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© Ventam Systems Ltd
Ventam 85 Gas Proving & Interlock
wiring schematic 1
Panel Terminals
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
17
18 19 21
22 23 24 25
▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀ ▀
Notes
1
When fan pressure switch wiring is connected to terminals 1 + 2 OR 3 + 4, the factory
fitted link must be removed.
2
Link between terminals 11 and 12 must be installed unless (Normally Closed Volt- Free
Contact) emergency stop buttons are fitted in series to these terminals.
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
BYPASS
VALVE
▀ ▀ ▀
N/C N/O C
VOLT FREE
EMERGENCY
STOP
REPEAT
CONTACTS
▀ ▀ ▀
N/C N/O C
VOLT FREE
FAN REPEAT
CONTACTS
Ventam Systems Ltd
Unit D4 Seedbed Business Centre
Vanguard Way Shoeburyness
Essex SS3 9QY
Phone 01702 382 307
Fax 01702 382 340