aerauliqa QRCE User Manual

Electronic Control "QRCE" User Manual
firmware 0.27 Rev.09 EN 4/ 23
ENG
1 Control Features:
• Automatic / manual fan speed selection
• Changeover floating valve management
• Heating floating valve management
• Water coil antifreeze management
• Modulating electric heater management (PWM)
• Filter pressure switch management
• Fan management by CO2 sensor
• Fan management by 1 pressure sensor
• By-pass damper management
• Boost function
• Alarm management and diagnostic
• Post ventilation
• Clock program management
• Remote display with internal temperature sensor
• BMS Modbus protocol RS485
2 Control logic
In the following diagrams is explained the summer-winter control logic
Tsp-Te
Tsp-Treg
= 2°C
= 1°C
= 0.5°C
= 2°C
Heating logic (Winter)
Tsp-Treg
= 2°C
= 2°C
Tsp-Te
= 1°C
= 0.5°C
By-pass (freecooling)
Cooling 100%
Cooling modulation 1-99%
Only ventilation
= Free-cooling Hysteresis
= Cooling valve proportional band
= Free-cooling differential
Treg = regulation probe temperature
Tsp = set point temperature
Te = external probe temperature
= Heating valve proportional band
= Free-heating differential
= Free-cooling Hysteresis
Example cooling mode (summer):
Treg= 27°C
Tsp= 26°C
Te= 20°C
--------------------------------------------
Tsp-Treg= 26-27= -1°C
Tsp-Te= 26-22= +4°C
Example heating mode (winter):
Treg= 19°C
Tsp= 20°C
Te= 10°C
-------------------------------------------
Tsp-Treg= 20-19= +1°C
Tsp-Te= 20-10= +10°C
0
0
+
-
-
-
+
Cooling logic (Summer)
+
+
-
By-pass (freeheating)
Heating 100%
Heating modulation 1-99%
Only ventilation

aerauliqa QRCE Specifications

General

Brand	aerauliqa
Model	QRCE
Category	Thermostat
Language	English