A.O. Smith XCR-40-LP Installation Instructions And Use & Care Manual Download Page 2

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COMPLETED INSTALLATION TYPICAL

Expansion
tank
(Connect to
cold water
supply)

Hot
water
line

T&P
relief
valve

Cold water
shut o

ﬀ

Dra hood

T&P
discharge
pipe

Drain pan
discharge
pipe

Metal drain pan

Gas control
valve/thermostat

Cold
water
line

Gas supply
shut o

ﬀ

Vent
pipe

Drain valve

Gas supply

Sediment Trap

Summary of Contents for XCR-40-LP

Page 1: ...on or service can damage the water heater your house and other property and present risks including fire scalding electric shock and explosion causing serious injury or death Do not store or use gasol...

Page 2: ...t to cold water supply Hot water line T P relief valve Cold water shut o Dra hood T P discharge pipe Drain pan discharge pipe Metal drain pan Gas control valve thermostat Cold water line Gas supply sh...

Page 3: ...uc ons is not followed exactly a fire or explosion may result causing property damage personal injury or death Do not store or use gasoline or other flammable vapors and liquids in the vicinity of thi...

Page 4: ...ake water hot enough to cause severe burns instantly resul ng in severe injury or death Feel water before bathing or showering To reduce the risk of scalding install Thermosta c Mixing Valves temperat...

Page 5: ...on if you suspect flammable vapor have accumu lated inside or outside the appliance Immediately call a qualified person to inspect the appliance Water heaters subjected to a flammable vapors inci den...

Page 6: ...odorless gas that is a by product of burning of fuels such as coal wood charcoal oil kerosene propane and natural gas Breathing excessive and abnormal amounts of carbon monoxide can cause carbon monox...

Page 7: ...al plumbing supplier with compres sion fi ngs that don t require soldering This kit includes two 12 flex water lines two compression fi ngs an 18 flexible gas line two nipples and Teflon tape For home...

Page 8: ...e you will need to conduct the vent dra test on pages 23 24 when installa on is finished If there is not enough ven la on you will need to ven late with outside air Check for Chemicals Installa ons wh...

Page 9: ...or horizontal ducts B2 Determine type of ven la on There are several types of ven la on that can be used 1 Direct to outdoors 2 Ver cal ducts 3 Horizontal ducts 4 Single opening not recom mended must...

Page 10: ...ension of no less than three inches All screens must have mesh or larger Moveable louvers must be locked open or interconnected with the equipment so that they open au toma cally during opera on Keep...

Page 11: ...l spaces or any confined or inaccessible loca on Single wall vent pipe cannot pass through any interior wall Clearance to Combus ble Materials The vent pipe cannot pass through any ceiling floor firew...

Page 12: ...m with type B double wall vent pipe Figure 9 Venting through a chimney with type B double wall vent pipe Gas Piping Gas piping must be installed accord ing to local and state codes or in the absence o...

Page 13: ...at ing appliances when used to supply potable water Solar Installa on If this water heater is used as a solar stor age heater or as a backup for the solar system the water supply temperatures to the w...

Page 14: ...s water pressure Locate your home s Pressure Reduc ing Valve PRV on the main incoming cold water supply line and adjust the water pressure control to between 50 and 60 psi If your home does not have...

Page 15: ...eaks and can shut o the water heater s water supply if a leak occurs Install a metal drain pan available at your local plumbing supplier under the water heater to catch condensa on or leaks from the p...

Page 16: ...If the water heater is installed di rectly on carpe ng it shall be in stalled on a metal or wood panel extending beyond the full width and depth of the water heater by at least 3 in 76 2mm in any dir...

Page 17: ...flat blade screwdriver open the drain valve Sediment build up in the bo om of the water heater may hinder or prevent draining Figure 20 Draining the old water heater 8 Also open a hot water faucet to...

Page 18: ...that extends beyond the dimen sions of the water heater width and depth by at least 3 inches 76 2 mm in any direc on If the water heater is installed on carpet in an alcove or closet the en re floor...

Page 19: ...las c pipe or any type of hose Terminate the discharge pipe a maximum of six inches above a floor drain or outside the building Do not drain the discharge pipe into the drain pan instead pipe it separ...

Page 20: ...g the water heater for service or replacement con nect the water pipes with a coupling called a union We recommend using a dielectric type union available at your local plumbing supplier Dielec tric u...

Page 21: ...tor at the nearest hot water faucet This allows debris in plumbing system to be washed out of the pipes 2 Turn the cold water supply back on and fill the tank 3 Open a hot water faucet and allow the w...

Page 22: ...ith large amounts of lint dust etc If so the air filter or flame arrestor located on the bo om of the water heater will need to be cleaned more o en Combus on Air Supply and Ven la on Adequate air sup...

Page 23: ...three seconds Wait 10 minutes between ligh ng a empts 7 A solid Status Light means the pilot was lit but is now o Release the gas control knob and wait 10 minutes Once the Status Light goes out repea...

Page 24: ...own as smelly water and can reduce the levels of bacteria that cause water borne diseases Water usage pa erns as well as heat from sources such as solar collectors ambient air and the pilot light can...

Page 25: ...ot water is simply not warm enough there are several possible causes Faulty Thermosta c Mixing Valve in a faucet or shower control check other faucets in the house for hot water Water heater s capacit...

Page 26: ...Valve or discharge pipe and do not operate the water heater without a func oning T P Relief Valve this could cause an explosion Water Pressure too High High water pressure can cause the T P Relief Va...

Page 27: ...Residen al Standard Gas Water Heater Use and Care Guide 27 TROUBLESHOOTING Residen al Standard Gas Water Heater Use and Care Guide 27 TROUBLESHOOTING...

Page 28: ...the drain valve and place the other end of the hose in a drain outside or in buckets Note that sediment in the bo om of the tank may clog the valve and prevent it from draining If you can t get the t...

Page 29: ...properly perform this visual inspec on or if the burner needs to be cleaned get help from a qualified person T P Relief Valve Maintenance Figure 45 T P Relief Valve Read and follow the opera ng and an...

Page 30: ...d a 4 sec on of gas pipe into the inlet and use it to turn the FVIR Safety System Opera onal Checklist TROU BLESHOOTING CHART gas control valve thermostat counterclockwise Do not use pipe wrench or eq...

Page 31: ...Residen al Standard Gas Water Heater Use and Care Guide 31 NOTES NOTES...

Page 32: ...32 Residen al Standard Gas Water Heater Use and Care Guide NOTES NOTES...

Page 33: ...Residen al Standard Gas Water Heater Use and Care Guide 33 NOTES NOTES...

Page 34: ...34 Residen al Standard Gas Water Heater Use and Care Guide NOTES NOTES...

Page 35: ...wire lead 11 OUTER DOOR 12 PILOT THERMOPILEASSEMBLY KIT 13 FINAL BURNER ASSEMBLY 14 MANIFOLD DOOR GASKET 15 BASE RING AIR FILTER REPAIR PARTS LIST 4 6 1 8 10 9 11 15 5 7 8 Replacement parts may be ord...

Page 36: ...embly which contains the burner orifice manifold tube gasket door pilot tube thermopile manifold component block with retainer clip thermal switch and pilot assembly Natural Gas Low Nox or L P Item 14...

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A.O. Smith XCR-40-LP, Installation Instructions And Use & Care Manual

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