Product details

Compact

Easier installation

HRX-aQ - The most compact and versatile unit available!

Space in new build developments is of premium importance and a lack of it, is often an issue associated with MVHR installation. Designed to be the smallest void mounted unit of its type, the HRX-aQ is compact and light enough to be easily installed on a ceiling, leaving space in areas such as utility rooms free for other home appliances, including washing machines and HIU (Heat Interface Units).

Without compromising on efficiency, the HRX-aQ is the most compact unit available and will fit in even the most restrictive ceiling voids.

One-man-lift

At less than 8kgs in weight, the HRX-aQ is the lightest MVHR unit available on the market and can be easily and quickly installed by one person with ease. In comparison, many other units will require a minimum two-man-lift, adding on installation time and costs.

Interlocking duct makes fitting simple

The HRX-aQ has been designed with rectangular socket connections (204x60mm) which enable it to interlock and fit directly to Polypipe’s 204x60mm Domus rigid duct.

Direct connection between the unit and duct will make installation much simpler and removes the need for flexible connectors, thereby improving the performance of the HRX-aQ and ensuring no unsightly flexible ducts are required.

Efficient

Ultimate performance

Whilst the HRX-aQ is the most compact MVHR ceiling unit, its energy efficient performance has not been comprised. Providing Specific Fan Powers as low as 0.66W/(l/s) and a heat exchange efficiency up to 88%, the unit will efficiently lower Dwelling Emission Rates for a higher SAP rating.

200mm deep models 240mm deep models
Typical Installation
Code Bypass Kitchen + 1 wetroom Kitchen + 2 wetrooms
SFP W/(Is) SFP W/(Is)
AQH200-S 0.67 0.77
AQH200-B 0.74 0.83
Code Bypass Kitchen + 1 wetroom Kitchen + 2 wetrooms
SFP W/(Is) SFP W/(Is)
AQH240-S 0.68 0.73
AQH240-B 0.63 0.73
Product Characteristics Database (SAP 2012)
Code Bypass Kitchen + 1 wetroom Kitchen + 2 wetrooms
SFP W/(Is) HE% SFP W/(Is)    
AQH200-S 0.72 87 0.88 84
AQH200-B 0.75 83 0.95 81
Code Bypass Kitchen + 1 wetroom Kitchen + 2 wetrooms
SFP W/(Is) HE% SFP W/(Is) HE%
AQH240-S 0.69 88 0.84 85
AQH240-B 0.69 86 0.84 83
Product Characteristics Database (SAP 2009)
Code Bypass Kitchen + 1 wetroom Kitchen + 2 wetrooms
SFP W/(Is) HE% SFP W/(Is)    
AQH200-S 0.68 87 0.70 87
AQH200-B 0.70 83 0.73 83
Code Bypass Kitchen + 1 wetroom Kitchen + 2 wetrooms
SFP W/(Is) HE% SFP W/(Is) HE%
AQH240-S 0.66 88 0.68 88
AQH240-B 0.66 86 0.68 86

For Total Heat heat exchanger performance figures, please email vent.marketing@polypipe.com

5 STAR unit

Boasting an outstanding 5 STAR ErP performance rating, the HRX-aQ has been cleverly engineered to improve indoor air quality whilst reducing household energy consumption - using very little power.

Advanced control

Designed with the home occupant’s comfort and health in mind, the HRX-aQ aims to revolutionise heat recovery by incorporating features such as wireless control, night time cooling, delay on timer, auto frost protection and intelligent summer bypass.

Intelligently measures air conditions.

Digital humidity control aiding homeowner comfort.

Unlike conventional humidity sensors, the HRX-aQ enables occupants to have direct control over managing the humidity levels in their home - to suit personal comfort levels.

By accurately measuring air humidity, the HRX-aQ’s extract speed automatically changes from background to boost as the level of humidity increases, thereby providing optimal ventilation performance.

Advanced bypass control

Perfect for night time cooling or during warmer periods, the HRX-aQ detects when air temperature reaches a pre-set level and intelligently activates the bypass mechanism; allowing in cooler, fresh and filtered air. The bypass is also programmable by time and temperature, enabling occupants to activate the mechanism.

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Offers optimum efficiency wrapped up in the smallest void mounted MVHR unit available - giving peace of mind for the quietest commissioned systems.

Automated filter maintenance and replacement reminders

Ease of maintenance and filter replacement is an important consideration when specifying MVHR – not only to ensure performance of the unit is maximised and air quality maintained, but also for peace of mind for both the client and occupants.
The HRX-aQ control will therefore remove this concern by providing helpful maintenance reminders for cleaning its filters.

Commissioning made easier

Engineered to include independant speed control, AMIE cleverly allows more accurate commissioning through simple speed adjustment buttons.

  1. Increase value/speed (+)
  2. Decrease value/speed (–)
  3. Set temperature trigger point (TEMP)
  4. Set date and time (DAY)
  5. Set humidity trigger point (HUM)
  6. Adjust summer bypass (BYPASS)
  7. Copy program (COPY)
  8. Select and edit program (PROG)
  9. Escape function (ESC)
  10. Save function (SET)

Total Heat recovery exchanger for maximum air comfort and quality

The range of Silavent HRX-aQ MVHR units also offer options which include specialist ‘Total Heat’ recovery exchangers to further improve air quality and negate the need for a condensation drain. By selecting this heat exchanger, the HRX-aQ will become an Energy Recovery Ventilation (ERV) system, allowing optimal air comfort.

 

Why select an Energy Recovery Ventilator?

• Clean, pre-warmed and OPTIMAL levels of moisture are transferred
• Incoming air is able to harmoniously react with the home environment for greater air comfort

Heat that causes a change in temperature in an object is called sensible heat. For example, when an object is heated, its temperature rises as heat is added - this increase in heat is the sensible heat. Similarly, when heat is removed from an object and its temperature falls, the heat removed is also referred to as sensible heat. Without a heat exchanger, exhausted sensible heat in a dwelling would be lost. All pure substances in nature are able to change their state. Solids can become liquids (ice to water) and liquids can become gases (water to vapor) but changes such as these require the addition or removal of heat. The heat that causes these changes is called latent heat – i.e. the energy that is used to add or subtract moisture from air.

An Energy Recovery Ventilator (ERV) is a type of air-to-air heat exchanger that not only transfers sensible heat but also latent heat. Because both temperature and optimal levels of moisture are transferred, ERVs are considered Total Heat (or total enthalpy) devices. In comparison, a standard Heat Recovery Ventilator (HRV) can only transfer the sensible heat and therefore does not make use of the latent heat.

How enthalpy works

HRX-aQ enthalpy heat exchangers will not just extract otherwise wasted heat from wet rooms but also the latent energy in the humidity. Through a process called diffusion, the HRX-aQ enthalpy allows for the exchange of odourless, pre-warmed air and OPTIMAL levels of moisture to be transferred, so that the incoming air is able to harmoniously react with the home environment – whether it be summer or winter.

HRX-aQ enthalpy heat exchangers therefore maintain an all year round solution for ambient, clean and comfortable indoor air.

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How Exchangers Work

Winter Example

Summer Example

Specific Fan Power combined with heat exchange efficiency is how MVHR units are measured and used towards calculating overall system performance.

Components within an MVHR system such as flexible hose connections detract from the systems overall efficiency.

 

Ultimate performance

By specifying and installing the HRX-aQ in conjunction with our Domus Flow Control Plenums, you will be able to remove flexible connectors from the entire system altogether. Furthermore, when also combined with Domus High Efficiency Green Line Bends, the full system’s performance is outstanding.

Rigid Duct Plenum with Flow Control Device

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Rigid Duct High Efficiency Green Line Bends

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Radial Plenum with and without Flow Control Device

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Quiet

The quietest Silavent MVHR unit in the market

One of the most important considerations in modern MVHR design is noise and its impact on a dwelling’s occupants.

With background (normal) ventilation down to 24dB(A), the HRX-aQ is the quietest Silavent MVHR unit in the market. Manufactured from high density EPP material (expanded polypropylene) for optimum sound reduction, combined with integral flow straighteners for reduced internal resistance, the highly efficient HRX-aQ ensures that break out and induct noise is eliminated.

Sound performance
Codes Speed
control
setting
Flow
rate
(l/s)
Pressure
(Pa)
Power
(W)
Position Sound power levels
dB re 1pW
Sound
pressure
(dB(A) @ 3m)
    Test-Duty Points   63 125 250 500 1K 2K 4K 8K  
AQH200-S &
AQH200E-S
99% 38 96 52 Breakout 46 55 54 62 53 44 41 34 44
70% 27 47 22 Breakout 40 50 54 50 42 39 34 21 34
50% 21 28 15 Breakout * 46 53 43 38 37 31 12 30
33% 15 16 10 Breakout * 41 46 39 34 35 26 6 25
AQH200-B &
AQH200E-B
99% 37 83 52 Breakout 49 57 55 59 51 44 42 33 41
70% 27 40 20 Breakout 43 49 55 53 41 36 32 21 35
50% 21 23 15 Breakout 48 44 53 46 36 30 24 11 30
33% 15 13 10 Breakout 46 40 47 40 32 27 17 3 24
AQH240-S &
AQH240E-S
99% 39 96 52 Breakout 45 54 53 60 53 44 41 32 42
70% 27 65 21 Breakout 45 48 53 53 41 37 32 21 35
50% 21 34 14 Breakout 44 44 52 46 36 33 26 12 30
33% 15 19 10 Breakout 44 39 44 41 35 31 23 4 25
AQH240-B &
AQH240E-B
99% 39 96 52 Breakout 48 54 56 60 54 44 41 33 42
70% 27 65 21 Breakout * 49 53 53 41 37 33 20 35
50% 21 34 14 Breakout * 42 51 45 36 34 26 10 29
33% 15 19 10 Breakout * * 48 39 33 32 20 2 25

*Noise not normally heard by the human ear. Click here for more data

The inclusion of rectangular socket connections in the unit not only removes the need for flexible duct connectors, but further reduces the likelihood of invasive noise through improved system performance.

Domus Attenuation Solutions

For even further acoustic attenuation within the duct system itself, look to install Domus rigid duct sound attenuators, which lower sound noise by up to 55dB, in addition to Domus Thermal duct insulation; designed specifically to improve the thermal insulation of rigid ducting.

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View range

HRX-aQ ceiling range

200mm deep models

240mm deep models

With Bypass

Without Bypass

With Bypass

Without Bypass

With Total Heat Recovery Exchanger - With Total Heat Recovery Exchanger - With Total Heat Recovery Exchanger - With Total Heat Recovery Exchanger -
Why is this unit different? Why is this unit different? Why is this unit different? Why is this unit different? Why is this unit different? Why is this unit different? Why is this unit different? Why is this unit different?

No condensate drain required

Improved, balanced humidity level

Wireless control for improved usability and easier installation

100% bypass aids summer cooling

5 year parts and 2 year labour warranty

100% bypass aids summer cooling

Cost effective

No condensate drain required

Improved, balanced humidity level

Wireless control for improved usability and easier installation

5 year parts and 2 year labour warranty

Extremely cost effective

No condensate drain required

Improved, balanced humidity level

Wireless control for improved usability and easier installation

100% bypass aids summer cooling

5 year parts and 2 year labour warranty

100% bypass aids summer cooling

Cost effective

No condensate drain required

Improved, balanced humidity level

Wireless control for improved usability and easier installation

5 year parts and 2 year labour warranty

Extremely cost effective