Oil burners fuel unit with solenoid valve Type VM Certified Quality System Printed in Italy - DE112/0404

Oil burners fuel unit with solenoid valve Type VM The DELTA fuel unit is an efficient modern oil burner pump with compact design and since its mounting flange, hub and shaft sizes are manufactured to international standards (EN 225), it can be fitted to every oil burner. • High suction capability. • Suitable for one or two pipe systems. • Self priming. • Reliable pressure and positive cut-off. • Solenoid valve incorporated. • Special rotary shaft seal. • Silent operation. • Low power absorption. • Easily installed and adjusted. • Pressure and vacuum gauge ports. 5 2- Applications The DELTA fuel...

Pump type Nozzle capacity (see graphs) Rotation (seen from shaft end) R = clockwise L = counter clockwise Nozzle line (seen from cover) R = right L = left Pipes system 1 = one pipe 2 = two pipes Pressure ranges Factory setting 3 = 2 ÷ 10 bar 4 ±0,3 bar 4 = 4 ÷ 15 bar (Standard) 10 ±0,3 bar 5 = 8 ÷ 20 bar 15 ±0,3 bar 6 = 10 ÷ 25 bar 20 ±0,3 bar Special versions U = cover type U with 65 cm² stainless steel filter, mesh 110µ (without pressure and vacuum gauge) P = auxiliary pressure port Coil type F = F84 coil with connector plug M = M8 coil with flexible metal conduit 5- Technical specifications...

7- Diagrams Nozzle capacity Power consumption Pressure regulation Return Suction Vacuum gauge 8 Pressure gauge 9 Nozzle port 10 Solenoid valve 11 Auxiliary pressure port Printed in Italy - DE112/0404

To convert the DELTA fuel unit from the single pipe version to the two pipe version, do the following: a) Using a 19 mm wrench, remove the 1/4" plug from return port (Fig. 1). b) Located inside the return plug is the by-pass plug. Remove it with a 4 mm Allen wrench (Fig.2). (Fig. 3). c) Insert and screw the by-pass plug in the return port To convert the DELTA fuel unit from the two pipe version to the single pipe version, do the following: d) Using a 4 mm Allen wrench, unscrew the by-pass plug from the return port (Fig. 3). e) Insert and screw a 1/4" plug into the return port (Fig. 1). In the...

Installation and Service Instructions 10- Installation and Maintenance 12- Nozzle Cut-Off Test 1. Make sure that the by-pass plug is not used in a single pipe installation, because the fuel unit will not function properly and damage to the pump and burner motor could result. 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...