X-CUBE ROOMAIR-B-ZAB+SEK

X-CUBE ROOMAIR-B-ZAB+SEK-4-KM/1150x670x320/C3

Under sill units for horizontal assembly on the façade

Please note:

The specification text describes an under sill ventilation unit variant with a single room control system arranged in the unit for autonomous room operation.

The supplied controllers contain the standard control parameters for operation according to our control system description.

FSL-B-ZAB+SEK supply and extract air unit with addition of secondary air - MASTER UNIT
Under sill ventilation unit TROX FSL-B-ZAB+SEK with supply and extract air function and secondary air operation, heat recovery as well as heating and cooling function for installation on an external wall below the window sill:

• Device casing made of galvanised sheet steel, cover and sheet metal connections via deep-drawn threads and stainless steel cross-head screws, all necessary internal air ducts sealed and lined, internal electrical cable penetrations sealed, exposed surfaces powder-coated (RAL 9005, jet black)
  
  
• Intake for extract air and secondary air on the top, sheet metal edges of the intake openings are formed accordingly (no sealing tape) and can be used as an additional support for the under sill trim (trim by others); closed cell sealing tape is required between the unit and the trim so as to avoid any mixing of airflows (short circuit); sealing tape is not included in the TROX supply package
  
  
• Sound- and heat-insulating lining on suction and discharge side made of mineral wool faced with glass fibre scrim (material classification A, non-combustible according to DIN 4102, T1), erosion resistant up to air velocities of 20 m/s, or closed cell insulation material
  
  
• The device meets the hygiene requirements of VDI 6022
  
  
• Levelling feet, + 40 mm
  
  
• Connection to the outdoor air and exhaust air openings (provided by others) of the façade by means of perimeter closed cell sealing tape on the rear side of the unit, b × d = 50 × 10mm; the suction and discharge resistance of the construction provided by others should not exceed 20 Pa at a nominal volume flow rate
  
  
• Use of 3 energy-saving EC centrifugal fans, supply and extract air fan classified in category SFP 1 (< 500 W/(m³/s)) according to EN 16798-3:2017-11, electrical power consumption of the entire unit at a nominal volume flow rate of 200 m³/h is <25 W, for rating of the connecting cable a power rating of 255 VA has to be considered
  
  
• Suitable for up to 5 speed levels (between 170 and 300 m³/h), signalling via device-internal single room control system, volume flow rate level correction by adjusting the control voltage subsequently possible
  
  
• Meets the requirements of EU Regulation 1253/2014 (ErP Directive)
  
  
• Integral recuperative cross flow heat exchanger (heat recovery) for heat recovery in a salt water resistant aluminium design, with high efficiency due to special plate structure, plate spacing and package length, including condensate drip tray and discharge into the condensate drip tray of the heat exchanger. Accessibility for maintenance purposes via separate service cover without removing the unit cover
  
  
• With electromotive bypass which allows an air volume flow rate to bypass the heat recovery, actuator 24 V (modulating), 100 %, signalling via device-internal single room control system
  
  
• Self-powered non-return dampers in the outdoor/exhaust air area that are integrated into the locking devices for outdoor air and exhaust air can be hinged down, and these prevent a return flow of conditioned air or undesired airflow directions when the shutoff damper device is opened and closed
  
  
• Motorised shut-off dampers in the outdoor/exhaust air area, normally closed when there is no power by means of energy storage, actuator 230 V, open/closed, signalling via device-internal single room control system
  
  
• Integral mechanical self-powered volume flow limiter type VFL, maintenance-free, pre-set to a maximum volume flow rate, without electrical external power supply for maximum limiting of the outdoor air flow rate to a pre-set value for all façade positive pressure situations. The VFL consists of the control unit with setpoint value adjustment and control mechanics. Control is mechanical self-powered with damper blade. Control spring and low-friction, silicone free cushioning element, any installation orientation and maintenance-free, high control accuracy of ±10 %, referring to the maximum in the pressure range of between 30 and 300 Pa
  
  
• Automatic switching to secondary air mode (only with an air quality sensor) if the indoor air quality (measured, for example, at the integrated CO2₂sensor) is within the limits defined beforehand
  
  
• Electrical components contained in the unit completely wired with FSL-CONTROL III, control components are integrated in the unit. Cable for connection (connection not in the TROX supply package) of the power supply (L, N, PE) with wire end ferrules led approx. 1 m out of the unit: As a transfer point to the electrical installation provided by others:
  • Supply voltage (230 V): 3 wires, 3 × 1.5 mm² (L, N, PE)
    
    
• Connection possibility for bus communication (optional), connection of control panel, etc. after opening the customer area of the controls, as a transfer point to the controls provided by others
  
  
• Rail mount terminals type Wago 260 for the connection (provided by others) of
  • Digital inputs DI
  • Digital outputs DO
  • Master-slave connection RS485
  • Central BMS connection (optional) RS485
  • Control panel
  • RJ45 socket as service access to the user interface
    
    
• The following sensors are arranged in the unit to control the single room control system (the actual room temperature is recorded at the control panel):
  • Indoor air quality sensor CO2₂
  • Supply air temperature measurement after the heat exchanger
  • Outdoor air temperature measurement in the outdoor air intake
    
    
• 4-pipe aluminium copper tube heat exchanger for air heating or air cooling, matched to project-specific data, easily removable for cleaning (depends on the connection to the main pipe - by others, not included in the TROX supply package), drainage and venting option per heating/cooling circuit, arrangement on the room side on the right. We recommend a connection to the pipe network (provided by others) with flexible hoses (not included in the TROX supply package) so that the heat exchanger can be easily removed for cleaning
  
  
• Transfer points are the manually pre-assembled control components
  • Valves in the return: transfer with G ½" external thread, flat seal
  • Lockshields in the flow: transfer with G ½" external thread, flat seal
    
    
• Easy-to-clean condensate drip tray made from galvanised sheet steel, powder-coated RAL 9005, with condensate drain Ø 12 x 1 [mm]
  
  
• Outdoor air filter as Mini Pleat filter, class ePM1 (fine dust filter):
  • Filter class to ISO 16890: ISO ePM1 65%
  • Eurovent-certified
  • ePM1 filter media made from high-quality, wet-strengthened glass fibre paper are pleated, the spacers are made from thermoplastic hot melt adhesive and ensure uniform spacing (4 mm) between the pleats
  • The frame is made from moisture-resistant non-woven fibre with lugs (for pulling it out) and must not reduce the flow cross-section (filter size = flow cross-section)
  • Filter area >= 1.6 m²
    
    
• Extract air filter class G3 (coarse dust filter) as flat filter medium, filter class according to ISO 16890: ISO coarse 55%
  
  
• Quick change of the filters is possible, since the filter insert can be opened without tools after opening the outer casing (by others) via user-friendly quarter-turn fasteners (accessibility must not be restricted by the under sill trim that is provided by others)
  
  
• Possibility of supporting a window sill provided by the customer, intake of the extract air is below the window sill, on the top of the unit
  
  
• Closed cell sealing tapes for sealing and adaptation to the outer casing provided by others (not included in the TROX supply package)
  
  
• The under sill trim provided by others (supply package by TROX possible on request) has to be perforated in areas of the radiator to be specified for the introduction of supply air into the room and must not restrict maintenance work and unit assembly/disassembly on the front of the unit. On the top of the casing, there is also a perforation in areas to be specified for extract air removal
  
  
• Clear distance between the front edge of the unit and the inner edge of the under sill trim approx. 30 mm
  
  

The front of the device must be completely accessible after disassembly of the outer casing

Units, dimensions and weight: 

• Width: approx. 1150 mm (including side setup angles)
  
  
• Height: approx. 670 mm (without seal for window sill, without height adjustment)
  
  
• Depth: approx. 320 mm (without compressible façade seal on the back of the unit)
  
  
• Weight: approx. 75 kg