A.O. Smith BT- 80 warranty Checklist

Page 16

DELIMING USING FLO-JUG METHOD

UN•LIME in the 5 gallon size is recommended for deliming of the BT-80 and 100 models. UN•LIME with the necessary hoses and fittings to delime your heater is also available as a kit: Up-N-Down Transfer Kit. Contact your local A.O. Smith dealer, distributor or, A.O. Smith Water Products Company, Telephone: (800) 433-2545, Fax: (800) 433-2515 or Website: www.hotwater.com.

Prepare the Water Heater

To delime the water heater using the Flo-Jug method, first prepare the heater for deliming as described in the "Why? When? and How?" booklet, Form No. 4800. Then install the long plastic male adapter fitting into the drain valve opening of the water heater. Use teflon tape and hand tighten only. Do not overtighten.

Prepare the Up-N-Down Transfer Kit

The next step is the preparation on the Up-N-Down Transfer Kit, if you have not already done so:

1.With the 5 gallon Up-N-Down container in the vertical position, unscrew the plastic vent cap in the handle and pierce the plastic membrane over the vent boss under the cap to allow the container to vent.

Note: If your container does not have the vent cap and vent boss, drill a 3/16" (4.76mm) hole in the handle. When you have finished deliming you will be able to plug this drilled vent with the stainless steel screw that is supplied with the kit.

2.Remove the container's cap and cut the plastic membrane located in the 3/4" IPT opening in the cap. Take care to not damage the threads.

3.Find the 3/4" male adapter, apply teflon tape to the threaded end and screw it into the 3/4" IPT opening in the cap.

4.Put cap with male adapter back on the container and slide 3/4" hose over end of male adapter and fasten in place using hose clamp provided.

Delime using Flo-Jug Method

5.Slide the hose clamp over end of hose and slide hose over the male adapter in the water heater drain opening and secure in place using hose clamp.

6.Lift container to the "Pour" Position, see Figure 9, being careful to keep the vent in the handle above the liquid level and pour the UN•LIME into the heater.

7.Lower container, you may have to place the container on its empty carton to prevent the UN•LIME from flowing back into the container.

8.Let UN•LIME remain in the heater for 5 minutes and then lower the container to the "Drain" Position, see Figure 9.

9.Deliming activity is indicated by foaming on the surface of the UN•LIME. If there is deliming activity, repeat steps 6 thru 8.

Normally, lime removal will be completed within one hour. Severe build-up of lime may take longer than an hour to complete descaling.

Note: To check UN•LIME for continued use, place some scale or white chalk in a glass with a small amount of UN•LIME. If the material is vigorously dissolved by the UN•LIME, it can be reused; if not, the UN•LIME should be replaced.

CHECKLIST

Before contacting your dealer, check the water heater to see if the apparent malfunction is caused by some external fault. Consulting this checklist may eliminate the need for a repair call and restore hot water service.

NOT ENOUGH OR NO HOT WATER

1.Check to see if the pilot flame is lit.

To relight the pilot, follow the instructions on the heater or in this manual.

Check to see if the main gas shutoff valve in the gas supply pipe is partially closed or the water temperature dial is set too low.

2.Look for leaking or open hot water faucets. Check for excessive usage.

3.Your gas company can check the gas input to the heater to see that it is correct. An underfired heater will not produce hot water at its normal recovery rate.

4.If the heater was installed when incoming water temperatures were warm, colder incoming temperatures will create the effect of less hot water.

5.The thermostat water temperature adjusting dial may be set too low.

6.If you cannot determine the cause of the problems, contact your dealer.

WATER TEMPERATURE IS TOO HOT

1.The thermostat water temperature adjusting dial may be set too high.

2.If lowering control setting does not reduce the water temperature contact your dealer.

GAS SMELL AT THE HEATER

1.Close the main shutoff valve in the gas supply pipe near the heater, see fig. 4 on page 7. The thermostat includes a gas control (top knob) which can also be closed.

2.Call your gas company.

WATER LEAKAGE IS SUSPECTED

1.Check to see if the heater drain valve is tightly closed.

2.The apparent leakage might be condensation. In warm or humid locations, condensation can accumulate and run from within the heater or its piping.

When a water heater is first installed and filled, the bottom of the tank might condense water. The water accumulation,

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Image 16 Contents
Installation Operation Service Maintenance Limited Warranty Commercial GAS Water HeaterDimensions Recovery RatingsTable of Contents Installation Instructions High Altitude Installations ClearancesHard Water AIR RequirementsWater Potable Heating and Space VentingConfined Space System ConnectionsRelief Valve Vent ConnectionGAS Piping and Dirt LEG Installation GAS Meter Size GAS PipingTo Operate the Water Heater GAS Pressure RegulatorPurging Page For Your Safety Read Before Lighting What to do if YOU Smell GAS Temperature Regulation Check VentingService Information High Temperature Limit SwitchPilot and Main Burner Checking GAS InputReplacement Parts Vent SystemHOT Water Odor Anode ROD InspectionTank Cleanout Procedure Preventive MaintenanceDeliming Solvents Checklist Water Heater Makes Sounds Model BT Limited Warranty Page Smith Water Products Company