Burner Live Run – MDFL 3300 & MDFL 4000
The instructions in this section are presented as a continuous sequence. No separate set of actions
(for example, checking the flame signal) should be followed in isolation without paying particular
attention to any safety precautions such as isolating the electrical supply to the burner which should
precede such actions. At all stages, the operation of the burner should be checked against the
programming controller sequence table on page 22.
Before proceeding, check again that:
1.
The electrical wiring is complete and complies with all relevant Codes and Standards.
2.
All fuses are fitted and are of the correct ratings.
3.
The gas and oil supply pipework is correctly installed and has been leak tested. If, at any time
during commissioning, there is a SMELL OF GAS the gas and electricity supplies must be
isolated and the leak sealed before proceeding.
4.
The appliance is in an appropriate and safe condition to be fired.
5.
The appliance controls are set to call for heat.
Selecting Gas
1.
Ensure that the ball valve in the oil line is closed.
2.
Turn the fuel selector switch on the control panel to the gas position.
Gas Supply Pressure
The supply pressure at the inlet to the burner shall not be less than that required for the maximum
required continuous output from the burner and not more than 200 mbar.
Before proceeding with commissioning:
1.
Fit a manometer or other approved pressure measuring instrument to the pressure test point on
the upstream side of the first safety shut-off valve.
2.
Open the manual gas isolation valve at the inlet to the gas train.
3.
Check that the gas pressure is adequate.
Establishing the Start Gas Flame
1.
Remove the control panel cover and remove the pilot check link. Replace the cover.
2.
Establish the electrical supply to the burner and switch on the burner.
3.
The burner controller will run through its sequence, initiating the ignition spark and opening the
start gas safety shut-off valve.
4.
The start gas flame will be established and the UV cell will begin monitoring. The burner will
operate continuously at start gas rate. If the burner goes to lockout, increase the start gas rate
slightly at the governor and reset the burner.
5.
Confirm the leak tightness of the pipework downstream of the start gas safety shut-off valve
using a proprietary detection fluid.
** See Note on Page 33.
6.
Switch off the burner. Switch on the burner and allow the ignition sequence to be repeated,
confirming the start gas flame is reliable.
7.
Switch off the burner and the electrical power supply to the burner. Remove the control panel
cover and replace the pilot check link. Replace the cover.
MDFL 3300 & MDFL 4000 Issue 2 08/08
Page 31
Summary of Contents for MDFL 3300
Page 16: ...MDFL 3300 MDFL 4000 Issue 2 08 08 Page 15 VALVE PROVING SYSTEM LDU 11 Standard fitting...
Page 30: ...MDFL 3300 MDFL 4000 Issue 2 08 08 Page 29 MODULATING CAM BOX...
Page 43: ...Electrode Setting Details MDFL 3300 MDFL 4000 Issue 2 08 08 Page 42 All dimensions in mm...
Page 48: ...NOTES MDFL 3300 MDFL 4000 Issue 2 08 08 Page 47...