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Installation and Operating Instructions Xcell 400 QV Xcell 400 QVW Xcell 400 QVI Mechanical Ventilation Unit with Heat Recovery Please ensure these instructions are kept safe and accessible at all times.
5.8.2 Left hand installation ..........................11 Technical Data ........................... 12 Air flow settings (Xcell 400 QV model only) ..................... 12 Air flow settings (Xcell 400 QVW model only) ..................12 6.2.1 PCB port pins (Xcell 400 QVW model only) ....................12 Air flow settings (Xcell 400 QVI model only) ....................
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8.5.6 Control panel – real-time timer menu (optional) ..................32 Sensor (Xcell 400 QVI model only)..................... 32 Humidity sensor (Xcell 400 QVI model only) .................... 33 Filter monitoring (Xcell 400 QVI model only) ................... 33 Automatic defrost protection for the MVHR (Xcell 400 QVW model only) ..........33 8.10 Automatic defrost protection for the MVHR (Xcell 400 QVI model only) ..........
1 General Information Read all these instructions & warnings fully before commencing installation. These installation and operating instructions must be observed during installation, operation, service and maintenance. This MVHR should only be installed and repaired by a qualified service technician. Improper repairs may expose the user to considerable danger.
Connecting extractor hoods in the ventilation system Servicing of the MVHR may only be carried out by a qualified service technician. Contact details for authorised servicing by Xpelair approved technicians can be found on the back of this booklet. 4 Application and Planning 4.1 Application...
4.3 MVHR installation planning MVHR system designs must comply with the current standards or the approved edition on the original planning consent. Approved documents for Building Regulation in England and Wales are as follows: Part B: Approved Document B (Fire Safety) - Volume 1: Dwelling houses. Approved Document B (Fire Safety) - Volume 2: Buildings other than dwelling houses.
5.2 Impact noise reduction With installation on wooden floors or other vibration-prone components, there may be a combined impact noise (use rubber mounting feet). 5.3 Wall mounting the MVHR There is a metal bracket fixed to the rear of the metal casing for mounting the MVHR on the wall. The corresponding metal wall bracket, which is to be fixed to the wall, is supplied (without fixing screws) in the product packaging.
The Xcell 400 MVHRs are manufactured for either a right or left-handed installation and therefore cannot be changed on-site. Right-handed MVHRs are available as follows: Xcell 400 QV Xcell 400 QVW Xcell 400 QVI Left-handed MVHRs are available as follows:...
5.6 Condensate drain A condensate drain must be fitted to run to the building waste water system in accordance with the Building Regulation H1. The Condensate Drain Tube is connected to the MVHR through the hole on the underside of the plastic base (fit the end of Drain Tube with the non-slip tape around it onto the MVHR).
6 Technical Data 6.1 Air flow settings (Xcell 400 QV model only) Air flow rates can be changed by a qualified service technician using the adjustment potentiometers inside the Manual 2-Speed Switch purchased for this MVHR, as shown in the picture below.
Speed 2: 240 m³/h - Normal daytime operation Speed 3: 400 m³/h - Boost setting for increased air exchange Note: When the MVHR is being used with a Manual 2-Speed Switch (Xcell 400 QV model only); only speeds 2 and 3 will apply. 6.5 Technical data...
G4 Filters - 2 Pack (All Xcell 400 models) 44313SK Summer Bypass Filter (Xcell 400 QVI only) 44314SK Heat Exchanger (All Xcell 400 models) 44315SK Note: Contact details for the Xpelair Sales Department can be found on the back of this booklet.
7.6 MVHR automatic control – connection PCB (Xcell 400 QVI model only) German translations from the PCB: Rauchmelder – Smoke Detector Feuchtesensor – Humidity Sensor Sensor – CO Sensor Eingänge 24V – 24V DC Inputs EIN – Input Ausgänge 24V – 24V DC Outputs AUS –...
7.7 CO sensor (Xcell 400 QVI model only) German translations from the PCB: Rauchmelder – Smoke Detector Feuchtesensor – Humidity Sensor Sensor – CO Sensor Eingänge 24V – 24V DC Inputs EIN – Input Ausgänge 24V – 24V DC Outputs AUS –...
7.8 Humidity sensor (Xcell 400 QVI model only) German translations from the PCB: Rauchmelder – Smoke Detector Feuchtesensor – Humidity Sensor Sensor – CO Sensor Eingänge 24V – 24V DC Inputs EIN – Input Ausgänge 24V – 24V DC Outputs AUS –...
7.9 7-day timer switch (Xcell 400 QVI model only) German translations from the PCB: Rauchmelder – Smoke Detector Feuchtesensor – Humidity Sensor Sensor – CO Sensor Eingänge 24V – 24V DC Inputs EIN – Input Ausgänge 24V – 24V DC Outputs AUS –...
7.10 Smoke alarm (Xcell 400 QVI model only) German translations from the PCB: Rauchmelder – Smoke Detector Feuchtesensor – Humidity Sensor Sensor – CO Sensor Eingänge 24V – 24V DC Inputs EIN – Input Ausgänge 24V – 24V DC Outputs AUS –...
7.11 RF Receiver (Xcell 400 QVI model only) Remove the cover plate on top of the MVHR to reveal two terminal blocks, pre-wired with white, blue and red cables. Connect the terminal blocks to the RF Receiver as shown in the wiring diagram below. Push the aerial of the RF Receiver through the grommet in the cover plate, place the RF Receiver inside the pocket provided and re-secure the cover plate with the screws provided.
Only one Manual 2-Speed Switch may be connected to each MVHR. Minimum size of 3-core cable to be used for switch connections: 0.5mm². This switch option is for manual control only and therefore none of the Xpelair automatic control accessories listed below are compatible with this switch.
8.2 Automatic 3-speed switch (Xcell 400 QVW model only) The terminal box for all wiring connections is situated on top of the MVHR. Refer to sections 7.2, 7.3, 7.4 and 7.5 for the relevant wiring diagrams and additional controllers that are compatible with the Automatic 3-Speed Switch. With jumper 8 selected on the PCB, the Automatic 3-Speed Switch is active.
8.3 CO sensor (Xcell 400 QVW model only) The terminal box for all wiring connections is situated on top of the MVHR. The CO Sensor will only function in conjunction with the Automatic 3-Speed Switch, described in section 8.2. Refer to sections 7.3 and 7.4 for the relevant wiring diagrams and associated controllers that are compatible with the CO Sensor.
8.5 Control panel (Xcell 400 QVI model only) 8.5.1 Control panel – normal operation The pictures below show the various modes of the MVHR, which are displayed on the Control Panel in normal operation. Normal Operation Normal Operation Speed 3 Esc.
8.5.3 Control panel – summer bypass temperature (settings menu) The sequence below describes how to modify the Summer Bypass temperatures within the „Settings Menu‟ on the Control Panel. The default factory setting is 24ºC. Settings Bypass +24 C Esc. Enter Follow the instructions above to display the Settings Menu on the Control Panel.
8.5.5 Control panel – operational dimensions menu The picture sequence below describes how to access the operational dimensions menu to check the air temperature readings for each of the four air paths, the Summer Bypass status and the total operating time. Operational dimensions Fresh air temp.
8.5.6 Control panel – real-time timer menu (optional) The picture sequence below describes how to access the „Real-time timer‟ menu to set up to three speed settings and time periods for each day of the week. Default real-time timer factory settings are not available. Customer menu Customer menu Customer menu...
8.7 Humidity sensor (Xcell 400 QVI model only) Refer to sections 7.6 and 7.8 for the relevant wiring diagrams. Minimum size of 3-core cable to be used for switch connections: 0.5mm². This product is designed to measure humidity and temperature in indoor applications. It uses a capacitive sensor element for the humidity measurement.
8.11 Automatic defrost protection for living areas (Xcell 400 QVI model only) Provides protection against freezing in case of a central heating failure. If activated, the display flashes GREEN and „Frost Protection Monitoring‟ is displayed. A temperature sensor is located on the exhaust air side of the MVHR, which monitors the exhaust air temperature. When the temperature drops below 8ºC the MVHR switches off automatically.
8.13 Smoke detector (Xcell 400 QVI model only) Refer to sections 7.6 and 7.10 for the relevant wiring diagrams. Up to four Smoke Detectors can be connected to each MVHR. Minimum size of 3-core cable to be used for switch connections: 0.5mm². When a Smoke Detector is used with the MVHR, the MVHR switches off immediately if smoke is detected.
8.15 Summer bypass (Xcell 400 QVI model only) Using a temperature sensor, the incoming and the exhaust air temperatures are monitored automatically. The factory default setting is 24°C. When the exhaust air temperature increases above 24°C and the incoming air temperature remains below 24°C, the Summer Bypass flap opens automatically, allowing cool outside air to flow directly into the living area.
The original external / exhaust air Filters contain G4 Filter fibre enclosed in a cardboard frame. Replacement G4 Filters are of a frameless construction. Contact details for purchasing new Filters or servicing by Xpelair approved technicians can be found on the back of this booklet. 9.1.1 Removing and re-fitting the heat exchanger filters Filter ‘clean side’...
The Heat Exchanger should be cleaned by a specialist technician as and when required depending on the level of contamination, but at least every 2 years. Contact details for servicing by Xpelair approved technicians can be found on the back of this booklet. The cleaning procedure is as follows: 1.
10 Malfunctions Important: Servicing of the MVHR may only be carried out by a qualified service technician. Contact details for servicing by Xpelair approved technicians can be found on the back of this booklet. 10.1 Fault locating table FAULT /...
10.2 Installation of replacement fans Should either Fan develop a fault and need to be replaced, contact details for servicing by Xpelair approved technicians can be found on the back of this booklet. The replacement procedure is as follows: 1. Disconnect the MVHR from the mains supply.
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b) Remove the Bell Mouth covering the faulty Fan. Note: Insert a flat bladed screwdriver into the recess on the edge of the Bell Mouth & lever it out carefully to avoid damaging the EPP housing. Removable Bell Mouth component c) Remove the three retaining screws of the faulty Fan.
10.3 Installation of a replacement control PCB 1. Disconnect the MVHR from the mains supply. 2. Remove the Access Hatch by turning it to the left. 3. Remove the metal Front Panel by removing the sixteen screws along its four edges. 4.