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Summary of Contents for AEREX Reco-Boxx 750 ZXR
- Page 1 Reco-Boxx ZXR / ZXA / Flat Operation and maintenance instructions www.aerex.de © AEREX March – 2021...
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Page 2: Table Of Contents
8.2 Every 3 months ............................. 34 8.3 Every 12 months ........................... 35 9.0 Troubleshooting ............................36 9.1 Troubleshooting ............................ 36 … 9.22 Troubleshooting ............................ 50 10.0 Parameters/Commissioning Sheet ....................... 51 10.1 Main parameters after commissioning ....................51 10.2 Track changes ............................52 www.aerex.de... -
Page 3: Operation And Maintenance Instructions
Backward Yes, electrical Left / Right Counterflow 2500/2800/3700 or water (BW) Reco-Boxx Flat-H 550/650/1000/1400/1700/ Yes, electrical Backward Yes, electrical Left / Right Counterflow 2100/2500/2700/3300/3700 or water (BW) Reco-Boxx Flat 450/600/1000/ Forward Yes, electrical Left / Right Counterflow 1300/1600/2000 (FW) www.aerex.de... -
Page 4: Basic Safety Instructions
Repair work may only be • Grease and oil vapours from range hoods may undertaken by an authorised AEREX specialist. contaminate the unit and ventilation ducts After successful installation and commissioning, and reduce efficiency. Never use ventilation... -
Page 5: Safety Instructions
– in the event of a fire or chemicals Intended operation not ensured if installed in- accident etc. Switch the entire ventilation sys- correctly. A ventilation unit not installed correctly tem off immediately until the outside air is safe may result in operation not as intended. again. www.aerex.de... - Page 6 • Ensure that you are standing securely and Store packaging material out of the reach of cannot lose your balance and that there is no children. one under the unit. • When removing and installing the components, support them from below with a hand. www.aerex.de...
- Page 7 It must be possible to identify the position of the shut- off device from the setting of the operating handle. This is considered to be fulfilled if a soot blocking device is deployed. www.aerex.de...
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Page 8: Symbols And Abbreviations
Air from the building to the AHU EXHAUST AIR Air from the AHU to outdoor HEATING COIL COOLING COIL NV / KW (WATER/ELECTRICAL) MOTORISED SILENCER DAMPER TEMPERATURE SENSOR PRESSURE SENSOR No = x (1,2,3…) FLEXIBLE SLIP CLAMP CONNECTION CIRCULAR DUCT CONNECTION For inlet For outlet www.aerex.de... -
Page 9: Product Overview
ATTENTION: The difference between left and right LP units is the factory placement of the controls box on opposite sides. ATTENTION Right and left hand units have different article numbers and should be ordered accordingly. Main version described in the manuals is always the hand right version. www.aerex.de... - Page 10 Note: internal electrical coils, motorised dampers, internal fan-pressure sensors, flexible connections and slip-clamps must ordered and are all pre-installed and factory wired. The internal heating water-coil accessory is pre-installed, but must be connected, hydraulically and electrically, by the installer. www.aerex.de...
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Page 11: Air Volumes And Dimensions Reco-Boxx Zxr / Flat-H
(ZU/FO): 700 x 500 RecoBoxx 3700 FlatH 400 – 3700 1020 – 360 2800 x 660 x 1935 Connection on the suction 0 – 100% modulating side (AU/AB): 700 x 500 Connection on the pressure side (ZU/FO): 700 x 500 www.aerex.de... -
Page 12: Wiring Overview
The cables used must conform to the RS-485 Standard with twisted pair conductors. The cables must be shielded. Conductor Area 0.2 mm². The total length must not exceed 100 meters. Electrical cable: Installers need to foresee extra electrical cable length for easier future maintenance of the AHU. White,Blanc,Witte,Weiß www.aerex.de Blue,Bleu,Blauw,Blau... -
Page 13: Circuit Board Sat3
= PWM output to control electrical coil T°7 = Heating coil frost protection sensor (T7) fig. 4 T°8 = Cooling coil frost protection sensor (T8) IN10 = Cooling OFF, (to force heating off use IN6) IN11 = Input cooling/heating (open = heating, closed = cooling) www.aerex.de... -
Page 14: Functions
Pressure on exhaust: the airflow of the exhaust fan(s) is modulated to maintain a certain pressure Setting constant. The pressure is measured by a pressure sensor located in the extract air duct. • 5 - MODE OFF: This stops the AHU. www.aerex.de... -
Page 15: Temperature Control
The outdoor temperature (sensor T1) is higher than 15°C. lower than 14°C. • The extract air temperature (sensor T2) is • The extract air temperature (sensor T2) is higher than 22°C. lower than 20°C. These Settings can be configured in ADVANCED SETUP www.aerex.de... -
Page 16: Change Over Function
Comfort temperature. The neutral band prevents the cooling and heating systems from counteracting each other. The neutral band is added to the comfort setpoint for the activa- tion of the cooling function. The neutral bands has to be configured in the advanced setup. www.aerex.de... -
Page 17: Frost Protection
The frost protection strategy (down regulation supply airflow, modulating bypass or electrical pre- heating) will still be used as a first step. The defrost function will only be active if the frost protection strategy is not sufficient. These Settings can be configured in ADVANCED SETUP www.aerex.de... -
Page 18: Time Schedule
• Constant pressure on supply or exhaust: the pressure setpoint (percentage of the nominal setpoint) and the rate of the exhaust airflow by the supply airflow. • Constant pressure on supply and exhaust: one pressure setpoint (percentage of the nominal setpoint) for supply and one for exhaust. www.aerex.de... -
Page 19: Commissioning
The most basic interface to control a GLOBAL air handling unit is the 4 position swich. This swith will allow to control the unit to its three configured airflow (low, medium and high) and as a fourth position, the unit is switched off. www.aerex.de... -
Page 20: Commissioning With Touchscreen Tp-Touch
Main menu. See Section 7.1.2 The main menu is presented as a rotary menu. After pressing the “menu”-button at the bottom left corner of the Home Screen, the rotary menu will be shown. www.aerex.de... -
Page 21: Home Screen
The appearence of the image varies depend- ing on the type of air handling unit and its selected functions and/or options. Flow chart symbols: Bypass (closed/open) Electrical heating coil Water heating coil Change over coil Motorised damper Cooling coil (open/closed/opening) Flow charts: Plate heat exchanger www.aerex.de... -
Page 22: Main Menu
The time slots are subsequent. Seasonal management The seasonal management menu allows for the de- activation of heating coils, cooling coils and bypass freecooling function based upon a year calendar. In between the programmed interval, the selected function is OFF. www.aerex.de... - Page 23 Maintenance Configuration of service related settings. A maintenance warning interval can be configured as wel as the filter clogging alarm. Advanced setup A code and a special training are desired for access to this menu. www.aerex.de...
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Page 24: Basic Setup
(l/s, m³/h), pressure (Pa), input signal strenght (%) or torque (%). For both “Airflow control” and “Torque con- trol”, three setpoints are available: Low, medium and high. Setting Settings range Factory setting Operating mode Airflow Airflow Demand control Pressure Torque www.aerex.de... - Page 25 (due to e.g. low occupancy) that will be activated by speed “III “. Setting Range Factory setting Control Supply Supply Exhaust Supply+- Exhaust Ratio exhaust/supply 5...999 % 100 % Sleep factor on K3 10...100 % 100 % Pressure initialisation Via Airflow Airflow Via Pressure Start reference initialisa- tion www.aerex.de...
- Page 26 3 monthly warning 12 monthly warning Yes Commissioning completed When the commissioning has been successfull and this is confirmed in this menu, the commissionig menu will not be activated automatically anymore. Setting Settings range Factory setting Confirmation of successfull commissioning www.aerex.de...
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Page 27: Advanced Setup
The system can be defined as a negative or a positive logic. A negative logic airflow drops when ana- logue signal on K2 is > than the setpoint. Setting Settings range Factory setting Reaction speed 0...10 Logic Positive Negative Negative www.aerex.de... - Page 28 Setting Settings range Factory setting Supply or Extract Supply Supply temperature Extract control? Reaction speed 1...10 Supply air, min. 0...20 °C 15,0 °C Supply air, max. 16...50 °C 28,0 °C Stop fan if T°Supply <5°C www.aerex.de...
- Page 29 The post ventilation function is used to keep the fans running during a specified laps of time. This function is activated automatically when an electrical heating coil is activated. Setting Settings range Factory setting Activation Time 0...9999 sec 90 sec www.aerex.de...
- Page 30 Setting Settings range Factory setting Control mode Exhaust Supply Supply Setpoint -9,9...99,9 °C 21,0 °C PID - Pro- 0...100 portional Band PID - Integral 0...100 PID - Derivate 0...100 www.aerex.de...
- Page 31 Setting Settings range Factory setting Control mode Exhaust Supply Supply Setpoint 0...99 °C 17,0 °C Reaction Speed 1...10 www.aerex.de...
- Page 32 5 minutes. Setting Settings range Factory setting Internal heating coil -10...+10 °C +4,0 °C External heating coil -10...+10 °C +4,0 °C External cooling coil -10...+10 °C +4,0 °C Internal preheating coil -10...+10 °C +4,0 °C www.aerex.de...
- Page 33 “OFF”-mode. Setting Settings range Factory setting Reset timer Fan run time activation No Display time Service alarm time 0...999999 h Stop fan 0...999999 h www.aerex.de...
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Page 34: Preventive Maintenance
• Vacuum clean any accumulations of dust in the unit. • Inspect and gently vacuum clean the heat exchanger if necessary. Use a brush to protect the fins. • Clean any condensation stains • For PX units, clean any accumulations in the drain pan. www.aerex.de... -
Page 35: Every 12 Months
Clean the fan space, if needed. Remove the fans if necessary. 3. Check seals on the unit: Ensure that the side access panels are fully closed and that the seals are intact. Replace if necessary. www.aerex.de... -
Page 36: Troubleshooting
Displayed on Touchpanel Text displayed LED ALARM LED Pa B.11 Fan 1 failure B.12 Fan 2 failure B.13 Fan 3 failure B.14 Fan 4 failure TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Alarm stopped Auto reset: yes www.aerex.de... - Page 37 Pressure alarm - Supply air P.20 Pressure alarm - Extract air S.40 Pressure alarm from Pressure Switch* TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Closed Run* Auto reset: yes * unless the status has been changed in advanced setup www.aerex.de...
- Page 38 Initialisation of the reference pressure – Supply air flow too high - Min. limit of the motor P.27 Initialisation of the reference pressure – Extract air flow too high - Min. limit of the motor TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans ALARM Stopped Auto reset: no www.aerex.de...
- Page 39 TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Alarm status Stopped Auto reset: no • Solutions: • Try a TOTAL RESET of the data using the advanced setup. If still not resolved, order a new circuit board. www.aerex.de...
- Page 40 * The fans are stopped by default in the event of a fire alarm but, via the advanced setup, it is possible to configure a fixed airflow for supply (contact IN7 needs to be closed) and for exhaust (contact IN8 needs to be closed). www.aerex.de...
- Page 41 • Communications failure between the Hauptplatine and Touchpanel TP-Touch. • Effects: Displayed on Touchpanel Text displayed LED ALARM LED Pa CB COM ERROR TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Alarm status Auto reset: yes www.aerex.de...
- Page 42 LED ALARM LED Pa T.40 Sensor T4 disconnected T.41 Sensor T4 short circuit TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Alarm status Manual reset mandatory. * unless the status has been changed in advanced setup www.aerex.de...
- Page 43 T° control on T2. • Effects: Displayed on Touchpanel Text displayed LED ALARM LED Pa T.50 Sensor T5 disconnected T.51 Sensor T5 short circuit TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Alarm status Manual reset mandatory. www.aerex.de...
- Page 44 30 minutes if comfort on T2 instead of T5, while post heating is at maximum.) • Effects: Displayed on Touchpanel Text displayed LED ALARM LED Pa S.50 Post-heating - T° of the supply air too low TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Auto reset: yes www.aerex.de...
- Page 45 33% if airflow control or demand control and of 25% if pressure control mode, for 15 minutes. • Effects: Displayed on Touchpanel Text displayed LED ALARM LED Pa A.10 Anti-freeze - Reduced air flows TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Auto reset: yes www.aerex.de...
- Page 46 30 minutes if comfort on T2 instead of T5, while post cooling is at maximum). • Effects: Displayed on Touchpanel Text displayed LED ALARM LED Pa S.60 Post-cooling - T° of the supply air too high TAC5 control board AL1 relay O.R.1 relay of SAT3 LED ALARM LED AF Fans Auto reset: yes www.aerex.de...
- Page 47 Anti-freeze protection of the waterborne post-heater (EBA+) A.42 Anti-freeze protection of the waterborne post-cooler (EBA-) A.43 Anti-freeze protection of the waterborne reversible coil (EBA+-) TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Alarm Status Stopped Manual reset mandatory. www.aerex.de...
- Page 48 • Alarm indicating that the hours limit for the maintenance of the filters has been reached. • Effects: Displayed on Touchpanel Text displayed LED ALARM LED Pa FILTERS ALARM TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Auto reset: via dedicated reset www.aerex.de...
- Page 49 • Effects: Displayed on Touchpanel Text displayed LED ALARM LED Pa B.20 Incorrect position of the modulating bypass. TAC5 control board AL1 relay O.R.1 LED ALARM LED AF Fans Alarm Status Stopped Manual reset mandatory. www.aerex.de...
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Page 50: Troubleshooting
This must be done by an accredited technician. A code and special training is mandatory to access this menu group. The table below is valid for con- trollers generation TAC5. Please ask Aerex for the REC CODE table: info@aerex.de www.aerex.de... -
Page 51: Parameters/Commissioning Sheet
Exhaust: O [m³/h] O [l/s] O [Pa] If KWin option: T° KWin = °C (Electric preheater [EV]) If KWout option: T° KWout = °C (Electric post-heater battery [EN]) If NV option: T° NV = °C (Water post-heater battery [WN]) www.aerex.de... -
Page 52: Track Changes
10.2 Track changes Enter details when the Setting of a parameter has been changed (use only one row per parameter): Setting before Setting of Date of Setting of Date of Parameter Name change change #1 change #1 change #2 change #2 www.aerex.de... - Page 53 Reco-Boxx ZXR / ZXA / Flat – Operation and maintenance instructions [03/ 2021 ] Notes www.aerex.de...
- Page 54 Reco-Boxx ZXR / ZXA / Flat – Operation and maintenance instructions [03/ 2021 ] Notes www.aerex.de...
- Page 55 Reco-Boxx ZXR / ZXA / Flat – Operation and maintenance instructions [03/ 2021 ] Notes www.aerex.de...
- Page 56 Reco-Boxx ZXR / ZXA / Flat – Operation and maintenance instructions [03/ 2021 ] AEREX HaustechnikSysteme GmbH Steinkirchring 27 78056 Villingen-Schwenningen Tel.: +49 77 20 / 694-880 Fax: +49 77 20 / 694-881 Service hotline: +49 77 20 / 694-122 info@aerex.de...
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