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Installation and Wiring Instructions for the 

Lo-Carbon PoziDry Pro Positive Ventilation Unit.

 

 
SAFETY AND GUIDANCE NOTES 

 

     IMPORTANT: 
     READ THESE INSTRUCTIONS BEFORE COMMENCING THE INSTALLATION 

 

1. 

DO NOT install this product in areas where the following may be present or occur: 

1.1.  Excessive oil or a grease laden atmosphere. 
1.2.  Corrosive or flammable gases, liquids or vapours. 
1.3.  Ambient temperatures higher than 40°C or less than -5°C. 
1.4.  Possible obstructions which would hinder access or removal of the Fan. 
1.5.  Relative humidity above 90% 
1.6.  Sudden ductwork bends or transformations close to the Unit. 

2. 

All wiring to be in accordance with the current I.E.E. Regulations, or the appropriate 
standards of your country and MUST be installed by a suitably qualified person. 

3. 

The fan must be provided with an isolator switch capable of disconnecting all poles, 
having a contact separation of at least 3mm. 

4. 

Ensure that the mains supply (voltage, frequency, and phase) complies with the fan’s 
rating label. 

5. 

The fan should not be used where it is liable to be subjected to direct water spray. 

6. 

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 shall not play 
with the appliance. Cleaning and user maintenance shall not be made by children 
without supervision. 

7. 

Precautions must be taken to avoid the back-flow of gases into the room from the 
open flue of gas or other fuel-burning appliances. 

8. 

Children of less than 3 years should be kept away unless continuously supervised.  

9. 

Children aged from 3 to 8 years shall only switch on/off the appliance provided the 
unit is installed as intended for normal operation and they have been given 
supervision or instruction concerning safe use of the appliance and understand the 
hazards involved.  

10.  Children aged 3 to 8 shall not plug in, regulate and clean the appliance or perform 

user maintenance    

Caution - some parts of this product can become very hot and cause burns. 
Particular attention has to be given where children and vulnerable people are 
present. 

 
A. INTRODUCTORY NOTES

 

 

The Vent Axia Lo-Carbon PoziDry Pro is a positive input ventilation unit, designed to be installed in the loft of a 
dwelling to continually supply filtered fresh air into the building. The system consists of a fan unit, a heater unit (for 
heater models) and a diffuser (for diffuser models) with a short length of flexible ducting. 
 
The Lo-Carbon PoziDry Pro has two fully adjustable speed settings; ‘Trickle’ and Energy recovery’. These speeds 
are set during installation; there are 5 pre-set speeds or an option allowing the speeds to be chosen manually from 
10L/s to 60L/s. The Lo-Carbon PoziDry Pro uses a sensor to monitor the temperature in the loft, automatically 
adjusting the air volume when necessary. 
 

 

The fan will run in ‘Trickle’ speed when the ambient loft temperature is less than 18°C.

 

Summary of Contents for Lo-Carbon PoziDry Pro 476310

Page 1: ...ITH THE ILLUSTRATIONS PLEASE SAVE THESE INSTRUCTIONS Lo Carbon PoziDry Pro Positive Input Ventilation Unit Stock Ref N 476310 PoziDry Pro 476311 PoziDry Pro with Heater 476312 PoziDry Pro FD Installat...

Page 2: ...2...

Page 3: ...e Cleaning and user maintenance shall not be made by children without supervision 7 Precautions must be taken to avoid the back flow of gases into the room from the open flue of gas or other fuel burn...

Page 4: ...at the loft hatch is tightly sealed Ensure that all holes in the ceilings are sealed i e ceiling light fittings etc A visual inspection of any flues or chimneys for leakage in the loft should be carri...

Page 5: ...e adjusted to suit ceiling joists of varying spans Adjust the legs and feet so that the unit spans over two joists Secure the feet to the joists with screws Fig 4 In the unlikely event that the legs c...

Page 6: ...er tighten these screws as this may warp the diffuser Refit the domed cover panel Fit the free end of the flexible ducting to the diffuser spigot using the worm drive clip supplied IMPORTANT SMOKE DET...

Page 7: ...nt Ensure the ducting is securely fixed to the diffuser and fan or heater if applicable via the provided worm drive clips Fig 8 Heater Unit The fan heater unit must not be located directly below a soc...

Page 8: ...e at removing finer particles such as particulate emissions from diesel engines In urban areas close to main roads F7 filters are advisable in order to ensure the supply air is clear of these particle...

Page 9: ...arly qualified person in order to avoid a hazard PoziDry Pro PoziDry Pro with Heater unit Ensure the local AC power supply is isolated The product has a pre wired flying lead Connect the brown core to...

Page 10: ...the connector under the display on the fan 2 Wire the boost switch to the two terminals within the junction box Ensure the cable is secured properly The switch links the two wires together to activat...

Page 11: ...SIONING Accessing the Commissioning Menu If the fan is powered and the display is not lit then press any button to access the menu After 30 seconds without menu activity the display will switch off an...

Page 12: ...ton is pressed the display will show At this point enter the three digit code by first pressing or until the first digit is correct then press MODE to move to the next digit Repeat until the code is e...

Page 13: ...r may be gently cleaned with a vacuum cleaner or washed in a soapy water solution and allowed to air dry before re fitting Do not dry the filter in a tumble dryer When re fitting make sure that the fi...

Page 14: ...Typology CTRL Typology Control Factor CTRL 0 65 0 65 0 65 Control Typology Local Demand Control Local Demand Control Local Demand Control Declared Max Internal External Leakage Rates for BVUs or carry...

Page 15: ...15...

Page 16: ...r warranty if purchased and installed by a recommended contractor against faulty material or workmanship In the event of any part being found to be defective the product will be repaired or at the Com...

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