Ferroli Sun BU112 Operating manual

54 Stonedon Drive
East Tamaki
PO Box 58 776
Greenmount
Auckland
ph 09 273 9191
fax [phone]
[email protected]
Sun BU112 Diesel Burner
Tuning and Maintenance Guide
FERROLI - SUN Diesel burner maintenance guide
Every third ll: Biocide tank treatment & water removal
Diesel fuel contains fungal & bacterial agents which ourish with moisture. It is very important
to drain condensation out of the diesel tank to prevent the agents from growing. Every third
ll we recommend dosing the diesel tank with Fuel Biocide BC-250, 1 litre of biocide treats
1000L of fuel. If a tank gets a full blown infection it is necessary to drain & clean the tank
before relling with clean diesel.
Annual service & clean:
Replace Oil nozzle: Oil nozzles have a limited life & should be changed
annually to ensure efciency & reliability. If the boiler is short cycling
it is a good opportunity to down size the nozzle. See step 2 of the
setup guide for instructions on selecting and changing the nozzle.
Replace drive key: The drive key is a plastic interface between the fan motor & diesel gear
pump. This is a sacricial part which prevents the motor from burning out if the gear pump
seizes. This part wears with every start-up and should be changed annually for reliability. Re-
move the gear pump by loosening the three xing allen keys and removing the oil line.
Inhibitor: Underoor systems should be dosed with inhibitor annually to prevent corrosion
problems.
Drive key

BU56: FERROLI - SUN G10 Diesel burner setting guide
This is a guide only, the exact settings required must be determined by running a bacharach
smoke test as the nal step in the procedure .
Step1: Select the burner output:
Make an estimation of the output required and match the nozzle size and pump pressure to
achieve the kW output.
Step 2: Fitting the nozzle & positioning the electrodes
After tting the nozzle, check the correct position of the electrodes and bafe, according to the
distances shown below.
Step 3: Adjust the settings
Adjust the diesel pressure, head setting, & air setting to match the required output as per the
chart below.
Adjust the head adjustment A by regulating the hex bolt B
Adjust the Air adjustment by turning the damper adjuster C
Fit the pressure gauge to the P port on the diesel pump
and set the Diesel pressure by turning screw D
Step 4: Fine tune & Conrm the settings
Run the bacharach smoke tester and adjust the Air adjustment C until a test between 1 & 2
is achieved. If the ue test is too sooty more air is required, if the test is too light less air is
required. A test reading of 0 is an indication of excess air which can cause intermittent starting
problems.