2
Installation and Wiring Instructions for the
Lo-Carbon PoziDry Compact Positive Ventilation Unit.
IMPORTANT:
READ THESE INSTRUCTIONS BEFORE COMMENCING THE INSTALLATION
SAFETY AND GUIDANCE NOTES
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 should be provided with a 3A fused, 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 is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
7. Children should be supervised to ensure that they do not play with the appliance.
A.
INTRODUCTORY NOTES
The Vent-Axia Lo-CARBON POZIDRY COMPACT is a positive input ventilation unit, designed to be installed in
apartments taking fresh air from outside and supplying the air, filtered, into the building.
The Lo-Carbon PoziDry Compact has two fully adjustable speed settings; ‘Trickle’ and ‘Normal’. These speeds are
set on installation, but to aid commissioning there are pre-marked settings to suit the characteristics of the house
The unit uses a sensor to monitor the incoming air temperature, automatically adjusting the air volume when
necessary.
‘Trickle’ speed is automatically selected when the ambient incoming temperature is less than 18°C.
‘Normal’ is automatically selected when the ambient incoming temperature is between 18°C and 27°C.
If the ambient incoming air temperature exceeds 27°C, the unit will automatically switch to standby (no airflow, LED
displaying one segment). The standby power consumption is 2W.
In the case of the integral heater version, the heater element is automatically activated when necessary and tempers
the supply air to between 10°C and 20°. This temperature can be set using the adjuster located between the Trickle
and Normal speed adjusters.
By wiring in a switch on installation it is possible to switch off the heater if its use is not necessary. See wiring
section.
The Vent Axia Lo-Carbon PoziDry has the capability to run on Purge setting (maximum speed); this is particularly
useful for installations where condensation has been a severe problem in order to help dry the property out. Mould
will turn to a dry grey powder when dried out and should be vacuumed up.
To enable ‘Purge’ speed, connect a switched live connection to the LS core on the integral mains flying lead. See
WIRING on pages 5 and 6 and the notes on page 7.
The unit also incorporates a non-resettable elapsed hours counter.