EXAECO
®
HIGH EFFICIENCY RECOVERY UNIT
OPERATING AND COMMISSIONING INSTRUCTIONS
MS-CDF-002
Ind D
Maj. 02/11/2018
Créé par : JC
Validé par : AR
Page 15/49
IV.5.
Wiring and operation of 3 ways mixed dampers (FEE)
3 ways mixed dampers are factory wired
CORRIGO controller drives automatically the bypass thanks to programmation and sensor mounted in standard on EXAECO
units.
RECIRCULATION : The recirculation function is used to warm up the building when it is not occupied (BOOST function).
When activated, the 3-way module is completely recycled. Hot and cold outputs are active. The recirculation function is set as
standard from 05:00 to 07:00. It can be actuated either by the clock 5 or by an external free voltage contact connected between
the terminals 47-48. If the Night Cooling function is active, then it will have priority over recirculation.
For LOBBY® EC versions, a 24V output (to be relayed) is available between terminals 69-70 to force the opening of the
dampers during the recirculation period. To wire independently of the Night Cooling output
The functions below will not be active if the control panel is associated with a DIVA or QUATTRO option
TEMPERATURE FUNCTION OF MODULE FEE
In winter : When you are in hot demand, the 3-way module closes appropriately until the maximum recycling (minimum fresh
air flow rate can be adjusted (see chapter V.6.d)) to recover a maximum of calories. This recovery is associated with the rotary
exchanger. If it is not enough to reach the temperature setpoint, the hot battery goes into action
In summer :
COLD RECOVERY: If the outdoor temperature is higher than the indoor temperature and when there is a cold demand, the 3-
way module closes appropriately until the maximum recycling (minimum fresh air flow rate can be adjusted to This recovery is
associated with the rotary heat exchanger If it is not enough to reach the temperature setpoint, the cold battery goes into action.
FREE COOLING: If the outdoor temperature is lower than the indoor temperature and you are in cold demand, the 3-way
module opens appropriately until all fresh air to recover a maximum of calories. This recovery is associated with the rotary
exchanger. If it is not enough to reach the temperature setpoint, the cold battery goes into action
CO2 FUNCTION OF THE FEE MODULE: The 3-way module also manages the indoor air quality. In the case where the CO2
level in the building is higher than the setpoint then the signal imposing the most fresh air (temperature or CO2) will have
priority.
