A AD Oil burners fuel unit

DELTA – TECHNICAL MANUAL Oil burners fuel unit Type A, AD 1- Applications The DELTA aluminium fuel unit type A is an efficient and modern oil burner pump, provided with bilateral delivery ports. Hub and shaft sizes are manufactured to international standards (EN 225-1), so it can be fitted to every oil burner. The pump type A is designed for pumping oil in high pressure oil burners and transfer pump applications. Its features allow an easy pump replacement with every other type of oil pump: the same unit is provided with nozzle port in both the left and right sides. WARNING For the use with low...

DELTA – TECHNICAL MANUAL Pump type A = with built-in solenoid valve AD = without solenoid valve B prefix = biodiesel version (explicit request for nonferrous metals absence) Nozzle capacity (see graph) Rotation (seen from shaft end) R = clockwise L = counter clockwise Pipes system 1 = one pipe 2 = two pipes Coil type F = NF84 (coil with connector plug) Coil power supply A = 230 VAC 50/60Hz B = 110 VAC 50/60Hz C = 24 VAC 50/60Hz 4- Technical specifications Oil viscosity …………………………………. Suction line vacuum ……………………….. 0,5 bar max. Suction line pressure ……………….……... 2 bar max. Return line pressure...

DELTA – TECHNICAL MANUAL Nozzle capacity Power consumption Pressure regulation Shaft sealing By pass Return Suction Vacuum gauge 8 Pressure gauge 9 Nozzle port 10 Solenoid valve 11 Cartridge filter

DELTA – TECHNICAL MANUAL To convert the A/AD fuel unit from the single pipe version to the two pipe version, do the following: 1. 2. 3. 4. Using a 6 mm Allen wrench, remove the 1/4" plug from return port (Fig. 1). Remove the 1/8" plug from vacuum port . Using a 2.5 mm Allen wrench, insert and screw the bypass plug in the vacuum gauge port (Fig. 2). Screw back the 1/8" plug into vacuum port. To convert the A/AD fuel unit from the two pipe version to the single pipe version, do the following: 1. 2. 3. 4. Remove the 1/8" plug from vacuum port . Using a 2.5 mm Allen wrench, unscrew the bypass plug...

DELTA – TECHNICAL MANUAL 11- Nozzle Cut-Off Test (A type only) 1. Make sure that the bypass plug is not used in a single pipe installation. 2. Do not use fuel with additives to avoid the possible formation over time of compounds which may deposit between the gear teeth, thus obstructing them. 3. After filling the tank, wait before starting the burner. This will give any suspended impurities time to deposit on the bottom of the tank, thus avoiding the possibility that they might be sucked into the pump. 4. On initial commissioning a dry operation is foreseen for a considerable length of time (for...