Справочник Пользователя для American Water Heater Commercial Ultra Low NOx Gas water Heater

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DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN UNDER 

WATER. Immediately call a qualified service technician to inspect the 

appliance and to replace any part of the control system and any gas 

control which has been under water.

IF THE UNIT IS EXPOSED TO THE FOLLOWING, DO NOT OPERATE 

HEATER UNTIL ALL CORRECTIVE STEPS HAVE BEEN MADE BY A 

QUALIFIED SERVICEMAN.

1.  EXTERNAL FIRE.

2. DAMAGE.

3.  FIRING WITHOUT WATER.

4. SOOTING.

Heater must be protected from freezing downdrafts during shutdown periods.

This water heater must be grounded in accordance with the National 

Electrical Code and/or local codes. These must be followed in all cases.

This water heater must be connected to a grounded metal, permanent 

wiring system; or an equipment grounding conductor must be run with 

the circuit conductors and connected to the equipment grounding terminal 

or lead on the water heater, see Figure 5.

                                                                                                              

ROUGH-IN DIMENSIONS .............................................................  2

FOREWORD .................................................................................  2

GENERAL SAFETY INFORMATION .............................................  2-4 

Precautions....................................................................................  3

  Grounding Instructions...............................................................  3

  Chemical Vapor Corrosion .........................................................  3

  Extended Non-use Periods ........................................................  3

  Insulation Blankets.....................................................................  4

  High Altitude Installations...........................................................  4

  Circulating Pump .......................................................................  4

INSTALLATION INSTRUCTIONS .................................................  4-9 

Required Ability..............................................................................  4

  Locating The Heater ..................................................................  4

 Clearances.................................................................................  5

  Hard Water ................................................................................  5

  Air Requirements .......................................................................  5 

 Venting .......................................................................................  6

  Thermometers (Not Supplied) ...................................................  7

  Combination Water (Potable) Heating and Space Heating .......  7

  Relief Valve ................................................................................  7

  Gas Piping .................................................................................  7

  Heater Wiring .............................................................................  8

  Wiring Diagram ..........................................................................  8 

 Purging ......................................................................................  9

  Gas Pressure Regulation..........................................................  9

OPERATION .................................................................................  9

  To Operate The Heater .............................................................  9

  Lighting Instructions ..................................................................  10

  Temperature Regulation ...........................................................  11

  Checking Venting ......................................................................  11

  High Temperature Limit Switch .................................................  11

SERVICE INFORMATION ............................................................  12-13

  Main Burner and Igniter ............................................................  12

  Checking Gas Input ..................................................................  12

  Vent System..............................................................................  12

  Blower Maintenance .................................................................  13

  Relief Valve ...............................................................................  13

  Hot Water Odor .........................................................................  13

  Winter Protection ......................................................................  13

  Replacement Parts ...................................................................  13

PREVENTIVE MAINTENANCE ....................................................  13-14

  Procedure for Periodic Removal Of Lime Deposits ..................  13

  Deliming Solvents .....................................................................  13

  Tank Cleanout Procedure .........................................................  14

CHECKLIST .................................................................................  15-16

 Condensation............................................................................  15

 Anode .......................................................................................  15

  Service & Repair .......................................................................  16

TROUBLESHOOTING .................................................................  17-20

NOTES .........................................................................................  21-22

LIMITED WARRANTY ...................................................................  23

CORROSION OF THE FLUEWAYS AND VENT SYSTEM MAY OCCUR IF 

AIR FOR COMBUSTION CONTAINS CERTAIN CHEMICAL VAPORS.  SUCH 

CORROSION MAY RESULT IN FAILURE AND RISK OF ASPHYXIATION.

Spray can propellants, cleaning solvents, refrigerator and air conditioning 

refrigerants, swimming pool chemicals, calcium and sodium chloride (water 

softener salt), waxes, and process chemicals are typical compounds which 

are potentially corrosive.  Do not store products of this sort near the heater.  

Also, air which is brought in contact with the heater should not contain 

any of these chemicals.  If necessary, uncontaminated air should be 

obtained from remote or outside sources.  The limited warranty is voided 

when failure of water heater is due to a corrosive atmosphere.  (Refer to 

the limited warranty for complete terms and conditions.)

HYDROGEN GAS CAN BE PRODUCED IN A HOT WATER SYSTEM 

SERVED BY THIS HEATER THAT HAS NOT BEEN USED FOR A LONG 

PERIOD OF TIME (GENERALLY TWO WEEKS OR MORE). HYDROGEN 

GAS IS EXTREMELY FLAMMABLE.

 To reduce the risk of injury under 

these conditions, it is recommended that the hot water faucet be opened 

for several minutes at the kitchen sink before using any electrical appliance 

connected to the hot water system. If hydrogen is present, there will 

probably be an unusual sound such as air escaping through the pipe as 

the water begins to flow. 

THERE SHOULD BE NO SMOKING OR OPEN 

FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN.