homevent HV PIV LOFT Installation & Maintenance Manual

Positive input ventilation unit

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Installation &
Maintenance Manual
HV PIV LOFT
Positive Input Ventilation Unit
Please read this manual carefully before using the product and keep it in a
safe place for reference.
This product was constructed up to standard and in compliance with regulations relating to
electrical equipment and must be installed by technically qualified personnel in accordance
with all regulatory requirements. The manufacturer assumes no responsibility for damage to
persons or property resulting from failure to observe the instructions contained in this booklet.
PRECAUTIONS FOR INSTALLATION, USE & MAINTENANCE
The unit is only suitable for installation in single or two storey dwellings, with a "cold roof" construction, where no storey is 4.5 metres or more
above ground level.
The device should not be used for applications other than those specified in this manual.
After removing the product from its packaging, verify its condition. In case of doubt, contact a qualified technician. Do not leave packaging
within the reach of small children.
Do not touch the appliance with wet or damp hands / feet.
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack
of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved.
Children should be supervised to ensure that they do not play with the device.
WARNING: Never use the fan unit without the provided flexible ducting, air valve and filter attached.
WARNING: In order to avoid overheating, do not obstruct the airflow into and out of the fan unit.
Do not use the product in the presence of flammable vapours, such as alcohol, insecticides, gasoline, etc.
If any abnormalities in operation are detected, disconnect the device from the mains supply and contact a qualified technician immediately.
Use original spare parts only for repairs.
The electrical system to which the device is connected must comply with applicable regulations.
Before connecting the product to the power supply or the power outlet, ensure that:
The data plate (voltage and frequency) correspond to those of the electrical mains.
The electrical power supply / socket is adequate for maximum device power. If not, contact a qualified technician.
The unit is designed for use in ambient temperatures of -10 °C up to +60 °C and up to 90% Relative Humidity.
Do not leave the device exposed to atmospheric agents (rain, sun, snow, etc.).
Do not immerse the device or its parts in water or other liquids.
Only turn off the power supply to the unit whenever a malfunction is detected or in the case of inspection, cleaning or maintenance. Prolonged
and/or repeated power interruption to the unit (any period more than 72 hours) can create a health and safety hazard, damage components and
will invalidate any warranty.
For installation, an omnipolar switch should be incorporated in the fixed wiring, in accordance with the wiring regulations, to provide a full
disconnection under overvoltage category III conditions (contact opening distance equal to or greater than 3mm).
Do not obstruct the fan inlet filter or supply air valve to ensure optimum air passage.
Ensure adequate air supply into the loft space in order to ensure proper device operation.
If the environment in which the product is installed also houses a fuel-operating device (water heater, methane stove etc., that is not a "sealed
chamber" type), it is essential to ensure adequate air intake, to ensure good combustion and proper equipment operation.
Install the product so that the impeller is not accessible from the air outlet side as verified by contact with the Test Finger (test probe "B" of the
norm EN61032) in compliance with the current safety regulations.

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  • Page 1 Installation & Maintenance Manual HV PIV LOFT Positive Input Ventilation Unit Please read this manual carefully before using the product and keep it in a safe place for reference. This product was constructed up to standard and in compliance with regulations relating to electrical equipment and must be installed by technically qualified personnel in accordance with all regulatory requirements.
  • Page 2: What Is In The Box

    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...
  • Page 3: Installation

    INSTALLATION Supply Air Valve 51mm 38.5mm The 150mm diameter Round White Metal Ceiling Air Supply Valve is manufactured from White Epoxy Powder Coated Steel. The valve has a male spigot to fit directly to the supplied flexible ducting. The Supply Air Valve is fully adjustable and has a locking nut to fix the position of the control disc upon commissioning. The valve should be open to reduce the power used by the unit.
  • Page 4: Wiring Diagrams

    WIRING DIAGRAMS Wiring Diagram 1 Control Box (HV-POT-10-TB) connected by installer to control box cable on-site, with the control box cable connected to fan unit using the jack plug supplied. 3 pin fused plug on lead pre-wired to fan unit. This should be connected to a suitable 230 volt ac, single phase, 50/60Hz power supply.
  • Page 5 Wiring Diagram 2 Continuous running at Normal Airflow (set via VR2) CONTROL BOX CABLE CONNECTED TO FAN USING JACK PLUG SUPPLIED. BLUE BLACK HV-POT-10-TB VR1 SPEED VR2 SPEED ADJUSTER ADJUSTER LINK...
  • Page 6 Wiring Diagram 3 Continuous running at Normal Airflow (set via VR2) with Boosted Airflow (set via VR1) when triggered by suitable user control switch inside the home provided by installer CONTROL BOX CABLE CONNECTED TO FAN USING JACK PLUG SUPPLIED. BLUE BLACK HV-POT-10-TB...
  • Page 7 Wiring Diagram 4 Continuous running at Normal Airflow (set via VR2) with Reduced Airflow (set via VR1) when triggered by suitable user control switch inside the home provided by installer CONTROL BOX CABLE CONNECTED TO FAN USING JACK PLUG SUPPLIED. BLUE BLACK HV-POT-10-TB...
  • Page 8 Wiring Diagram 5 Continuous running at Normal Airflow (set via VR2) with Boosted Airflow (set via VR1) when triggered by suitable humidistat or other IAQ switch inside the home provided by installer CONTROL BOX CABLE CONNECTED TO FAN USING JACK PLUG SUPPLIED. BLUE BLACK HV-POT-10-TB...
  • Page 9 Wiring Diagram 6 Continuous running at Normal Airflow (set via VR2) with Heat Recovery Increased Airflow (set via VR1) when triggered by suitable thermostatic switch in the roof space provided by installer CONTROL BOX CABLE CONNECTED TO FAN USING JACK PLUG SUPPLIED. BLUE BLACK HV-POT-10-TB...
  • Page 10 Wiring Diagram 7 Continuous running at Normal Airflow (set via VR2) with Comfort Control Decreased Airflow (set via VR1) when triggered by suitable thermostatic switch in the roof space provided by installer CONTROL BOX CABLE CONNECTED TO FAN USING JACK PLUG SUPPLIED. BLUE BLACK HV-POT-10-TB...
  • Page 11: Standard Conformity

    SETTING SUPPLY AIR VALVE OPENING To optimise air distribution and limit noise, the installer must ensure that the front edge of the adjustable control disc is fixed in place flush with the peak of the curved edge of the outer body of the Supply Air Valve. The installer should ensure that the Supply Air Valve is locked in the open position shown above.
  • Page 12 Installation Company Name and Address: Tel: Email: Details of CPS Membership: CPS Membership Number: Installation Date: COMMISSIONING & COMMISSIONING ENGINEERS DETAILS – FOR HV PIV LOFT UNIT Installation Address: Commissioning Engineer’s Name: Commissioning Company Name and Address: Tel: Email: Details of CPS Membership:...
  • Page 13 SERVICING REQUIRED & SERVICE RECORD - FOR HV PIV LOFT UNIT Name of Person (and Servicing Required Company if Applicable) Who Date Servicing Done Carried Out Service Vacuum clean filter if required 1st Service and clean supply air valve and...
  • Page 14: Warranty

    Installation and Maintenance Instructions (supplied with each product) and which are also available to view, save or print from our website. Tel: +44 (0) 1384 275822, Email: sales@homevent.co.uk 46 Third Avenue, Pensnett Trading Estate, Kingswinford, West Midlands, DY6 7US, UK www.homevent.co.uk HV PIV LOFT. ISSUE A. 07.22...

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