2.
INTRODUCTION
The HV PIV LOFT is a positive input ventilation unit suitable for installation in a loft. It continuously supplies fresh air through a single, Supply Air
Valve, situated on the ceiling of the top floor in a central hallway or landing.
The unit is suitable for hanging using the cord provided or roof joist mounting.
WHAT IS IN THE BOX
1. Fan Unit with Pre-wired 3 Pin Plug and Lead
2. Filter
3. Flexible Duct
4. Control Box
5. Control Box Connection Cable and Jack Plug
6. Supply Air Valve
7. Installer Label
8. Dyno-ties
9. Hanging Cord
10. Installation and Maintenance Instructions
PRE-INSTALLATION LOFT CHECK
Prior to installation the loft should be inspected to ensure there is adequate ventilation of the loft. The presence of daylight is a good indication of a loft
that is suitably ventilated. Advice should be obtained if the loft is tightly sealed.
There should be no leaks from the house into the loft. Extractor fans should not discharge straight into the loft. Loft hatches and holes for ceiling lights
should be adequately sealed.
The unit must not be installed in a loft space that is open to another property’s loft space e.g. in a terraced home without a barrier between loft spaces.
TECHNICAL SPECIFICATIONS
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Acoustically lined, painted metal fan casing incorporating high efficiency mixed flow fan.
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Supplied with white painted metal Supply Air Valve.
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An ultra-quiet EC motor / fan assembly.
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G4 filter fitted provided as standard with large surface area to provide long filter life and efficient filtration of incoming air.
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Supplied with quality flexible duct to connect fan unit and supply air valve.
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Single duct connection to supply fresh clean air without the need to create holes in external walls.
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Control box (HV-POT-10-TB) and cable supplied as standard.
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Power Supply 230V - 50 / 60Hz.
OPERATION
The HV PIV LOFT Unit can be set to operate in a number of different ways using the control box (HV-POT-10-TB) supplied which is connected to the
Fan Unit using a supplied length of connection cable incorporating a jack plug. Wiring diagrams 2-7 which follow show the various control options
possible and wiring diagrams for each.
