Bosch AQUA STAR 250SX LP Manuel d'utilisateur

MODEL 250SX NG and 250SX LPTemperature Modulated with Electronic IgnitionSuitable for heating potable water only Not approved for space heating purpos

6 720 607 05710Appliance detailsThe maximum flue gas exhaust temperature on the 250 SX is 437°F (225°C)Venting OptionsExhaust vent diameter and materi

6 720 607 057Appliance details11The appliance should be located as close to the pointof termination as possible. The maximum vent length is26 feet (8

6 720 607 05712Appliance detailsRoom sealed installation (TWIN PIPE SYSTEM)Fig. 12Combustion air pipe: ≤ 26 ft (8 m)Exhaust vent pipe: ≤ 26 ft (8 m)If

6 720 607 057Appliance details13Recommended exhaust vent terminator positionFig. 16* Subject to local codes and anticipated snow level** Other equipme

6 720 607 05714Appliance detailsSupporting the exhaust vent system and the use of an external condensate trapExternal condensate trapsB A condensate

6 720 607 057Appliance details15A condensate drain tube must be attached to theexhaust collar of the heater for any vertically exhaustedvents,

6 720 607 05716Appliance detailsFOR NATURAL GASMaximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and a Press

6 720 607 057Appliance details172.11 Gas line sizingB It is strongly recommended that the Natural Gas pipebe Black Iron pipe the entire distance

6 720 607 05718Appliance details2.13 Water connections When facing the heater, the ¾” cold water inlet is on thebottom right and the hot water outlet

6 720 607 057Appliance details192.14 Electrical connectionsThe 250 SX requires an electrical power supply from a120VAC 60Hz circuit and must be proper

6 720 607 0572IndexIndex1Warning 22 Appliance details 42.1 Features 42.2 250 SX Specifications (Technical data) 42.3 Dimensions and Minimum instal

6 720 607 05720Appliance detailsWhen the heater is in operation you will hear its powervent fan and burner operating. Upon turning off the hotwater fl

6 720 607 057Operation instructions213 Operation instructionsFig. 261 On/Off switch2 Reset button3 Program Key4 Increasing temperature selector5 Decre

6 720 607 05722Operation instructionsSetting the water temperatureThe desired temperature of the hot water can be adjusted on the front control panel

6 720 607 057Operation instructions233.3 Use of remote control accessoryFig. 30 Remote controlThe wireless remote control accessory and thetempe

6 720 607 05724Maintenance and service4 Maintenance and serviceThe unit should be checked once a year by a gastechnician. If repairs are nee

6 720 607 057Troubleshooting25Test by following 4th bullet under BURNERS DONOT IGNITE WHEN HOT WATER IS TURNED ON.LOW WATER FLOW/PRESSURE• Too

6 720 607 05726TroubleshootingDisplay Cause SolutionE9 Temperature limiter opened circuit (overheat). Trips at 220F (104C).Check connections.*Check he

6 720 607 057Electrical diagram276 Electrical diagramFig. 36 Electrical scheme1 Intlet water temperature sensor2 Ionization sensor3 Water flow sensor4

6 720 607 05728250 SX Functional scheme7 250 SX Functional schemeFig. 37 Functional scheme

6 720 607 057Interior components diagram and parts list298 Interior components diagram and parts list8.1 Interior componentsFig. 38 Components1 Cover2

6 720 607 057Warning3What to do if you smell gas• Close gas valve. Open windows.• Do not try to light any appliance.• Do not touch any electrical swit

6 720 607 05730Interior components diagram and parts list8.2 Components diagramFig. 40 Components Diagram

6 720 607 057Interior components diagram and parts list318.3 Parts listItem Description Reference1 Front cover 8 705 421 8372 Shield 8 705 506 6613 He

6 720 607 05732Special adjustment for measuring and adjusting CO2 levels9 Special adjustment for measuring and adjusting CO2 levelsThe CO2 can only be

6 720 607 057Special adjustment for measuring and adjusting CO2 levels33Fig. 43 AdjustingLeave “Program” modeB Turn ON/OFF switch in position OFF and

6 720 607 05734Protecting the environment10 Protecting the environment PackingThe packing box may be fully recycled as confirmed bythe recycling symbo

6 720 607 057Twelve Year Limited Warranty3511 Twelve Year Limited WarrantyGeneralAquastar water heaters are warranted by theManufacturer (BOSCH

Replacement Parts available from North American DistributorCONTROLLED ENERGY CORP.340 Mad River ParkWaitsfield, Vermont 05673Phone 800-642-3111Fax (80

6 720 607 0574Appliance details2 Appliance details2.1 FeaturesParts• Touch Pad interface control• High power pre-mix compact burner with low Noxe

6 720 607 057Appliance details5• Minimum recommended water pressure: 30 PSI(2.07 bar)• Connections:– Bottom of heaterCombustion•NOx ≤ 55 ppm•CO ≤

6 720 607 0576Appliance details2.3 Dimensions and Minimum installation clearancesFig. 5 Dimensions1 Cover2 On/Off switch3 Reset button4 LCD display5 P

6 720 607 057Appliance details72.4 General rules to follow for safeoperationB 1. You should follow these instructions when youinstall your he

6 720 607 0578Appliance details2.6 ClearancesThe 250 SX is design certified for installation on acombustible wall (see 2.7 Mounting insta

6 720 607 057Appliance details9– b) In unconfined spaces in buildings ofconventional frame, masonry, or metalconstruction, infiltration air