Type FSL-B-ZAS

Secondary air unit for supply air and extract air, with heat exchanger and heat recovery, for installation under the sill

 

Ready-to-operate decentralised ventilation unit that provides good comfort levels, used for the ventilation and extract ventilation of rooms

  • Acoustically optimised EC fans with low specific fan powers, SFP = 1 according to EN 13779
  • Counter flow heat exchanger for heat recovery (air/air), including variable bypass
  • Heat exchanger for heating and cooling as 2-pipe or 4-pipe system
  • Reduction of fine dust and pollen contamination due to integral filters that conform to VDI 6022 – F7 fresh air filter and G3 extract air filter
  • Condensate drip tray with condensate drain
  • Motorised shut-off dampers, normally closed (NC)
  • Self-powered or motorised secondary air damper for adding secondary air to increase the thermal output


Optional equipment and accessories

  • Modular control system X-AIRCONTROL, specially for decentralised ventilation systems
  • Free cooling and night purge, depending on control strategy
  • Various fixing systems to fix the unit to the floor or wall; a frame is also available
  • Powder coating in many different colours, e.g. RAL CLASSIC
small_tab1_Serie FSL-B-ZAS
  • Application
  • Description

Application

  • Ventilation of rooms, preferably rooms with a depth up to 6 m
  • 2-pipe or 4-pipe heat exchangers enable good comfort levels
  • Inducing displacement flow
  • Energy-efficient solution since water is used as a medium for heating and cooling
  • For new buildings and refurbishment projects
  • Installation under the sill
  • Typical installation locations include offices and meeting rooms

Special characteristics

  • Motorised shut-off dampers for fresh air and exhaust air, normally closed (NC) in order to prevent uncontrolled airflows
  • Recuperative heat recovery with motorised bypass (heat recovery > 80 %)
  • Heat exchanger as 2-pipe or 4-pipe system, with G½" union nuts and flat seals
  • Meets the hygiene requirements of VDI 6022
  • Filter class: F7 for fresh air, G3 for extract air
  • Condensate drip tray with condensate drain
  • Compact construction, hence particularly suitable for refurbishment projects
  • Demand-based ventilation is possible by means of monitoring the room air quality and with dedicated control equipment
  • Installation into a frame

Construction

  • Powder-coated RAL 9005, black, gloss level 70 %
  • P1: Powder-coated in any other RAL colour, gloss level 70 %

Useful additions

  • Modular control system X-AIRCONTROL, specially for decentralised ventilation systems
  • Connecting hoses

Construction features

  • 2 energy-efficient EC fans with low specific fan powers, SFP = 1 according to EN 13779
  • Fresh air flow rate: up to 170 m³/h
  • Counter flow heat exchanger for heat recovery, including motorised bypass damper
  • The supply air is discharged to the room as an inducing displacement flow from the lower part of the unit
  • Extract air is taken in to the upper part of the unit

Materials and surfaces

  • Casing, filter chamber cover, fans and levelling feet are made of galvanised sheet steel
  • Heat exchanger with copper tubes and aluminium fins
  • Plate heat exchanger made of aluminium
  • Casing is powder-coated RAL 9005, black, or in any other RAL colour
  • F7 filter medium made of moisture-resistant glass fibre paper (certified by Eurovent)
  • Mineral wool lining to DIN 4102, fire rating class A, faced with glass fibre fabric as a protection against erosion, effective with airflow velocities up to 20 m/s
  • Closed cell sealing strips

Technical information

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code
fsl-b-zas

Functional description

Decentralised supply air and extract air units with secondary air function for room ventilation and extract ventilation and for dissipating cooling loads and heat loads.

An EC centrifugal fan takes in the fresh air which then flows through the motorised shut-off damper and the F7 filter.

Once the fresh air has passed the fan, it flows through the recuperative heat exchanger for heat recovery; it is possible to bypass the recuperative heat exchanger in order to protect it, or when it is sensible with regard to energy efficiency.

If necessary, the air is heated or cooled by the heat exchanger before it is discharged to the room as an inducing displacement flow.

If necessary, secondary air is added to the fresh air in order to increase the supply air flow rate and hence the thermal output.

The extract air first passes a G3 filter, then flows through the heat exchanger (for heat recovery), the extract air fan and the motorised shut-off damper before it is discharged to the outside as exhaust air.

fsl-b-zas
fsl-b-zas

 

Decentralised supply and extract air units of Type FSL-B-ZAS, with secondary air function and with heat recovery and heat exchanger, for installation into the façade system using a frame.

Special characteristics

  • Motorised shut-off dampers for fresh air and exhaust air, normally closed (NC) in order to prevent uncontrolled airflows
  • Recuperative heat recovery with motorised bypass (heat recovery > 80 %)
  • Heat exchanger as 2-pipe or 4-pipe system, with G½" union nuts and flat seals
  • Meets the hygiene requirements of VDI 6022
  • Filter class: F7 for fresh air, G3 for extract air
  • Condensate drip tray with condensate drain
  • Compact construction, hence particularly suitable for refurbishment projects
  • Demand-based ventilation is possible by means of monitoring the room air quality and with dedicated control equipment
  • Installation into a frame

Materials and surfaces

  • Casing, filter chamber cover, fans and levelling feet are made of galvanised sheet steel
  • Heat exchanger with copper tubes and aluminium fins
  • Plate heat exchanger made of aluminium
  • Casing is powder-coated RAL 9005, black, or in any other RAL colour
  • F7 filter medium made of moisture-resistant glass fibre paper (certified by Eurovent)
  • Mineral wool lining to DIN 4102, fire rating class A, faced with glass fibre fabric as a protection against erosion, effective with airflow velocities up to 20 m/s
  • Closed cell sealing strips

Construction

  • Powder-coated RAL 9005, black, gloss level 70 %
  • P1: Powder-coated in any other RAL colour, gloss level 70 %

Technical data

  • Width: 1245 mm
  • Height: 800 mm
  • Depth: 400 mm
  • Fresh air flow rate: up to 170 m³/h
  • Supply air flow rate: up to 170 m³/h
  • Cooling capacity: 760 W
  • Heating capacity: 2850 W
  • Max. operating pressure, water side: 6 bar
  • Max. operating temperature, water side: 75 °C
  • Sound power level: 38 – 46 dB(A)
  • Supply voltage: 230 V AC ± 10 %, 50/60 Hz
  • Rating: 75 VA
  • Power consumption: 44 W with boost level, 20 W with medium speed (nominal volume flow rate)
fsl-b-zas

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Contact

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265