Bosch 520-HN -L Скачать руководство пользователя | Manualshive

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6 720 644 942 (2014/11)

520 HN

32 | Interior components and diagram parts list

9.2

Components diagram

Fig. 27

Components Diagram

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28

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6720608036-05.2 JF

53

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38

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26

44

51

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Содержание 520-HN -L

Страница 1: ...st be installed by a licensed plumber or gas fitter Uponcompletionoftheinstallation theseinstructionsshouldbehanded to the user of the appliance for future reference What to do if you smell gas Close gas valve Open windows 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 ...

Страница 2: ...justment knob 23 5 6 Draining the appliance 23 6 Maintenance and service 24 6 1 Maintenance intervals 24 6 2 Water valve 24 6 3 Pilot 25 6 4 Main burners 25 6 5 Vent assembly heat exchanger 25 6 6 Mineral scale build up 25 6 6 1Descaling heat exchanger 25 7 Troubleshooting 26 7 1 Introduction 26 7 2 No spark at pilot with water flow 26 7 3 Spark appears when hot water is turned on but pilot and bu...

Страница 3: ...relevel e g bathrooms saunas Function To ensure that the water heater functions properly follow these installation and maintenance instructions Never close the blow off line of the T P safety valve For safety reasons water may escape during heating If you smell gas Turn off the gas shut off valve Open windows and doors Do not try to light the appliance Do not touch any electrical switch telephone ...

Страница 4: ...r draw off point When the water heater is in operation temperatures in excess of 122 F 50 C can occur To limit the temperature at the tap install a thermostatic DHW mixing valve Waterheatedforwashingthelaundry dishesandforother cleaning purposes can cause scalding and permanent injuries Children elderly andhandicappedpersonsaremorelikely to be permanently injured by hot water Never leave such indi...

Страница 5: ...omply with local codes or in the absence of local codes with the latest edition of the National Electric Code ANSI NFPA 70 or in Canada all electrical wiring must comply with the local codes and the Canadian Electrical Code CSA C22 1 Part 1 DANGER Electric shock Shock hazard line voltage is present Before servicing the water heater unplug power supply cord from outlet Failure to do so could result...

Страница 6: ...o thermal expansion in a closed water supply system Contact the water supplier or local plumbing inspector on how to correct this situation Do not plug the relief valve WARNING Property damage If the water heater is used in a space heating application all piping and components connected to the water heater must be suitable for use with potable water WARNING Personal Injury from toxic chemicals Tox...

Страница 7: ...emperature is routinely expected to be below freezing Thefreezepreventionkitwillnotprotectplumbingoutsidethe appliance from freezing Precautions should be taken Capacity Minimum input BTU hr 30 735 Btu hr Maximum input BTU hr 117 000 Btu hr Minimum output BTU hr 23 906 Btu hr Maximum output BTU hr 91 525 Btu hr Thermal efficiency Efficiency in 80 Gas Requirement Gas connection inches NPT Inlet gas...

Страница 8: ...lly kept closed This includes domestic hot water circulator pump loop systemsthatmaybeinstalledinhomehotwatersystempriorto installing this unit An approved recirculation design can be found in chapter 4 9 3 3 General rules to follow for safe operation 1 You should follow these instructions when you install your heater IntheUnitedStates Theinstallationmustconformwith local codes or in the absence o...

Страница 9: ...of this heater Gas piping must be sized to provide the required pressure at the maximum output of the heater while all the othergasappliancesareinoperation Checkwithyourlocalgas supplier and see chapter 3 6 and 3 7 to verify proper gas line sizing 6 Should overheating occur or the gas supply fail to shut off turn off the gas supply at the manual gas shut off valve on the gasline Note manualgasshut...

Страница 10: ...djustment knob 34 LED indicator for burner status 35 On Off switch 36 Front cover 37 Mounting holes 38 Exhaust pipe union 39 Draft diverter with flue gas sensor 40 Gas valve 39 38 4 5 23 11 40 H 6720608036 01 2Av 8 66 220 E F G 4 92 125 D 2 50 63 5 1 97 50 3 82 97 A B 37 10 26 35 34 20 36 C Dimensions inches mm 520 HN A B C D E F G H 16 73 425 25 75 655 13 15 334 5 11 130 21 25 540 2 55 65 1 18 30...

Страница 11: ...er The 520 HN is approved for installation on a combustible wall provided the floor covering below the heater is noncombustible For installations in an alcove or closet maintain the minimum clearances to combustible and non combustible materials listed in Fig 4 Model 520 HN TOP A 12 inches 306 mm FRONT B 4 inches 100 mm BACK 0 inches SIDES 4 inches 100mm BOTTOM C 12 inches 306 mm Table 4 WARNING T...

Страница 12: ...als 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 7 Install the two included L shaped hooks to wall studs or support board 13 apart See Fig 7 Hang heater on two L shaped hooks See Fig 8 Fig 6 Remove front cover ...

Страница 13: ...ion rate is questionable Appliances located in confined spaces The confined space must be provided with two permanent openings onecommencingwithin12inchesofthetopandone commencing within 12 inches of the bottom of the enclosure Each opening must have a minimum free area of one square inch per 1000 Btu hr if all air is taken from inside the building 2000Btu hrifallairistakenfromtheoutsidebyhorizont...

Страница 14: ...rom the vertical is considered horizontal 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 maximum horizontal run allowed is half of the total vertical vent height horizontal vent connectorsandelbowsarenottobeconsideredinthetotalgas vent height Vent termination The ...

Страница 15: ...d liner Lining systems include approved clay flue lining a listed chimney lining system or other approved material that will resist corrosion erosion softening or cracking from exhaust flue gases at temperatures up to 1800 degrees F The lining systemmustbelistedforusewithnaturallydrafting drafthood equippedgasappliances FollowlocalcodesandrefertoNFGC 54 and NFPA 58 Existing interior masonry chimne...

Страница 16: ...iolation of CSA certification of the unit The regulator supplied with the heater is preset for the gas shown on the rating plate to the correct pressure It is an appliance level regulator designed for low inlet pressure less than 1 2 Psig or 14 W C GAS VENT TERMINATIONS FOR LISTED VENT CAPS Roof pitch H minimum feet meters Flat to 6 12 1 0 0 30 6 12 to 7 12 1 25 0 38 Over 7 12 to 8 12 1 5 0 46 Ove...

Страница 17: ...or may also be used to detect for leaks HIGH ALTITUDE INSTALLATION The pressure regulator provided with the heater is adjusted to deliverthepropergaspressure asindicatedontheratingplate and in the manual for altitude up to 2000 feet 660 meters above sea level On appliances being installed above 2000 ft 660 meters elevation the inlet gas pressure should be set at installation to the value shown bel...

Страница 18: ...mbers given in thousands Copper tubing is prohibited for use with Natural Gas in the Commonwealth of Massachusetts and not recommended elsewhere Follow boxed numbers for piping just one 520 HN example B I Natural Gas pipe for 20 ft 6 1m will handle 190 000 btu s 55 7 kWh For multiple appliances combine the total btu input load and then refer to applicable chart below EHD Equivalent Hydraulic Diame...

Страница 19: ...SI Z223 1 No Additional Allowance is necessary for an ordinary number of fittings Tube size inches EHD Lenght of Flexible Corrugated Stainless Steel Tubing CSST Feet 10 20 30 40 50 60 1 2 18 129 91 74 64 58 53 3 4 23 254 183 151 131 118 107 1 30 521 365 297 256 227 207 1 1 4 37 971 661 528 449 397 359 Table 9 Nominal Iron Pipe Size inches Black Iron Pipe Lenght of pipe Feet 10 20 30 40 50 60 80 10...

Страница 20: ...ore and after the heater follow local codes if more stringent Never sweat any rigid piping directly to or beneath the water connections or damage can occur to the internal water valve from heating of the pipe Plastics or other PEX type plumbing line materials are not allowed for connecting directly tothewaterheater Keepwaterinletandoutletpipestonoless than 12 7mm diameter to allow the full flow ca...

Страница 21: ...ion for lightingthepilotandmainburners Whenturningtheheateron follow these instructions exactly B Before operating the unit set the On Off button to the On position The On Off button is located on the front panel Smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Close gas valv...

Страница 22: ...onds after the burners come on The burners will remain on until the hot water tap is turned off Note The 520 HN operates in two modes See SETTING THE WATER TEMPERATURE 5 3 To turn off appliance Set the ON OFF switch to the position OFF Fig 18 Close installer supplied manual gas shutoff valve on the supply line to the heater 5 4 Adjusting the water temperature The 520 HN has two knobs that regulate...

Страница 23: ...djusts temperature by adjusting the amount of gas supplied to the burners note change in flame height not always visible with knob adjustment Turningthepoweradjustmentknobclockwisesuppliesless gas to the burners and lowers the water temperature Fig 21 Turning the power adjustment knob counter clockwise supplies more gas to the burners and raises the water temperature Fig 22 Maximum temperature The...

Страница 24: ...site at www bosch climate us Shut off the installer supplied cold water shut off valve to the heater If one is not installed install before proceeding Open the nearest hot water tap to drain the plumbing lines Position a bucket under the heater s water valve assembly to catch any water that may drain from the heater Disconnect the inlet water pipe going to the back of the water valve Disconnect th...

Страница 25: ... higher temperature settings and the water has a high mineral content mineral deposits scale may form within the heat exchanger and periodic descaling may be necessary The heat exchanger should be flushed with a descaling solution 6 6 1 Descaling heat exchanger 1 Shutoffthewatersupplytothewaterheaterusing installer supplied shut off valve 2 Open hot water taps to drain and relieve pressure from th...

Страница 26: ...tate flow control right knob to full clockwise position for the lowest activation rate of about 6 gallon per minute Astheknobisturnedcounter clockwise theactivationrate will rise to about 1 1 gallons per minute 6 Check for obstructions to water flow Clean inlet filter screen in water valve whole house filters showerheads and faucet aerators Obstructions such as dirt debris or mineral deposits will...

Страница 27: ...hould be an audible click from the electrovalve If no click is heard electrovalve may be faulty 3 If pilot and burners light Check for drafts around pilot burner See Bulletin CT 03 but apply smoke to pilot burner without heater operating If smoke is blown away from pilot burner find cause of draft and correct If an AQ4 powervent is installed I Check for presence of time delay in powervent If there...

Страница 28: ... water only 6 Flue gas sensor is tripped Lack of adequate combustion air orventingimproperlybyreducingpipediameter improperuse of elbows or exceeding maximum vent length will trip the flue gas sensor Confirm that venting and combustion air meet requirements in this manual Refer to service bulletin CT 03 7 If the water has a high mineral content the heat exchanger may be scaled internally This rest...

Страница 29: ...boil and produce extremely hot temperatures To descale the heat exchanger section 5 6 7 8 Water is not hot enough 1 Verify that gas type indicated in the rating sticker located on the cover s right hand side coincides with the gas type you are using NG is a natural gas unit and LP is for liquid propane see chapter 2 2 2 Flowatoneparticulartapistoogreatortoomanyfixturesare running at one time Lower...

Страница 30: ...al gas technician to obtain this reading 3 Combustion air is inadequate Ensure that adequate combustion air is being supplied to the unit in accordance with requirements in the installation manual See chapter 3 3 4 Verify that the water heater is vented properly Ensure that the venting meets requirements in chapter 3 6 5 If the burner flames burn yellow or orange the burners must be removed from t...

Страница 31: ...m parts list 9 1 Interior components Fig 26 Functional scheme 4 Heat exchanger 5 Burner 9 Ignition unit 10 Flow control knob 11 Water valve 20 Gas connection 21 Flexible cold inlet 22 Flexible hot outlet 26 Power adjustment knob 30 Pilot burner 51 on off button 4 5 11 20 10 22 26 51 9 30 6720608036 04 3AL 21 ...

Страница 32: ...nents and diagram parts list 9 2 Components diagram Fig 27 Components Diagram 12 50 40 10 11 8 6 7 21 22 42 35 31 33 36 39 45 20 19 15 14 13 16 17 18 43 46 47 36 48 49 2 1 3 5 4 28 29 30 6720608036 05 2 JF 53 23 24 38 41 34 32 37 27 25 26 44 51 52 ...

Страница 33: ...ator NG 8 707 406 084 0 23 Water valve 8 707 006 344 0 24 Watervalve pushrod 8 703 204 051 0 25 Diaphragm 8 700 503 084 0 26 Inlet water connection 8 700 306 110 0 27 Selector screw 8 708 500 304 0 28 Ignition unit 8 707 207 272 0 29 Cable 8 704 404 060 0 30 Flue gas sensor 8 707 206 446 0 Table 13 31 Heat exchanger washer 8 700 103 658 0 32 Threaded bushing 8 700 306 148 0 33 Connector 8 700 306 ...

Страница 34: ...s or parts not provided by BTC 2 Serviceable items and normal maintenance as required per the Installation Manual 3 The workmanship of any installer BTC disclaims and does not assume any liability of any nature for unsatisfactory performance caused by improper installation repair or maintenance 4 Anylaborormaterialcostsforremoval reinstallation repair and replacement of the defective component or ...

Страница 35: ...voice or other proof of purchase and documentation showing the original installation date and location The alleged defective components or parts must be returned to BTC in accordance with BTC procedure then in forceforhandlinggoodsreturnedforthepurposeofinspection to determine cause of failure contact BTC if you have questions regarding the return process If BTC determines that the returned compon...

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