PIV ONE PLUS+ Loft Mounted Positive Input Ventilation Unit Heater & Advanced Control

The Elta PIV ONE PLUS+ is a loft mounted whole house positive input ventilation unit with a built-in heater and advanced control. It supplies fresh, filtered air to the central hallway or landing at up to 216 m³/h (60 l/s) at 100 Pa, curing condensation and mould and reducing radon gas concentration, while the heater tempers the incoming air for comfort.It has the same double filtration as the PIV ONE (washable magnetic pre-filter plus ISO Coarse 60% G4 filter, upgradeable to an IAQ PM2.5 filter) and adds dip switch control of heater set point, heat recovery boost from a warm loft and summer standby. Maximum power with the heater on is 400W, Elta quote 27 dB(A) at 3m, and it carries a 5 year warranty. Up to 216 m³/h Built-in heater Double filtration as standard What it is best used forHouses and bungalows with a loft where condensation and mould need curing but the occupants would feel unheated incoming air as a draught, for example elderly residents, social housing and rented homes. The heat recovery function speeds the unit up when the loft is warm to bring free solar heat into the home.Like any loft PIV it needs a loft above a central landing; flats without one should use the SANO IPIV WALL H. The heater adds running cost when it operates (up to 400W), so set the heater temperature sensibly.Why choose this over alternativesOver the PIV ONE, the PLUS+ adds the heater and advanced control: heater set point, heat recovery boost when the loft is warm and summer standby to stop warm loft air being pushed in on hot days. The airflow, filtration and footprint are the same.The SANO IPIV LOFT H offers a similar heated specification with Elta's ECO-LoFlo moisture based airflow control and eight installer airflow settings, if you prefer that control approach.Installation notes Mount the unit horizontally on the loft floor or the underside of the roof structure, on a flat surface that will take its weight; anti-vibration mounts (not supplied) are recommended. Fit the ceiling diffuser centrally on the top floor hallway or landing. Near a smoke alarm, fit the supplied blanking plates so air does not blow across it. In homes of 3 storeys or more, interlock the unit with the smoke alarm so it powers down when the alarm sounds; the standard diffuser is not suitable for 3 storey or higher homes or fire protected areas. Leave access to the filters and terminal box, and provide an omnipolar isolating switch. Installation by an authorised installer. Set the heater temperature, heat recovery trigger and summer standby thresholds on the dip switches during commissioning. Browse more positive input ventilation (PIV) units or domestic fans, or call us for help choosing the right product.Specifications Model PIV ONE PLUS+ Brand Elta Type Loft mounted PIV with heater Heater Yes (built-in) Max airflow 216 m³/h (60 l/s) at 100 Pa Power 400W max with heater Sound pressure 27 dB(A) at 3m Filtration Magnetic washable pre-filter + ISO Coarse 60% (G4) Supply 220 to 240V 50/60Hz Warranty 5 Year Manufacturer Motor EC IP rating IPX2 Max ambient temperature 40°C Control Dip switch heater set point, heat recovery and summer standby Mounting Horizontal, loft floor or ceiling Manuals & Guides Elta PIV ONE PLUS+ Datasheet Elta PIV ONE PLUS+ Installation