Halstead Best db 80 Installation & Servicing Instructions Manual Download Page 26

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SHORT PARTS LIST

Key

G.C. Part No.

Description

No. off

Maker’s Part No.

Main Burner (Aeromatic)

700539

Ignition Electrode

500573

Flame Detection Electrode

500574

Gas Valve (Without Ignition Device)

500569

Ignition Device (For Gas Valve)

500570

Aquastat PCB

600513

Thermistor

500572

Overheat Cut Off Device

500578

Potentiometer / On-Off Switch

550520

Main Burner Injector

700532

Air Pressure Switch

500609

Fan

601007

Knob

300525

Copper Washer

204005

Summary of Contents for Best db 80

Page 1: ...56 EC 0087 AT 5342 SUPPLY PRESSURE 20 mbar 0 0 8 6 TO BE LEFT WITH THE USER FOR USE WITH NATURAL GAS ONLY G20 CAST IRON WALL MOUNTED FAN ASSISTED BOILER B R I T I S H M A D E B O I L E R S INSTALLATI...

Page 2: ...which should be fitted with lockshield valves only Gravity It is recommended that when used on a gravity domestic hot water application a Honeywell C Plus plan or equivalent is fitted to the system to...

Page 3: ...mm 0 25in 6mm 100mm SEE NOTE 6mm 200mm 66mm FLOW RETURN 30mm 62mm 28mm Dia 22mm Dia 600mm 400mm 28mm Dia 22mm Dia 348mm with front panel 691mm 330mm to control knob 205mm GAS COCK 380mm 218mm 61mm 266...

Page 4: ...CT VERTICAL SOCKET 90 ELBOW NON FLANGED STANDARD DUCT 90 ELBOW NON FLANGED EXTENSION DUCT 2 d FLUE WITH 90 BEND TERMINAL DUCT STANDARD DUCT FLANGED ELBOW 90 ELBOW NON FLANGED EXTENSION DUCTS 2 e HORIZ...

Page 5: ...r 3 b Fig 3a Standard flue assembly using either side or rear outlet Flue length L measured from the boiler outlet centre line to the outside wall face max 820mm Maximum wall thickness Wr Rear outlet...

Page 6: ...rd flue assembly Equivalent Length Shown is 3045mm Where Lb is 919mm and Lw is 820mm Lw is measured to the outside wall face Fig 4b As 4a but with one additional extension in length Lb Equivalent Leng...

Page 7: ...valent length shown is 2325mm Where Lh measured from the top of the boiler casing to the centre line of the extra elbow 551mm and length Lw measured from the centre line of the extra elbow to the outs...

Page 8: ...LOADED DIAGRAM Drawing amended 7 05 99 11 11 33 29 31 32 43 21 62 77 19 68 67 76 66 80 81 37 38 39 60 64 63 13 70 69 74 72 34 35 36 46 73 65 49 75 71 49 56 58 55 61 28 44 15 42 41 40 57 50 53 52 54 51...

Page 9: ...T be installed so that the terminal is exposed to the external air 3 1 STATUTORY REQUIREMENTS 3 2 BOILER LOCATION SAFETY INSTALLATION AND USE REGULATIONS 1984 AS AMENDED It is the law that all gas app...

Page 10: ...sed Street elbows must also be used for the 28mm gravity connections to the boiler to provide adequate clearance for fitting the right hand inner case Drain off cocks must be fitted at the lowest poin...

Page 11: ...MOTORISED VALVE VALVED BY PASS LOOP WATER CONTENT 7 LITRES MINIMUM Fit either two motorised valves or one 3 way motorised valve COLD WATER STORAGE OPEN VENT INDIRECT CYLINDER AUTOMATIC AIR VENT MINIM...

Page 12: ...inner case The central heating flow must be connected to the 22mm connection on the top manifold The central heating return must be connected to the 22mm connection on the bottom manifold to ensure co...

Page 13: ...ed and make the necessary hole s in the ceiling roof Proceed to k f ADDITIONAL ELBOW OR FLANGED DUCT WITH ELBOW Using the wall mounting template and the dimensional information given in section 2 4 2...

Page 14: ...se with the four screws previously removed 4 5 AIR FLUE DUCT INSTALLATION 4 5 1 PREPARING THE AIR FLUE DUCTS If the wall thickness is less than 800mm 31in the air flue duct may be fitted without acces...

Page 15: ...n 425mm L 76mm MAX 319mm 17mm 19 ASSEMBLING THE FLUE SYSTEM TOP 1 SLIDE EXTERNAL SEALING RING UPTO FLUE TERMINAL L 2 STANDARD DUCT Push ducts fully over elbow and drill two 3 3mm dia holes Secure with...

Page 16: ...SEALING RING FIBRE SEAL FITTED 4 5 3 INSTALLING THE AIR FLUE DUCT FROM OUTSIDE THE BUILDING Flue hole diameter 100mm wall liner not necessary a Secure the flue elbow with seal to the appliance using 4...

Page 17: ...seholder the most economical heating system However should the boiler be installed for use with a combined PUMPED CH GRAVITY DHW system the small jumper plug in the front of the control box must be re...

Page 18: ...HEATING VALVE HOT WATER VALVE 230V MAINS INPUT OR A B C 4 5 6 8 NOT USED 5 2 1 9 3 8 2 1 10 3 1 2 3 L N E BROWN BLUE GREY ORANGE GREEN YELLOW BROWN BLUE GREY ORANGE GREEN YELLOW 1 3 2 1 2 4 5 2 1 5 1...

Page 19: ...THERMOSTAT 2 1 E N L L N E 9 8 3 2 1 9 2 3 BOILER PUMP 6 3 N L 3 4 N L 6 4 3 2 1 Honeywell ST699B 1002 Link L 5 8 ST 799A ST6400 ST6300 PROGRAMMER 2 Pump Live 1 Switched Live L Permanent Live 230V 50...

Page 20: ...he boiler and system should now be allowed to reach its maximum working temperature and examined for water leaks o Turn off the heating system and drain whilst still hot p Refill and vent ensuring all...

Page 21: ...will now slide forwards out of the boiler complete with its electrodes e Inspect and if necessary clean the burner assembly If either electrode shows signs of damage or wear replace it f Inspect and i...

Page 22: ...ISOLATE the mains electrical supply remove the front painted panel by sliding up and then away from the boiler remove the right hand portion of the inner case by first pulling off the control knob the...

Page 23: ...valve manifold assembly from the boiler 7 9 MAIN BURNER a Remove the four screws securing the left hand inner case Remove the case by sliding it forwards and off the appliance b Remove the combustion...

Page 24: ...EN YELLOW RED RED WHITE WHITE PINK BROWN BLUE GREEN WHITE GREEN YELLOW GREEN YELLOW BLUE BROWN BLACK PURPLE BLUE RED WHITE WHITE RED BLUE RED BROWN RED BLACK BLACK GREEN YELLOW 2 1 N L ORANGE BLACK OR...

Page 25: ...ignition lockout turn thermostat to maximum setting and ensure programmer is switched on before pressing reset button YES NO Replace the fan Is there 230V at the fan motor Replace the fan YES NO Chec...

Page 26: ...Ignition Electrode 1 500573 3 Flame Detection Electrode 1 500574 4 Gas Valve Without Ignition Device 1 500569 5 Ignition Device For Gas Valve 1 500570 6 Aquastat PCB 1 600513 7 Thermistor 1 500572 8...

Page 27: ...nd flue are to be positioned and make the necessary hole in the wall s for the air flue duct as defined in section 4 2 c Install the boiler as described in section 4 with the exception of the flue sys...

Page 28: ...ax 01787 474588 SERVICE HOTLINE 01203 351424 Halstead Boilers are continuously improving their products and therefore reserve the right to change specifications without prior notice and accept no liab...

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