Lo-carbon hr25 single room heat recovery unit installation and wiring instructions stock ref. N° 372261a hr25 372262a hr25h 372263a hr25p 372264a hr25l 372265a hr25lh 372266a hr25lp please read instructions in conjunction with illustrations. Please save these instructions.
372268 - 2 1.0 introduction 3 2.0 site requirements 4 3.0 installation 5 4.0 maintenance 13 5.0 short parts list 14 section page contents.
1.0 introduction 3 372268 - 1.1 description 1. Th e vent-axia hr25 range of products are “through the wall” heat recovery ventilators for use in areas such as bathrooms and wcs. 2. The units are fitted with a 24v dc motor and are supplied with a switch mode power supply (s.M.P.S.). On normal setting...
Fig.2 fig.3 2.0 site requirements 2.1 information 1. The unit is designed for installation in external walls with a thickness of up to 310mm. For wall thicknesses above 310mm, the ‘l’ version of the appropriate model must be used (see page 12 ). The ‘l’ models are suitable for wall thicknesses up to...
3.0 installation 5 372268 - 3.1 initial preparation the unit is designed for installation in a 152mm (6”) core drilled hole. All installation can be undertaken from inside the building except for fixing of the external bezel if required. 1. After considering the site requirements (see previous secti...
Fig.6 fig.7 hr25 / hr25l only disconnect and make safe white wire for high speed/off fig.8 hr25 / hr25l only disconnect and make safe red wire for low speed/off fig.9 3.0 installation 3.2 installing the power supply unit 1. Remove the power supply unit assembly from the carton. (fig.6) 2. Remove the...
3.0 installation 7 372268 - 3.3 installing the hr25 1. Remove the unit, bezel and fixing pack from the carton. 2. Unclip the removable grille from the unit and remove filter (fig. 10). 3. Loosen the two securing screws and remove the grille surround (fig. 11). 4. Remove the divider board (fig. 11). ...
3.0 installation 8 372268 - 3.4 installing the hr25h 1. Remove the unit, bezel and fixing pack from the carton. 2. Unclip the removable grille from the unit and remove filter (fig. 20). 3. Loosen the two securing screws and remove the grille surround (fig. 21). 4. Remove the divider board (fig. 21)....
3.0 installation 9 372268 - 3.5 installing the hr25p 1. Remove the unit, bezel and fixing pack from the carton. 2. Unclip the removable grille from the unit and remove filter (fig. 25). 3. Loosen the two securing screws and remove the grille surround (fig. 26). 4. Remove the divider board (fig. 26)....
3.0 installation 10 372268 - 3.5 installing the hr25p (cont) if any movement is detected after the first 2 minutes, the unit will switch to its higher setting. This mode has a reset which operates after 5 minutes. 17. Both modes have a timer setting which determines the length of time the unit runs ...
3.0 installation 11 372268 - 3.6 installing the hr25l, lh & lp for wall thicknesses between 311mm & 425mm 1. Remove the control cover and disconnect the red and black motor wires (fig. 35). 2. Carefully withdraw the heat exchanger from the unit (fig. 36). 3. Slide the inner tube out of the unit by p...
3.0 installation 12 372268 - 3.6 installing the hr25l, lh & lp (cont) 5. Measure the wall thickness and add 25mm. This is dimension “x” (fig. 39). 6. Mark off dimension “x” on the outer tube, measuring from the rear of the chassis. Cut off the excess material (fig. 40). 7. Remove any burrs from the ...
4.0 maintenance 13 372268 - 4.1 cleaning the unit (all models) apart from removing odours, providing fresh air and recovering heat, this unit extracts airborne impurities such as dust, dirt and grease. These gradually build up and diminish from the efficiency and detract from the appearance of the u...
1 2 3 4 parts list 5.0 spares list 5.1 spares list key no. Description part no. 1 filter (pack of 4) 370412 2 heat exchanger 372329 3 power supply unit 447249 4 rubber seal 371297.
Introduction the guarantee applicable only to products installed and used in the united kingdom. For details of guarantee outside the united kingdom contact your local supplier. Vent-axia guarantees its products for two years from date of purchase against faulty material or workmanship. In the event...
