Bosch Appliances 250SX LP, 250SX NG Appliance details Room sealed installation Twin Pipe System

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Appliance details

Room sealed installation (TWIN PIPE SYSTEM)

Fig. 12

Combustion air pipe: 26 ft (8 m)

Exhaust vent pipe: 26 ft (8 m)

If the total horizontal exhaust vent length in a side wall installation is greater than or equal to 5 feet (1.5m), a condensate drain tube must be attached to the exhaust collar. See page 14.

Fig. 13

Combustion air pipe: 26 ft (8 m)

Exhaust vent pipe: A+B+C 23½ ft (7.2 m)

A condensate drain tube must be attached to the exhaust collar of the heater for any vertically exhausted vents, see page 14.

Note: reduce 2½ ft for each 90° elbow used after the first one, reduce 1 ¼ ft for each 45° elbow.

A maximum of three 90-degree elbows are permitted.

The exhaust vent pipe and combustion air

ipipe can be run vertically or horizontally. Maximum length for each individual pipe is 26 feet (8 m) with one elbow, for each additional 90° elbow after the first elbow you must reduce 2½ feet from the total vent length, or 1 ¼ feet for each 45° elbow.

Open combustion installation (SINGLE PIPE SYSTEM)

Fig. 14

Exhaust vent pipe: 26 ft (8 m)

If the total horizontal exhaust vent length in a side wall installation is greater than or equal to 5 feet (1.5m), a condensate drain tube must be attached to the exhaust collar. See page 14.

Fig. 15

Exhaust vent pipe: A+B+C 23½ ft (7.2 m)

A condensate drain tube must be attached to the exhaust collar of the heater for any vertically exhausted vents, see page 14.

The exhaust vent system must vent directly to the outside of the building and an adequate amount of indoor combustion air must be provided for this installation. See chapter 2.8.

Connecting a one piece 90 degree elbow pipe to the combustion air inlet adaptor is necessary, this will prevent debris or objects from ever falling into the inlet opening.

Note: reduce 2½ ft for each elbow used after the first one, reduce 1 ¼ ft for each 45° elbow.

A maximum of three 90-degree elbows are permitted.

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Contents SX NG SX LP What to do if you smell gasFor your safety IndexIndex FeaturingFCC Features 250 SX Specifications Technical dataAppliance details Dimensions Safety devicesCombustion Gas typesDimensions and Minimum installation clearances DimensionsProper location for installing your heater General rules to follow for safe operationVenting Mounting installation ClearancesCombustion air requirements Venting Room Minimum exhaust vent size and length Venting optionsAppliance details Room sealed installation Twin Pipe System Open combustion installation Single Pipe SystemDescription Minimum distance 720 607 Shown GAS Line SizingFor Natural GAS For LP GASGas line sizing Be Included in the Pipe SizingWater connections Plumbing Connections and Pressure Relief ValveFor your safety read before operating your water heater Electrical connectionsOperating instructions What to do if YOU Smell GASTo Turn OFF GAS to Appliance Power Temperature selectionOperation instructions Operation instructionsOperation instructions Setting the water temperature Flow/temperature chartsUse of remote control accessory Reset buttonOperation Program buttonMaintenance and service TroubleshootingTroubleshooting Temperature balance valvesUnbalanced pressure in water lines Troubleshooting Display Cause Solution ChapterElectrical diagram Electrical diagramSX Functional scheme SX Functional schemeInterior components diagram and parts list Interior components diagram and parts listInterior components Components diagram Components DiagramParts list Description ReferenceSpecial adjustment for measuring and adjusting CO2 levels Adjusting the unitAdjusting Leave Program modeProtecting the environment Protecting the environmentPacking ComponentsTwelve Year Limited Warranty Controlled Energy Corp