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SAP Appenix Q recognised, a new breed of high efficiency
MVHR units designed to save energy and function reliably with extremely low
running costs.
Key features
Type: Mechanical ventilation with heat recovery
Application: Wholehouse system
Control options: 3 speed
Legislation: Building Regulations BRE Digest 398 (1994), SAP Appenix Q recognised
Spigot diameter: 150mm
The range
New building regulations are striving to improve energy efficiency in the home and reduce CO2 emmissions.
Part L places greater emphasis on airtightness in new homes to reduce the energy loss through uncontrolled air leakage, so the need for an intelligent controlled ventilation strategy is becoming more critical.
Wholehouse ventilation with heat recovery, is often referred to as MVHR.
It provides a constant background flow of fresh tempered air to the living spaces of a ‘tight home’ whilst extracting condensation, smells, tobacco smoke and volatile organic compounds via kitchens, bathrooms and toilets. The resultant lower humidity deprives the house dustmite the conditions in which to breed, thus contributing to a healthier environment.
The Xpelair Xcell 270 is one of a new breed of high efficiency MVHR units designed to save energy and function reliably with extremely low running costs. It maintains a cosy indoor environment during the colder months and provides an ‘aired’ feeling even when the building has been closed up for long periods.
The Xpelair cell is housed in an insulated cabinet and integral filters are designed to make access to the cell unnecessary – keeping maintenance to a minimum.
Xpelair LongLife DC fan units not only ensure a low running cost but they are also much more efficient than ac motors – keeping energy usage down.
A choice of ten preset performance programmes enables flexible control over air quality and when combined with a manual switch or automatic sensor, the ventilation rate can be increased temporarily to reduce humidity – perfect for bath and shower rooms.
Fitted with a fan failsafe interlink, if one fan is stopped, the other will automatically switch off - particularly important in homes with open fires or unvented boilers.
Housed in a stylish cabinet, the Xcell 270 can be unobtrusively mounted in an airing cupboard, on a kitchen wall or within a roof space.
Three speed selector switch
Ref. 91266AW
- Three speed selector switch for low (night-time), medium (daytime) and high (boost setting).
- Dimensions: w81 x h152 x d62mm
| | Xcell270BP | Xcell270 |
| Code | 91265AW | 91264AW |
| Max house volume (m3) | 540 | 540 |
| Summer bypass | yes | no |
| Longlife dc motor | yes | yes |
| Efficiency (%) | 90 | 90 |
| 3 speeds selected during installation | yes | yes |
| Typical Performance (m3h) - High | 290 | 290 |
| Typical Performance (m3h) - Medium | 175 | 175 |
| Typical Performance (m3h) - Low | 110 | 110 |
| Max static pressure (Pa) | 300 | 300 |
| Max sound pressure (dBA@3m) | 40 | 40 |
| Power (W) - high | 180 | 180 |
| Power (W) - low | 40 | 40 |
| Wall mounting | yes | yes |
| Roof space fitment | yes | yes |
| Spigot (mm) | 150 | 150 |
| Colour | beige | beige |
| Weight (kg) | 28 | 28 |
| Guarantee (years) | 5 | 5 |
Xcell 270 Whole House Mehanical Ventilation and Heat Recovery (MVHR) unit
Ref. 91264AW:
- Wall hanging bracket provided
- Steel powder coated cabinet
- Beige finish
- High density foam insulated cabinet lining/scroll construction with built in double sided condensate tray with choice of drain positions
- Polymeric, robotically assembled heat recovery cell with bonded seals to eliminate cross air leakage
- ContraFlow cell design providing heat recovery efficiently up to 95% (Independent TZWL laboratory tests)
- Two stage 1 G4 filters, which are removable for easy cleaning
- Hinged access door for access to the cell and filters
- 3 speeds from 10 available (via on board dip switches to suit dwelling volume) or low with switched higher speed. Factory set at the three most popular outlet settings
- Motors are LongLife DC, maintenance free with sealed for life bearings
- The integrated electronic control system ensures equal constant outputs from both sides of the ducted resistances of the unit
- XFFI system automatically switches both fans off if one fan fails to rotate
- Complete with pre-wired connection cable
Xcell 270BP with Summer Bypass
Ref. 91265AW:
- All the features of Xcell 270 plus a built in summer by pass which diverts
the incoming air directly into the dwelling without passing through the
heat exchange cell.
- During hot periods this ensures that comparatively cooler incoming fresh
air is not further heated by warmer air exhausted from the dwelling.
- This is particularly useful on summer evening when the outside temperature
falls faster than that inside
Model / Ref
Xcell 270 / 91264AW
Xcell 270BP / 91265AW
- The MVHR unit shall be designed for installation in well insulated dwellings
- The unit shall be wall mounted using a wall bracket provided with 150mm duct spigots ready for connection to supply and return air ducts and ductwork to a wall or roof termination
- The cabinet shall be manufactured in steel and powder coated in beige
- The inner components and scroll shall be made from non hygroscopic high density structural foam mouldings with an integral double condensate tray. Provision shall be made for alternative condensate drain off points
- A hinged door shall be provided on the front of the cabinet for access to the stage 1 G4 filters and occasional visual inspection of the cell
- The unit shall have 3 speed from a choice of ten to match the volume of the dwelling in order to provide half an air change per hour continuous ventilation including the choice of a boost speed if required. As a result the heat recovery cell shall be up to 93% efficient -certified by TZWL, depending on chosen speed. The fans shall be electronically balanced to provide equal extraction and air supply
- The motors shall be LongLife DC motors with maintenance free greased for life ball bearings
- A supply lead shall be provided to facilitate wiring
- Overall dimensions H x W x D
712mm x 692mm x 454mm
add 55mm for spigots
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