American Water Heater ABCG3 instruction manual Locating the Water Heater, Clearances

Page 9

Installation Considerations

Locating the Water Heater

CAUTION

Property Damage Hazard

All water heaters eventually leak.

Do not install without adequate drainage.

When installing the heater, consideration must be given to proper location. Location selected should be as close to the stack or chimney as practicable, with adequate air supply and as centralized with the piping system as possible.

Fire or Explosion Hazard

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

Avoid all ignition sources if you smell gas.

Do not expose water heater controls to excessive gas pressure.

Use only the gas shown on the water heater rating label.

Maintain required clearances to combustibles.

Keep ignition sources away from faucets after extended periods of non-use.

Read instruction manual before

installing, using or servicing

water heater.

THERE IS A RISK IN USING FUEL BURNING APPLIANCES SUCH AS GAS WATER HEATERS IN ROOMS, GARAGES OR OTHER AREAS WHERE GASOLINE, OTHER FLAMMABLE LIQUIDS OR ENGINE DRIVEN EQUIPMENT OR VEHICLES ARE STORED, OPERATED OR REPAIRED. FLAMMABLE VAPORS ARE HEAVY AND TRAVEL ALONG THE FLOOR AND MAY BE IGNITED BY THE HEATER’S IGNITER OR MAIN BURNER FLAMES CAUSING FIRE OR EXPLOSION. SOME LOCAL CODES PERMIT OPERATION OF GAS APPLIANCES IN SUCH AREAS IF THEY ARE INSTALLED 18” OR MORE ABOVE THE FLOOR. THIS MAY REDUCE THE RISK IF LOCATION IN SUCH AN AREA CANNOT BE AVOIDED.

DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A CARPETED FLOOR. A FIRE HAZARD MAY RESULT. Instead the water heater must be placed on a metal or wood panel extending beyond the full width and depth by at least 3 inches in any direction. If the heater is installed in a carpeted alcove, the entire floor shall be covered by the panel. Also, see the DRAINING requirements in MAINTENANCE Section.

THE HEATER SHALL BE LOCATED OR PROTECTED SO IT IS NOT SUBJECT TO PHYSICAL DAMAGE BY A MOVING VEHICLE.

FLAMMABLEITEMS,PRESSURIZEDCONTAINERSORANYOTHER POTENTIALFIREHAZARDOUSARTICLESMUSTNEVERBEPLACED ON OR ADJACENT TO THE HEATER. OPEN CONTAINERS OR FLAMMABLE MATERIAL SHOULD NOT BE STORED OR USED IN THE SAME ROOM WITH THE HEATER.

THE HEATER MUST NOT BE LOCATED IN AN AREA WHERE IT WILL BE SUBJECT TO FREEZING.

LOCATE IT NEAR A FLOOR DRAIN. THE HEATER SHOULD BE LOCATED IN AN AREA WHERE LEAKAGE FROM HEATER OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO ADJACENT AREA OR TO LOWER FLOORS OF THE STRUCTURE.

WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE DRAIN PAN SHOULD BE INSTALLED UNDER HEATER. Such pans should be fabricated with sides at least 2” deep, with length and width at least 2” greater than diameter of heater and must be piped to an adequate drain. Pan must not restrict combustion air flow.

Clearances

This water heater is approved for installation on combustible flooring (with NSF leg kit #9003425205) in an alcove when minimum clearance from any combustion construction are followed as indicated in Figure 6 and Table 4.

In all installations the minimum combustible clearances from vent piping shall be 6” (152 mm). Vent piping passing through a combustible wall or ceiling must be a continuous run (no joints) and retain 6” (152 mm) clearance unless an approved reducing thimble is used.

A service clearance of at least 24” (61 cm) should be maintained from serviceable parts.

The units are approved for installation with side, rear and ceiling clearances as indicated below:

TABLE 4.

MINIMUM CLEARANCES TO COMBUSTIBLES IN INCHES (mm)

 

 

 

 

 

MODEL

“A” RIGHT SIDE

“B” LEFT SIDE

“C” BACK

“D” CEILING

 

 

 

 

 

BCG3 70T120 5NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

BCG3 80T150 6NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

BCG3 100T180 6NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

BCG3 95T199 6NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

BCG3 100T199 6NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

A/BCG3 100T200 6NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

A/BCG3 100T250 6NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

A/BCG3 100T275 6NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

A/BCG3 85T310 6NOX

6” 152 mm

6” 152 mm

6” 152 mm

12” 305 mm

 

 

 

 

 

A/BCG3 85T366 6NOX

6” 152 mm

6” 152 mm

6” 152 mm

12” 305 mm

 

 

 

 

 

A/BCG3 85T390 6NOX

3” 76 mm

3” 76 mm

3” 76 mm

12” 305 mm

 

 

 

 

 

TABLE 5.

MINIMUM CLEARANCES TO NON-COMBUSTIBLE CONSTRUCTION

MODEL

“A” RIGHT SIDE

“B” LEFT SIDE

“C” BACK

“D” CEILING

 

 

 

 

 

BCG3 70T120 5NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

BCG3 80T150 6NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

BCG3 100T180 6NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

BCG3 95T199 6NOX

2” 51 mm

2” 51 mm

2” 51 mm

12” 305 mm

 

 

 

 

 

BCG3 100T199 6NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

A/BCG3 100T200 6NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

A/BCG3 100T250 6NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

A/BCG3 100T275 6NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

A/BCG3 85T310 6NOX

3” 76 mm

3” 76 mm

3” 76 mm

12” 305 mm

 

 

 

 

 

A/BCG3 85T366 6NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

A/BCG3 85T390 6NOX

0” 0 mm

0” 0 mm

0” 0 mm

12” 305 mm

 

 

 

 

 

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Contents Commercial gas water heaters Table Of Contents Approvals Safe Installation, Use and ServiceFire and Explosion Hazard General Safety InformationGrounding Instructions Precautions Hydrogen Gas FlammableIntroduction Qualified Installer or Service AgencyAbbreviations Used QualificationsHigh Limit Switch Eliminator self-cleaning systemLow Gas Pressure Switch Electronic Ignition ControlRough In Dimensions Installation considerationsROUGH-IN-DIMENSIONS Recovery CAPACITIES, based on 80% efficiencyClearances Locating the Water HeaterInstallation on Combustible Flooring Insulation BlanketCirculation pumps High Altitude Installations Installation Requirements Dishwashing Machines Temperature-Pressure Relief ValveClosed Water Systems Thermal ExpansionContaminated Air Air RequirementsValve Discharge Pipe Requirements Unconfined Space Confined SpaceVenting Fresh Air Openings for Confined Spaces Multiple Heater ManifoldOutdoor Air Through Two Openings Outdoor Air Through One OpeningAir From Other Indoor Spaces Outdoor Air Through Two Vertical DuctsMultiple Gas Fired Tank-Type Heaters Technical Data VentingTechnical Data Venting Water heater installation Water Line ConnectionsValve Discharge Pipe Tube Inlet Installation Installation Diagrams Top Inlet/Outlet UsageHeater Wiring Gas Piping Gas Line Leak TestingPurging Gas Meter Size Natural Gases OnlyStart Up Prior to Start UpInitial Start Up Checking Venting Water Temperature AdjustmentGas Valves Checking the InputLighting & Operation Label Sequence of OperationSequence of Operation Flow Chart Maintenance Anode Rod Inspection Hot Water OdorDraining and Flushing To Drain the Water Heater Storage TankDeliming Using FLO-JUG Method Tank Cleanout ProcedureDeliming Solvents ExampleChemical Hazard System Diagnostics Ignition Module SystemElectrical Servicing For Your Information High Water Temperature Shut Off SystemStart Up Conditions Operational ConditionsTroubleshooting Qualified Service AgencyComplaint Cause Remedy User Water Piping DiagramsTemperature & Pressure Temperature & Pressure Relief Valve Circulating Pump Multi Flue 2 Units Multi Flue 2 Units with Vertical Storage Tank Multi Flue 2 Units with Vertical Storage Tank Return from Multi Flue 2 Units TWO Temperature Multi Flue 2 Units with Booster TWO Temperature MULTI-FLUE 3 Units MULTI-FLUE 3 Units with Vertical Storage Tank MULTI-FLUE 3 Units with Horizontal Storage Tank Multi Flue Flue 4 Units MULTI-FLUE 4 Units with Vertical Storage Tank MULTI-FLUE 4 Units with Horizontal Storage Tank Manifold Kits Claim Procedure Service and Repair ExpensesALL Other Parts Conditions and Exceptions