 is the outside air temperature under which the unit will operate as a heat pump.
3313 Change over summer setting
The set point 3313 is the outside air temperature over which the unit will operate as a chiller.
Example:
3312 = 12°C
3313 = 23°C
CLIMATIC 50 user manual – Chillers ranges
Cool. Only cooling only
Heat. Only heating only
Auto. Automatic change over - pumps are running in dead zone
Auto. Stop Automatic change over – pumps are stopped in dead zone
12°C
Outside air temp
23°C
CL50-CHILLERS/IOM/1105-E
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