Bosch AQUASTAR 125B LPL operati Installation And Operating Instructions Manual Download Page 17

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Fig. 11

INTERIOR COMPONENTS DIAGRAM

AND PARTS LIST 125BL

Cover

8 705 421 031

Cap cover

8 703 304 011

Water connection gasket

8 710 103 043

Draft divertor

8 705 505 354

Heat exchanger

8 705 406 235

Hot water pipe

8 700 705 431

Cold water pipe

8 700 705 294

Heat exchanger washer

8 710 103 045

Overheat sensor (ECO)

8 707 206 017

Main burner assembly

LPG

8 708 120 296

Main burner assembly

8 708 120 298

Pilot burner assembly

8 708 105 337

11a

Pilot filter screen

8 700 507 055

Piezo electrode

8 708 107 002

Pilot orifice

8 708 200 005

“

LPG

8 748 200 173

Pilot Tube

8 710 707 166

Thermocouple

8 747 202 083

Burner assembly washer

8 710 103 060

Throttle disc

LPG

8 700 100 174

Gas valve

8 707 011 460

Gas valve

LPG

8 707 011 464

Gas supply pipe

8 700 705 464

Electromagnet

8 747 201 094

Electromagnet washer

8 700 103 144

Gas filter

8 700 507 051

Thermocable

8 747 202 078

Water valve assembly

8 707 002 478

Water valve repair kit

8 703 406 214

Water valve diaphragm

8 700 503 043

Slow ignition valve

8 708 503 060

Water valve setting screw

8 703 404 098

O ring setting screw

8 700 205 050

Water valve piston assembly

8 708 500 230

Water valve venturi

8 708 205 248

Water inlet filter

8 700 507 059

Water elbow fitting

8 700 703 114

Summary of Contents for AQUASTAR 125B LPL operati

Page 1: ...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 s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified in...

Page 2: ...GPM Max Water Pressure 150 Psi Shipping Weight 46 LB Net Weight 44 LB 1 8 GPM at 90 rise 3 7 GPM at 45 rise Min Water Flow 1 8 gal min LP GAS Supply Pressure beforeAquastar regulator min 11 W C max 14 W C Required LP GAS Pressure at inlet tap whileAquastar is operating 10 5 W C LP GAS Burner Manifold pressure whileAquastar is operating at maximum input 9 0 W C Natural Gas Supply Pressure beforeAqu...

Page 3: ...ROM COMBUSTIBLEAND NON COMBUSTIBLE MATERIALS FOR ALCOVE OR CLOSET INSTALLATIONS FRONT VIEW SIDE VIEW AQUASTAR MODEL 125BL Some local codes require 18 in garage installations MODEL 125BL TOP A 12 FRONT B 4 BACK 0 SIDES 4 FLOOR C 12 VENT DIAMETER 5 ...

Page 4: ...de poisoning or fire 3 The place where you install the heater must have enough ventilation The National Fire Codes do not allow gas fired water heater installation in bathrooms bedrooms or any occupied rooms normally kept closed See the section below on locating the heater 4 You must vent your heater See section on VENTING Page 6 5 The appliance must be disconnected from the gas supply piping syst...

Page 5: ...hicles RV or boats Reference ANSI Z21 10 3 This product is neither designed or approved for outside installations WARNING The water in this water heater is cold and always remains cold except for the times that hot water is being used DO NOT INSTALL IN AN AREA WHERE IT COULD FREEZE This heater is neither designed for nor approved for outside installation Drain the heater entirely if freezing tempe...

Page 6: ...arpeted wall or over floor covering which is combustible such as carpet The heater must be mounted on a wall using appropriate anchoring materials If wall is a stud wall sheathed with plasterboard it is recommended that support board s either 1x4 s or 1 2 minimum plywood first be attached across a pair of studs and then the heater should be attached to the support boards See Fig 1 Expansion and co...

Page 7: ...dewall vent Contact your local dealer To check the draft Close all doors and windows to the outside Turn on all appliances that force air out of the building These include all exhaust ventilation fans furnaces clothes dryers wood burning stoves etc Open all doors between the AquaStar and these other ap pliances Run the unit for at least 10 minutes Then hold an ordinary mirror at the side above the...

Page 8: ... 19 _ _ _ _ _ _ 1 2 92 62 50 41 37 35 31 29 27 26 5 8 199 131 107 90 79 72 67 62 59 55 3 4 329 216 181 145 131 121 112 104 95 90 7 8 501 346 277 233 198 187 164 155 146 138 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 1...

Page 9: ...ust above the regulator See Fig 4 These readings should be taken while the heater is operating at full input i e with the gas control positioned all the way to the right MAXIMUM INLET GAS FLOW PRESSURE SETTING GAS LINE SIZING It is strongly recommended that the Natural Gas pipe be Black Iron pipe the entire distance from the outside meter to the inlet of the Aquastar regulator 1 2 Black Iron pipe ...

Page 10: ...or gas supplier 7 When lit depress the ON button The heater will now fire when water is drawn at a rate greater than the threshold flow rate NOTE If main burner should fail to ignite make sure pilot is burning If not repeat lighting steps 1 through 6 TO TURN OFF GAS TO APPLIANCE Depress the OFF button and close the gas supply to the heater INFORMATION ABOUT WATER TEMPERATURE The AquaStar 125B LPL ...

Page 11: ...se the heater to deliver less than its full output or to fail to ignite or to shut down completely Problems are stated in upper case bold face Most common causes for the problems follow in order of likelihood The suggested solutions require that the cover be taken off To do this remove incandescent particle tray and unscrew the central screw located at the bottom of the front cover Pull main cover...

Page 12: ... Check the tightness of the thermocouple connection nut at the electromagnet The Electro magnet connection is a large aluminum 17mm hex head nut The thermocouple end is a 5 mm brass nut which screws into the 17 mm nut Tighten the thermocouple nut snugly but not too tight 4 Poor circuit connections at the ECO Energy Cut Off overheat protection Oxidation or looseness of the ECO terminal connections ...

Page 13: ...n the line etc which permits hot and cold water to mix in the plumbing The crossover will create a back pressure in the system preventing the pressure drop in the Aquastar i e cold water is entering the water heater from both sides and the burners will not come on To confirm there is no crossover in the plumbing shut off the cold water supply to theAquaStar Open your hot water taps There should no...

Page 14: ...rnersdoNotIgniteWhenHotWaterTurned On 2 Storage in tank recirculating system has not fully recovered Storage capacity in tank is inadequate Increasing tank size setting slide control higher for a fast recovery or adding a second 125BL for even a faster recovery is suggested 3 Insufficient gas pressure Note required gas pressures page 2 and consult gas ser vice person ...

Page 15: ...1 Heat exchanger 2 Pilot assembly 3 Burner manifold gas pressure test nipple 4 Pilot gas tubing 5 Main gas burner 6 Gas valve 7 Gas control slide 8 Piezo igniter 9 Location of pressure tap nipple 10 Water valve 11 Gas inlet gas pressure test nipple 3 11 9 ...

Page 16: ...16 Fig 11 INTERIOR COMPONENTS DIAGRAM AND PARTS LIST ...

Page 17: ...00 005 LPG 8 748 200 173 14 Pilot Tube 8 710 707 166 15 Thermocouple 8 747 202 083 16 Burner assembly washer 8 710 103 060 17 Throttle disc LPG 8 700 100 174 18 Gas valve NG 8 707 011 460 Gas valve LPG 8 707 011 464 19 Gas supply pipe 8 700 705 464 20 Electromagnet 8 747 201 094 21 Electromagnet washer 8 700 103 144 22 Gas filter 8 700 507 051 23 Thermocable 8 747 202 078 24 Water valve assembly 8...

Page 18: ...18 ...

Page 19: ...19 ...

Page 20: ...ny applicable local codes Water Pressure For installation on well systems insure that your water pressure is between 30 50 psi NOTE Minimum vent height must be 6 feet provided there are no elbows Termination of the vent must be 2 feet above any obstruction within a 10 foot radius of vent pipe Consult your gas utility or National Fuel Gas Code if vent will have elbows or share venting with another ...

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