Under sill units Type SCHOOLAIR-B For installation under the sill

Contents · Description Description __________________________________ Functional description __________________________ Construction · Dimensions ______________________ Outer casing________________________________ Operation and control Control panel ______________________________ Master-slave-operation ______________________ Installation __________________________________ 9 Technical data________________________________10 Order Details ________________________________11 Decentralised ventilation units type SCHOOLAIR-B provide an individual and energy-efficient ventilation of class rooms and other...

Functional description Ventilation units SCHOOLAIR-B maintain a high air quality in class rooms by supplying conditioned fresh air to the room and extracting ‘stale’ air. The supply air fan provides fresh air, which flows through a shut-off damper and a fine dust filter. In case the unit is switched off, a shut-off damper prevents uncontrolled air flow. The Class F7 fine dust filter corresponds to the hygiene requirements of VDI 6022. For the thermal conditioning of the fresh air a heat exchanger for heat recovery and as an option a heat exchanger for heating and / or cooling. The heat recovery...

Construction · Dimensions – Heat exchangers for two or four pipe systems – Outer casing for the unit with grilles for supply and extract air i.e. linear grilles or perforated sheet metal face plates – Single room control system including control panel, sensors and actuators – Casing and drip tray made of galvanised sheet steel – Heat exchanger for heat recovery in aluminium – Lining is mineral wool conforming to DIN 4102, fire rating class A2, faced with fibreglass as protection against erosion suitable for air velocities up to 20 m/s – Sealing strips from a closed-cell material – Exposed surface...

Construction · Dimensions Outer casing Ventilation units without factory made outer casing are enclosed by others or installed into existing outer casings. In this case the grilles for supply and extract air are supplied by others. Ventilation units can have an attractive TROX outer casing made of sheet steel. Grilles for supply and extract air are part of the outer casing. Linear grilles with horizontal blades or perforated sheet metal face plates are available. Outer casing Outer casing with perforated sheet metal face plates – Outer casing with integral linear grilles or perforated sheet metal...

Operation and control Control panel SCHOOLAIR control SCHOOLAIR control as an accessory provides an individual room control system that is ideally tailored to the SCHOOLAIR ventilation units. The controller has the necessary electronics to connect and communicate with control panels, temperature sensors, room air quality sensors and actuators and the software for control. Control components: – SCHOOLAIR controller – Control panel – Water valves for hot and/or chilled water – Valve actuators – Supply air temperature sensor – Room air quality sensor – Fresh air temperature sensor Ventilation units...

Operation and control Control panel Operating modes Room temperature setpoint A responsible use of energy is provided with demand-based operating modes. A comfortable room temperature is maintained only in occupied rooms. User setting range of room temperature Night cooling period Operating mode: Stand-by Operating mode: Morning-warm-up Operating mode: School Operating mode: Unoccupied User setting range of room temperature Night cooling Operating modes Room temperature setpoint Flow rate User pushed occupancy button User pushed occupancy button or 16:00 User pushed occupancy button 7:15 or School...

Operation and control Master-slave-operation Master and slave units Each ventilation unit requires a SCHOOLAIR controller operating as a master or slave to set the fan speed and to control the valves. For the individual room control and user operation each room must have a master ventilation unit. If there are multiple ventilation units in one room, the other maximum five units become slaves. Additional components for the master unit: – Control panel (-MB) – Fresh air temperature sensor – Room air quality sensor (VOC) – For connection of the control panel a cable end is available outside the...

Installation The customer must install the ventilation units, make all connections, and provide the fixing system, connection and sealing materials. Only trained expert personnel should install and make the appropriate connections. All legal regulations for site work must be complied with. The ventilation units are mounted on an external wall beneath the sill. The unit is set directly on the floor, adjusted and fixed using the brackets. Closed-cell sealing strips produce tight connection to the wall. Fresh air and exhaust air connections Two openings with 220 to 250 mm diameter with a slope to...

Technical data Electric data Supply voltage: Power rating: Boost: 45 W Medium fan speed (55 l/s / 200 m³/h): 17 W Rating: 156 VA Heating capacity With outside temperatures below −6 °C the heat recovery is not active, to avoid freezing in the heat exchanger for heat recovery. The maximum heating capacity is in this case provided by the heat exchanger of the hot-water heating system. Above −6 °C outside temperature the heat recovery is active and a portion of heat in the extract air is transferred to the fresh air. Hence the heating capacity provided by the hot-water heating system is reduced....

Order Details Specification text Decentralised ventilation units for individual and energyefficient ventilation of class rooms and other rooms in schools. Suited for horizontal installation on an external wall under the sill. Supply and extract air unit consisting of a casing with brackets, and two fans, two filters, heat recovery, shut-off dampers, bypass damper, sound attenuators, heat and sound insulation. Special characteristics: – Economic operation due to demand-based fresh air flow rate – Energy-efficient EC radial fans according to EN 13779, Class SFP 1 Ventilation with four fan speeds...