Enertech B20KAV Technical specifications

1171 615 33 05-01
Installation- and maintenance instruction
B20KAV/KV

17803508

DESCRIPTION
COMPONENTS
1. Air intake
2. Scale, nozzle assembly
3. Nozzle assembly adjustment
4. Test nipple
5. Ignition cables
6. Schrouded disc
7. Blast tube
8. Ignitionelectrodes
16. Solenoid valve
17. Motor
18. Indicating lamp, preheater
19. Photoresistor
20. Fan wheel
21. Air damper, adjustment
22. Scale, air regulation
9. Preheater
10. Electric connection
11. Ignitiontransformer
12. Suspension hole
13. Control box
14. Reset button
15. Pump
171 205 27 94-01

Burner tube Lengthof FlangeA FlangeB FlangeC
burnertube MeasureB MeasureB MeasureB
KAV 147 122 117 131
KAV 224 199 194 208
TECHNICAL DATA
DIMENSIONS
OUTPUT RANGE AND NOZZLES RECOMMENDED
Burner tube Oil capacity Capacity Recommended Recommended
Nozzle Pumppressure
kg/h kW Mcal/h Angle Size Type Bar
KAV 2,0-6,0 24-71 20-61 60° 0,55-1,75 S or R 10
The net calorific value of 11,86 kWh/kg for light oil has been used.
Flange A
Flange B
Flange C
171 215 57 99-01
RECOMMENDED NOZZLE
Because of different boiler types
existing on the market, with varying
combustionchamberdesigns,itisnot
Note that the spray angle and the
spray pattern change with the pump
pressure.
possibletostateadefinitesprayangle
or spray pattern.
12 12
ø89
B
244
172 77
148 296
ø89,5 21
10,5
130-150
ø89,5 26
ø89,5 12
130-150
ELECTRODEADJUSTMENT
2,7-3,3
8,0-9,0
0,5-1,5
130-150

Burner tube Lengthof FlangeA FlangeB FlangeC
burner tube MeasureB MeasureB MeasureB
KV 147 122 117 131
KV 224 199 194 208
TECHNICAL DATA
DIMENSIONS
OUTPUT RANGE AND NOZZLES RECOMMENDED
Burner tube Oil capacity Capacity Recommended Recommended
Nozzle Pumppressure
kg/h kW Mcal/h Angle Size Type Bar
KV 4,3-10,0 51-119 44-102 60° 1,25-2,50 S or R 10
The net calorific value of 11,86 kWh/kg for light oil has been used.
Flange A
Flange B
Flange C
171 215 58 99-01
RECOMMENDED NOZZLE
Because of different boiler types
existing on the market, with varying
combustionchamberdesigns,itisnot
Note that the spray angle and the
spray pattern change with the pump
pressure.
possibletostateadefinitesprayangle
or spray pattern.
12 12
ø89
B
244
172 77
148 296
ø89,5 21
10,5
130-150
ø89,5 26
130-150
ø89,5 12
130-150
2,3-3,1 0,5-1,5
10,0-11,0
ELECTRODEADJUSTMENT

17190001 95-01
K, KV
KA, KAV

BASICSETTINGS
Pumppressure:10bar.
Thefanpressureismeasuredinthetest
nipple (se under Description
Componentspos.4)withaU-tubeora
suitablepressuregauge.
AIRADJUSTMENT
On all burners the air adjustment can
be made with or without the cover
fitted. Final fine adjustment must be
madewiththecoveron.
MAINTENANCE
Theboiler/burnershouldbeexamined
regularlyforanysignsofmalfunctionor
oilleakage.
FASTENINGOFTHEBURNERTO
THEBOILER(FLANGE)
GENERAL INSTRUCTIONS
This increases the efficiency but also
theriskofcondensationinthechimney.
Theriskincreasesiftheareaofthechimney
flueistoo large.Thetemperatureofthe
fluegasesshouldexceed60°Cmeasu-
red 0,5 metres from the chimney top.
Measurestoraisethetemperature:
Insulate the chimney in cold attics
Install a tube in the chimney
Install a draught regulator (dilutes the
flue gases during operation and dries
themup duringstandstill)
Increasetheoilquantity
Raisethefluegastemperaturebyremo-
vingturbulators,ifany,inthe boiler.
INSTRUCTIONSFORUSE
The end user of the burner should be
instructedabouttheoperationandsafety
featuresoftheburner.
He should also be made aware of the
importanceoftheareaaroundtheboiler/
burner being kept free of combustible
material.
PUMPADJUSTMENT
Seeseparatedescription.
AIR ADJUSTMENT ADJUSTMENTOFNOZZLE
ASSEMBLY
GENERALRULES
Theinstallationofanoilburnershouldbe
carried out in accordance with local
regulations. The installer of the burner
mustthereforebeawareofallregulations
relatingtooil and combustion.
Onlyoilsuitablefortheburnershouldbe
used and then in combination with a
suitable oil filter before the oil pump of
theburner.
If the burner is replacing an existing
burner make sure that the oil filter is
replaced or cleaned. The installation
must only be undertaken by experien-
ced personnel. Care should be taken
by the installer to ensure that no
electricalcablesorfuel/gaspipesare
trappedordamagedduringinstallation
orservice/maintenance.
INSTALLATIONINSTRUCTIONS
General installation instructions ac-
companytheburnerandshouldbeleftin
aprominentplaceadjacenttotheburner.
ADJUSTMENTOFBURNER
Theburnerisfromthefactorypre-setto
an average value that must then be
adjustedtothe boiler in question.
Allburneradjustmentsmustbemade
inaccordancewithboilermanufacturers
instructions.These must include the
checking of flue gas temperatures,
averagewatertemperatureandCO2or
O2concentration.
To adjust the combustion device, start
by increasing the air volume and the
nozzleassemblysomewhat.Whenthe
burner starts it is burning with excess
air and smoke number 0. Reduce the
nozzleassemblyadjustmentuntil soot
occurs, and then increase the
adjustmenttomakethesootdisappear
again.Thenthevolumeofairisreduced
untilsootoccursandincreasedagainto
reachacombustionfreeof soot.
By this procedure an optimum adjust-
ment is obtained. If larger nozzles are
used the preadjustment of both the air
volumeandthenozzleassemblymust
beincreased.
Awhistlingsound may beheardwhich
canbeeliminatedorreducedasfollows:
Increase the nozzle assembly adjust-
mentsomewhat.TheCO2-contentand
consequentlytheairvolumewillthenbe
reduced.
CONDENSATIONINCHIMNEY
A modern burner works with less ex-
cess air and often also with smaller
nozzlesthanoldermodels. 17130559 06-01

MAINTENANCE OF OIL BURNER
Warning: Before doing any service switch off power at the main switch and cut off the oil supply.
SERVICE OF BURNER HEAD
(alt. A)
1. Remove the cover.
2. Withdraw the photo resistor.
3. Loosen the connecting pipe.
4. Loosen two fixing screws of the
nozzle assembly cover.
5. Retract the nozzle assembly so
far that the ignition cables can be
removed from the ignition
electrodes (if applicable, loosen
also the preheater cable).
6. Remove the nozzle assembly.
171 305 61 94-01
SERVICE OF BURNER HEAD
(alt. B)
1. Slackenretainingscrews.
2. Removetheburner.
3. Loosen the two blast tube
retainingscrews.
4. Turnthetubetotherightand remove.
SUSPENSION OF BURNER
A. Pin for suspension of burner.
B. Hole for suspension (also avail-
able on the right side).
CLEANING OF FAN WHEEL
Loosen four fixing screws.
Remove the fan housing half.

ELECTRIC EQUIPMENT
OILBURNERCONTROL:LOA21.../LOA24...
WITHPREHEATER
OUTERELECTRICALCONNECTION
X1
X2
FUNCTION
1. Switch on operating switch and twin thermostat
Voltageisappliedtothepreheaterandthepreheatingperiodstarts.This
periodlasts till the operatingtemperature of the oilhas been reached
andthepreheaterthermostatcloses(2).
2. Preheaterthermostatcloses
Theburnermotorstarts,anignitionsparkisformed,theprepurge goes
ontilltheprepurgeperiodexpiresandthesolenoidvalveopens(3).
3. Solenoidvalveopens
Oil mist is formed and ignited. The photocell indicates a flame.
(1) Theignitionsparkgoes out 15 s. after flameindication(LOA24.171...).
(2) The ignition spark goes out 2 s. after flame indication when the ignition
transformerisconnectedtoterminal7(LOA24.173...).
4. Thesafety time expires
a. If no flame is established before this time limit the control cuts out.
b. If for some reasons the flame disappears after this time limit, the
burner will make an attempt to re-start.
4-5. Operatingposition
Ifthe burner operation is interruptedbymeans of the mainswitchor the
thermostat, a new start takes place when the conditions in accordance
withpoint1arefulfilled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the burner
re-starts.
Post-ignition
(2) Ifapost-ignitionof15s.iswanted,movetheignitiontransformerfrom
terminal7toterminal6(LOA24.173...).
LISTOFCOMPONENTS
A1 Oilburnercontrol P1 Timemeter(optional)
A2 Twinthermostat R1 Photoresistor
E1 Preheater S3 Mainswitch
F1 Fuse, max. 10A T1 Ignitiontransformer
H1 Alarmlamp Y1 Solenoidvalve
H2 Signallamp(optional) X1 Plug-incontact,burner
M1 Burnermotor X2 Plug-incontact,boiler
Thecoloursofthepreheatercable: A Blue B Brown C Black
Mains connection and fuses in accordance with local regulations.
TECHNICALDATA
Pre-ignitiontime: 13s
Pre-purgetime: 13 s
(1) Post-ignitiontime: 15 s
(2) Post-ignitiontime: 2 s
Safety lock-out time: 10s
Resettime after lockout: ≈50 s
Reactiontimeonflamefailure: max. 1 s
Ambienttemperature: from-20 to + 60°C
Min.currentwithflameestablished: 65 µ A
Max. photo current at start: 5 µ A
Enclosure: IP40
(UndervoltageproofonlyLOA24...)
CONTROLOFPHOTOCURRENT
Currentthroughphotounitismeasuredwithad.c.ammeter(amovingcoilinstrument
connectedinseries withthephotounit).
17141521 04-01
WIRINGDIAGRAM
* Ifthereisno plug-in contact (X2)ontheboiler,
connect to the contact enclosed. In case the
twinthermostatisinserieson incomingphase
L1,aloopbetweenthe terminals T1 and T2 is
necessary.
*
(1)(2)

INSTRUCTIONS PUMP TYPE DANFOSS BFP41
COMPONENTS
1.Nozzle port G 1/8"
2.Pressuregaugeport
3.Pressureadjustment,4mmallenkey
4.Cartridgefilter
5.Vacuum gaugeport G 1/8"
6.Return lineG 1/4"
7.Suction line G 1/4"
8.Returnplug
TECHNICAL DATA
Viscosity range: 1,3-12,0 mm2/s
Pressure range: 7-15 bar
Oil temperature: -10 to +70°C
SUCTION LINE TABLES
The suction line tables consist of
theoretically calculated values where
the pipe dimensions and oil velocity
havebeenmatchedsothatturbulences
will not occur. Such turbulences will
resultinincreasedpressurelossesand
inacousticnoisein the pipesystem.In
addition to drawn copper piping a pipe
system usually comprises 4 elbows, a
non-return valve, a cut-off valve and
an external oil filter.
Thesumoftheseindividualresistances
is so insignificant that they can be
disregarded.Thetablesdonotinclude
any lengths exceeding 100 m as
experience shows that longer lengths
are not needed.
The tables apply to a standard fuel oil
ofnormalcommercialqualityaccording
tocurrentstandards.Oncommissioning
with an empty tube system the oil
pump should not be run without oil for
morethan5min.(aconditionisthatthe
pump is being lubricated during
operation).
The tables state the total suction line
lengthinmetresatanozzlecapacityof
2,5kg/h. Max. permissible pressureat
the suction and pressure side is 2,0
bar.
PURGING
On 1-pipe systems it is necessary to
purge the pump. On 2-pipe systems
purgingisautomaticthroughthereturn
line.
Height Pipe diameter
H ø6 mm ø8 mm ø10 mm
mmmm
4,0 33 100 100
3,5 31 98 100
3,0 29 91 100
2,5 27 85 100
2,0 25 79 100
1,5 23 72 100
1,0 21 66 100
0,5 19 60 92
Two-pipe system
0 17 53 100
-0,5 15 47 100
-1,0 13 41 99
-1,5 11 34 84
-2,0 9 28 68
-2,5 7 22 53
-3,0 5 15 37
-3,5 3 9 22
4,0 1 3 6
Two-pipe system
Height Pipe diameter
H ø6 mm ø8 mm ø10 mm
mmmm
Height Pipe diameter
H ø4 mm ø5 mm ø6 mm
mmmm
Height Pipe diameter
H ø4 mm ø5 mm ø6 mm
mmmm
4,0 51 100 100
3,5 45 100 100
3,0 38 94 100
2,5 32 78 100
2,0 26 62 100
1,5 19 47 97
1,0 13 31 65
0,5 6 16 32
1-pipe system 1-pipe system
With an underlying tank a 1-pipe-
system is not recommended
171 505 07 96-01
H
H

FUNCTIONDANFOSS BFP41
When the oil pump is started, oil is
drawnfromthesuctionconnection(S)
throughthefilter(H)tothesuctionside
ofthegearwheel(C).
Thegearwheelthenpumpsoil to the
pressureside and theoilis put under
pressure.
The pressure is controlled and kept
constant at the set value by the
regulatingvalve(P1)withthediaphragm
(D).
The regulating valve (P1) distributes
the oil quantity supplied by the gear
set (C) between the nozzle port (E)
andthe return sideof the pump(R).
Theoilquantityutilizedisdetermined
by the set pressure on the regulating
valve(P1)andthesizeoftheoilnozzle
in the nozzle line.
Thevalve(P1)functionsinthefollowing
way:
- Whentheopeningpressurehasbeen
reached,thepassage to the return
side opens.
- Thediaphragmandthespringkeep
the pump pressure constant at set
value.
- Ifthepumpisoverloaded,i.e.ifyou
try to get out more oil than the gear
REPLACEMENTOFCARTRIDGE
FILTER MOUNTING/DISMOUNTING
RETURNPLUG
17150508 00-01
setcansupplyunderexistingcircum-
stances,theoilpressurefallsbelow
thesetvalueandthevalvecloses
againstthereturnside(R)bymeans
ofthediaphragm(D)andgoesinto
startingposition.
Thiscanberemedied by:
- Reducingthepumppressure.
- Reducingtheoilquantitysupplied
by using a smaller nozzle.
- Usingapumpwithalargercapacity.
BURNERWITHPREHEATING
Considerthattheoilquantityisreduced
atpreheatingby5-20%dependingon.
- Rise in temperature at the nozzle
- Nozzledesign
- Capacity (high capacity - small
difference)
HOWTOREMOVECARTRIDGE
FILTERFROMPLUG
Unscrewthecartridgefilterpluginthe
cover by means of a 4 mm allen key
and withdraw the cartridge filter. If
necessary,putascrewdriverbetween
the cartridge filter and the plug and
turnthecartridgefiltercarefullyuntilit
comes off. Reject the cartridge filter
and replace it by a new one. Press it
ontotheplug.EnsurethattheO-ring
is not damaged. Then fit the new
cartridge filter to the pump.
One pipe system
Twopipesystem
R
S
E
NC
A
G
H
V
P1
P
D
C

NOZZLETABLE Pump pressure bar
171 505 44 00-01
The table applies to oil with a viscosity of 4,4 mm2/s (cSt) with density 830 kg/m3.
BURNER WITH PREHEATER Considerthaton preheatingtheoilquantityisreducedby5-20%depending on. - Rise in temperature at the nozzle - Designofnozzle - Capacity(highcapacity-smalldifference)
Gph 8 9 10 11 12 13 14 15
kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h
0,40 1,33 16 13 1,41 17 14 1,49 18 15 1,56 18 16 1,63 19 17 1,70 20 17 1,76 21 18 1,82 21 18
0,50 1,66 20 17 1,76 21 18 1,86 22 19 1,95 23 20 2,04 24 21 2,12 25 22 2,20 26 22 2,28 27 23 0,60 2,00 24 20 2,12 25 22 2,23 26 23 2,34 28 24 2,45 29 25 2,55 30 26 2,64 31 27 2,73 32 28 0,65 2,16 26 22 2,29 27 23 2,42 29 25 2,54 30 26 2,65 31 27 2,75 33 28 2,86 34 29 2,96 35 30 0,75 2,49 29 25 2,65 31 27 2,79 33 28 2,93 35 30 3,08 36 31 3,18 38 32 3,30 39 34 3,42 40 35 0,85 2,83 33 29 3,00 36 31 3,16 37 32 3,32 39 34 3,47 41 35 3,61 43 37 3,74 44 38 3,87 46 39 1,00 3,33 39 34 3,53 42 36 3,72 44 38 3,90 46 40 4,08 48 42 4,24 50 43 4,40 52 45 4,56 54 46 1,10 3,66 43 37 3,88 46 39 4,09 48 42 4,29 51 44 4,48 53 46 4,67 55 48 4,84 57 49 5,01 59 51 1,20 3,99 47 41 4,24 50 43 4,47 53 46 4,68 55 48 4,89 58 50 5,09 60 52 5,29 63 54 5,47 65 56 1,25 4,16 49 42 4,40 52 45 4,65 55 47 4,88 58 50 5,10 60 52 5,30 63 54 5,51 65 56 5,70 68 58 1,35 4,49 53 46 4,76 56 48 5,02 59 51 5,27 62 54 5,50 65 56 5,73 68 58 5,95 70 61 6,15 73 63 1,50 4,98 59 51 5,29 63 54 5,58 66 57 5,85 69 60 6,11 72 62 6,36 75 65 6,60 78 67 6,83 81 70 1,65 5,49 65 56 5,82 69 59 6,14 73 63 6,44 76 66 6,73 80 69 7,00 83 71 7,27 86 74 7,52 89 77 1,75 5,82 69 59 6,18 73 63 6,51 77 66 6,83 81 70 7,14 85 73 7,42 88 76 7,71 91 79 7,97 94 81 2,00 6,65 79 68 7,06 84 72 7,45 88 76 7,81 93 80 8,18 97 83 8,49 101 86 8,81 104 90 9,12 108 93 2,25 7,49 89 76 7,94 94 81 8,38 99 85 8,78 104 89 9,18 109 94 9,55 113 97 9,91 117 101 10,26 122 105 2,50 8,32 99 85 8,82 105 90 9,31 110 95 9,76 116 99 10,19 121 104 10,61 126 108 11,01 130 112 11,39 135 116 2,75 9,15 108 93 9,71 115 99 10,24 121 104 10,73 127 109 11,21 133 114 11,67 138 119 12,11 144 123 12,53 148 128 3,00 9,98 118 102 10,59 126 108 11,16 132 114 11,71 139 119 12,23 145 125 12,73 151 130 13,21 157 135 13,67 162 139 3,50 11,65 138 119 12,35 146 126 13,03 154 133 13,66 162 139 14,27 169 145 14,85 176 151 15,42 183 157 15,95 189 163 4,00 13,31 158 136 14,12 167 144 14,89 176 152 15,62 185 159 16,31 193 166 16,97 201 173 17,62 209 180 18,23 216 186 4,50 14,97 177 153 15,88 188 162 16,75 198 171 17,57 208 179 18,35 217 187 19,10 226 195 19,82 235 202 20,51 243 209 5,00 16,64 197 170 17,65 209 180 18,62 221 190 19,52 231 199 20,39 242 208 21,22 251 216 22,03 261 225 22,79 270 232 5,50 18,30 217 187 19,42 230 198 20,48 243 209 21,47 255 219 22,43 266 229 23,34 277 238 24,23 287 247 25,07 297 256 6,00 19,97 237 204 21,18 251 216 22,34 265 228 23,42 278 239 24,47 290 249 25,46 302 260 26,43 313 269 27,49 326 280 6,50 21,63 256 220 22,94 272 234 24,20 287 247 25,37 301 259 26,51 314 270 27,58 327 281 28,63 339 292 29,63 351 302 7,00 23,29 276 237 24,71 293 252 26,06 309 266 27,33 324 279 28,55 338 291 29,70 352 303 30,84 366 314 31,91 378 325 7,50 24,96 296 254 26,47 314 270 27,92 331 285 29,28 347 298 30,59 363 312 31,83 377 324 33,04 392 337 34,19 405 349 8,00 26,62 316 271 28,24 335 288 29,79 353 304 31,23 370 318 32,63 387 333 33,95 403 346 35,25 418 359 36,47 432 372 8,50 28,28 335 288 30,00 356 306 31,65 375 323 33,18 393 338 34,66 411 353 36,07 428 368 37,45 444 382 38,74 459 395 9,00 29,95 355 305 31,77 377 324 33,59 398 342 35,14 417 358 36,71 435 374 38,19 453 389 39,65 470 404 41,02 486 418

DELAYED IGNITION, BURNERS STARTS VIOLENTLY
BURNER FAILS TO START AFTER NORMAL OPERATION
Remedies
Situation Possible causes
BURNER FAILS TO START
Check ignition transformer. Check electrode
gap and porcelain
Reset overheat device. Find reason for its
operation and rectify
Check or replace fuse if necessary. Check
reason for failure
Check operation of magnetic valve
Check that photocell is not seeing ambient light
Motor runs Flameinstability
Burner pre-purges
Burner locks out
Motor runs
Photocell failed
Control faulty
Confirm with new photocell
Confirm with new control. (NB. it is advisable to
change the photocell if also changing control)
Burner pre-purges
Burner locks out No oil
Check that H.T. leads are sound and are not
arcing other than at electrode gap
No flame occurs
Check oil supply to burner - check that pump
is not airlocked
Burner fails to start
Lamp not lit
Fuse has blown
Appliance thermostat has not reset
Appliance overheat device has operated
Control relay or photocell defective
Adjust thermostat
Check by replacement
Motor runs
Burner runs to lockout
No oil being delivered
Excessive flue draught is preventing
flame establishment
No spark
Check that tank, oil lines, fire valve, pump and
nozzle are all in good order
Rectify condition
Excessive draught Adjust the burner
Burner pulsates on start-up Nozzle partly blocked
Oil pressure too low
Flue blocked or damaged
Fan slipping on shaft
Pump coupling loose or worn
Replace nozzle
Check and adjust
Check and rectify
Check and retighten
Delayed ignition Check the electrode adjustment, see diagram
Check electrodes for damage
Check H.T. leads for damage and disconnection
Check and replace
Incorrect head settings
Low oil pressure
Photocell not seeing light
Excess air
Burner pulsates on start-up
only with hot flue
Burner starts violently
False light
No spark
Check oil pressure
Check that photocell is clean and unobstructed
Check nozzle to burner head dimension and
electrode position
Adjust air damper
Flame occurs
17191501 08-01
FAULT LOCATION

171905 07 08-01
DECLARATION OF CONFORMITY
Manufacturer: Enertech AB, Bentone Division
Streetaddress: Näsvägen
SE-34134Ljungby
Address: P.O. Box 309
SE-34126Ljungby
Sweden
Product: Oilburner
Type: BF1, B 1, B 2, B 9, B 10, B 11, B 20, B 30, B 40, B 45,
B 50, B 55, B 60, B 65, B 70, B 80, ST 97, ST 108,
ST 120, ST133, ST 146
CertfikatTÜVSüddeutschland
Certifikat Nr Burner
XXXXXXXX BF1
0111110535004 B1
0207110535005B2
021198p15001 ST97, ST108,ST120,ST133,ST146
02119815002 B9, B10, B11
02119815003 B20, B30, B40, B45
02119815004 B50, B60, B70, B80
040588622001 B55
040588622002 B65
EnertechABdeclares under sole responsibilitythatthe above mentioned
product is in conformity with the following standards or other normative
documents.
Document: EN 267
andfollowsthe provisionsofapplicablepartsinthefollowing EUDirectives:
89/336/EEC Electromagneticcompatibility
73/23/EEC Low-voltagedirective
89/392/EEC Machinerydirective
92/42/EEC Efficiency directive
Inthatthe burner conformstotheabovementioned standardsit is awarded
the CE mark.
EnertechAB, Bentone Division is quality certified according to SS-EN
ISO9001:2000
Ljungby080115
ENERTECHAB
Sven-OlovLövgren
.......................................................