background image

 

 

54 Stonedon Drive

 

 

East Tamaki

 

 

PO Box 58 776

 

 

Greenmount

 

 

Auckland

 

 

ph 09 273 9191

 

 

fax 09 273 9194

 

[email protected]

Sun BU112 Diesel Burner

Tuning and Maintenance Guide

FERROLI - SUN Diesel burner maintenance guide

Every third fill: Biocide tank treatment & water removal

Diesel fuel contains fungal & bacterial agents which flourish with moisture.  It is very important 
to drain condensation out of the diesel tank to prevent the agents from growing.  Every third 
fill 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 refilling with clean diesel.

Annual service & clean: 

Replace Oil nozzle:  Oil nozzles have a limited life & should be changed 

annually to ensure efficiency & 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 sacrificial 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 fixing allen keys and removing the oil line.

Inhibitor:  Underfloor systems should be dosed with inhibitor annually to prevent corrosion 

problems.

Drive key

Reviews: