Manuals / Bosch Appliances / Household Appliance / Water Heater

Bosch Appliances 250SX NG, 250SX LP manual Interior components diagram and parts list, 6 720 607

Models: 250SX NG 250SX LP

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Interior components diagram and parts list

8Interior components diagram and parts list

8.1Interior components

Fig. 38 Components

1Cover

2On/Off switch

3 Reset button

4 LCD display

5 Program button

6 Temperature switches

7 Flue gas collector

8Mixer

9Heat exchanger

10Observation window

11Inlet air duct

12Control unit

13Exhaust fan

14Water valve

15Gas valve

Fig. 39 Appliance overview

6 720 607 057

Page 29

Image 29

Bosch Appliances 250SX NG Interior components diagram and parts list, Observation window 11 Inlet air duct 12 Control unit

Contents

MODEL 250SX NG and 250SX LP Temperature Modulated with Electronic Ignition250 SX NG 250 SX LP Intended for variable flow applications with multiple tapping points23 For your safety IndexIndex Warning IfClose gas valve. Open windows 2 Appliance details 2.1 Features2.2 250 SX Specifications Technical data Minimum recommended water pressure 30 PSI 2.07 bar Connections Fig. 5 Dimensions 2.3 Dimensions and Minimum installation clearancesFig. 6 Minimum clearances Table 1 Minimum clearances2.4 General rules to follow for safe operation 2.5 Proper location for installing your heater2.8 Combustion air requirements 2.7 Mounting installation2.6 Clearances 2.9 Venting The maximum flue gas exhaust temperature on the 250 SX is 437F 225C B Attach the flue gas exhaust accessory 8 705 Appliance details Room sealed installation TWIN PIPE SYSTEMOpen combustion installation SINGLE PIPE SYSTEM Minimum distance Appliance details Recommended exhaust vent terminator positionDescription The venting materials and accessories 2.10 Gas piping & connections Vertical venting installation - MasonryChimney combustion air piping not being shownFOR NATURAL GAS refer to applicable chart belowFollow boxed numbers for piping just one 250 SX example ¾” B.I. Natural Gas pipe for 20 ft 6.1m2.12 Measuring gas pressure 2.11 Gas line sizing2.13 Water connections 2.14 Electrical connections 2.16 For your safety read before operating your water heater2.15 Operating instructions 2.17 Lighting and operating instructionsNOTE on a first time initial instal 3 Operation instructions 3.1 Power3.2 Temperature selection Hot water temperature ºF Fig. 29 Flow/temperature chartsHot water temperature ºC Hot Water Flow GPM3.5 Reset button 3.3 Use of remote control accessory3.4 Operation 3.6 Program button5 Troubleshooting 4 Maintenance and servicePage chapter By installer or service technician only1 Intlet water temperature sensor 2 Ionization sensor 6 Electrical diagram3 Water flow sensor 4 Over heat protection 5 Temperature limiter 11 Display PCB 12 ON/OFF switch 13 Fuse T 2,5A 14 Fuse T 3,15A6 720 607 7 250 SX Functional scheme250 SX Functional scheme 8.1 Interior components 8 Interior components diagram and parts list1 Cover 2 On/Off switch 3 Reset button 4 LCD display 5 Program button 6 Temperature switches 7 Flue gas collector 8 Mixer 9 Heat exchanger6 720 607 8.2 Components diagramFig. 40 Components Diagram Interior components diagram and parts list 8.3 Parts listDescription Reference9.1 Adjusting the unit 9 Special adjustment for measuring and adjusting CO2 levels6 720 607 Fig. 43 Adjustingclockwise 10 Protecting the environment Twelve Year Limited Warranty 11 Twelve Year Limited WarrantyService Labor Costs How to Make a ClaimCONTROLLED ENERGY CORP 340 Mad River Park Waitsfield, Vermont Phone Replacement Parts available from North American DistributorFax 802 techsupport@controlledenergy.com Recycled paper