Potthof & Co 24kw, 33kw, 28kw manual Flue Options, Total equivalent length = +B+C+2x90Bends

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8.0Flue Options

8.1Horizontal Flue Systems

Plume Displacement Kit 60 /100 Ø

1M Extensions, 45° & 93° bends are

also available - see Section 9.0

(i)

Horizontal

Flues

1.The standard flue is suitable only for horizontal termination applications.

		2. All fittings should be fully engaged. The approximate
	(ii)	engagement is 40mm. Apply soap solution to the seal on
	(ii)	each fitting to aid assembly.
		each fitting to aid assembly.

3.Maximum permissible equivalent flue lengths are:-

(60/100) (80/125)

Horizontal Concentric 10 metres

20 metres

4.Any additional “in line” bends in the flue system must be taken into consideration.

Their equivalent lengths are:- Concentric Pipes:

135° bend	0.5 metres
93° bend	1.0 metres
Twin Flue Pipe
135° bend	0.25 metres
91.5° bend	0.50 metres

4.The elbow connected to the boiler adaptor is not included in any equivalent length calculations.

5.The illustrations opposite show examples of permissible flue systems.

NOTE: Flue length is measured from point (i) to (ii) as shown.

IMPORTANT: All flue systems must be securely supported at least once every metre. Suitable pipe supports are available as accessories.

NOTE: Horizontal flue pipes should always be installed with a fall of at least 1.5° from the terminal to allow condensate to run back to the boiler.

This bend is equivalent to 1 metre

A	C

(ii)

B

	(i)	This bend is equivalent to
	(i)	1 metre
		1 metre

Total equivalent length =

A+B+C+2x90°Bends

© Baxi Heating UK Ltd 2012

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Contents Installation & Service Instructions Benchmark Scheme Natural GasScheme Members only Installer Notification GuidelinesImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice refer to the most recent version General Safe Manual HandlingPreparation TechniqueContents Contents of Pack IntroductionDescription Layout General LayoutExpansion Vessel Automatic Air Vent Circulation Pump Drain Off PointDomestic Hot Water Mode Fig Central Heating Mode FigFrost Protection Mode Appliance OperationGold Combi 24, 28 & 33 HE a Technical DataDimensions and Fixings Information System DetailsCentral Heating Circuit BypassSafety Pressure Relief Valve Fig System Filling and Pressurising FigExpansion Vessel Central Heating only Domestic Hot Water Circuit Fig ShowersHard Water Areas Location Site RequirementsClearances Figs At leastVentilation of Compartments Site RequirementGas Supply Electrical SupplyPipe run Minimum Fall PerPer Metre RunMinimum Fall 50mm per500mm min Minimum fall RunFlue Plume Displacement KitBelow windows or openings on pitched roofs 2000 Likely flue positions requiring a flue terminal guardTotal equivalent length = +B+C+2x90Bends Flue OptionsTotal Equivalent Length = +B+C+1x90Bend Flue Accessories Key Accessory Size Code NoTelescopic Flue inc. elbow Twin Flue Duct Adaptor Twin Flue ConnectionAir Duct Connection Flue Duct Connection Boiler Adaptor For Roof Terminals Flue DimensionsFlue Trim Terminal Guard FigPlume Displacement Kit Fig Plume DisplacementDetermining Permissible Lengths 28/33Example Elbow50mm General Fitting Notes30mm 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 screwsUnpacking & Initial Preparation InstallationFlushing After considering the site requirementsFitting the Filling Loop Kit Fitting The Boiler Fitting the Safety Pressure Relief Discharge Pipe FigCondensate Drain see section Tighten all the connectionsWall Thickness Flue Elbow Fitting The FlueEnsure Elbow is fully engaged into Boiler Adaptor Wall Thickness Waste FlueInner Flue Support Bracket 25mm Extension Cut EndEnsure Extension is fully engaged into Boiler Adaptor Making The Electrical Connections Preliminary Electrical ChecksTerminal Block Cover Cable Clamp Commissioning Selector Switch DisplayCommissioning the Boiler Screw Pump Automatic Air VentTemperature 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 Completion CompletionCase Front Panel Facia Panel Servicing 13 .1 Annual ServicingAnnual Servicing Inspection 10 ±1 Electrode PositionChanging Components Igniter FigSpark and Sensing Electrodes Fig Venturi Fig Fan FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorBurner Fig Insulation FigExtension Piece Safety Thermostat Fig Central Heating Temperature Sensor NTC FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigPump Head Only Fig Pump Complete FigAutomatic Air Vent Fig Pressure Gauge Figs Hall Effect Sensor FigPressure Relief Valve Fig Plate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Fig14.22 P.C.B. Fig Selector Switch FigExpansion Vessel Fig Gas Valve FigSetting the Gas Valve CO2 check Setting the Gas ValveFlue Adaptor Test Point Plug Analyser Probe CO2 should be 8.4% ± Reduce CO2Electrical Illustrated Wiring DiagramShort Parts List Short Parts List426 315316 311 404419 422 400 415Fault Finding Initial Fault Finding ChecksError Codes Go to section ‘A’ Turn the selector switch to Error 133 flashingReset position for 5 seconds Pump runsTurn Domestic Hot Water Error 133 flashing Go to section ‘I’Open DHW tap fully Close DHW tapSwitch terminal PCB X3 connector terminals 3Fan jammed or faulty winding Replace PCB Replace waterReplace sensor or PCB E28 Check wiring Viewing WindowGas at burner Replace gas valveReplace safety thermostat Replace PCB Is there 230V atReplace sensor Pages for Notes Pages for Notes GAS Boiler System Commissioning Checklist Service Record Potterton