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171 505 46  09-01

Two pipe installation

One pipe installation

Oil under

pressure

Oil under 

suction

By-passed 

oil returned 

to tank,or 

to suction

INSTRUCTIONS PUMP TYPE SUNTEC A2L 65C  -  75C

Pump operating principle for

A2L 65C  -  75C

The 

SUNTEC A2L

 oil pump has two 

nozzle outlets. It incorporates two 

blocking solenoid valves with in-line-

cut-off function, one for each nozzle 

outlet.

The gear set draws oil from the tank 

through the built-in fi lter and transfers 

it to the nozzle line via the cut-off so-

lenoid valves. A pressure regulating 

valve is used to dump all oil which is 

not required at the nozzle.

In one-pipe operation, the oil which 

does not go through the nozzle lines is 

returned directly to the gear inlet and 

the suction line fl ow is equal to the 

sum of the 2 nozzle fl ows. In two-pipe 

operation, the by-pass plug must be 

fi tted in the return port, which ensures  

that the oil dumped by the regulating 

valve is returned to the tank and the 

suction line fl ow is equal to the gear 

set capacity.

Bleed

Bleeding in two-pipe operation is au-

tomatic: it is assured by a bleed fl at 

on the piston. In one-pipe operation, 

a high pressure connection must be 

loosened until the air is evacuated 

from the system.

Cut-Off

The solenoid valves of the A2L pump 

are of the "normally closed" type and 

are situated in the nozzle lines. This 

design ensures extremely fast res-

ponse and the switching can be sel-

ected according to the burner opera-

ting sequence and is independant of 

motor speed.

When the solenoids are non-activated, 

the valves are closed and all oil 

pressurised by the gear set passes 

through the regulator to suction or to 

the return line, depending upon pipe 

arrangement.

As soon as the solenoids are activat-

ed, oil passes to the nozzle lines at 

the pressure set by the pressure 

regulating valve.

A2L

 C

XX

Shaft rotation and nozzle

location seen from shaft end 

Gear set capacity

A2L: 2 nozzle outlets

Exchange of fi lter

Mounting/dismounting return plug

One pipe system

Two pipe system

Solenoid valve 2 (NC) closed

Solenoid valve 2 

(NC) open

Solenoid valve 1 

(NC) open

To nozzle 2

To nozzle 1

Pressure 

gauge port

Pressure 

gauge port

Shaft seal

By-pass 

plug

Return

Suction

By-pass plug

removed

Solenoid valve 1 (NC) closed

Gear set

Vacuum gauge port

 Pressure adjustment

Return 

plugged

Back to suction

Summary of Contents for B30A2.2H

Page 1: ...Providing sustainable energy solutions worldwide 178 066 52 1 2016 04 18 Installation and maintenance instruction B30A2 2H B30A2 2HL...

Page 2: ......

Page 3: ...Cover inspection glass 10 Switch I II 11 Switch I 0 12 Fan wheel 13 Motor 14 Nozzle assembly adjustment 15 Blast tube 16 Photo cell 17 Adjustment device 18 Indication air damper 19 Connecting pipe St...

Page 4: ...range and nozzles recommended The net calori c value of 11 86 kWh kg for light oil has been used 188 415 B 372 108 108 220 303 281 160 190 108 35 Recommended nozzle Because of different boiler types e...

Page 5: ...e an optimum adjust ment is obtained If larger nozzles are used the preadjustment of both the air volume and the nozzle assembly must be increased A whistling sound may be heard which can be eliminate...

Page 6: ...e an optimum adjust ment is obtained If larger nozzles are used the preadjustment of both the air volume and the nozzle assembly must be increased A whistling sound may be heard which can be eliminate...

Page 7: ...ge Set the operating switch S2 on low capacity I Loosen the screw A and turn the damper to the position wan ted Tighten the screw A again Second stage Set the operating switch S2 on high capacity II S...

Page 8: ...at the main switch and cut off the oil supply Open the cover and disconnect the connecting pipes by loosening screw A and nut B Service of burner head 171 305 47 09 01 1 Loosen or swing out the burne...

Page 9: ...l burner control LMO24 255 Wiring diagram ELECTRIC EQUIPMENT 1 3 1N 50 60 Hz 230 V If the boiler is not equipped with wired contacts connect the enclosed contacts to terminals X4 and X6 in accordance...

Page 10: ...on till the prepurge period expires and the solenoid valve 1 opens 2 2 Solenoid valve 1 opens Oil mist is formed and ignited The photocell indicates a ame 3 The safety time expires a If no ame is est...

Page 11: ...the problem by pressing and holding the reset button for 3 seconds The number of ashes below is repeated with a pause in between 2 ashes No ame signal when safety time expires 4 ashes False light dur...

Page 12: ...length in metres at a nozzle capacity of 9 5 Gph Max permissible pres sure at the suction and pressure side is 2 0 bar Components 1 Nozzle outlet G 1 8 Stage 2 2 Pressure gauge port G 1 8 3 Nozzle out...

Page 13: ...it is assured by a bleed at on the piston In one pipe operation a high pressure connection must be loosened until the air is evacuated from the system Cut Off The solenoid valves of the A2L pump are o...

Page 14: ...93 9 71 115 99 10 24 121 104 10 73 127 109 3 00 9 98 118 102 10 59 126 108 11 16 132 114 11 71 139 119 3 50 11 65 138 119 12 35 146 126 13 03 154 133 13 66 162 139 4 00 13 31 158 136 14 12 167 144 14...

Page 15: ...1 21 133 114 11 67 138 119 12 11 144 123 12 53 148 128 3 00 12 23 145 125 12 73 151 130 13 21 157 135 13 67 162 139 3 50 14 27 169 145 14 85 176 151 15 42 183 157 15 95 189 163 4 00 16 31 193 166 16 9...

Page 16: ...of magnetic valve Burner fails to start Lamp not lit Motor runs Burner runs to lockout Fuse has blown Appliance thermostat has not reset Appliance overheat device has operated Control relay or photoce...

Page 17: ...sont conformes aux normes et aux documents normatifs suivants et satisfont aux crit res applicables des directives CE suivantes Dokument EN 267 EN 60335 EU direktiv EU Directives EU Direktiven CE suiv...

Page 18: ...he burner will not start Press the reset button on the relay Check that the thermostats are correctly adjusted Don t forget the room thermostat check that any fusesare intact and main switch is on If...

Page 19: ......

Page 20: ...Enertech AB P O Box 309 SE 341 26 Ljungby www bentone se www bentone com...

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