Bosch BBT NORTH AMERICA AquaStar 240FX Service-Handbuch

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PRECAUTIONS WHEN PERFORMING

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ORK TO THE HEAO THE HEA

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TWH-TK-01

page 1 of 4

rev 01/06

Bosch Water Heating

340 Mad River Park, Waitsfield, VT 05673

©BBT NORTH AMERICA

Bosch Group

OUTSIDE INSTALLATION

Followalllocalcodesandintheabsenceoflocalcodes,followtheNationalFuelGasCode

ANSIZ221.23inUSAorinCanadaCAN/CGAB149.1or.2InstallationofGasBurning

Appliances.

Locatethewaterheaterinanopen, unroofed area,andmaintainthe following minimumclear-

ancesfrom combustible andnoncombustiblematerials:

Piping side 12"

Front(Maintenance space) 24"

Floor Noncombustible base Min. 3" off the ground

Back of heater 1"

Non piping side 6"

Top of heater 36"

Donot install this waterheaterunder an overhang, lessthan3 feet from itstop.Thearea under

anoverhang must be open to three sides.

Wheninstalling the 240 FX Water Heater on a placement stand, be sure to adjust the legs so

thatit stands straight and securely. (Adjustable legs can be moved up to 1" )

240FX

INDOOR AND OUTDOOR

INSTALLATION INFORMATION

MODELS: 240FX

TWH-TK-01

page 2 of 4

rev 01/06

Bosch Water Heating

340 Mad River Park, Waitsfield, VT 05673

©BBT NORTH AMERICA

Bosch Group

Usethe wallmountbrackets to securelyattachthe 240 FXto the wallwhenfloor mounting. Use

ascrew to attach thelongerpart of the wall mountbrackettemporarily to the heater anddeter-

minescrew positionsonthe wall.Thendrill a¼”hole in thewall.Insert anchor. Tightenall 4

screws.Minimum clearance behind the heateris1"

WARNING : Donothave the flue terminalpointingtoward any openingintoa building. Donot

locateyour heater in a pit or locationwheregasand water can accumulate.

WARNING : Do notinstalltheheater where water, debris,orflammable vapors may getintothe

flueterminal. This may causedamageto the heater.

WARNING :Inthe USA,donot install the heaterwiththe ventwithin4 feet ofanyopening intoa

building.In Canada donotinstall the heaterwiththe top ofthevent assembly within10feet any

openinginto a building.

WARNING:Improperinstallationcancause nauseaorasphyxiation fromcarbonmonoxide

andflue gaseswhichcould result insevereinjury ordeath.

TWH-TK-01

page 3 of 4

rev 01/06

Bosch Water Heating

340 Mad River Park, Waitsfield, VT 05673

©BBT NORTH AMERICA

Bosch Group

INDOOR INSTALLATION

FORINDOORINSTALLATION

REMOVEOUTDOOR VENT CAPAND ∗CUT PRESSURESWITCHJUMP WIREINSIDE UNIT THENINSTALL

4" VENTING DIRECTLY ON FLUE OUTLET. Use a UL listed wall terminator for cat 3 appliance

Combustion Air Supply

Thewater heaterlocation must provideenough airfor propercombustion. See thelatest editionof ANSIStan-

dard Z223.1 and any your local codes that should be applicable.

DO NOT INSTALL DIRECTLY ONANY COMBUSTIBLE SURFACE

In general these requirements specify that if the unit is installed in a confined space, there must be a permanent

airsupply opening.

Minimum recommended Air supply to water heater

Water heater size Outside airarea Inside airarea

165,000BTU 42 Sq. IN 165 Sq.IN

The area indicated is for one of two openings one at floor level and one at ceiling, so the total net free area would

bedouble the figuresindicated.

Outside air supply: when combustion air is supplied directly through an outside wall, such as intake louvers

openingsinto the dwelling.Each openingshould give aminimum free areaof onesquare inch per4000 BTUH

input of the total input rating of all appliances in the enclosed area.

Inside air supply, when combustion air is supplied from inside the building, each opening of the closet door

shouldhave aminimum free area of onesquare inchper 1000 BTUH input ofthe totalinput ratingof all appliance

inthe enclosedarea. Theseopenings shouldnever be less than 100 Sq. IN.

Venting Instructions.

Thiswater heatermust be vented in accordance with Venting ofcategory 3appliance, ofthe latestedition ofthe

NationalFuel GasCode.

WARNING : Improper venting ofthis appliance canresult inexcessivelevels ofCarbon Monoxide which can

resultin severepersonal injury ordeath.

240FX

TWH-TK-01

page 4 of 4

rev 01/06

Bosch Water Heating

340 Mad River Park, Waitsfield, VT 05673

©BBT NORTH AMERICA

Bosch Group

Ventterminal

(FX HOOD)

VENTCONNECTIONS

The vent system must be gas tight. All seams and joints must be sealed withhi temp silicone sealant or metal

tape having a minimum temperature rating of 400º F. For best results, a horizontal vent system should be as

short and straight as possible with Single wall Galvanized steel or Stainless steel vent pipe.

The entire vent system must not exceed the size specified below.

Horizontal & Vertical Venting

Diameter Max. No. of Elbow Max. Vertical or Horizontal run in Length

4" 3 Ea. 21 ft

For each additional elbow added, deduct 5 ft. from max. vent length.

FORSIDEWALL VENTING:When ahorizontal vent run exceeds 5 ft the following criteriamust beobserved ;

•Attach a vertical pipe at least 2" high to the water heater outlet before the horizontal run.

•Supportthevent runat3 ftintervals withoverheadhanger.

•Pitch up the vent run toward the vent terminal at a rate of 1/ 4" per foot.

Piping side Min.6"

Front(Maintenancespace) Min. 4" (24”suggested for maintenancespace)

Floor Noncombustible base for either floor or wall mount

Backofheater 1"

Nonpiping side Min. 2"

Topofheater 11"

Vent Termination

•A side wall vent terminal must be used when the water heater is vented through a side wall. Use part

No.FX HOOD. Thehood providesa means of installing ventpipe throughthe building walland mustbe

locatedin accordancewith ANSIZ223.1 and local applicable codes.

•Wall support brackets (needed if wall hanging) must be used. Use part No. 240bracket

Wallsupport

brackets

(240bracket)

240FX

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