ACV BG 2000-MV Page 11 Installation Manual Download

Page: 11 / 14

BURNER DISMANTLING PROCEDURE

For safety reasons it is essential that you isolate the
power supply and the gas supply valve before carrying
out any work on the burner.

Dismantling the burner

Remove the burner cover.

Disconnect the gas connector and the electrical plugs of the
burner.

Disconnect the air supply pipe from the venturi.

Take off the burner chamber plate by undoing the two retaining
nuts.

Burner re-assembly

The burner is re-assembled in the reverse order of dismantling

(Step 4 to Step 1).

SETUP PROCEDURE IN THE EVENT OF FAN
REPLACEMENT

Fan speed for burner BG 2000-SV:

(Fig. 15)

• Remove the green plug on the front of the fan to gain access to the

adjuster screw on the potentiometer (A).

BURNER CHARACTERISTICS

1. Gas flow adjuster screw
2. Offset pressure measuring point
3. Upstream gas pressure measuring point
4. Offset adjuster screw cover

PROCEDURE FOR SETTING THE % OF CO

• Measure the burner combustion with an electronic flue gas analyser.

• Adjust the % of CO

to the figure shown in the table of setting

parameters on Page 15 by turning the gas flow adjuster screw on
the gas valve. (Fig. 16)

Turn counter-clockwise (more gas)

➠

increases the % of CO

Turn clockwise (less gas)

➠

reduces the % of CO

The offset (4) is set at the factory and requires no
adjustment. Nevertheless ACV recommends that you
check this setting.

(Refer to the table of setting parameters)

You should contact your installer should you find any
significant deviation.

• Measure the speed of the impeller that is mounted on the motor

shaft. Adjust the speed of the fan according to the parameters
(Start, Min., Max.) listed in the table of setting parameters on Page
15 by turning the potentiometer screw (counter-clockwise to reduce
the fan speed and clockwise to increase it).

Fan speed for burner BG 2000-MV:

If the fan of a BG 2000-MV burner is replaced, the fan's speed is
controlled directly by the PWM connector which connects the fan to
the p.c.b.

The potentiometers on the p.c.b. (Start, Min. and Max.)
must be adjusted by an engineer approved by ACV.

Fig. 15

Fig. 16

Summary of Contents for BG 2000-MV

Page 1: ...B and C only apply to type B23 connectors Base The base on which the boiler will be mounted must be made from non combustible materials CHIMNEY CONNECTIONS IMPORTANT The boiler must be installed by a qualified engineer in accordance with the local standards and codes of practice The diameter of the chimney must not be less than the diameter of the boiler s chimney reducer Fig 3 Boiler ventilation ...

Page 2: ...pipe L 500 mm 1 18 1 82 Straight pipe L 1000 mm 2 55 2 3 Straight pipe L 2000 mm 5 1 4 6 90 pipe bend 4 32 6 45 pipe bend 2 75 3 1 30 pipe bend 1 67 1 7 5 pipe bend 0 69 0 76 Vertical terminal 5 4 3 53 Horizontal terminal 5 5 3 53 Condensation drain 2 06 1 53 1000 mm 1 0 0 0 m m 2000 mm 2000 mm This table is based on the equipment offered by ACV and connot be applied generally Sample calculation T...

Page 3: ...old water supply tap 8 Drawoff tap 9 Drain cock 10 Air vent 11 Isolating valve 8 Fig 8 Heating system layout Fig 9 Hot water system layout INSTALLATION 9 5 6 2 1 3 8 8 4 7 7 3 10 11 8 4 5 6 9 5 2 1 IMPORTANT As a safety measure we strongly advise the installation of a thermostatic mixer to prevent any risk of burning to persons ACV kit water ACV can supply an optional pre assembled water kit This ...

Page 4: ...B3 B2 P1 Y1 Y2 N B5 B9 B3 B2 KIT 2 ACV 13 00 Standard This basic kit is used to control the hot water circuit outlet temperature as a function of ambient conditions It comprises a temperature controller with analog clock a surface mounted primary water temperature sensor 30 130 C an outdoor sensor 30 50 C a servomotor SQY 349 230 V 3 pin and an intermediate socket Please contact your installer for...

Page 5: ... Wiring for the SV boiler Fig 10 1 Control thermostat 60 90 C 2 Thermal reset high limit thermostat 95 C 3 Manual reset high limit thermostat 103 C max 4 Main switch 5 Reset 6 Burner shutdown indicator lamp 7 Summer Winter switch 8 Power supply to boiler 9 Room thermostat optional 10 Heating pump connection 11 Boiler electrical supply connection 6 pin plug 12 Burner connection 7 pin plug Wiring fo...

Page 6: ...p EI 30 15 5 BV 030 7308 OS 6 5 4 3 2 1 3 4 6 7 1 2 3 4 P4 P2 P3 GND PWM 12 V HALL S3 S3 T2 T2 T1 T1 N N L1 L1 1x6 1x3 1x4 1x5 1x3 1x7 1 2 C Bk B B Y Gr Br Gr Y G G Br Y Gr B Or Bk Bk B B Bk Br Y Gr B R G G Y Y Y Or Br R B G Y Gr R B Gr Y Gr Br B Gr G B R Bk Gr B Y Gr Br Bk Br Gr B W B Bk Br Gr W B Y G B BG 2000 MV Delta Performance MV 12 12 2 1 6 5 7 4 8 10 9 3 11 13 14 15 16 Start Min Max Delta ...

Page 7: ...s output is constantly adjusted to suit the fluctuating demand for heat thus optimising operating efficiency BG 2000 SV and MV burners are preset in our factory for use with natural gas equivalent to G20 CONVERSION TO PROPANE refer to the conversion instructions Prohibited in Belgium Conversion kit supplied with the boiler comprises Orifice s Propane rating plate s Self adhesive settings label Con...

Page 8: ...BG 2000 MV Burner chamber plate Flame inspection window Ignition cable Ionisation cable Control monitoring relay Burner chamber plate Flame inspection window Box containing the p c b Ignition cable Ionisation cable PWM connector Control monitoring relay ...

Page 9: ...t monitors the actual presence of a flame when the gas valve is open it measures the ionisation current Starting sequence Fig 13 The fan starts up when the boiler thermostat potentiometer detects a demand for heat After a 15 second pre purge the gas valve opens simultaneously with the ignition Provided an ionisation current is detected inside the first 5 seconds combustion continues normally until...

Page 10: ...3 10 3 Gas G20 20 mbar I 2E S B I 2 Er I 2H I 2ELL I 2E Flow m3 h 3 7 5 3 1 06 3 7 1 6 5 3 Gas G25 20 mbar I 2ELL 25 mbar I 2L Flow m3 h 4 31 6 15 1 24 4 31 1 85 6 15 Gas G31 30 37 50 mbar I 3P Flow m3 h 1 43 2 05 0 41 1 43 0 61 2 05 Burner chamber pressure mbar 0 2 0 2 0 2 0 2 Net T of combusted gases C 140 140 80 140 60 140 BE FR AT DK ES UK IT PT IE SE NL LU DE I 2Er X I 2E S B X I 2H X X X X X...

Page 11: ...r combustion with an electronic flue gas analyser Adjust the of CO2 to the figure shown in the table of setting parameters on Page 15 by turning the gas flow adjuster screw on the gas valve Fig 16 Turn counter clockwise more gas increases the of CO2 Turn clockwise less gas reduces the of CO2 The offset 4 is set at the factory and requires no adjustment Nevertheless ACV recommends that you check th...

Page 12: ...fer to Fig 19 BURNER MAINTENANCE refer to Fig 20 1 After dismantling the burner check the condition of the ignition electrode 1 and ionisation electrode 2 the insulation 3 and the burner chamber plate seal 4 Replace these items if necessary 2 Check the condition of the tube 5 3 Re assemble the burner and check burner ignition 4 Check the gas connection for leaks 5 Check the combustion parameters F...

Page 13: ... x 14 Gas pipe too small x x x 15 Boiler thermostat potentiometer faulty x x x 16 The electrical system is not earthed properly x x 17 System fuses have blown x x x 18 System and or boiler not vented properly x x x x 19 Not enough time allowed between large drawoffs x 20 Drawoff flow too fast x 21 Room thermostat faulty or not turned on x x 22 Faulty Summer Winter switch x x x x 23 Main switch is ...

Page 14: ... look for the cause of the problem 18 Properly fill and vent the system and the boiler 19 Adhere to the performance data as indicated by ACV 20 Adhere to the performance data as indicated by ACV 21 Set the thermostat to the required temperature or replace it 22 Replace the Summer Winter switch 23 Replace the main switch 24 Replace the NTC sensor 25 Replace the boiler thermostat potentiometer 26 Ab...

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