Vent-Axia Sentinel Kinetic Plus, Plus B & High Flow Compatible Replacement Filter Set - G3
403702
£18.25
MVHR unit guide
Vent-Axia Sentinel Kinetic Plus B: specifications, filters & guide
MVHRVent-Axia
The Vent-Axia Sentinel Kinetic Plus B is a wall-mounted MVHR unit with a summer bypass and integral humidity sensor, rated SEC class A+.
- Summer bypass
- Evening and night-time purge
- Integral humidity sensor
- Hinged filter access
- Acoustic enclosure and top box options
About the Vent-Axia Sentinel Kinetic Plus B
The Sentinel Kinetic Plus B is a wall-mounted mechanical ventilation with heat recovery (MVHR) unit made by Vent-Axia. It runs continuously, drawing stale, moist air from bathrooms, toilets and kitchens and passing it through a heat exchanger that transfers heat to the fresh air supplied to bedrooms and living areas. It is intended for houses and similar dwellings under the 2010 edition of Approved Document F. The ErP product fiche gives a thermal efficiency of 90% and an energy class of SEC A+.
The Plus B 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 as relative humidity rises. It is made as a right-hand unit (443028) and a left-hand unit (443028L). The casing is 630 mm high, 775 mm wide and 524 mm deep including the protrusion of the filter flap hinge, weighs 24 kg and has 150 mm duct spigots, with 180 mm and 200 mm options.
Ducting can leave the unit vertically, horizontally or both. 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. An acoustic enclosure for reduced breakout noise and an acoustic top box for reduced in-duct noise are available as options. 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. 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)
- 432.00 m³/h
- Max. airflow at 100 Pa
- 117 l/s (421.2 m³/h)
- Thermal efficiency (ErP product fiche)
- 90.00%
- Specific power input, SPI
- 0.20 W/(m³/h)
- 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
- 24 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)
- 173.00 W
- Supply fuse
- 3 A, located in the fused spur
- Product fuse
- 2 A, on the main PCB
- IP rating
- IP22
- Spigot diameter
- 150 mm, with 180 mm and 200 mm options
- 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)
- 52.23 dB
- Sound level at 3 m, normal / boost
- 24 dB(A) / 34 dB(A)
- Energy class
- SEC class A+
- Regulations and listings
- Building Regulations ADF and ADL compliant; recognised in SAP PCDB
Replacement filters for the Vent-Axia Sentinel Kinetic Plus B
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.
- 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
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Specifications
Performance
- Max. flow rate (ErP product fiche)
- 432.00 m³/h
- Max. airflow at 100 Pa
- 117 l/s (421.2 m³/h)
- Thermal efficiency (ErP product fiche)
- 90.00%
- Specific power input, SPI
- 0.20 W/(m³/h)
- 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
- 24 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)
- 173.00 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
- 150 mm, with 180 mm and 200 mm options
- 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)
- 52.23 dB
- Sound level at 3 m, normal / boost
- 24 dB(A) / 34 dB(A)
Approvals & compliance
- Energy class
- SEC class A+
- Regulations and listings
- Building Regulations ADF and ADL compliant; recognised in SAP PCDB
Model variants
- Sentinel Kinetic Plus B Right 443028
Right-handed, with summer bypass and integral humidity sensor. - Sentinel Kinetic Plus B Left 443028L
Left-handed, with summer bypass and integral humidity sensor.
Vent-Axia Sentinel Kinetic Plus B part numbers
Unit models
| Part no. | Description |
|---|---|
443028 | Sentinel Kinetic Plus B Right, right-handed with summer bypass and integral humidity sensor |
443028L | Sentinel Kinetic Plus B Left, left-handed with summer bypass and integral humidity sensor |
Filters
| Part no. | Description | Notes |
|---|---|---|
403702 | ISO 45% Coarse (G3) filters, pack of 2, for Kinetic Plus | Grade G3; pack of 2; 185 x 510 mm |
444201 | ISO ePM10 50% Pollen (M5) filter, single, for Kinetic Plus | 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 |
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 Plus |
443353 | Supply Motor | Listed for Sentinel Kinetic Plus |
443354 | Extract Motor | Listed for Sentinel Kinetic Plus |
443355 | Summer Bypass | Listed for Sentinel Kinetic Plus |
444057 | Spigot, 150 mm diameter | One per pack; listed for Sentinel Kinetic Plus |
446523 | Spigot, 180 mm diameter, complete with foam adaptor to make a 200 mm spigot | One per pack; listed for Sentinel Kinetic Plus |
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 Plus B
| Parameter | Value |
|---|---|
| SEC class | A+ |
| SEC value ('Average') | -43.81 |
| SEC value ('Warm') | -18.55 |
| SEC value ('Cold') | -88.70 |
| Declared as | RVU/BVU |
| Speed drive | Variable speed |
| Type HRS | Recuperative |
| Thermal efficiency (%) | 90.00 |
| Max. flow rate (m³/h) | 432.00 |
| Max. power input at max. flow rate (W) | 173.00 |
| LWA: sound power level (dB) | 52.23 |
| Ref. flow rate (m³/s) | 0.08400 |
| Ref. pressure difference (Pa) | 50.00 |
| SPI [W/(m³/h)] | 0.20 |
| 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 | 1.52 |
| 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) 443028 and 443028L.
SAP PCDB performance: Kinetic Plus
| Configuration | Thermal efficiency % | SFP (W/l/s) |
|---|---|---|
| K+1 | 91 | 0.51 |
| K+2 | 91 | 0.40 |
| K+3 | 90 | 0.41 |
| K+4 | 90 | 0.45 |
| K+5 | 90 | 0.53 |
| K+6 | 90 | 0.60 |
| K+7 | 90 | 0.70 |
Spare filters: Kinetic Plus
| Model | Filter part no. | Grade |
|---|---|---|
| Kinetic Plus | 403702 (PK2) | G3 |
| Kinetic Plus | 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
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
- Plus B: summer bypass and integral humidity sensor
- Handing
- Right-hand (443028) and left-hand (443028L)
- 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
- 432 m³/hMaximum flow rate (ErP product fiche)
- 90%Thermal efficiency (ErP product fiche)
- 173 WMaximum power input at maximum flow
- 52.23 dBSound power level LWA
- G3, 185 x 510 mmStandard filters, 2 fitted (ISO 45% Coarse)
- 150 mmDuct spigot diameter
Vent-Axia Sentinel Kinetic Plus B 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 a steamy bathroom or kitchen is cleared without the whole system running at boost. A night-time setback reduces nuisance tripping as humidity creeps up with falling temperature.
Hinged filter access
The filters are reached through hinged flap panels without removing the unit's covers, so a routine check or change is a quick job.
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.
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.
Multiple control inputs
Boost can be triggered from a 240 V switched live, five pairs of switch terminals, a 0-10 V proportional input, a wireless switch or a wired remote controller. A building management system can also command the fans off.
Filter reminder
The display shows Check filters at the interval set at commissioning, and the reminder is cleared from the control buttons once the filters have been dealt with.
Installing the Vent-Axia Sentinel Kinetic Plus B
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 24 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.
