Bosch 125B LP Installation & Operating Instructions Manual Download Page 23 | Manualshive

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Fig. 14

- Flow chart of Aquastar 125 B

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Summary of Contents for 125B LP

Page 1: ...may result causing property damage personal injury or death FOR YOUR SAFETY Do not store or use gasoline or other flammable combustible or corrosive vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor...

Page 2: ...of the heater Easy pilot flame lighting with push button piezo ignition BOSCH is constantly improving our products therefore specifications are subject to change without prior notice AquaStar 125B LP and 125B NG Specifications Gas Input max 117 000 Btu hr min 28 000 Btu hr Water Connection 1 2 Thread fitting NPT H x W x D 29 3 4 x 18 1 4 x 8 3 4 Vent 5 Gas Connection 1 2 NPT thread Min Water Press...

Page 3: ...MUM INSTALLATION CLEARANCES FROM COMBUSTIBLE AND NON COMBUSTIBLE MATERIALS FOR ALCOVE OR CLOSET INSTALLATIONS FRONT VIEW SIDE VIEW AQUASTAR MODEL 125B MODEL 125B TOP A 12 FRONT B 4 BACK 0 SIDES 4 FLOOR C 12 VENT DIAMETER 5 ...

Page 4: ...rt of the control system and any gas control which has been underwater PROPER LOCATION FOR INSTALLING YOUR HEATER Carefully select the location of your new heater For your safety and for proper heater operation you must provide an abundant supply of combustion air and a proper venting installation The heater may still operate even when improperly vented It will however be less efficient and could ...

Page 5: ...r 125B alone b In unconfined spaces in buildings of conventional frame masonry or metal construction infiltration is normally adequate to provide air for combustion ventilation and dilution of flue gasses Appliances located in confined spaces The confined space must be provided with two permanent openings one commencing within 12 inches of the top and one commencing within 12 inches of the bottom ...

Page 6: ...Particle Tray Illustration The incandescent particle tray shipped loose in the carton with the water heater must be attached at the bottom of the water heater front cover at the time of installation Use the screws provided See figure 3 SCREWS INCANDESCENT PARTICLE TRAY Note Typically the minimum clearence to combustible materials should not be less than 6 for single wall flue pipe Note that this c...

Page 7: ...orizontal Horizontal sections must slope upwards at least inch for every foot of its horizontal length and be properly supported Keep the horizontal section short and avoid too many elbows The minimum vertical gas vent height allowed is 6 feet horizontal vent connectors and elbows are not to be considered in the total gas vent height All gas vent sections must be secured to each other with sheet m...

Page 8: ...mney Also an approved thimble or collar must be used when penetrating a masonry chimney A Existing INTERIOR Masonry Chimney The metal gas vent pipe should be permanently mounted inside the masonry chimney Double wall Type B gas vent is recommended The masonry chimney may have to be tile or metal lined before the insertion of the gas vent pipe check local codes for clarification The lining material...

Page 9: ...heater such as the AquaStar are only on at the time that hot water is actually being used the vent pipe is therefore cold except for the short durations when hot water is being used it is therefore very important that the venting and air supply be adequate to provide a good positive draft as soon as the burners turn on The AquaStar 125B instantaneous water heaters have built in draft diverters and...

Page 10: ...tions are made check for gas leaks at all joints not just the ones you made Apply some soapy water to all gas fittings and gas valve Soap bubbles are a sign of a leak NOTE Do not apply soap solution to pilot filter screen or pilot orifice area If you have a leak shut off the gas After verifying that required gaskets are in place tighten appropriate fittings to stop leak Turn the gas on and check a...

Page 11: ... for an ordinary number of fittings GAS LINE SIZING Nominal Iron Length of Black Iron Pipe Feet Pipe Internal Size Diameter inches inches 10 20 30 40 50 60 70 80 90 100 125 150 175 200 1 4 0 364 32 22 18 15 14 12 11 11 10 9 8 8 7 6 3 8 0 493 72 49 40 34 30 27 25 23 22 21 18 17 15 14 1 2 0 622 132 92 73 63 56 50 46 43 40 38 34 31 28 26 3 4 0 824 278 190 152 130 115 105 96 90 84 79 72 64 59 55 1 1 0...

Page 12: ... The water heater is now ready to operate FOR YOUR SAFETY READ BEFORE LIGHTING THE PILOT Warning If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life A This appliance has a piezo igniter for lighting the pilot burner When lighting the pilot follow these instructions exactly B BEFORE LIGHTING smell all around the appl...

Page 13: ... per minute Given that average incoming water temperatures are 50F in winter months this heater will produce approximately 140F water at these flow rates Turning the dial all the way to the left Fig 9 Water Flow Control Knob counterclockwise will produce a temperature rise of approximately 45F for flow rates between 1 1 and 3 7 gallons per minute When setting the gas control slide to the single fl...

Page 14: ...me should envelop approximately 10 mm 3 8 of the tip of the thermocouple If it is too small the pilot burner must be cleaned To obtain a spark the position of the Piezo igniter electrode should be approximately 3 mm 1 8 from the pilot burner tip Main Burner Flames The main burner flames should be blue with a more intense blue cone in the center core Yellow flames could be a sign of wrong size gas ...

Page 15: ... seconds If the flow control knob is turned fully counterclockwise a flow rate of 1 1 gpm is required to activate the burners 4 Cold water inlet filter on heater is dirty Remove filter and clean This screen filter is located at the inlet side of the water valve fig 13 25 Check and clean faucet aerators too PILOT LIGHT WILL NOT LIGHT 1 No gas to the AquaStar A Gas cock on gas line may not be open B...

Page 16: ...sor tripped due to overheating Re ignite the appliance 10 minutes later If it happens again contact your service person 5 Flue gas safety device tripped Ventilate the room and re ignite the appliance 10 minutes later If it happens again contact your service person WATER IS TOO HOT 1 Temperature Selection too high Position the gas control slide to the single flame setting to reduce the burner outpu...

Page 17: ... heater can produce temperatures that may be found to be too hot A temperature balance shower valve can automatically mix in cold water to reduce such hot water temperature in the event of any temperature instability with the use of a temperature balance shower valve refer to shower valve manufactures instructions for internal adjustment setting Adjustments should be made to the hottest setting in...

Page 18: ...18 6 720 607 030 ...

Page 19: ...ld gas pressure test nipple 4 Main gas burner 5 Pilot gas tubing 6 Gas valve 7 Pressure tap screw location 8 Gas control slide 9 Piezo igniter 10 Water valve 11 Temperature adjustment selector 12 Gas inlet gas pressure test nipple 13 Flexible hot outlet 5 11 1 4 9 10 3 12 2 6 7 8 13 6720606800 07 1AL ...

Page 20: ...20 6 720 607 030 Fig 13 INTERIOR COMPONENTS DIAGRAM AND PARTS LIST ...

Page 21: ...173 LP 14 Pilot tube 8 700 707 320 15 Burner assembly washer 8 710 103 060 16 Throttle disc 8 700 100 174 LP 17 Gas valve 8 707 021 090 NG 17 Gas valve 8 707 021 091 LP 18 Gas supply pipe 8 700 705 552 19 Electromagnet 8 707 201 012 20 Thermocouple Flue Gas Sensor 8 707 206 074 21 Water valve 8 707 002 649 22 Water valve cover 8 705 500 101 23 Pushrod 8 700 306 114 24 Diaphragm 8 700 503 053 25 Wa...

Page 22: ...her parts If any other part fails within two 2 years after original installation and operation CEC will furnish a replacement part free of charge Shipping costs In addition to supplying the replacement part s CEC will provide ground service delivery for these parts Expedited or upgraded shipping will be charged to the customer Service labor costs This warranty does not cover any labor costs associ...

Page 23: ...23 6 720 607 030 Fig 14 Flow chart of Aquastar 125 B ...

Page 24: ...E L B A T E C N A N E T N I A M R A E Y Y R E V E S R A E Y 2 Y R E V E S R A E Y 5 3 Y R E V E E V L A V R E T A W E T A C I R B U L E V L A V R E T A W D L I U B E R N E E R C S R E T L I F R E T A W T C E P S N I Y L B M E S S A T O L I P T C E P S N I Y L B M E S S A T N E V T C E P S N I R E N R U B N I A M T C E P S N I VULCANO Termodomésticos S A Estrada de Cacia 3801 856 Aveiro PORTUGAL 20...

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