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27

checking the input

for appliance installation locations with elevations above 2000 

feet, refer to HIgH ALTITuDe INSTALLATIoNS section of this 

manual for input reduction procedure.

1.  Attach  a  pressure  gauge  or  a  manometer  to  the  manifold 

pressure tap on the gas valve and  refer to Table 10, for correct 

manifold pressure.

2.  use this formula to “clock” the meter.  Be sure that other gas 

consuming appliances are not operating during this interval.

  (3600/T) x H = Btuh

  T  =  Time in seconds to burn one cubic foot of gas.

  H = Btu’s per cubic foot of gas.

  Btuh = Actual heater input.

  example: (using N100 250Ne heater)

  T  =  15.1 seconds

  H  =  1050 Btu

  Btuh  =  ?

 

(3600/15.1) x 1050 = 250,000 (Compare with N100 250Ne 

model and rating.)

Should  it  be  necessary  to  adjust  the  gas  pressure  to  the 

burners to obtain the full input rate, the steps below should 

be followed:

3.  remove the regulator adjustment sealing cap and adjust the 

pressure by turning the adjusting screw with a screwdriver. See 

figure 25.

 

 Clockwise to increase gas pressure and input rate.

 

 Counterclockwise to decrease gas pressure and input rate.

4. “Clock” the meter as in step 2 above.

5. repeat steps 3 and 4 until the specified input rate is achieved.

6. Turn the gas control knob to PILoT.  remove the pressure 

gauge and replace the sealing cap and the Allen wrench set 

screw in the pressure tap opening.

uNDer No CIrCumSTANCeS SHouLD THe gAS INPuT eXCeeD 

THe  INPuT  SHoWN  oN  THe  HeATer  moDeL  AND  rATINg 

PLATe.  oVerfIrINg  CouLD  reSuLT  IN  DAmAge  or  SooTINg 

of  THe  HeATer.

Содержание N71120NE

Страница 1: ...y of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas suppli...

Страница 2: ...em 32 Sequence of Operation Flow Chart 33 Operational Checklist 34 Water Piping Diagrams 35 49 MANIFOLD KITS 50 Notes 51 54 Warranty 55 Table Of Contents Safe Installation Use and Service 3 General Sa...

Страница 3: ...to cause cancer birth defects or other reproductive harm and requires businesses to warn of potential exposure to such substances This product contains a chemical known to the State of California to...

Страница 4: ...ation Contact a qualified installer or service agency for installation and service Excessive gas pressure to gas valve can cause serious injury or death Do not use water heater with any gas other than...

Страница 5: ...to flow There should be no smoking or open flame near the faucet at the time it is open General Safety Information Verify the power to the water heater is turned off before performing any service pro...

Страница 6: ...as supply and electrical supply are required in addition to electrical testing skills when performing service ANSI Z223 1 2006 Sec 3 3 83 Qualified Agency Any individual firm corporation or company th...

Страница 7: ...e of high limit switch operation The following is a possible reason for high limit switch operation A malfunction in the thermostatic controls would allow the gas valve to remain open causing water te...

Страница 8: ...22 50 28 54 30 60 33 70 39 72 40 80 44 90 50 100 56 108 60 110 61 120 67 126 70 130 72 140 78 N71 120NE 120000 71 80 GPH 321 289 231 214 192 165 160 144 128 115 107 105 96 92 89 82 35 269 LPH 1214 10...

Страница 9: ...m 12 305 mm N100 250NE A 0 0 mm 0 0 mm 0 0 mm 12 305 mm N100 275NE A 0 0 mm 0 0 mm 0 0 mm 12 305 mm N85 310NE A 3 76 mm 3 76 mm 3 76 mm 12 305 mm N85 366NE A 0 0 mm 0 0 mm 0 0 mm 12 305 mm N85 390NE A...

Страница 10: ...mbustion air flow to the burners DO NOT cover the instruction manual Keep it on the side of the water heater or nearby for future reference DO obtain new warning and instruction labels from the manufa...

Страница 11: ...ing Therefore to calculate the input rating at 4 000 feet 1219m 4 x 04 x 78 000 12 480 Btuh 3 7 Kwh 78 000 22 9 Kwh 12 480 3 7 Kwh 65 520 Btuh 19 2 Kwh At 6000 feet 1829m the correct input rating shou...

Страница 12: ...pply pressure of 5 2 W C The minimum supply pressure is measured while gas is not flowing static pressure AND while gas is flowing dynamic pressure The supply pressure static and dynamic should never...

Страница 13: ...al expansion tank installed See Water Line Connections on page 19 and the Water Piping Diagrams beginning on page 34 Temperature pressure relief valve Explosion Hazard Temperature Pressure Relief Valv...

Страница 14: ...d Thermal Expansion on page 12 If you do not understand these instructions or have any questions regarding the Temperature Pressure Relief Valve call the toll free number listed on the back cover of t...

Страница 15: ...ooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are considered a part of the unconfined space Makeup air requirements for the...

Страница 16: ...gure 15 Alternatively a single permanent opening commencing within 12 inches 300 mm of the top of the enclosure shall be provided See Figure 14 The water heater shall have clearances of at least 1 inc...

Страница 17: ...aggregate input rating of all appliances installed in the enclosure Each opening shall not be less than 100 square inches 645 cm2 Outdoor Air Through Two Vertical Ducts The illustrations shown in thi...

Страница 18: ...onnector Size 6 inches 6 8 10 15 20 30 50 100 Input Btu hr Rise Vent Connector Diameter Inches 154 000 1 Ft 6 6 6 6 6 6 6 6 154 000 2 Ft 6 6 6 6 6 6 6 6 154 000 3 Ft 6 6 6 6 6 6 6 6 Number of Heaters...

Страница 19: ...Input 310 000 Btu hr T otal Vent Height Feet Vent Connector Size 6 inches 6 8 10 15 20 30 50 100 Input Btu hr Rise Vent Connector Diameter Inches 310 000 1 Ft 9 8 8 8 7 7 6 6 310 000 2 Ft 8 8 8 7 7 7...

Страница 20: ...ith a separate storage tank the circulation may be either by gravity or by means of a circulating pump When a circulating pump is used it is important to note that the flow rate should be slow so that...

Страница 21: ...in accordance with all local codes Use of the top inlet water connection requires installation of an inlet dip tube refer to figure 19 The tube is supplied in the heater Follow caution labels if apply...

Страница 22: ...ELECTRICAL GROUND IS REQUIRED TO REDUCE RISK OF ELECTRICAL SHOCK OR POSSIBLE ELECTROCUTION If any of the original wire as supplied with the appliance must be replaced use only type 105 C thermoplasti...

Страница 23: ...LATEST VERSION OF THE NATIONAL FUEL GAS CODE To prevent damage care must be taken not to apply too much torque when attaching gas supply pipe to gas valve inlet Apply joint compounds pipe dope sparing...

Страница 24: ...d avoid unnecessary service calls However the user should not attempt repairs which are not listed under the USER column GENERAL NEVER OPERATE THE HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH...

Страница 25: ...25 LIGHTING OPERATION LABEL FIGURE 22...

Страница 26: ...e normal method or if a suitable draft cannot be obtained a blower type flue gas exhauster must be employed to assure proper venting and correct combustion CHECK THE IGNITER ASSEMBLY At least once a y...

Страница 27: ...0 250 000 Compare with N100 250NE model and rating Should it be necessary to adjust the gas pressure to the burners to obtain the full input rate the steps below should be followed 3 Remove the regula...

Страница 28: ...rom chimney which will retard free draft remote storage tank temperature control The water temperature in the remote storage tank if used is controlled by the storage tank temperature control The sens...

Страница 29: ...ode rod required CAUTION The anode rod is used to protect the tank from corrosion Most hot water tanks are equipped with an anode rod The submerged rod sacrifices itself to protect the tank Instead of...

Страница 30: ...n valve opening Heater must be completely drained before introducing UN LIME deliming solvents A O Smith recommends the use of UN LIME for deliming UN LIME is a patented food grade acid which is safe...

Страница 31: ...opening and scrape out any loose deposits of scale or sediment This is an economical way to avoid unnecessary usage of the deliming solution Repeat the opening and closing of the cold water inlet valv...

Страница 32: ...art up conditions SMOKE ODOR It is not uncommon to experience a small amount of smoke and odor during the initial start up This is due to burning off of oil from metal parts and will disappear in a sh...

Страница 33: ...33 SEQUENCE OF OPERATION FLOW CHART Description of this flow chart can be found in the SEQUENCE OF OPERATION section found on page 23 FIGURE 29...

Страница 34: ...switch Water temperature too hot Thermostat set too high Set thermostat to a lower setting Heater makes sounds sizzling Condensation on outside of tank normal Rumbling Sediment accumulation on bottom...

Страница 35: ...s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control MULTI FLUE 1 UNIT WITH VERTICAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CI...

Страница 36: ...ostat should be set 5 degrees F higher than the Tank Temperature Control MULTI FLUE 1 UNIT WITH HORIZONTAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP...

Страница 37: ...and the storage tank s MULTI FLUE 1 UNIT WITH MIXING VALVE TWO TEMPERATURE LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BAL...

Страница 38: ...mp between the water heater s and the storage tank s MULTI FLUE 2 UNITS LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VA...

Страница 39: ...tat should be set 5 degrees F higher than the Tank Temperature Control MULTI FLUE 2 UNITS WITH VERTICAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TAN...

Страница 40: ...tat should be set 5 degrees F higher than the Tank Temperature Control MULTI FLUE 2 UNITS WITH VERTICAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TAN...

Страница 41: ...t should be set 5 degrees F higher than the Tank Temperature Control MULTI FLUE 2 UNITS WITH HORIZONTAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TAN...

Страница 42: ...EMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SU...

Страница 43: ...VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES C...

Страница 44: ...LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING...

Страница 45: ...an the Tank Temperature Control MULTI FLUE 3 UNITS WITH VERTICAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT B...

Страница 46: ...than the Tank Temperature Control MULTI FLUE 3 UNITS WITH HORIZONTAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PO...

Страница 47: ...RE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPERATURE GAGE WATER FLOW SWITCH CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED...

Страница 48: ...perature Control MULTI FLUE 4 UNITS WITH VERTICAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE TEMPE...

Страница 49: ...emperature Control MULTI FLUE 4 UNITS WITH HORIZONTAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN FULL PORT BALL VALVE T...

Страница 50: ...003426205 THREE UNIT MANIFOLD KIT PART NO 9003427205 FOUR UNIT MANIFOLD KIT PART NO 9003428205 MODEL DIMENSION A N71 120NE 63 N81 154NE 68 N100 180NE 72 N100 199NE 72 N100 200NES 72 N100 250NE 72 N100...

Страница 51: ...notes 51...

Страница 52: ...notes 52...

Страница 53: ...notes 53...

Страница 54: ...notes 54...

Страница 55: ...heater s and operational at all times The relief valve installed on the heater is not an acceptable method 4 SERVICE AND REPAIR EXPENSES s t s o c r e h t o l l a r o f e l b i s n o p s e r s i r e...

Страница 56: ...Copyright 2010 Reliance Water Heater Company All rights reserved www reliancewaterheaters com 500 Tennessee Waltz Parkway Ashland City TN 37015 Tech Support 800 365 4054 Parts 800 821 2017...

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