Vent-Axia Lo-Carbon Response Extractor Fan

Stock Reference Numbers

494143: Lo-Carbon Response 7 HTP

496738: Lo-Carbon Response 7 125 HTP

494144: Lo-Carbon Response 7 Pro HTP

496689: Lo-Carbon Response 7 Pro 125 HTP

494150: Lo-Carbon Response 7 SELV HTP

494149: Lo-Carbon Response 7 Pro SELV HTP

Power: 220-240V~50Hz

IP Ratings: IPX5, IPX7 (SELV)

PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH ILLUSTRATIONS. PLEASE SAVE THESE INSTRUCTIONS.

Important Safety and Guidance Notes

IMPORTANT: READ THESE INSTRUCTIONS BEFORE COMMENCING THE INSTALLATION

DO NOT install this product in areas where the following may be present or occur:

• Excessive oil or a grease laden atmosphere.
• Corrosive or flammable gases, liquids or vapours.
• Ambient temperatures higher than 40°C or less than –5°C.
• Possible obstructions which would hinder the access or removal of the Fan.

SAFETY AND GUIDANCE NOTES

1. All wiring to be in accordance with the current I.E.E. Regulations, or the appropriate standards of your country and MUST be installed by a suitably qualified person.
2. The Fan is suitable for installation within Zones 1 & 2.
3. The Fan should be provided with a local isolator switch capable of disconnecting all poles, having a contact separation of at least 3mm.
4. Ensure that the mains supply (Voltage, Frequency, and Phase) complies with the rating label.
5. The Fan should only be used in conjunction with the appropriate Vent-Axia products.
6. The fan should only be used in conjunction with fixed wiring.
7. When the Fan is used to remove air from a room containing a fuel-burning appliance, ensure that the air replacement is adequate for both the fan and the fuel-burning appliance.
8. The Fan should not be used where it is liable to be subject to direct water spray for prolonged periods of time.
9. Where ducted Fans are used to handle moisture-laden air, a condensation trap should be fitted. Horizontal ducts should be arranged to slope slightly downwards away from the Fan.
10. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
11. Young children should be supervised to ensure that they do not play with the appliance.

Product Description

The Response fan is a continuously running extract fan for kitchens, utility rooms, bathrooms, and toilets. It incorporates an airflow detection system that detects installation duct resistance and maintains the correct fan speed to achieve the preset extract flow rate (model dependent). The incorporated LED display allows the installer to configure the fan to suit its installation and is also used to show the day logger and power run meter. The fan can be wall, window (100mm only), or panel/ceiling mounted.

Accessories (Not Supplied)

• WALL FITTING KIT: Available in white (stock ref. 254102) and brown (stock ref. 254100) for 100mm wall kits, and white (stock ref. 455226) for 125mm wall kits. These are for installing into most walls using telescopic liners.
• WINDOW KIT: Stock ref. 407927 (100mm only).
• CEILING KIT: Stock ref. 407928 (100mm only).
• 150mm CONVERSION KIT: Stock ref. 408680 (100mm only).
• Decoration Frame: Stock ref. 474041 (100mm only).

Installation

Siting the Transformer (SELV Models Only)

1. The transformer must not be installed in a shower cubicle or enclosure. It must be sited away from direct sources of water spray and out of reach (1.5m) of a person using a fixed bath or shower.
2. Site away from direct sources of heat. Ambient temperature range 0°C to 40°C. Do not site in an area containing excessive levels of grease.
3. Decide where to site the transformer and fan and work out the required cable runs.

Panel/Ceiling/Interior Wall Mounting

1. Cut a 107mm diameter hole (for 100mm fans) or a 130mm hole (for 125mm fans).
2. Remove the front panel by carefully pulling it away from the fan. Loosen the two self-retaining screws and remove the inner grille by carefully pulling it away from the housing.
3. Using the built-in spirit level bubble as an aid, mark the screw centres through the holes in the fan back plate. Drill, plug, and screw into position. Attach ducting as required for the installation.
4. Wire the fan as described in Section B-Wiring. Adjust any settings as required (see Section C-Setup).
5. After installation, ensure the impeller rotates freely.
6. Replace the inner grille and tighten the retaining screws.
7. Replace the front panel.

Exterior Wall Mounting

1. For wall mounting, cut a 117mm diameter hole (for 100mm fans) or a 140mm hole (for 125mm fans) through the wall and insert the wall sleeve. Slope the sleeve slightly downwards away from the fan. Where necessary, cut to length and cement both ends into position flush with the wall faces.
2. Fix the exterior grille into position with the louvres positioned downwards.
3. Remove the front panel by carefully pulling it away from the fan. Loosen the two self-retaining screws and remove the inner grille by carefully pulling it away from the housing.
4. Using the built-in spirit level bubble as an aid, mark the screw centres through the holes in the fan back plate. Drill, plug, and screw into position.
5. Wire the fan as described in Section B-Wiring. Adjust any settings as required (see Section C-Setup).
6. After installation, ensure the impeller rotates freely.
7. Replace the inner grille and tighten the retaining screws.
8. Replace the front panel.

Window Mounting (100mm Only)

For window mounting, refer to the instructions provided with the kit.

Wiring

WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER SUPPLY DURING INSTALLATION OR MAINTENANCE.

IMPORTANT

• The cross-sectional area of supply cord used should be ranged from 0.75 - 1.5mm².
• Cable entry can be made from the rear or, on 100mm models, also the side of the fan using the grommet provided.
• The extraction fan or transformer (SELV models) is suitable for connection to a 220-240V 50Hz supply.
• The Transformer (SELV models only) MUST be surface mounted to allow air to freely circulate around the unit. When installed in a loft void, it MUST NOT be enclosed or covered with insulation.
• The fan is a Class II double insulated product and MUST NOT be earthed.

1. Select and follow the appropriate wiring diagram (Fig. 1, 2, 3, or 4, 5, 6).
2. Check all connections have been made correctly and ensure all terminal connections and supply wires are securely fastened (Fig. 7).
3. Ensure the impeller rotates and is free from obstructions.

Setup

Accessing the Commissioning Menu

To configure the fan, first remove the grille. With the grille removed, the control buttons are visible (Fig. 7). Do NOT isolate the fan from the power supply, as configuration requires power to the fan.

IMPORTANT: Do NOT attempt to remove the circuit board cover (Fig. 7). This covers the high voltage power supply, preventing the risk of an electric shock.

Display Modes

When first powered on, the display runs through an initialisation sequence and then activates prism mode (cover on). When a button is pressed, the display enters the menu system. The display returns to prism mode after 30 seconds of inactivity. Prism mode can be re-activated by holding the pull-cord for 5 seconds (if applicable).

Prism Mode

In 'prism mode', the display is mirrored for correct viewing through the fan cover's prism. When activated, prism mode runs for 15 minutes, showing the day logger then cycling through:

• Airflow rate (Pro models only, other models display speed setting).
• Estimated duct pressure (Pro models only if CV / F-2 mode enabled).
• Current RH% (HT models only).

Calibration runs after the first 15 minutes (if CV / F-2 mode enabled).

Menu Navigation

Pressing buttons switches the display from prism mode to direct view mode, activating the menu. If buttons are not pressed for 30 seconds, the display reverts to prism mode.

• The [UP] button increases a setting's value.
• The [DOWN] button reduces a setting's value.
• The [MODE/SET] button advances to the next menu item.

Menu Modes

• Standard: Press any button from normal runtime.
• Advanced/Engineer: Hold [UP] + [DOWN] for 5 seconds from the standard menu.
• Data-logger readout: Hold [MODE/SET] for 5 seconds from the standard menu.

Standard Settings

*If "0" is selected, the fan switches to Intermittent mode.

Advanced Settings

Settings: Speed Selection

Set trickle and boost speeds in l/s using the [UP] and [DOWN] buttons. To convert m³/h to l/s, divide m³/h by 3.6 (e.g., 54m³/h / 3.6 = 15 l/s). The Trickle Speed cannot be higher than the Boost selection.

Boost Time

The boost timer can be adjusted from 1-30 minutes; the default is 15 minutes. This option can also be disabled, removing it from the menu and setting the overrun to 0.

Inbuilt Ambient Response Humidistat with Rapid Rise Detection

The humidity threshold setting defines the relative humidity at which the fan triggers, adjustable from 40% to 90% rH. The fan increases speed slowly between trickle and boost speeds between the trigger %rH and +10%. The trigger point automatically adjusts if the temperature drops below 18°C to prevent nuisance triggering. The fan also has a rapid rise function to detect quick humidity increases when ambient %rH is below the threshold. If a rapid rise is detected, the fan increases speed proportionally between trickle and boost settings until humidity lowers.

Comfort Mode

• With comfort mode disabled, the fan boosts as soon as an [LS] (Light Switch) input is detected and over-runs for the set period after [LS] is disconnected.
• With comfort mode enabled, the fan remains off/in trickle up to a maximum of 20 minutes. Once [LS] is deactivated, the fan runs at boost mode for the duration [LS] was present, up to a maximum of 20 minutes plus the set over-run time. If [LS] was activated for less than 3 minutes, no boost occurs to prevent nuisance activations.

Fan Control Mode

There are 3 modes: Wall, Ducted, and Constant Airflow/Volume (CV) mode (CV - Pro models only). In Wall or Ducted mode, fan speeds are factory-set and do not use the airflow sensor. In CV mode, the fan automatically adjusts speed to maintain desired airflow. After the first 15 minutes of operation, the fan enters calibration mode to determine the most efficient mode of operation.

Calibration Reset

In some circumstances, it may be necessary to reset calibration settings (e.g., if the fan was covered). Reset by configuring for wall or duct mode (F-0 or F-1), turning the product off and on, and re-configuring to CV mode (F-2). The fan will calibrate after 15 minutes or by holding the pull-cord for 5 seconds.

Pullcord

• Switches the fan from trickle to boost (for boost overrun time). If overrun time is set to 0 (disabled), a default overrun of 5 minutes occurs.
• This overrides [LS] comfort mode, boosting the fan immediately.
• An activation when a Pullcord/[LS] boost is already active will cancel the overrun timer (RH boost sources remain unaffected).

Data Logger Menu

* When the display is rotated, the decimal point may not display (e.g., 055 represents 5.5KWh).

Cutting the power to the fan will not erase stored data. To reset data, hold pullcord for 14 seconds while in the data logger menu.

Data Examples

Example 1: Display shows total run time of 1 year and 237 days (text scrolls from right to left: "tot run 01y 237d").

Example 2: Display shows 34Wh of energy consumption in the previous 24 hours (text scrolls from right to left: "24h EnEr6Y 034").

A further 5-second press of the [MODE/SET] button returns the fan to the commissioning menu.

Servicing and Maintenance

WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER SUPPLY DURING MAINTENANCE.

1. At intervals appropriate to the installation, the fan should be inspected and cleaned to ensure there is no build-up of dirt or other deposits.
2. Wipe the inlets and front face with a damp cloth until clean.

The fan has sealed-for-life bearings, which do not require lubrication.

Diagrams

Wiring Diagrams

Fig.1: Shows continuous trickle with boost via pull cord. Includes 1 Phase Supply (220-240V 50Hz), Switched Spur, and Fan.

Fig.2: Shows continuous boost with no trickle facility. Includes 1 Phase Supply (220-240V 50Hz), Switched Spur, Link, and Fan.

Fig.3: Shows continuous trickle with boost facility. Includes 1 Phase 220-240 Volts 50 Hz Supply, Ceiling Junction, Pull Cord, Lamp, 3 POLE ISOLATOR SWITCH, and Fan.

Fig.4: Shows continuous trickle with pullcord boost for SELV models. Includes 1 Phase Supply (220-240V 50Hz), Fuse (3A), 12V D.C SELV Supply, Controller, and Fan.

Fig.5: Shows continuous boost with no trickle facility for SELV models. Includes 1 Phase Supply (220-240V 50Hz), Fuse (3A), Switched Fused Spur (3A), 12V D.C SELV Supply, Controller, and Fan.

Fig.6: Shows continuous trickle with boost facility via LS or internal pullcord for SELV models. Includes 1 Phase Supply (220-240V 50 Hz), Fuse, Ceiling Junction, 3 Pole Isolator Switch, Lamp, Pull Cord, 12V D.C SELV Supply, Controller, and Fan.

Installation Diagrams

Fig.7: Illustrates removing the grille for wiring and setting controls. Shows the front panel being pulled off, then loosening screws to remove the inner grille. It also shows the internal compartment with the spirit level bubble and terminals accessible, and the control buttons: [UP], [DOWN], and [MODE/SET].

Electrical Household Goods - Energy Consumption Comparison

This energy consumption comparison is a guide to help understand the difference between running the Vent-Axia Response versus other everyday electrical items. Running costs will vary depending on use. The energy price shown is based on the October 2022 energy price cap and will vary by region and supplier.

Disposal

This product should not be disposed of with household waste. Please recycle where facilities exist. Check with your local authority for recycling advice.

Guarantee

Applicable only to products installed and used in the United Kingdom. For details of guarantee outside the United Kingdom, contact your local supplier.

Vent-Axia guarantees this product for 7 years from the date of purchase against faulty material or workmanship. If any part is found to be defective, the product will be repaired, or at the Company's option replaced, without charge, provided that the product:

• Has been installed and used in accordance with the instructions given with each unit.
• Has not been connected to an unsuitable electricity supply (the correct electricity supply voltage is shown on the product rating label attached to the unit).
• Has not been subjected to misuse, neglect, or damage.
• Has not been modified or repaired by any person not authorised by the company.

IF CLAIMING UNDER TERMS OF GUARANTEE

Please return the complete product, carriage paid, to your original supplier or nearest Vent-Axia Centre, by post or personal visit. Please ensure that it is adequately packed and accompanied by a letter clearly marked "Guarantee Claim" stating the nature of the fault and providing evidence of date and source of purchase.

The guarantee is offered as an extra benefit and does not affect your legal rights.

Head Office: Fleming Way, Crawley, West Sussex, RH10 9YX.

UK NATIONAL CALL CENTRE: Newton Road, Crawley, West Sussex, RH10 9JA

SALES ENQUIRIES: Tel: 0344 856 0590 Fax: 01293 565169

TECHNICAL SUPPORT: Tel: 0344 856 0594 Fax: 01293 532814

For details of the warranty and returns procedure, please refer to www.vent-axia.com or write to Vent-Axia Group, Fleming Way, Crawley, RH10 9YX.

EU Authorised Representative: Vent-Axia Sigarenmaker 5 - 5521DJ Eersel Nederland authorisedrep@vent-axia.nl