Vent-Axia Response Series Assembly instructions

CONTINUOUS EXTRACT FAN

Installation and Wiring Instructions

Stock Ref. N°

Response dMEV 404535

Response TP 404876

Response HTP 404877

PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH ILLUSTRATIONS.

PLEASE SAVE THESE INSTRUCTIONS.

Response

IPX4

220-240V~50Hz

Installation and Wiring Instructions for the Response Range of Extractor Fans.

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

A. 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.

B. The Fan should be provided with a local isolator switch

capable of disconnecting all poles, having a contact

separation of at least 3mm.

C. Ensure that the mains supply (Voltage, Frequency, and

Phase) complies with the rating label.

D. The Fan should only be used in conjunction with the

appropriate Vent-Axia products.

E. The fan should only be used in conjunction with fixed wiring.

F. 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.

G. The Fan should not be used where it is liable to be subject

to direct water spray for prolonged periods of time.

H. 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.

I. 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.

J. Young children should be supervised to ensure that they do

not play with the appliance.

DESCRIPTION

The Response fan is a continuously running extract fan for kitchens, utility rooms,

bathrooms and toilets.

The product incorporates an airflow detection system that detects the installation duct

resistance and maintains the correct fan speed to achieve the preset extract flow rate of

either 6l/s, 8l/s or 13l/s, minimising energy use and noise (see Section C-Setup for more

information).

The incorporated LED display allows the installer to verify the installed flow rate, and

also provides feedback for system pressure and days installed (for landlords).

The fan can be wall, panel/ceiling or window mounted.

ACCESSORIES (not supplied)

WALL FITTING KIT

A range of white (stock ref. 254102) or brown (stock ref. 254100) 100mm wall kits are

available for installing into most walls using telescopic liners supplied.

WINDOW KIT stock ref. 407927

CEILING KIT stock ref. 407928

150mm COVERSION KIT stock ref. 408680

A. INSTALLATION

PANEL/CEILING MOUNTING

1. Cut a 105mm diameter hole.

2. Remove the front panel by carefully pulling away from the fan.

3. Loosen the two self-retaining screws and remove the inner grille by carefully

pulling away from the housing.

4. 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.

5. Wire the fan as described in Section B-Wiring. Adjust any settings as required

(see Section C-Setup).

6. After installation, ensure impeller rotates freely.

7. Replace the inner grille and tighten the retaining screws. Replace the front panel.

WALL MOUNTING

1. For wall mounting cut a 117mm diameter hole 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 exterior grille into position with the louvres positioned downwards.

3. Remove the front panel by carefully pulling away from the fan.

4. Loosen the two self-retaining screws and remove the inner grille by carefully

pulling away from the housing.

5. Mark the screw centres through the holes in the fan back plate. Drill, plug and

screw into position.

6. Wire the fan as described in Section B-Wiring. Adjust any settings as required

(see Section C-Setup).

7. After installation, ensure impeller rotates freely.

8. Replace the inner grille and tighten the retaining screws. Replace the front panel.

WINDOW MOUNTING

1. Refer to window kit instructions supplied with the kit.

B. WIRING.

WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE

ISOLATED FROM THE POWER SUPPLY DURING THE INSTALLATION /

OR MAINTENANCE.

IMPORTANT

The cross - sectional area of supply cord used should be ranged from 1 -1.5mm2.

The extraction fan is suitable for connection to 220-240V 50Hz supply.

The fan is a class ll double insulated product and MUST NOT be earthed.

1. Select and follow the appropriate wiring diagram. (Fig. 1, 2 or 3)

2. Check all connections have been made correctly and ensure all terminal

connections and supply wires are securely fastened.

3. Ensure the impeller rotates and is free from obstructions.

C. SETUP

WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE

ISOLATED FROM THE POWER SUPPLY DURING THE INSTALLATION /

OR MAINTENANCE.

1) Trickle speed selection (6l/s or 8l/s) – (Fig. 5) (dMEV,TP & HTP models)

In normal running mode the fan can extract at either 6l/s (22m3/h) or 8l/s (29m3/h)

flow rate. The fan will boost to 13l/s (46.8m3/h) when the LS connection is switched or

humidity rises above the set point (see humidity setting below).

Factory set at 6l/s (22m3/h).

Remove jumper connector (JP1) if 8l/s (29m3/h) extract flow rate is

required.

2) Airflow detection system – enable/disable (Fig. 5) (dMEV,TP & HTP models)

The airflow detection system will detect the installation duct resistance and also react

to external wind conditions to ensure the fan maintains a constant extraction rate.

This can cause the fan to ramp up and down and in most applications will not be

required. To turn this feature on, complete the following:

Push dip switch 1 (SW1) into the on position to turn on constant flow mode.

Push dip switch 1 (SW1) into the off position to turn off constant flow mode.

(Factory set)

IMPORTANT – On first power up, the fan will run through its initialisation routine. For

the first 15 minutes, the flow rate, pressure and day logger will be displayed. The fan

may not be fully functional until this is over. After the first 15 minutes, the fan will

calibrate. See Fig.7 for the calibration procedure. Once this is complete the fan will

operate normally with the display off.

3) LED Display with prism (Fig. 6) (dMEV,TP & HTP models)

For the first 15 minutes EVERY time the fan is powered off and on (via the isolator),

the display will cycle between displaying the actual airflow rate (l/s) being achieved*

and system pressure (Pa). They will cycle every 10-20 seconds, where the pressure

will flash, and the airflow rate will be on constantly. The day logger feature will only be

displayed once, after the first cycle of displaying the flow rate and system pressure.

*Airflow detection system must be enabled to display the calibrated flow rate.

4) Adjustable timer (TP model only)

The TP model incorporates an adjustable overrun timer. This adjusts the time the fan

will continue to run on boost after the LS connection has been deactivated. The timer

function is factory set at approx 15 minutes but can be adjusted between 1 & 30

minutes. This is also the run time period for the integral pullcord.

To REDUCE the operating time, use a small screwdriver to turn the adjuster Fig.5.

CLOCKWISE. To a minimum setting of 1 minutes.

To INCREASE the operating time, use a small screwdriver to turn the adjuster Fig.5.

ANTI-CLOCKWISE. To a maximum setting of 30 minutes.

5) Fixed timer (HTP model only)

The HTP model incorporates an optional fixed timer – set at 15 minutes. This is

the time the fan will continue to run on boost after the LS connection has been

deactivated. The integral pullcord timer is fixed at 15 minutes and cannot be

disabled.

To ENABLE the fixed overrun timer, link JP2 as shown in fig. 5.

To DISABLE the fixed overrun timer, remove the link in fig. 5.

6) Adjustable ambient response humidistat (HTP model only)

The HTP model incorporates an adjustable ambient response humidistat. The fan

will increase the extract rate if the humidity rises above the set point – adjustable

via the pot shown in fig. 5.

To LOWER the set-point use a small screwdriver to turn the adjuster Fig.5.

CLOCKWISE. This makes the controller MORE sensitive.

To RAISE the set-point use a small screwdriver to turn the adjuster Fig.5.

ANTICLOCKWISE. This makes the controller LESS sensitive.

Note: The ambient response feature will automatically boost the fan to 13l/s if

the humidity rises quickly irrespective of the set point and run on for the pre-

determined timeout period.

7) Pullcord (TP and HTP models only)

The integral pullcord activates the timer (see 4 and 5 above) and the fan will run at

13l/s for the set time period. If the integral pullcord is pulled for a second time

(once activated), the timer will be cancelled and the fan will revert back to the

trickle extract rate.

To remove the pullcord, cut the cord and leave the switch in place. There is no

need to switch the fan on/off beforehand.

8) System pressure detection (dMEV, TP & HTP models)

The fan can detect the system pressure for fault finding. If the fan seems noisy or

cannot achieve the desired flow rate, this could be due to a blocked duct or the

ducting has not been suitably stretched during installation (if flexible ducting is

used). This is displayed during the first 15 minutes EVERY time the fan is

powered off and on (via the isolator). The number is displayed in Pascals (Pa) and

the higher the number, the more torturous the system (and air path) – i.e. harder

for the fan to move the air through the ducting. As a consequence the fan has to

use more energy and it will increase the fans noise level.

The fan will maintain the correct airflow rate up to a maximum of 30Pa system

pressure. The system pressure will be different for all speeds, but highest on the

13l/s setting.

9) Fan silent running boost mode: This feature delays the boost operation for a

maximum of 20 minutes to reduce noise and cold drafts while bathing. After LS is

disconnected, the fan will look at the amount of time since the LS was activated

and then run the fan on boost for that same period or to a maximum of 20

minutes, whichever is shorter.

a. Dip switch 2 in the off position – Traditional mode (factory set) (fig. 5):

i. Standard running - with LS off, pullcord off. Fan continues to run on

the set trickle speed - 6 or 8l/s.

ii. When the integral pullcord is activated (TP & HTP model only), the

fan will run at 13l/s (boost) for a timed period.(Timer is adjustable on

TP model, but fixed to 15 minutes on the HTP model).

iii. When the LS is connected, the fan will run at 13l/s until deactivated

(plus overrun timed period where applicable).

b. Dip switch 2 in the on position:

i. Standard running – with the LS off, pullcord off. Fan continues to run

on the set trickle speed - 6 or 8l/s.

ii. When the integral pullcord is activated (TP & HTP model only), the

fan will boost as per “Traditional Mode” above.

iii. When the LS is activated, the fan will remain in trickle mode until the

LS is disconnected for a maximum of 20 minutes.

iv. After this 20 minute period or when the LS is disconnected

(whichever happens first), the fan will change to 13l/s (boost mode)

and continue to run on boost for the same period as between the LS

activation and deactivation, up to a maximum of 20 minutes.

v. However, if the LS is deactivated within 3 minutes of activation, then

the fan continues in trickle mode and does not boost.

10) Calibration

The airflow sensor is calibrated at the factory using UKAS accredited

equipment. Details of the equipment and certification can be found on the

inside of the fan.

D. 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. Carefully pull the front panel off the inner grille. (fig. 4)

3. Wipe the inlets and front face with a damp cloth until clean. Be careful not to push dirt into the

airflow sensor.

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

E. TROUBLESHOOTING

1. Display shows 999 during calibration.

a. Cause:

i. The fan failed to calibrate due to excessive system pressure

b. Solution:

i. Check that the ducting is not blocked and where flexible ducting is used that it is stretched

as much as possible. Switch the power off and on again to retry calibration.

2. Fan continuously speeds up and down:

a. Cause:

i. This usually means the fan cannot stabilise at the desired airflow rate.

ii. This could be due to the ducting being blocked, or being very windy.

b. Solution:

i. If this persists after the ducting has been checked or the property is very exposed to high

winds, it is recommended to turn the airflow detection system off. (Section C2)

3. The fan continuously runs in boost (HTP model only):

a. Cause:

i. The room is damp or recently redecorated.

ii. The humidity set point is set too low.

b. Solution:

i. If the room is damp or has recently been decorated, it could take up to 2 weeks for the

humidity levels to stabilise. Please leave the fan to dry out the room and after this period

the fan should run normally.

ii. The humidity set point could be set too low. Adjust the humidity set point to a higher

setting. (Section C6)

4. The fan does not turn to boost when the humidity is high:

a. Cause:

i. The humidity set point is set too high.

b. Solution:

i. Adjust the humidity set point to a lower setting. (Section C6)

5. Water is dripping out of the fan when installed in a ceiling:

a. Cause:

i. This is caused by condensation forming on the inside of the ducting and dripping out of the

fan inlet.

b. Solution:

i. This is normal and the fan is designed to handle condensation build up. However a

condensation trap connected immediately after the fan will help to prevent water dripping

into the room.

Fig.2 Continuous boost (13l/s) with no trickle facility. (The fan is internally fused)

Fig.3 Continuous trickle with boost facility. (The fan is internally fused)

Fig.1 Continuous trickle (6l/s or 8l/s) with no boost facility. (The fan is internally fused)

Siting

the

fan.

 

Fig.4. Removing the grille for wiring and setting the controls

Pull front panel as shown. Loosen screws – DO NOT REMOVE FROM GRILLE

(the screws are self-retaining)

Pull inner grille away from housing as shown. When replacing grille, ensure the flow sensor is

aligned with the corresponding slot in the grille.

Fig.5. Controls

Note:- Before changing any of the dipswitch positions the fan

must be isolated from the power supply.

Trickle speed (JP1) (All models)

8l/s = Remove Jumper Connector

6l/s = Replace Jumper Connector (factory set)

(For 13l/s, permanently link terminal connections L to LS)

Airflow detection system (All models)

Auto sensing mode = Dip switch 1 (SW1) into the

on position to turn on airflow detection system.

Manual mode = Dip switch 1 (SW1) into the off

position to turn off airflow detection system

(factory set)

Silent running boost mode (TP & HTP only)

Off = Dip switch 2 (SW1) in the off position

Traditional mode (factory set)

On = Dip switch 2 (SW1) in the on position

This feature will delay the boost operation

for a maximum of 20 minutes.

(see C.SETUP section Item 9)

JP1 - Trickle

speed

SW1 – Airflow

detection system

and Silent running

boost

JP2 - (HTP

ONLY)

Fixed timer

enable/

disable

jumper

Adjuster for

timer (TP) or

humidistat

(HTP)

Fig.6. Display and prism

The display can only be seen from the side. This is to allow the installer to view the display with the cover

attached as this can affect the airflow through the sensor.

Every 10-20 seconds the display will switch between displaying airflow rate and system pressure. The system

pressure will flash.

Airflow will be displayed like this: 13.2 (13.2l/s flow rate)

Pressure will be displayed like this: 17 (flashing – 17Pa system pressure)

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