Vent-Axia Sentinel Kinetic Plus, Plus B & High Flow Compatible Replacement Filter Set - G3
403702
£18.25
MVHR unit guide
Vent-Axia Sentinel Kinetic High Flow: specifications, filters & guide
MVHRVent-Axia
The Vent-Axia Sentinel Kinetic High Flow is a wall-mounted MVHR unit for larger homes and multiple-occupancy buildings, with a maximum flow rate of 666 m³/h.
- Summer bypass
- Evening and night-time purge
- Integral humidity sensor
- Folding quick-change filter
- Flexible spigot positions
About the Vent-Axia Sentinel Kinetic High Flow
The Sentinel Kinetic High Flow is a wall-mounted mechanical ventilation with heat recovery (MVHR) unit made by Vent-Axia and part of the Lo-Carbon Sentinel Kinetic range. It runs continuously, drawing stale, moist air from wet rooms and kitchens and passing it through a counterflow heat exchanger that transfers heat to the fresh air supplied to living areas and bedrooms. It is designed for larger homes and multiple-occupancy buildings such as care homes and student accommodation. The ErP product fiche gives a thermal efficiency of 90% and an energy class of SEC A.
The High Flow has a summer bypass, a damper that sends outdoor air around the heat exchanger when the house is warmer than the indoor temperature set on the controller and the air outside is cooler, and an integral humidity sensor that raises fan speed in proportion to relative humidity. It is made as a right-hand unit (408449) and a left-hand unit (408451), each also available with an acoustic enclosure, an acoustic top box or both. The casing is 630 mm high and 775 mm wide, weighs 38 kg and has 180 mm duct spigots, which can be repositioned to give vertical, horizontal or combined connections, with a 200 mm option.
Fan speeds are set at commissioning, with factory defaults of 20% (low), 30% (normal), 50% (boost) and 100% (purge) of maximum flow. Boost can come from the front button, a wireless switch, a light switch, a sensor or a 0-10 V input, and the integrated digital controller offers BMS connectivity, volt-free inputs and an adjustable delay-on timer. Backward-curved impellers on EC/DC motors keep energy use down. Once commissioned, the unit should need no day-to-day intervention.
Two removable filters sit behind hinged flap panels on the casing and protect the heat recovery cell. The filter folds as it is withdrawn, which suits installations in cupboards where access is limited. They are ISO 45% Coarse (G3) as standard, 185 x 510 mm, and an ISO ePM10 50% (M5) grade is the optional finer alternative. The control unit shows a Check filters reminder at the interval set during commissioning, because filters that become too dirty restrict airflow or let dirt pass through to the heat exchanger. Part numbers, the filter change procedure, maintenance intervals and fault codes are set out below.
Key specs
- Max. flow rate (ErP product fiche)
- 666.00 m³/h
- Thermal efficiency (ErP product fiche)
- 90.00%
- Specific power input, SPI
- 0.42 W/(m³/h)
- Reference flow rate at 50 Pa
- 0.12950 m³/s
- Default airflow settings
- Low 20%, Normal 30%, Boost 50%, Purge 100% of maximum flow
- Ambient temperature limits for installation
- Not above 40 °C and not below -20 °C
- Operating humidity
- 0% to 95% RH
- Storage temperature
- -20 °C to +45 °C
- Height (excluding spigots)
- 630 mm
- Width (excluding spigots)
- 775 mm
- Depth
- 524 mm including filter flap hinge protrusion
- Weight
- 38 kg
- Maintenance access area
- 540 mm x 780 mm
- Supply
- 220-240 V AC, single phase, 50 Hz
- Max. power input at max. flow rate (ErP product fiche)
- 360.00 W
- Supply fuse
- 3 A, located in the fused spur
- Product fuse
- 2 A, on the main PCB
- IP rating
- IP22
- Spigot diameter
- 180 mm, with a 200 mm option
- Condensate pipe diameter
- 22 mm
- Standard filters
- 2 x ISO 45% Coarse (G3), part no. 403702 (pack of 2)
- Optional finer filter
- ISO ePM10 50% Pollen (M5), part no. 444201 (single)
- Filter size
- 185 x 510 mm
- Control unit
- LCD display with four buttons
- Summer bypass and integral humidity sensor
- Fitted
- Sound power level LWA (ErP product fiche)
- 61.03 dB
- Sound data test standard
- BS EN 13141-7:2010
- Energy class
- SEC class A
- Regulations and listings
- Recognised in SAP PCDB
Replacement filters for the Vent-Axia Sentinel Kinetic High Flow
Vent-Axia Sentinel Kinetic Plus, Plus B & High Flow Compatible Replacement Filter Set - G4
£20.00
Vent-Axia Sentinel Kinetic Plus, Plus B & High Flow Compatible Replacement Filter Set - M5
444201
£23.50
How to change the filters
- Wait for the Check filters message
The display shows Check filters at the interval set at commissioning. The filters are reached through the flap panels on the casing. Do not remove the unit's covers: mains voltage is present inside, and the unit must be switched off at the mains before any cover is removed.
- Open the filter flaps
Open the filter flaps and take out both filters. The filter folds as it is withdrawn.
- Clean or fit new filters
For a routine check, clean the filters gently by tapping them or by carefully using a vacuum cleaner. At a scheduled change, fit two replacement filters of 185 x 510 mm.
- Close the filter flaps
Close both filter flaps.
- Reset the reminder
Press and hold the up and down buttons on the control unit together for 5 seconds to clear the automatic message.
- Record the next change date
Note the date of the next required filter change on the filter check record provided with the unit.
Manuals & downloads
Other MVHR units
MVHRVent-Axia Sentinel Kinetic F and FH Specs, Manual, Fault Codes & Filters
MVHRVent-Axia Sentinel Kinetic Plus B Specs, Manual, Fault Codes & Filters
MVHRVent-Axia Sentinel Kinetic V, B and BH Specs, Manual, Fault Codes & Filters
MVHRVectaire WHHR-Midi-BY, Midi-BY-LCD, Midi-BY-AT-LCD Specs, Manual, Fault Codes & FiltersVent-Axia and all other manufacturer and product names, model numbers and part numbers on this page are the property of their respective owners and are used for identification only. MVHR.shop is an independent supplier of compatible filters. We are not affiliated with, endorsed by, sponsored by or approved by Vent-Axia or any other manufacturer named on this page.
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Specifications
Performance
- Max. flow rate (ErP product fiche)
- 666.00 m³/h
- Thermal efficiency (ErP product fiche)
- 90.00%
- Specific power input, SPI
- 0.42 W/(m³/h)
- Reference flow rate at 50 Pa
- 0.12950 m³/s
- Default airflow settings
- Low 20%, Normal 30%, Boost 50%, Purge 100% of maximum flow
- Ambient temperature limits for installation
- Not above 40 °C and not below -20 °C
- Operating humidity
- 0% to 95% RH
- Storage temperature
- -20 °C to +45 °C
Dimensions & weight
- Height (excluding spigots)
- 630 mm
- Width (excluding spigots)
- 775 mm
- Depth
- 524 mm including filter flap hinge protrusion
- Weight
- 38 kg
- Maintenance access area
- 540 mm x 780 mm
Electrical
- Supply
- 220-240 V AC, single phase, 50 Hz
- Max. power input at max. flow rate (ErP product fiche)
- 360.00 W
- Supply fuse
- 3 A, located in the fused spur
- Product fuse
- 2 A, on the main PCB
- IP rating
- IP22
Connections & ducting
- Spigot diameter
- 180 mm, with a 200 mm option
- Condensate pipe diameter
- 22 mm
Filters
- Standard filters
- 2 x ISO 45% Coarse (G3), part no. 403702 (pack of 2)
- Optional finer filter
- ISO ePM10 50% Pollen (M5), part no. 444201 (single)
- Filter size
- 185 x 510 mm
Controls & features
- Control unit
- LCD display with four buttons
- Summer bypass and integral humidity sensor
- Fitted
Acoustics
- Sound power level LWA (ErP product fiche)
- 61.03 dB
- Sound data test standard
- BS EN 13141-7:2010
Approvals & compliance
- Energy class
- SEC class A
- Regulations and listings
- Recognised in SAP PCDB
Model variants
- Sentinel Kinetic High Flow Right 408449
Right-handed, with summer bypass and integral humidity sensor. - Sentinel Kinetic High Flow Left 408451
Left-handed, with summer bypass and integral humidity sensor. - Kinetic High Flow Right with Acoustic Enclosure 479542
Right-hand unit with the acoustic enclosure for reduced breakout noise. - Kinetic High Flow Right with Acoustic Top Box 479543
Right-hand unit with the acoustic top box for reduced in-duct noise. - Kinetic High Flow Right with Acoustic Top Box & Enclosure 479544
Right-hand unit with both the acoustic top box and enclosure. - Kinetic High Flow Left with Acoustic Enclosure 479545
Left-hand unit with the acoustic enclosure. - Kinetic High Flow Left with Acoustic Top Box 479546
Left-hand unit with the acoustic top box. - Kinetic High Flow Left with Acoustic Top Box & Enclosure 479547
Left-hand unit with both the acoustic top box and enclosure.
Vent-Axia Sentinel Kinetic High Flow part numbers
Unit models
| Part no. | Description |
|---|---|
408449 | Sentinel Kinetic High Flow Right, right-handed with summer bypass and integral humidity sensor |
408451 | Sentinel Kinetic High Flow Left, left-handed with summer bypass and integral humidity sensor |
479542 | Kinetic High Flow Right with Acoustic Enclosure |
479543 | Kinetic High Flow Right with Acoustic Top Box |
479544 | Kinetic High Flow Right with Acoustic Top Box & Enclosure |
479545 | Kinetic High Flow Left with Acoustic Enclosure |
479546 | Kinetic High Flow Left with Acoustic Top Box |
479547 | Kinetic High Flow Left with Acoustic Top Box & Enclosure |
Filters
| Part no. | Description | Notes |
|---|---|---|
403702 | ISO 45% Coarse (G3) filters, pack of 2, for Kinetic High Flow | Grade G3; pack of 2; 185 x 510 mm |
444201 | ISO ePM10 50% Pollen (M5) filter, single, for Kinetic High Flow | Grade M5; supplied singly; 185 x 510 mm |
Controls & sensors
| Part no. | Description | Notes |
|---|---|---|
443283 | Wired Remote Controller | 15 m of cable supplied |
441838 | Plug-in integral humidity sensor | |
441865 | Wireless enable kit | Wireless receiver and one wireless switch |
437827 | Additional wireless switch | Up to four can be connected |
441780 | Vent-Wise accessory pack | Requires sensors |
448356 | LED alarm with 15 m cable | |
447340 | Opto-Coupler | Gives a volt-free BMS connection |
442030 | Isolator relay controller | |
449060 | Normal Boost Switch with Light Indicator | Single gang, 85 x 85 x 10 mm (H x W x D) |
437320 | Normal Boost Switch, stainless steel | Single gang, brushed stainless steel, 90 x 90 x 18 mm (H x W x D) |
455213 | Normal Boost Switch | Single gang, 85 x 85 x 10 mm (H x W x D) |
448929 | Momentary Push Switch | Boosts the unit for 30 minutes; 85 x 85 x 10 mm (H x W x D) |
563550 | Ambient Response Humidity Sensor | 30%-90% RH operating range; 220-240 V AC |
563532 | Ecotronic Humidity Sensor | Adjustable set point; 220-240 V supply |
563506 | Air Quality Sensor | Surface mounted; 220-240 V supply |
459623 | Visonex PIR Sensor | Adjustable timer overrun 5-25 minutes; detection range up to 10 metres |
Accessories
| Part no. | Description |
|---|---|
409761 | Spigot Adaptor Kit 200 mm (High Flow) |
68MP033G | Anti Vibration Mounts |
477988 | Acoustic Purge Fan |
479829 | Acoustic Purge Fan XL |
Spares
| Part no. | Description | Notes |
|---|---|---|
441768 | Main Power Board | |
441767 | Control Panel | |
443430 | Temperature sensor | |
443431 | Temperature sensor | |
443352 | Heat Recovery Cell | Listed for Sentinel Kinetic High Flow |
409776 | Supply Motor | Listed for Sentinel Kinetic High Flow |
409778 | Extract Motor | Listed for Sentinel Kinetic High Flow |
443355 | Summer Bypass | Listed for Sentinel Kinetic High Flow |
446523 | Spigot, 180 mm diameter, complete with foam adaptor to make a 200 mm spigot | One per pack; listed for Sentinel Kinetic High Flow |
Maintenance schedule
| Task | How often |
|---|---|
| Check, clean or replace both filters In a new-build property the supply and extract filters should be checked at one-month intervals for the first six months. | When Check filters is displayed: 6 months urban, 9 months suburban, 12 months rural |
| Inspect and clean the unit and heat exchanger Isolate the mains supply, remove the front cover and both filters, slide out the heat exchanger and wash it and the outer cover in warm water with mild detergent, then dry thoroughly. Keep water away from all electrical components and wiring. | Every 12 months |
| Inspect the motors Look for dust or dirt on the impeller blades, which can cause imbalance and more noise. Vacuum or clean if necessary. | Every 12 months |
| Check the condensate drain Make sure the drain tube is secure and clear of debris; clean it if necessary. | Every 12 months |
| Check fastenings Check that the unit and wall-mount fastenings are tight and re-tighten any that have worked loose. | Every 12 months |
| Professional service The product should be professionally serviced every year. | Annually |
Performance & technical data
Ecodesign product fiche: Kinetic High Flow
| Parameter | Value |
|---|---|
| SEC class | A |
| SEC value ('Average') | -40.98 |
| SEC value ('Warm') | -15.72 |
| SEC value ('Cold') | -85.86 |
| Declared as | RVU/BVU |
| Speed drive | Variable speed |
| Type HRS | Recuperative |
| Thermal efficiency (%) | 90.00 |
| Max. flow rate (m³/h) | 666.00 |
| Max. power input at max. flow rate (W) | 360.00 |
| LWA: sound power level (dB) | 61.03 |
| Ref. flow rate (m³/s) | 0.12950 |
| Ref. pressure difference (Pa) | 50.00 |
| SPI [W/(m³/h)] | 0.42 |
| Control factor (CTRL) | 0.65 |
| Control typology | Local demand control |
| Max. internal and external leakage rates | <5% internal, <5% external |
| Annual electricity consumption, AEC (kWh/a) per 100 m² | 2.65 |
| Annual heating saved, AHS average (kWh/a) per 100 m² | 46.93 |
| Annual heating saved, AHS warm (kWh/a) per 100 m² | 21.22 |
| Annual heating saved, AHS cold (kWh/a) per 100 m² | 91.82 |
Commission Delegated Regulation (EU) No 1254/2014. Model IDs (stock refs) 408449 and 408451.
SAP PCDB performance: Kinetic High Flow
| Configuration | SAP 2009 thermal efficiency % | SAP 2009 SFP (W/l/s) | SAP 2012 thermal efficiency % | SAP 2012 SFP (W/l/s) |
|---|---|---|---|---|
| K+1 | 88 | 0.65 | 88 | 0.58 |
| K+2 | 88 | 0.54 | 90 | 0.55 |
| K+3 | 90 | 0.52 | 91 | 0.60 |
| K+4 | 90 | 0.55 | 91 | 0.69 |
| K+5 | 91 | 0.6 | 90 | 0.78 |
| K+6 | 91 | 0.66 | 90 | 0.92 |
| K+7 | 90 | 0.74 | 90 | 1.09 |
Sound data: Kinetic High Flow, unit only
| Flow % | Mode | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1 kHz | 2 kHz | 4 kHz | 8 kHz | LwA dB | SPL dB(A) at 3 m |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | Supply | 55.1 | 65.9 | 55.2 | 53.8 | 44.4 | 37.4 | 25.3 | 24.9 | 66.8 | 34.1 |
| 20 | Extract | 58.2 | 57.4 | 48.0 | 45.6 | 43.8 | 34.5 | 20.0 | 24.5 | 61.3 | 27.9 |
| 20 | Breakout | 43.3 | 46.6 | 44.9 | 44.7 | 41.8 | 30.4 | 21.6 | 22.5 | 51.6 | 25.1 |
| 40 | Supply | 63.1 | 69.0 | 67.1 | 64.0 | 55.0 | 51.6 | 39.7 | 32.4 | 64.2 | 43.7 |
| 40 | Extract | 58.6 | 58.4 | 60.0 | 53.7 | 41.9 | 41.5 | 31.7 | 25.1 | 54.9 | 34.3 |
| 40 | Breakout | 55.4 | 49.6 | 60.6 | 53.8 | 46.5 | 41.5 | 33.2 | 27.4 | 55.4 | 34.8 |
| 60 | Supply | 70.3 | 74.3 | 81.4 | 71.5 | 63.6 | 59.9 | 49.6 | 43.1 | 74.8 | 54.3 |
| 60 | Extract | 64.4 | 64.2 | 72.6 | 59.1 | 48.7 | 45.7 | 37.8 | 29.3 | 64.9 | 44.4 |
| 60 | Breakout | 62.8 | 54.6 | 65.7 | 57.2 | 55.5 | 49.2 | 41.4 | 36.4 | 61.0 | 40.5 |
| 80 | Supply | 75.3 | 77.9 | 88.1 | 78.7 | 68.4 | 65.1 | 56.0 | 50.1 | 81.4 | 60.9 |
| 80 | Extract | 71.1 | 68.2 | 73.6 | 61.8 | 51.9 | 49.5 | 42.7 | 37.6 | 66.4 | 45.9 |
| 80 | Breakout | 66.2 | 59.0 | 73.4 | 61.8 | 57.0 | 54.6 | 47.3 | 43.1 | 66.8 | 46.2 |
| 100 | Supply | 90.9 | 80.9 | 84.4 | 80.1 | 71.5 | 68.0 | 59.3 | 54.5 | 80.7 | 60.1 |
| 100 | Extract | 92.4 | 71.8 | 78.1 | 67.4 | 54.9 | 51.5 | 44.6 | 41.4 | 72.2 | 51.7 |
| 100 | Breakout | 69.3 | 62.9 | 74.9 | 67.5 | 59.2 | 56.6 | 49.1 | 44.7 | 69.3 | 48.8 |
Octave band values in dB SWL. Tested according to BS EN 13141-7:2010. Breakout quoted spherical. Supply and extract quoted hemispherical. Flow % is the percentage of maximum flow.
Sound data: Kinetic High Flow with acoustic enclosure
| Flow % | Mode | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1 kHz | 2 kHz | 4 kHz | 8 kHz | LwA dB | SPL dB(A) at 3 m |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | Supply | 55.2 | 57.0 | 46.1 | 38.8 | 24.0 | 15.4 | 18.0 | 23.2 | 43.6 | 26.1 |
| 20 | Extract | 50.4 | 53.6 | 37.0 | 32.3 | 18.2 | 15.1 | 18.0 | 23.2 | 38.7 | 21.2 |
| 20 | Breakout | 41.3 | 51.8 | 39.2 | 32.3 | 20.5 | 15.8 | 18.1 | 23.2 | 37.7 | 17.2 |
| 40 | Supply | 64.1 | 59.6 | 59.7 | 51.9 | 35.5 | 22.8 | 19.9 | 23.5 | 53.3 | 35.8 |
| 40 | Extract | 56.6 | 50.7 | 49.0 | 41.9 | 24.5 | 17.7 | 18.1 | 23.2 | 43.3 | 25.8 |
| 40 | Breakout | 46.7 | 50.5 | 53.0 | 44.8 | 32.2 | 22.2 | 18.5 | 23.3 | 45.6 | 25.1 |
| 60 | Supply | 67.3 | 64.0 | 67.7 | 58.6 | 43.2 | 30.6 | 26.5 | 25.9 | 61.0 | 43.5 |
| 60 | Extract | 61.6 | 56.7 | 55.5 | 49.0 | 32.2 | 25.3 | 19.7 | 23.4 | 50.2 | 32.7 |
| 60 | Breakout | 53.0 | 54.4 | 60.2 | 48.8 | 40.6 | 33.2 | 23.4 | 23.4 | 53.0 | 32.5 |
| 80 | Supply | 70.3 | 67.7 | 74.6 | 61.8 | 48.5 | 36.2 | 33.0 | 31.4 | 67.5 | 50.0 |
| 80 | Extract | 66.7 | 60.0 | 67.2 | 50.9 | 38.1 | 32.8 | 24.0 | 24.1 | 59.7 | 42.2 |
| 80 | Breakout | 58.0 | 58.0 | 64.7 | 52.4 | 45.7 | 39.9 | 31.2 | 24.3 | 58.7 | 38.2 |
| 100 | Supply | 73.0 | 70.1 | 77.1 | 65.1 | 51.4 | 39.5 | 37.0 | 36.4 | 70.1 | 52.6 |
| 100 | Extract | 69.6 | 62.5 | 67.3 | 56.2 | 41.7 | 37.0 | 28.1 | 25.3 | 60.5 | 43.0 |
| 100 | Breakout | 61.0 | 61.2 | 65.9 | 57.7 | 48.5 | 43.8 | 36.3 | 26.3 | 60.7 | 40.2 |
Octave band values in dB SWL. Tested according to BS EN 13141-7:2010. Breakout quoted spherical. Supply and extract quoted hemispherical. Flow % is the percentage of maximum flow.
Spare filters: Kinetic High Flow
| Model | Filter part no. | Grade |
|---|---|---|
| Kinetic High Flow | 403702 (PK2) | G3 |
| Kinetic High Flow | 444201 (Single) | M5 |
Filter size 185 x 510 mm.
Accessories & controls
Wired Remote Controller
- Part no. 443283
- Duplicates the features of the on-board control panel
- Supplied with 15 m of cable (maximum length)
- Flush mounting, suits a single-gang pattress box 16 mm deep
Plug-in integral humidity sensor
- Part no. 441838
- Plug-in sensor for the Sentinel Kinetic range
Wireless enable kit and additional wireless switch
- Part no. 441865 (receiver and one wireless switch)
- Part no. 437827 (additional switch, up to four may be connected)
Vent-Wise accessory pack
- Part no. 441780
- Requires sensors
LED alarm with 15 m cable
- Part no. 448356
- Remote LED that lights when any message is visible on the unit's display
Opto-Coupler
- Part no. 447340
- Converts the basic 5 V BMS output to volt-free
Isolator relay controller
- Part no. 442030
- Isolates the fan unit from other mains circuits when used with trickle/boost or light switch control
Boost switches
- Part nos. 449060 (with light indicator), 437320 (stainless steel), 455213 (standard)
- Single-gang wall switches that select normal or boost
- Part no. 448929: momentary push switch that boosts the unit for 30 minutes
Humidity and air quality sensors
- Part no. 563550: ambient response humidity sensor, 30%-90% RH
- Part no. 563532: Ecotronic humidity sensor, adjustable set point
- Part no. 563506: air quality sensor, surface mounted
Visonex PIR sensor
- Part no. 459623
- Fits a UK single-gang box
- Timer overrun adjustable from 5 to 25 minutes
- Detection range up to 10 metres
Spigot Adaptor Kit 200 mm
- Part no. 409761
- Listed for the High Flow
- Adapts the 180 mm spigot to 200 mm
Anti vibration mounts
Part no. 68MP033G
Acoustic purge fans
- Part no. 477988: Acoustic Purge Fan
- Part no. 479829: Acoustic Purge Fan XL
Troubleshooting
Fault code 01: supply fan not running
Likely cause: Supply fan not running
What to do: Note the code and contact the service provider, quoting it. Do not remove the unit's covers.
Fault code 02: extract fan not running
Likely cause: Extract fan not running
What to do: Note the code and contact the service provider, quoting it. Do not remove the unit's covers.
Fault code 04: control PCB 24 V fuse (FS1) failure
Likely cause: Control PCB 24 V fuse (FS1) failure
What to do: Note the code and contact the service provider, quoting it. Do not remove the unit's covers.
Fault code 08: temperature sensor fault
Likely cause: Temperature sensor fault
What to do: Note the code and contact the service provider, quoting it. Do not remove the unit's covers.
Fault code 16: temperature sensor fault
Likely cause: Temperature sensor fault
What to do: Note the code and contact the service provider, quoting it. Do not remove the unit's covers.
Fault code 32: wired remote control failure
Likely cause: Wired remote control failure
What to do: Note the code and contact the service provider, quoting it. Do not remove the unit's covers.
More than one fault code at once
Likely cause: Code numbers are added together when more than one fault is detected
What to do: Quote the total code shown on the display to the service provider.
Service Phone and Fault Code screens alternate on the display
Likely cause: A fault has caused the unit to switch off
What to do: Phone the service number shown on the display for assistance and quote the fault code.
Room Too Cold, Fan Off
Likely cause: The heating has failed or been switched off and the internal temperature has fallen below 5 °C, so the unit has stopped to avoid bringing cold air into the house
What to do: The unit restarts every hour for a short run to measure the temperature, and returns to normal operation once the property warms up, for example when the heating is back on.
BMS Mode, Fan Off
Likely cause: A Fan Off command has been received from a building management system, for example in the event of a fire alarm
What to do: The command is issued by the building management system, not by the unit.
Defrost Active, Airflow Mode
Likely cause: Supply air temperature is between 0 °C and -20 °C, so antifrost operation has started to prevent frost forming on the heat exchanger
What to do: Antifrost operation is automatic. On bypass models it can be set to Airflow Mode (default) or Bypass Mode if negative pressure is not permitted during antifrost operation.
Check filters displayed
Likely cause: The filter check interval set at commissioning has elapsed
What to do: Inspect, clean or replace both filters, then hold the up and down buttons for 5 seconds to clear the message.
At a glance
- Unit type
- MVHR
- Manufacturer
- Vent-Axia
- Product range
- Lo-Carbon Sentinel Kinetic MVHR range
- Versions
- High Flow with summer bypass and integral humidity sensor; acoustic enclosure and top box options
- Handing
- Right-hand (408449) and left-hand (408451)
- Mounting
- Wall-mounted, upright; ducting vertical, horizontal or both
- IP rating
- IP22
- Energy class
- SEC class A
- Manufacturer's guarantee
- 2 years from date of purchase, for products installed and used in the UK
- 666 m³/hMaximum flow rate (ErP product fiche)
- 90%Thermal efficiency (ErP product fiche)
- 360 WMaximum power input at maximum flow
- 61.03 dBSound power level LWA (ErP product fiche)
- G3, 185 x 510 mmStandard filters, 2 fitted (ISO 45% Coarse)
- 180 mmDuct spigot diameter, 200 mm option
Vent-Axia Sentinel Kinetic High Flow features
Summer bypass
When the house is warmer than the set indoor temperature (16-40 °C, default 25 °C) and the outside air is cooler, a damper lets outdoor air skip the heat exchanger. It only works while the outdoor temperature is above 14 °C (adjustable), and it contributes to cooling rather than replacing it.
Evening and night-time purge
The bypass models can run at boost speed through the evening, stopping after at most 5 hours, or through the night, to flush warm air from the house while outdoor conditions allow.
Integral humidity sensor
Fan speed rises in step with relative humidity, and the sensor also reacts to small but rapid rises, so even a small wet room is cleared without the whole system running at boost. A night-time setback reduces nuisance tripping as humidity creeps up with falling temperature.
Folding quick-change filter
The filter folds as it is withdrawn, so it can be removed through the hinged flaps even in a cupboard with restricted access.
Flexible spigot positions
The 180 mm or 200 mm spigots can be repositioned to give a horizontal connection or a mix of vertical and horizontal connections, which suits space-saving installations.
Acoustic enclosure and top box options
An optional acoustic enclosure reduces breakout noise and an optional acoustic top box reduces in-duct noise at key frequencies. Sound data is published for the unit alone and for the unit with the enclosure.
Frost protection
With supply air between 0 °C and -20 °C the unit cuts the supply airflow and raises the extract rate to stop ice forming on the heat exchanger. At -20 °C or below the supply fan stops and the extract fan runs at a reduced rate.
Boost and purge
Pressing the front boost button once, twice or three times gives 30 minutes, 60 minutes or continuous boost, and holding it for 5 seconds starts a 2-hour purge at 100% fan speed.
BMS connectivity and multiple control inputs
The unit offers BMS status and fault reporting, volt-free inputs and light-switch inputs. Boost can also come from five pairs of switch terminals, a 0-10 V proportional input, a wireless switch or a wired remote controller.
Installing the Vent-Axia Sentinel Kinetic High Flow
Mount the unit on a wall, always upright, with duct connections leaving vertically, horizontally or both. Fix the supplied metal bracket to a wall that can carry the 38 kg unit, fit the stand-off feet from the accessory bag, then hang the unit by locating its two steel wall bushes on the bracket. Keep a maintenance access area of 540 mm x 780 mm clear in front of the unit, and do not use the unit to support other equipment. In an unheated space, insulate the unit and its ducting.
The condensate pipe is fixed with a worm-drive clip to a 22 mm vertical pipe and must connect to the building's foul water drainage through a U-bend trap with at least a 60 mm water seal (or a HepVo valve), falling at least 3 degrees. Insulate the pipe if it runs through a cold void.
- Do not install the unit where the atmosphere is excessively oily or greasy, where corrosive or flammable gases, liquids or vapours may be present, where it may be sprayed with water from hoses, or where ambient temperature may exceed 40 °C or fall below -20 °C.
- Intake air must come from outside the property, and the unit must not be connected directly to a tumble drier.
- Open the supply and exhaust valves fully before commissioning, and allow at least 5 minutes for the unit to stabilise when changing between boost and normal speeds.
- Installation and the electrical connection must be carried out by suitably trained and qualified persons, with a local double-pole fused spur (3 A fuse, at least 3 mm contact separation) to isolate the supply. Switch the unit off at the mains before any cover is removed.
- Follow the manufacturer's full installation, operation and maintenance instructions for wiring diagrams and commissioning settings.
