Short Parts List, 426, 421 420 503 504 | Potthof & Co 28kw, 24kw

306

426 315316

311 404419

422

400

415

302	421	420

503

504 17.0 Short Parts List

Short Parts List

Key	Description	Manufacturers
No.		Part No.

311	Fan	5121447

426	Motor 3 Way Valve	5132452

315	Igniter Electrode	720222801

316	Sensing Electrode	720222901

422	Gas Valve	720301001

404	Hall Effect Sensor	5114767

306	Burner 24/28	5122149
	Burner 33	5114697

419	Water Pressure Switch	5114748

400	Plate Heat Exchanger 24/28 248048
	Plate Heat Exchanger 33	5114708

415	Pump	248042

421	NTC Sensor	5114725

420	Overheat Thermostat	5114729

504	Pressure Gauge	248090

503	PCB 24	5121862
	PCB 28	720043401
	PCB 33	720795201

302	Flue Safety NTC	5114747

Page 53

Image 53

Potthof & Co 28kw, 24kw, 33kw manual Short Parts List, 426, 315316 311 404419 422 400 415, 421 420 503 504

Contents

Installation & Service Instructions Benchmark Scheme Natural Gas Scheme Members only Installer Notification Guidelines Codes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation General Safe Manual HandlingPreparation Technique Contents Description Contents of PackIntroduction Layout General LayoutExpansion Vessel Automatic Air Vent Circulation Pump Drain Off Point Domestic Hot Water Mode Fig Central Heating Mode FigFrost Protection Mode Appliance Operation Gold Combi 24, 28 & 33 HE a Technical Data Dimensions and Fixings Information System DetailsCentral Heating Circuit Bypass Expansion Vessel Central Heating only Safety Pressure Relief Valve FigSystem Filling and Pressurising Fig Hard Water Areas Domestic Hot Water Circuit FigShowers Location Site RequirementsClearances Figs At least Ventilation of Compartments Site RequirementGas Supply Electrical Supply Pipe run Minimum Fall PerPer Metre Run 500mm min Minimum Fall50mm per Minimum fall Run Flue Plume Displacement KitBelow windows or openings on pitched roofs 2000 Likely flue positions requiring a flue terminal guard Total equivalent length = +B+C+2x90Bends Flue Options Total Equivalent Length = +B+C+1x90Bend Telescopic Flue inc. elbow Flue AccessoriesKey Accessory Size Code No Air Duct Connection Flue Duct Connection Boiler Adaptor Twin Flue Duct AdaptorTwin Flue Connection For Roof Terminals Flue DimensionsFlue Trim Terminal Guard Fig Plume Displacement Kit Fig Plume Displacement Determining Permissible Lengths 28/33Example Elbow 30mm 50mmGeneral Fitting Notes 60Ø extension piece. It must be secured using two Elbow to allow the flue to be installed as shownUsing a suitable bit e.g mm, drill through Extension and outlet. Secure using two of the screws Unpacking & Initial Preparation InstallationFlushing After considering the site requirements Fitting the Filling Loop Kit Fitting The Boiler Fitting the Safety Pressure Relief Discharge Pipe FigCondensate Drain see section Tighten all the connections Wall Thickness Flue Elbow Fitting The FlueEnsure Elbow is fully engaged into Boiler Adaptor Wall Thickness Waste Flue Ensure Extension is fully engaged into Boiler Adaptor Inner Flue Support Bracket25mm Extension Cut End Terminal Block Cover Cable Clamp Making The Electrical ConnectionsPreliminary Electrical Checks Commissioning Selector Switch DisplayCommissioning the Boiler Screw Pump Automatic Air Vent Temperature Control Gas Pressure Test Point Gas Valve Temperature Control Selector Switch DisplayCheck the Operational Working Gas Inlet Pressure It is necessary to set the boiler to ‘Calibration Mode’ Setting the Timer Case Front Panel Facia Panel CompletionCompletion Annual Servicing Inspection Servicing13 .1 Annual Servicing 10 ±1 Electrode Position Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Venturi Fig Fan FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan Collector Extension Piece Burner FigInsulation Fig Safety Thermostat Fig Central Heating Temperature Sensor NTC FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor Fig Automatic Air Vent Fig Pump Head Only FigPump Complete Fig Pressure Relief Valve Fig Pressure Gauge FigsHall Effect Sensor Fig Plate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Fig 14.22 P.C.B. Fig Selector Switch Fig Expansion Vessel Fig Gas Valve Fig Setting the Gas Valve CO2 check Setting the Gas ValveFlue Adaptor Test Point Plug Analyser Probe CO2 should be 8.4% ± Reduce CO2 Electrical Illustrated Wiring Diagram Short Parts List Short Parts List426 315316 311 404419 422 400 415 Error Codes Fault FindingInitial Fault Finding Checks Go to section ‘A’ Turn the selector switch to Error 133 flashingReset position for 5 seconds Pump runs Turn Domestic Hot Water Error 133 flashing Go to section ‘I’Open DHW tap fully Close DHW tap Switch terminal PCB X3 connector terminals 3Fan jammed or faulty winding Replace PCB Replace water Replace sensor or PCB E28 Check wiring Viewing WindowGas at burner Replace gas valve Replace sensor Replace safety thermostatReplace PCB Is there 230V at Pages for Notes Pages for Notes GAS Boiler System Commissioning Checklist Service Record Potterton

Potthof & Co 28kw, 24kw Short Parts List, 426, 315316 311 404419 422 400 415, 421 420 503 504

Models: 24kw 28kw 33kw

426

315316

311

404419

422

400

415

421

420

503

504

17.0 Short Parts List

Short Parts List

Key

Description

Manufacturers