background image

 

Testing the Alarm 

Important Safety Information 

 

Test the alarm to ensure proper operation. 

1.

 

Test alarm by pressing and holding the test button until it sounds. 

The alarm will sound 4 short beeps – 5 seconds pause, and then 

repeat until the button is released. 

2.

 

If multiple alarms are installed within the dwelling, test each alarm. 

Each alarm should trigger other alarms connected within 10 seconds. 

 

The alarm must only be tested by pressing the Test/Silence button. Do not 

ignite combustible materials and start a fire. If no alarm sounds, the unit 

has a defective battery or other failure. Refer to “Trouble Shooting” 

section for a solution. 

 

Caution:  Due to the loudness (85 decibels) of the alarm, always stand an 

arms-length always from the unit when testing. Erratic or low 

sound coming from your alarm may indicate a defective alarm. 

 

NOTE: WEEKLY TESTING IS REQUIRED 

 

 

The alarm may not alert every household member every time. The 

alarm horn is loud in order to alert individuals to a potential danger. 

However, there may be some circumstances where a household 

member may not hear the alarm (e.g. excessive outdoor or indoor 

noise, sound sleepers, drug or alcohol usage, the hard of hearing). If 

you suspect that this alarm may not alert a household member, install 

and maintain specialty alarms. 

 

The alarms have limitations. This alarm is not fool proof and is not 

warranted to protect lives from exposure to Carbon Monoxide. The 

alarms are not a substitute for insurance. Occupants should insure 

their lives and property. In addition, it is possible for the alarm to fail 

at any time. For this reason, you must test the alarm weekly and 

replace the unit after 10 years. 

 

Test alarm weekly to ensure proper operation by pressing the 

test button. Do not use any other test method. 

 

Do not paint the alarms. 

 

Check the alarms on reoccupation of the premises after a vacation. 

Maintenance

 

Carbon Monoxide (CO) Overview 

 

 

Cleaning 

The alarm should be cleaned on a monthly basis as a minimum. To do this: 

 

Turn off the electrical supply to the alarm. 

 

Use a vacuum cleaner with the soft brush to vacuum all sides and 

covers of alarm to remove dust, dirt, and debris. Be sure all the 

vents are free of debris. 

 

Use a damp cloth to clean the alarms cover. 

 

Turn the electrical supply to the alarm on. 

Battery 

The battery should be replaced annually. See ‘Replacing the Battery’ 

 

Carbon monoxide (CO) is an extremely poisonous, colorless, odourless and 

tasteless gas released by the incomplete combustion of fossil fuels such as 

natural gas, bottle gas, petrol, diesel, oil, paraffin, wood, coal coke and 

biofuels.  When inhaled, it causes chemical asphyxiation, when CO mixes 

with the blood and reduces the oxygen carried around the body, 

particularly to the brain.  The following symptoms are typical to CO 

poisoning and should be discussed with all members of the household.  

 

Mild Exposure - Slight headache, nausea, fatigue (flu like symptoms).  

Medium Exposure - Severe throbbing headache, drowsiness and vomiting. 

Extreme Exposure - Unconsciousness, cardiorespiratory failure, death. 

 

Although feeling unwell, victims of CO poisoning can become so 

disorientated that they can no longer decide what to do next, including 

being unable to exit the building or call for assistance.  Very young 

children often show symptoms earlier than adults.  

 

Note:  The CO alarm may not prevent the chronic effects of carbon 

 

monoxide exposure, and it will not fully safeguard individuals 

 

with specific medical conditions. If in doubt, consult a medical 

 

practitioner. 

Important Safety Information

 

 

 

This alarm must not be connected to any other manufacturer’s alarms. 

 

The alarm must not be exposed to dripping or splashing water. 

 

The alarms are designed to give audible warning of a dangerous levels 

of Carbon Monoxide. The alarms do not detect any other gas.  

 

Commonly occurring materials, vapours or gases, e.g. in cleaning 

fluids, polishes, paints, cooking operations may cause nuisance alarms. 

Major interferents are acetylene, ethyl alcohol, hydrogen cyanide, 

hydrogen sulfide, mercaptan, nitrogen dioxide and sulfur dioxide. 

Troubleshooting 

 

Problem 

Remedy 

Problem 

Remedy 

The green LED does not light up 

1.

 

Check electrical power supply 

is switched on 

2.

 

Check electrical connector is 

properly connected to alarm 

3.

 

If the problem still exists, 

replace the alarm 

The alarm chirps twice every 38 

seconds approx. at the same time 

as yellow LED flashes twice and 

goes into fault mode 

1.

 

Clean alarm. Refer to 

“Maintenance” 

2.

 

If the problem still exists, 

replace the alarm 

Alarm does not sound when tested. 

Note: push test button for at least 

five seconds while testing! 

1.

 

Ensure that the battery and 

electrical connector is 

properly connected 

2.

 

Clean alarm 

3.

 

If the problem still exists, 

replace the alarm 

The alarm sounds intermittently or 

when residents are cooking, taking 

showers, etc. (false alarming) 

1.

 

Press test button to pause 

alarm 

2.

 

Open window or fan alarm 

3.

 

Clean alarm 

The alarm chirps once every 33 

second approx. at the same time as 

the yellow LED flashes once 

The battery needs replacing, refer 

to “Replacing the Battery” 

The alarm sounds different from it 

is used to. It starts and stops. 

4.

 

Clean alarm 

5.

 

If the problem still exists, 

replace the alarm 

Warning: Do not disconnect battery to quiet an unwanted alarm. This will remove your protection. Fan the air or open a window to remove smoke/dust. 

 

Product Specification 

Voltage 

  220 - 240V @ 50Hz with 9V battery back-up 

CO Alarm Button – dual 

function 

 

Push to Test 

 

Temporarily silence low battery warning 

Power Consumption 

  <5W 

Battery Specification 

9V battery DC. Brands: 

Gold Peak: GP1604S, GP1604A, 

Raymax: 6LR61 or Duracell: MN1604 

Sound Pattern 

ISO8201 (BI 0.1s -pause 0.1s -BI 0.1s-pause 

0.1s-BI 0.1s-pause 0.1s-BI 0.1s-pause 0.1s with 

RED LED flash, then repeat) 

Battery Life 

Over one year 

Alarm Volume 

> 85dB(A) at 3 meter 

Inter-linkable 

up to 12 detectors 

Alarm Sensitivity (alarm 

conditions) 

30PPM - Alarms after 120 minutes 

50PPM - Between 60 to 90 minutes 

100PPM - Between 10 to 40 minutes 

300PPM - Less than 3 minutes 

Operating Conditions   

- 10 to +55

, 10 to 95%RH  

Storage Conditions 

-20 to +55

, 10 to 95% RH 

Compliance 

BS EN 50291-1:2018 

Product Disposal 

This alarm come under the Waste Electrical & Electronic Equipment Regulations and must be disposed of in 

accordance to these Regulations. 

 

   

 

 

 

 

 

INS 0079   V1.3   05/21   NPD 0592

 

 

P a g e

 

 

Deta Electrical Company Limited 

UK: Panattoni Park  Luton Road  Chalton  Bedsfordshire  LU4 9TT  UK 

EU: Unit 16 Ashbourne Ind. Est.  Ashbourne  Co. Meath  A84 W972  Ireland 

deta.co.uk | Technical Helpline: +44(0)1582 544 548 

 

20

 

 

Testing the Alarm 

Important Safety Information 

 

Test the alarm to ensure proper operation. 

1.

 

Test alarm by pressing and holding the test button until it sounds. 

The alarm will sound 4 short beeps – 5 seconds pause, and then 

repeat until the button is released. 

2.

 

If multiple alarms are installed within the dwelling, test each alarm. 

Each alarm should trigger other alarms connected within 10 seconds. 

 

The alarm must only be tested by pressing the Test/Silence button. Do not 

ignite combustible materials and start a fire. If no alarm sounds, the unit 

has a defective battery or other failure. Refer to “Trouble Shooting” 

section for a solution. 

 

Caution:  Due to the loudness (85 decibels) of the alarm, always stand an 

arms-length always from the unit when testing. Erratic or low 

sound coming from your alarm may indicate a defective alarm. 

 

NOTE: WEEKLY TESTING IS REQUIRED 

 

 

The alarm may not alert every household member every time. The 

alarm horn is loud in order to alert individuals to a potential danger. 

However, there may be some circumstances where a household 

member may not hear the alarm (e.g. excessive outdoor or indoor 

noise, sound sleepers, drug or alcohol usage, the hard of hearing). If 

you suspect that this alarm may not alert a household member, install 

and maintain specialty alarms. 

 

The alarms have limitations. This alarm is not fool proof and is not 

warranted to protect lives from exposure to Carbon Monoxide. The 

alarms are not a substitute for insurance. Occupants should insure 

their lives and property. In addition, it is possible for the alarm to fail 

at any time. For this reason, you must test the alarm weekly and 

replace the unit after 10 years. 

 

Test alarm weekly to ensure proper operation by pressing the 

test button. Do not use any other test method. 

 

Do not paint the alarms. 

 

Check the alarms on reoccupation of the premises after a vacation. 

Maintenance

 

Carbon Monoxide (CO) Overview 

 

 

Cleaning 

The alarm should be cleaned on a monthly basis as a minimum. To do this: 

 

Turn off the electrical supply to the alarm. 

 

Use a vacuum cleaner with the soft brush to vacuum all sides and 

covers of alarm to remove dust, dirt, and debris. Be sure all the 

vents are free of debris. 

 

Use a damp cloth to clean the alarms cover. 

 

Turn the electrical supply to the alarm on. 

Battery 

The battery should be replaced annually. See ‘Replacing the Battery’ 

 

Carbon monoxide (CO) is an extremely poisonous, colorless, odourless and 

tasteless gas released by the incomplete combustion of fossil fuels such as 

natural gas, bottle gas, petrol, diesel, oil, paraffin, wood, coal coke and 

biofuels.  When inhaled, it causes chemical asphyxiation, when CO mixes 

with the blood and reduces the oxygen carried around the body, 

particularly to the brain.  The following symptoms are typical to CO 

poisoning and should be discussed with all members of the household.  

 

Mild Exposure - Slight headache, nausea, fatigue (flu like symptoms).  

Medium Exposure - Severe throbbing headache, drowsiness and vomiting. 

Extreme Exposure - Unconsciousness, cardiorespiratory failure, death. 

 

Although feeling unwell, victims of CO poisoning can become so 

disorientated that they can no longer decide what to do next, including 

being unable to exit the building or call for assistance.  Very young 

children often show symptoms earlier than adults.  

 

Note:  The CO alarm may not prevent the chronic effects of carbon 

 

monoxide exposure, and it will not fully safeguard individuals 

 

with specific medical conditions. If in doubt, consult a medical 

 

practitioner. 

Important Safety Information

 

 

 

This alarm must not be connected to any other manufacturer’s alarms. 

 

The alarm must not be exposed to dripping or splashing water. 

 

The alarms are designed to give audible warning of a dangerous levels 

of Carbon Monoxide. The alarms do not detect any other gas.  

 

Commonly occurring materials, vapours or gases, e.g. in cleaning 

fluids, polishes, paints, cooking operations may cause nuisance alarms. 

Major interferents are acetylene, ethyl alcohol, hydrogen cyanide, 

hydrogen sulfide, mercaptan, nitrogen dioxide and sulfur dioxide. 

Troubleshooting 

 

Problem 

Remedy 

Problem 

Remedy 

The green LED does not light up 

1.

 

Check electrical power supply 

is switched on 

2.

 

Check electrical connector is 

properly connected to alarm 

3.

 

If the problem still exists, 

replace the alarm 

The alarm chirps twice every 38 

seconds approx. at the same time 

as yellow LED flashes twice and 

goes into fault mode 

1.

 

Clean alarm. Refer to 

“Maintenance” 

2.

 

If the problem still exists, 

replace the alarm 

Alarm does not sound when tested. 

Note: push test button for at least 

five seconds while testing! 

1.

 

Ensure that the battery and 

electrical connector is 

properly connected 

2.

 

Clean alarm 

3.

 

If the problem still exists, 

replace the alarm 

The alarm sounds intermittently or 

when residents are cooking, taking 

showers, etc. (false alarming) 

1.

 

Press test button to pause 

alarm 

2.

 

Open window or fan alarm 

3.

 

Clean alarm 

The alarm chirps once every 33 

second approx. at the same time as 

the yellow LED flashes once 

The battery needs replacing, refer 

to “Replacing the Battery” 

The alarm sounds different from it 

is used to. It starts and stops. 

4.

 

Clean alarm 

5.

 

If the problem still exists, 

replace the alarm 

Warning: Do not disconnect battery to quiet an unwanted alarm. This will remove your protection. Fan the air or open a window to remove smoke/dust. 

 

Product Specification 

Voltage 

  220 - 240V @ 50Hz with 9V battery back-up 

CO Alarm Button – dual 

function 

 

Push to Test 

 

Temporarily silence low battery warning 

Power Consumption 

  <5W 

Battery Specification 

9V battery DC. Brands: 

Gold Peak: GP1604S, GP1604A, 

Raymax: 6LR61 or Duracell: MN1604 

Sound Pattern 

ISO8201 (BI 0.1s -pause 0.1s -BI 0.1s-pause 

0.1s-BI 0.1s-pause 0.1s-BI 0.1s-pause 0.1s with 

RED LED flash, then repeat) 

Battery Life 

Over one year 

Alarm Volume 

> 85dB(A) at 3 meter 

Inter-linkable 

up to 12 detectors 

Alarm Sensitivity (alarm 

conditions) 

30PPM - Alarms after 120 minutes 

50PPM - Between 60 to 90 minutes 

100PPM - Between 10 to 40 minutes 

300PPM - Less than 3 minutes 

Operating Conditions   

- 10 to +55

, 10 to 95%RH  

Storage Conditions 

-20 to +55

, 10 to 95% RH 

Compliance 

BS EN 50291-1:2018 

Product Disposal 

This alarm come under the Waste Electrical & Electronic Equipment Regulations and must be disposed of in 

accordance to these Regulations. 

 

   

 

 

 

 

 

INS 0079   V1.3   05/21   NPD 0592

 

 

P a g e

 

 

Deta Electrical Company Limited 

UK: Panattoni Park  Luton Road  Chalton  Bedsfordshire  LU4 9TT  UK 

EU: Unit 16 Ashbourne Ind. Est.  Ashbourne  Co. Meath  A84 W972  Ireland 

deta.co.uk | Technical Helpline: +44(0)1582 544 548 

 

20

 

Summary of Contents for SILENT 100 12V

Page 1: ...ng rather than the electrical installation itself You will be reassured to know therefore that all fittings come with a minimum of a one year guarantee from ourselves and will be corrected or replaced promptly WELCOME If you require any further works to be carried out please do not hesitate to contact our Head Office on 0117 9090517 and we will be more than happy to deal with your enquiry Should y...

Page 2: ...r fuse board as it s commonly known It s usually in the hallway or under stairs cupboard The consumer unit is connected to the electricity meter by the meter tails and all the wiring in your home starts at this point You will see that the sockets cooker lights etc are all on different circuits This is so each circuit can be wired in the appropriate size cable larger cable for the cooker smaller ca...

Page 3: ...fails to reset unplug all plugs in the ring main TV Kettle toaster heater etc Try to reset the RCD RCBO If power is restored then plug in the appliances one by one until loss of power Leave faulty appliance unplugged and restore power Repair or replace faulty appliance If all trip switches are off and all appliances are unplugged and the RCD RCBO still won t reset please contact customer care WHAT...

Page 4: ...Deta Smoke Detector Datasheet 4 ...

Page 5: ...or 1155 Standards Optical BS EN 14604 2008 Heat BS 5446 2 2003 Carbon Monoxide CO BS EN 50291 1 2018 Safety Alarms DS 0242 V1 1 NPD 0648 PI 0146 02 2021 Deta Electrical Company Ltd UK Panattoni Park Luton Road Chalton Bedfordshire LU4 9TT UK EU Unit 16 Ashbourne Industrial Estate Ashbourne Co Meath A84 W972 Ireland Tel 44 1582 544 548 technical deta co uk Smoke Heat and Carbon Monoxide Alarms Desc...

Page 6: ...Deta Optical Detector User Instructions 6 ...

Page 7: ...entrally on a ceiling within a room it is recommended to locate it a minimum of 300mm 12 from the side wall see Diagram 2 If space restrictions prevent this e g narrow corridors landings it must not be located closer than 300mm 12 from the side wall Diagram 2 Put a smoke alarm at both ends of a hallway corridor or large room if it is more than 9000mm 30 long In rooms with an A shaped peaked ceilin...

Page 8: ...alarm from the base by using a screw insert into the slots and flexing outwards see diagram 4 Diagram 4 3 Remove the electrical connector from the alarm by squeezing the locking arms 4 Select the cable entry on the base and remove the cut out Cable entry can either be through the back of the base or via surface mounted mini trunking Leave the gasket in place to prevent dust ingress into the alarm ...

Page 9: ... of escape is developed and practiced A floor plan indicating doors and windows should be made and if possible that two routes of escape are established It is also recommended that fire extinguishers are installed and maintained DANGER If the alarm sounds and it is not being tested it means the unit is sensing smoke THE SOUND OF THE ALARM REQUIRES YOUR IMMEDIATE ATTENTION AND ACTION User Maintenan...

Page 10: ...hold member must hear the alarms warning sound and quickly respond to it to reduce the risk of damage injury or death that may result from fire If a household member is hard of hearing install special alarms with lights or vibrating devices to alert occupants 7 The alarms are designed to give audible warning of a developing fire and can only sound their alarms when they detect smoke combustion par...

Page 11: ...Deta Heat Detector User Instruction 11 ...

Page 12: ...12 ...

Page 13: ...13 ...

Page 14: ...14 ...

Page 15: ... 1 02 21 NPD0648 0532 Deta Electrical Company Ltd UK Pana oni Park Luton Road Chalton Beds LU4 9TT EU Unit 16 Ashbourne Ind Est Ashbourne Co Meath A84 W972 Ireland deta co uk Technical Helpline 44 0 1582 544 548 ...

Page 16: ...Deta CO Detector User Instructions 16 ...

Page 17: ...ng in the centre of the room places it closest to all points in the room Ceiling mounting is preferred in ordinary residential dwellings When mounting an alarm on the ceiling locate it at a minimum of 500mm 20 from the side wall See Diagram 2 500mm Minimum Diagram 2 In rooms with an A shaped peaked ceiling a sloped or cathedral ceiling install a CO alarm between 500mm and 1500mm from the highest p...

Page 18: ...se by using a screw insert into the slots and flexing outwards see diagram 4 Diagram 4 3 Remove the electrical connector from the alarm by squeezingthe locking arms 4 Select the cable entry on the base and remove the cut out Cable entry can either be through the back of the base or via surface mounted mini trunking Leave the gasket in place to prevent dust ingress into the alarm 5 Mount the base i...

Page 19: ... the presence of Carbon Monoxide can be fatal DANGER If the alarm sounds and it is not being tested it means the unit is sensing Carbon Monoxide gas THE SOUND OF THE ALARM REQUIRES YOUR IMMEDIATE ATTENTION AND ACTION Plan of Escape It is recommended that a plan of escape is developed and practiced A floor plan indicating doors and windows should be made and if possible that two routes of escape ar...

Page 20: ...ourne Ind Est Ashbourne Co Meath A84 W972 Ireland deta co uk Technical Helpline 44 0 1582 544 548 20 Testing the Alarm Important Safety Information Test the alarm to ensure proper operation 1 Test alarm by pressing and holding the test button until it sounds The alarm will sound 4 short beeps 5 seconds pause and then repeat until the button is released 2 If multiple alarms are installed within the...

Page 21: ...21 Envirovent 100 document ...

Page 22: ...ealed For Life Ball Bearings Silent Elastic Blocks Backdraught Shutter Adjustable Timer Intelligent Timer Operates after 50 seconds Adjustable Humidity Sensor PIR Pullcord Silver Finish Adjustable Timer After disconnection the shut off time can be delayed between 1 and 30 minutes This has a factory set level of 1 minute Intelligent Timer Operates after a 50 second delay Thereafter the fan operates...

Page 23: ...ly in advance if required Motor Is a 230V 50Hz or a 12V 50Hz A C motor which is assembled on silent elastic blocks and fitted with ball bearings for enhanced working life Fan The impeller is axial flow type Servicing Maintenance The extract fan only requires periodical cleaning using a cloth impregnated with a soft detergent Guarantee The SILENT 100 is covered by a 5 year warranty Compliance CE 40...

Page 24: ...24 Envirovent 150 document ...

Page 25: ...125S SIL125T SIL125HT SIL150S SIL150T SIL150HT SIL150P SIL150HTP Adjustable Timer After disconnection the shut off time can be delayed between 1 and 30 minutes Adjustable Humidity Sensor The level of humidity for the bathroom can be chosen from between 60 and 90 RH The extract fan will continue to work long enough to reach the selected level Pullcord Supplied with pullcord override MODEL A B C D Ø...

Page 26: ...Timer SILENTUB100 SILMV160 100S SILMV160 100T Adjustable Timer After disconnection the shut off time can be delayed between 1 and 30 minutes Installation SILENT MV 160 100 The low profile design of the SILENT MV 160 100 makes it the most effective solution for installations where space is restricted such as false ceilings The unique design of the support bracket allows the central cartridge holdin...

Page 27: ...27 Envirovent 100 and 150 ...

Page 28: ...28 SILENT Instruction leaflet 01 14 ...

Page 29: ...29 Fig 1a Fig 1b 1 2 3 4 5 1 2 3 4 5 6 3 02 14 ...

Page 30: ...30 03 14 Fig 4 Fig 3 Fig 2 L N L N Ls L N L N Ls 4 ...

Page 31: ...31 04 14 L N Fig 7 Fig 6 Fig 5 L N Ls L N Ls T min T min A 5 20 30 L N SILENT T SILENT IT SILENT PIR 5 ...

Page 32: ...32 05 14 Fig 10 Fig 9 Fig 8 L N L N Ls L N L N Ls 2 3 4 1 5 6 7 8 ON 2 2 3 3 4 4 1 1 5 5 6 6 7 7 8 8 ON OFF 6 ...

Page 33: ...33 06 14 Fig 1 1 L N L N Ls SILENT 100 SILENT 125 150 A B E D C ØF MODEL A B C D E ØF SILENT 100 158 158 109 3 84 6 79 98 9 SILENT 125 180 180 119 89 80 118 SILENT 150 214 214 149 113 5 95 147 SILENT 7 ...

Page 34: ...ered and that the details on the instruction plate fulfil your requirements The installation and the disconnection device of the fixed installation used must be in accordance with the installation regulations in force in each country Once the product has been installed pass this booklet to the end user Recommendations IMPORTANT Before installing and wiring the unit ensure that the mains supply is di...

Page 35: ...tmosphere or via a ducted system fig 2 The unit can be mounted on the wall or ceiling using the 4 raw plugs and the screws provided Make a hole in the wall or ceiling of diameter SILENT 100 105 to 107 mm SILENT 125 125 to 132 mm SILENT 150 160 to 158 mm If using the EnviroVent high rise wall kit please refer to kit for core drill size If the unit is to be installed in a ducted system use the follow...

Page 36: ...ighting circuit To set the timer turn the potentiometer on the printed circuit board as fig 7 To reduce the run on time turn anticlockwise min 1 minute To increase the run on time turn clockwise max 30 minutes SILENT 100 IT This version is only available as SILENT 100 This model is provided with an adjustable over run timer The timer allows the fan to continue to operate for the selected period aft...

Page 37: ...n for hours without stopping the Interval function allows the fan to switch off automatically one hour after it began to run The extractor keeps switched off during the set time for interval function If the humidity level is still above the set level when the time interval is over the extract fan switches on again and run during one hour To select this function put the dip switch 1 to position ON To...

Page 38: ...with the dip switch 8 Factory settings Interval function OFF Interval time 4h Humidistat 60 HR Timer 1 minute Start up timer function OFF SILENT 100 PIR This version is only available as SILENT 100 Models provided with a PIR detector The unit starts automatically when a movement is detected with maximum distance of 4 meters fig 9 They are also fitted with an adjustable run on timer 1 to 30 minutes a...

Page 39: ...tegories Steel and iron Plastics Electronic scrap After Sales Service We recommend you do not dismantle or remove any other parts than those mentioned as any tampering would automatically cancel the guarantee Thank you for choosing EnviroVent If you experience any problems please call our dedicated Technical Team on 0345 27 27 810 EnviroVent EnviroVent House Hornbeam Business Park Harrogate HG2 8P...

Page 40: ...e to the fitting wiring instructions relevant guidance documents and by a competent and qualified person proof may be required please return the product to the place of purchase for a replacement Warranty Conditions Exclusions Please note that a receipt will be required as proof of purchase Fans bought from an unapproved source including but not limited to auction websites are not covered by the war...

Page 41: ...41 14 14 Ref 9023065401 EnviroVent Ltd EnviroVent House Hornbeam Business Park Harrogate HG2 8PA 01423 810 810 info envirovent com www envirovent com ...

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