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© Ventam Systems Ltd
11.0
System Commissioning
11.1 Confirm that the cables to the gas proving valve are terminated correctly.
Incorrect terminations will cause system and valve damage.
11.2 Deleted
11.3 Ensure all emergency stop buttons are reset.
11.4 Turn on all interlocked fan(s
) Increase fan speeds until panel indicates “Fan(s) On”.
Panel should indicate “Fan(s) on”.
11.5 Switch power off and then back on again to each interlocked fan in turn
Panel should indicate “Fan(s) off” and then “Fan(s) on” for each fan in turn.
Note that it will take up to thirty seconds for the Fan(s) off light to come on due to the time it
takes for the fan to stop turning!
11.6 Ensure fan(s) are on
and increase fan speed to the level required to indicate “Fan(s) On”.
Depress emergency stop button on the front of panel
– panel will indicate “Emergency Stop”.
Re-set emergency stop button on the front of panel.
11.7 Testing additional emergency Stop buttons.
Ensure fan(s) are on
and increase fan speed to the level required to indicate “Fan(s) On”.
Depress additional emergency 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.
Operat
e the “Gas Power Switch” by switching it to the right..
Depress the “Start Gas Proving” button and keep button depressed for thirty seconds.
THE GAS ON PANEL LIGHT SHOULD NOT COME ON WHILE ANY FAN IS OFF.
13.0 Gas Proving
Ensure Fan(s) On light is on.
Ensure gas supply to valve is turned on
.
Ensure all gas appliances are isolated.
Operate the “Gas Power Switch” by switching it to the right.
Depress the “Start Gas Proving” button and keep button depressed until the “Gas On” panel
light comes on.
NOTE
– IF IT TAKES LONGER THAN ONE MINUTE FOR THE “GAS ON” LIGHT TO
COME ON,CHECK THAT ALL VALVES ARE CLOSED AND THAT PIPE-WORK IS FREE
FROM LEAKS.
When “Gas On” light is lit purge air from the system and commission appliances.
Turn off all gas appliances and close all appliance isolation valves.
14.1 Gas Proving
“Gas On” light should still be lit.
Turn off all gas appliances.
Turn off one of the fans
– “Fans Off” AND “Gas Off” light should be lit on panel.