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24

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 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.

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.

If the temperature-pressure relief valve on the appliance weeps or 

discharges periodically, this may be due to thermal expansion. You 

may have a check valve installed in the water line or a water meter 

with a check valve. Consult your local water supplier or service 

technician for  further information. Do not plug the temperature-

pressure relief valve.

DRAINING AND FLUSHING

It  is  recommended  that  the  water  heater  storage  tank  be 

drained  and  flushed  every  6  months  to  reduce  sediment 

buildup. The water heater should be drained if being shut down 

during  freezing  temperatures.  See  Installation  Considerations 

in this manual for the location of the water heater components 

described below.

Burn harzard.

Hot water discharge.

Keep  hands   clear  of  drain

valve  discharge.

TO DRAIN THE WATER HEATER STORAGE TANK:

1. 

Turn off the gas supply at the Main Gas Shutoff Valve if the 

water heater is going to be shut down for an extended period. 

2. 

Ensure the cold water inlet valve is open.

3. 

Open a nearby hot water faucet and let the water run until 

the water is no longer hot.

4. 

Close the cold water inlet valve to the water heater.

5. 

Connect  a  hose  to  the  water  heater  drain  valve  and 

terminate it to an adequate drain.

6.  Open the water heater drain valve and allow all the water to 

drain from the storage tank.

7.  Close the water heater drain valve when all water in the 

storage tank has drained.

8. 

Close the hot water faucet opened in Step 4.

9. 

If the water heater is going to be shut down for an extended 

period, the drain valve should be left open.

TO FLUSH THE WATER HEATER STORAGE TANK:

1. 

Ensure the cold water inlet valve is open.

2. 

Open a nearby hot water faucet and let the water run until 

the water is no longer hot. Then close the hot water faucet.

3. 

Connect a hose to the drain valve and terminate it to an 

adequate drain.

4. 

Ensure  the  drain  hose  is  secured  before  and  during  the 

entire  flushing  procedure.  Flushing  is  performed  with 

system water pressure applied to the water heater. 

5. 

Open the water heater drain valve to flush the storage tank. 

6. 

Flush the water heater storage tank to remove sediment 

and allow the water to flow until it runs clean.

7. 

Close  the  water  heater  drain  valve  when  flushing  is 

completed.

8. 

Remove the drain hose.

9. 

Fill the water heater - see Filling The Water Heater in this manual.

10. 

Turn on the gas supply to the water heater at the Main Gas 

Shutoff Valve.

11. 

Allow the water heater to complete several heating cycles 

to ensure it is operating properly.

SERVICE

Before calling for repair service, read the “Start Up Conditions” and 

“Operational Conditions” found in the “For Your Information” section 

of this manual.

If a condition persists or you are uncertain about the operation of the 

water heater contact a service technician. If you are not thoroughly 

familiar with gas codes, your water heater, and safety practices, contact 

your gas supplier or qualified installer to check the water heater.

Use  the  ”Leakage  Checkpoints”  guide  to  check  a  “Leaking” 

 

water heater.  Many suspected “Leakers” are not leaking tanks.  Often 

the source of the water can be found and corrected.

Read this manual first. Then before checking the water heater make 

sure the gas supply has been turned “OFF”, and never turn the gas 

“ON” before the tank is completely full of water.

Never use this water heater unless it is completely filled with water.  

To prevent damage to the tank, the tank must be filled with water.  

Water must flow from the hot water faucet before turning “ON” gas 

to the water heater.

Содержание BL-80

Страница 1: ...safety messages could result in death or serious injury This manual must remain with the water heater 500 Tennessee Waltz Parkway Ashland City TN 37015 Low Lead Content WARNING If the information in t...

Страница 2: ...gs for Confined Spaces 13 Outdoor Air Through Two Openings 13 Outdoor Air Through One Opening 13 Outdoor Air Through Two Horizontal Ducts 14 Outdoor Air Through Two Vertical Ducts 14 Air From Other In...

Страница 3: ...hazard what can happen if you do not follow the safety message and how to avoid the risk of injury DANGER WARNING CAUTION CAUTION DANGER indicates an imminently hazardous situation which if not avoide...

Страница 4: ...4 GENERAL SAFETY INFORMATION...

Страница 5: ...you don t follow the safety rules the water heater will not operate properly It could cause DEATH SERIOUS BODILY INJURY AND OR PROPERTY DAMAGE This manual contains instructions for the installation op...

Страница 6: ...2 1 1 2 12 1 2 CM 157 6 147 3 74 9 64 1 40 3 10 2 38 7 40 6 5 1 NPT NPT 31 8 Model INPUT RATE F 30 40 50 60 70 80 90 100 110 120 130 140 GPH 246 184 147 123 105 92 82 74 67 61 57 53 C 17 22 28 33 39 4...

Страница 7: ...vicing and proper operation of the water heater Installation of water heater must be accomplished in such a manner that if the tank or any connections should leak flow will not cause damage to the str...

Страница 8: ...per and inefficient operation of the water heater producing carbon monoxide gas in excess of the safe limits This could result in serious injury or death Contact your local gas supplier for any specif...

Страница 9: ...rtain it does not sag thereby obstructing the combustion air flow HARD WATER Where hard water conditions exist water softening or the threshold type of water treatment is recommended This will protect...

Страница 10: ...manufacturer s specifications If a positive lock up regulator is required follow these instructions 1 Positive lock up gas pressure regulators must be rated at or above the input Btu hr rating of the...

Страница 11: ...s not intended for the constant relief of thermal expansion A properly sized thermal expansion tank must be installed on all closed systems to control the harmful effects of thermal expansion Contact...

Страница 12: ...ature Pressure Relief Valve discharge line and 2 the water manually discharged will not cause any bodily injury or property damage because the water may be extremely hot If after manually operating th...

Страница 13: ...eater and the risk of fire or explosion may result It can also create a risk of asphyxiation LOUVERS AND GRILLES Thefreeareasofthefreshairopeningsintheinstructionsthatfollowdonot takeintoaccountthepre...

Страница 14: ...e provided with two permanent vertical ducts one commencing within 12 inches 300 mm of the top and one commencing within 12 inches 300 mm of the bottom of the enclosure The vertical ducts shall commun...

Страница 15: ...er heater unless it is vented to the outdoors and has adequate air supply to avoid risks of improper operation explosion or asphyxiation Align the legs of the draft hood with the holes provided Insert...

Страница 16: ...IN INCHES MAXIMUM CAPACITY OF PIPE IN CUBIC FEET PER HOUR LENGTH IN FEET NOMINAL IRON PIPE SIZES INCHES INPUT IN THOUSANDS BTU HR 1 2 3 4 1 1 1 4 1 1 2 2 2 1 2 3 4 10 175 360 680 1400 2100 3960 6300 1...

Страница 17: ...allation shown in the Figures 15 and 16 Contaminants in the gas lines may cause improper operation of the gas control valve that may result in fire or explosion Before attaching the gas line be sure t...

Страница 18: ...ter several tries turn the gas control knob clockwise to OFF and call your service technician or gas supplier SEE FIGURE A DANGER Hotter water increases the risk of scald injury Consult the instructio...

Страница 19: ...r at the water heater Mixing valves are available at plumbing supply or hardware stores see Figure 6 Follow manufacturer s instructions for installation of the valves Before changing the factory setti...

Страница 20: ...See Condensation in this section OPERATIONAL CONDITIONS SMELLY WATER In each water heater there is installed at least one anode rod for corrosion protection of the tank Certain water conditions will c...

Страница 21: ...replaced At least once a year a visual inspection should be made of the main burner and pilot burner see Figure 19 Inspect burner fl ames through viewport Flames should be very small with a blue haze...

Страница 22: ...ter temperature and usage see chart The higher the water temperature or water usage the more lime deposits are dropped out of the water This is the lime scale which forms in pipes heaters and on cooki...

Страница 23: ...drained before opening cleanout To clean heater through cleanout opening proceed as follows 1 Drain heater 2 Remove outer cover plate from lower side of heater jacket 3 Remove six 6 hex head screws se...

Страница 24: ...er is no longer hot 4 Close the cold water inlet valve to the water heater 5 Connect a hose to the water heater drain valve and terminate it to an adequate drain 6 Open the water heater drain valve an...

Страница 25: ...an condense on the cooler surfaces of the tank Droplets form and drip onto the burner or run on the floor This is common at the time of start up after installation and when incoming water is cold I Wa...

Страница 26: ...Gas Control Replace Gas Control PILOT OUTAGE Dirty pilot burner Clean pilot assembly Thermocouple malfunction Replace pilot assembly and or thermocouple Defective Gas Control Replace Gas Control Ther...

Страница 27: ...ocal codes shall govern their usage 4 The Tank Temperature Control should be wired to and control the pump between the water heater s and the storage tank s 5 The water heater s operating thermostat s...

Страница 28: ...trol should be wired to and control the pump between the water heater s and the storage tank s 5 The water heater s operating thermostat should be set 5 degrees F higher than the Tank Temperature Cont...

Страница 29: ...Control should be wired to and control the pump between the water heater s and the storage tank s 5 The water heater s operating thermostat should be set 5 degrees F higher than the Tank Temperature C...

Страница 30: ...ired to and control the pump between the water heater s and the storage tank s 5 The water heater s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control SINGLE FLUE...

Страница 31: ...rature Control should be wired to and control the pump between the water heater s and the storage tank s 5 The water heater s operating thermostat should be set 5 degrees F higher than the Tank Temper...

Страница 32: ...he pump between the water heater s and the storage tank s 5 The water heater s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control SINGLE FLUE 2 UNITS TWO TEMPERATU...

Страница 33: ...33 NOTES...

Страница 34: ...34 NOTES...

Страница 35: ...gas type venting connections combustion air voltage wiring or fusing Failure to follow applicable codes Failure to follow printed instructions Improper installation sizing delivery or maintenance Cla...

Страница 36: ...36 500 Tennessee Waltz Pkwy Ashland City TN 37015 Technical Support 800 527 1953 Parts 800 433 2545 www hotwater com Copyright 2014 A O Smith Corporation All rights reserved...

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