Ventam 85 Installation & Commissioning Instructions Download Page 7

Page 7 of 8 
© Ventam Systems Ltd 

Notes 

NOTE THAT FAN(S) POWER SUPPLY CABLES / ISOLATORS / SPEED  
CONTROLLERS ARE NOT SHOWN ON THIS DIAGRAM AND MUST ALSO BE 
INSTALLED TO SUIT THE APPLICATION. 

Fused spur to be wall mounted adjacent to panel. 

1.5mm² two core cable. Leave 500mm-length slack at panel.  Leave 2-metre 
length slack at fan end 

2.5mm² two core and earth cable. Leave 500mm-length slack at panel. 

THREE OFF 1.5mm² Three core (two core AND earth) cables.  Leave 2-metre 
length slack at valve end, 500mm-length slack at panel end. Terminate cable in 
flex outlet plate adj. to valve. 

Panel provides a switched 240Vac supply  to operate the gas isolation valve. 

Panel should be mounted in an accessible position, approx. 1.6m AFFL. 

 

                          

One line diagram for electrical first fix 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

 

 

 

 

 

 
 

 

 

 
 
 
 
 
 
 
 
 
 

Note 6 

Note 2 

Note 3 

Note 3 

 

Supply Air Fan 

Flow Sensor 

next to fan 

 
 
 

 

 

 

Canopy 

Extract Air Fan 

Flow Sensor, 

next to fan

 

 

 

Ventam Systems Ltd 
Unit D4 Seedbed Business Centre 
Vanguard Way Shoeburyness 
Essex SS3 9QY 
Phone  01702 382 307 
Fax       01702 382 340 

 

Gas Isolation 

Valve 

240Vac

 

 
 

Un-switched 
fused spur. 
Panel power 
supply  
240Vac 5A

 

single

 phase. 

 

Ventam 85 Control Panel 

 

Mounted on wall in kitchen, 

adjacent to exit door. 

 

approx. 1600mm AFFL 

 

Panel dimensions 

H 310mm  

W 230mm 

D 160mm 

 

Note 5 

Note 4 

Note 7 

Additional 

Emergency 

Stop 

Button(s)

 

Note 3 

Summary of Contents for 85

Page 1: ...e the main gas isolation valve has opened if the gas pressure subsequently falls below a pre set level 60 of line pressure or a fan is turned off the main gas valve will close Each time a fan is turned off OR an emergency stop is depressed OR the line gas pressure falls too low the system MUST BE GAS PROVED AGAIN 3 Ventam 85 Interlock Panel Location Install the Ventam 85 Interlock Panel adjacent t...

Page 2: ...ressure switch unit to the ductwork connector Pressure switch tubing must slope down continuously from the pressure switch to the ductwork to allow condensate to naturally drain from the pipe work to prevent blockages occurring Twists loops and kinks are not permitted in the pressure switch tubing The pressure switch unit location must allow 600mm clearance to the front and 150mm below for access ...

Page 3: ...l Install cables to suit the valve size between the Ventam 85 Control Panel and the Gas Valve Re set the Emergency Stop on the Control Panel by turning the button in the direction of the arrows on the button Ensure it is safe to start fan s Check all panel terminations are secure Use the correct tool and do not over tighten Ensure that the following factory installed terminal links are fitted if n...

Page 4: ...gency stop button panel will indicate Emergency Stop Re set additional emergency stop button on the front of panel Repeat step 11 7 for each additional emergency stop button fitted 12 0 Gas Proving check that gas cannot come on if fans are off Turn off one of the fans Fan s off lamp and Gas Off lamp will be lit Operate the Gas Power Switch by switching it to the right Depress the Start Gas Proving...

Page 5: ... the fan will run and this will prevent user problems and premature fan failure A typical installation requires that the fresh air supply flow is at 85 of the extraction air flow and this can be allowed for in fan pressure switch adjustments to control minimum 14 4 Using a current monitor to monitor the fan s A current monitor may be used instead of a fan pressure switch to check that the fan is o...

Page 6: ...w Sensor Status signal Air Flow 240vac signal to Isolation valve Plastic tubing Fan Extract fan isolator or speed controller Gas proving Valve Gas Flow Extract Duct VENTAM 85 CONTROL SYSTEM Air Flow pressure switch mounted adjacent to each fan Com N O ve ...

Page 7: ...x outlet plate adj to valve 6 Panel provides a switched 240Vac supply to operate the gas isolation valve 7 Panel should be mounted in an accessible position approx 1 6m AFFL One line diagram for electrical first fix Note 6 Note 2 Note 3 Note 3 Supply Air Fan Flow Sensor next to fan Canopy Extract Air Fan Flow Sensor next to fan Ventam Systems Ltd Unit D4 Seedbed Business Centre Vanguard Way Shoebu...

Page 8: ...rminals 3 Terminal 20 MUST NOT BE USED 4 Dungs gas pressure switch connections Terminal 2 normally open terminal 3 Common 5 Please phone 01702 382 307 if assistance is required L N E Incoming panel supply 240volt ac 2 3 N O C EXTRACT FAN PRESSURE SWITCH 2 3 N O C INLET FAN PRESSURE SWITCH ADDITIONAL EMERGENCY STOP BUTTON 3 2 C N O E GAS VALVE PRESSURE SWITCH E N L MAIN GAS VALVE 1 2 L N E GAS BYPA...

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