19
221992D
6 Commissioning
After a short period the burner will go out.
The correct working of the flame supervision is shown by the
“Burner On” neon going out and the ignition sequence starting
up.
After a short period the boiler will shut down.
If the lighting sequence described fails, refer to fault finding
section 9.
To carry on turn the gas service cock “On”, see diagram 6.1.
To re-start the lighting sequence, turn the burner temperature
control to “0” then fully clockwise to “Max.”.
During normal operation when the boiler switches “Off”, the
burner will go out. The automatic lighting sequence will work
again when heat is required.
If the reset neon lights, turn the boiler temperature control to "0"
(off), wait 30 seconds, then repeat the lighting instructions.
6.4 Testing - Gas
With the boiler on proceed as follows:
Test for gas soundness around the boiler gas components
using a suitable leak detection fluid, in accordance with the
current issue of BS6891.
Check the burner gas pressure at least 10 minutes after boiler
has lit, refer to Data Label, see diagram 1.2.
If necessary adjust the gas pressure to obtain the required
setting turning screw clockwise, to decrease pressure, see
diagram 6.1.
Should any doubt exist about the gas rate, check it using the
gas meter test dial and stop watch at least 10 minutes after the
burner has lit, making sure that all other gas burning appliances
and pilot lights are off.
Gas rate: Buckingham 4 BFF80 : 2.8m
3
/h (79ft
3
/h)
is for guidance only, dependent on the heat setting.
Turn the boiler temperature control fully anti-clockwise to “0”.
Isolate from the electrical supply.
Remove the pressure gauge from the test point and refit screw,
making sure a gas tight seal is made.
When the boiler temperature control is turned to the “0” position,
by hand, wait at least 30 seconds before turning On again.
There may be an initial smell given off from the boiler when new,
this is quite normal and it will disappear after a short period of
time.
6.5 Testing - All Water Systems
Allow the system to reach maximum working temperature and
examine for water leaks.
There should be no undue noise in the system.
The boiler should then be turned off and the system drained off
as rapidly as possible,whilst still hot.
Refill system.
6.6 Open Vented System
Ensure there is no pumping over of water or entry of air at the
open vent above the feed and expansion cistern.
Diagram 6.2
LOCATING
STUDS
LOCATE
UNDER LIP
FRONT
PANEL
Diagram 6.3
FRONT PANEL
SECURING SCREWS
BOTTOM PLINTH
PANEL
SECURING SCREWS
6.7 Adjustment - Fully Pumped Open Vented
System
When commissioning the system the boiler should first be fired
on full service, that is, central heating and domestic hot water.
Adjust the pump to the system design setting, then balance the
system, making adjustments as necessary.
6.8 Completion
Adjust the boiler temperature control and any system controls
to their required settings.
Fit the bottom plinth panel and secure with two dog point
screws, see diagram 6.2.
Finally fit the front panel by hooking under front of top panel
locating on the two studs, see diagram 6.2 and securing at the
bottom on to the bottom plinth panel with two screws, see
diagram 6.3.
