LMF Clima LCM - Control Features

Electronic Control "LCM" User Manual
firmware 0.06 Rev.02 EN 3/ 15
EN
1 Control Features
 Automatic / manual fan speed selection
 Cooling / changeover floating valve management
 Heating floating valve management
 Cold water / change over pump management
 Hot water pump management
 Water coil antifreeze management
 On-Off electric heater management
 Filter pressure switch management
 Fan management by CO
2
sensor
 Fan management by 1 or 2 pressure sensors
 Mixing box management
 Mixing box management with CO
2
sensor
 Boost function
 Alarm management and diagnostic
 Post ventilation
 Clock program management
 Remote On-Off
 Digital input for PIR occupant sensor
 Digital input for fire alarm
 Heating / cooling selection by digital input
 Hot water minimum thermostat
 Remote display with internal temperature sensor
 BMS Modbus protocol RS485
2 Control logic
In the following diagrams is explained the summer-winter control logic
Heating
Heating logic
Ventilation
+
= 2°C
Tsp-Te
Tsp-Treg
Cooling logic
Ventilation
By-pass
+ By-pass
Cooling
= 2°C
Tsp-Te
Tsp-Treg
Cooling modulation
Figura A

By-pass
Cooling modulation
+
Heating modulation
Ventilation
= 2°C
= 1°C
= 1°C
Heating
Heating modulation

+ By-pass
By-pass
= 2°C
Ventilation
Cooling
By-pass
0.5°C
0.5°C
Treg = regulation probe temperature (on supply air or room sensor on display)
Tsp = set point temperature
Te = external probe temperature