Passivent Thermal Hybrid Aircool® - Wall/ Window Ventilator with Heater

The Thermal Hybrid Aircool® ventilator (without external weather louvre) is an additional version of the Hybrid Plus2 Aircool® ventilator with a restyled room-side ventilation outlet that incorporates an inline LTHW heater unit. The Thermal Hybrid Aircool enhances the existing range of Aircool ventilators.

The heater unit consists of a LTHW 6 kW duty heater coil which connects to the building’s wet heating system to provide additional tempering of incoming outside ventilation air. This will not only minimize cold draughts but also contribute to room space heating requirements.

Features and benefits:

• Includes an integrated Aircool window or wall damper unit for incorporation into the building facade.
• Subject to overall heating design strategy, this can provide the primary heating for the room. 
• Flow rate up to 145 L/s when in mechanical mode with inlet and outlet resistances equal.
• Equivalent free area of 0.054 m² (passive mode).
• Overall size of internal mixing and heating unit (non-ducted): 967 x 330 x 1465 mm (w x h x d)
• Available as integrated grille outlet or ducted outlet options.
• Can be fixed directly to the structural ceiling members or via drop rods.
• Operated by Passivent’s iC8000 controller which can then be connected to a Building Management System (BMS).

Operational modes:

• Passive mode: Without fan assistance this mode means that the unit can be used for background ventilation providing an equivalent area of 0.054 m².
• Mixing mode: During cooler periods, the unit will mix a percentage of existing room air directly into the incoming fresh air as it is drawn in by the fan, before being discharged into the room space. Recirculated room air percentage and external damper opening is varied in response to room CO₂ level.
• Boost mode: In hotter periods the unit can be used to promote air movement and/or provide purge ventilation by forced ventilation via the fan, with the inlet damper fully opened and room air recycling closed off.
• Pre-heating mode: In cooler periods, when the external temperature is below the minimum setpoint, air is recirculated and the heater coil is activated to provide additional heat input in order to raise the room temperature. 
• Occupied heating mode: As with the above mixing mode, not only will the unit temper the incoming fresh air by mixing it with the existing room air but if the room CO₂ is at a level where increased fresh air flow is required and the external temperature is below the setpoint figure then the heater coil will be activated in order to provide additional pre-warming to the incoming fresh air.