American Water Heater 40-42K Installation Instructions Manual Download Page 15

15

OPERATING YOUR WATER HEATER

Lighting Instructions

Read and understand these directions thoroughly before 

attempting to operate the water heater. Make sure the 

tank is completely filled with water before operating the 

water heater. Check the data plate near the gas control 

valve/thermostat for the correct gas. Do not use this 

water heater with any gas other than the one listed on 

the data plate. If you have any questions or doubts, 

consult your gas supplier or gas utility company.

Explosion Hazard

Replace viewport if glass is 
missing or damaged.

Failure to do so can result in 
death, explosion or fire.

WARNING

FOR YOUR SAFETY READ BEFORE LIGHTING

OPERATING INSTRUCTIONS

TO TURN OFF GAS TO APPLIANCE

1.   STOP! Read the safety information 
 

above on this label.

2.  Connect to a grounded 110/120 volt power 

supply.

3.  Set the thermostat to the lowest setting by first 

pressing the COOLER          and HOTTER 
buttons together and holding for 1 second. Then 
press the COOLER          button until the WARM 
indicator light appears.

4.  This appliance is equipped with a device which 

automatically lights the burner.

 

DO NOT TRY TO LIGHT THE BURNER BY HAND.

5.   Wait five minutes to clear out any gas. If you then 

smell gas. STOP! Follow the “B” in the safety 
information above on this label. If you don’t smell 
gas, go to the next step.

6.  Set the thermostat to the desired setting by first 

pressing the COOLER           and HOTTER  
buttons together and holding for 1 second. Then 
press the HOTTER           button.

7.   WATER TEMPERATURE ADJUSTMENT  

is approximately 120°F.
CAUTION: Hotter water increases the risk of scald 

injury. Consult the instruction manual before 

changing the temperature.

8.  If the appliance will not operate, follow the 

instructions “TO TURN OFF GAS APPLIANCE” 

and call a qualified person or gas supplier.
WARNING: TURN OFF ALL ELECTRIC POWER 

BEFORE SERVICING.

1.  Set the thermostat to the lowest setting by first 

pressing the COOLER          and HOTTER
buttons together and holding for 1 second. Then 
press the COOLER      button until the WARM 
indicator light appears.

2.  Unplug electrical service to the appliance if 

service is to be performed.

WARNING: 

If you do not follow these instructions exactly, a fire or explosion 

may result causing property damage, personal injury or loss of life.

A.  This appliance does not have a pilot. It is equipped with 

an ignition device which automatically lights the burner. 
Do not try to light the burner by hand.

B.  BEFORE LIGHTING smell all around the appliance area 

for gas. Be sure to smell next to the floor because some 
gas is heavier than air and will settle on the floor.

 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 supplier from a 

neighbor’s phone. Follow the gas supplier’s 
instructions. 

• 

If you cannot reach your gas supplier, call 
the fire department.

C.  Do not use this appliance if any part has been 

under water. Immediately call a qualified service 
technician to inspect the appliance. Water heaters 
subjected to flood conditions or anytime the gas 
controls, main burner or pilot have been 
submerged in water require replacement of the 
entire water heater.

Summary of Contents for 40-42K

Page 1: ...e performed by a qualified installer service agency or the gas supplier WARNING If the information in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or death To obtain technical warranty or service assistance during or after the installation of this water heater visit our website at http www americanwaterheater com or call toll fre...

Page 2: ...em If hydrogen is present there will probably be an unusual sound such as air escaping through the faucet as water begins to flow Do not smoke or have any open flame near the faucet at the time it is open The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known to the State of California to cause cancer birth defects or ...

Page 3: ...vice to the Power Direct Vent System should only be performed by a qualified person If you lack the necessary skills required to properly install this water heater or you have difficulty following the instructions you should not proceed but have a qualified person perform the installation of this water heater Massachusetts code requires this water heater to be installed in accordance with Massachu...

Page 4: ...xplosion Hazard Read instruction manual before installing using or servicing water heater Improper use may result in fire or explosion Maintain required clearances to combustibles Keep combustibles such as boxes magazines clothes etc away from the water heater area Site Location Select a location near the center of the water piping system The water heater must be installed indoors and in a vertica...

Page 5: ...stion air flow Locate the water heater near a suitable indoor drain Outside drains are subject to freezing temperatures which can obstruct the drain line The piping should be at least 3 4 ID and pitched for proper drainage 1 3 4 max At least 2 greater than the water heater and the inlet air pipe Pipe to an adequate drain NOTE Minimum clearances from combustible materials are stated on the data pla...

Page 6: ...rrect any leak found Gas Pressure IMPORTANT The gas supply pressure must not exceed the maximum supply pressure as stated on the water heater s data plate The minimum supply pressure is for the purpose of input adjustment Gas Pressure Testing IMPORTANT This water heater and its gas connection must be leak tested before placing the appliance in operation If the code requires the gas lines to be tes...

Page 7: ...irement also applies to 3 inch diameter piping configurations Vent Pipe Material The following plastic materials may be used for both the combustion air inlet and exhaust outlet piping subject to state and local codes 2 or 3 inch Schedule 40 PVC or ABS 2 or 3 inch Schedule 40 or 80 CPVC DWV Pipe is acceptable NOTE Use only solid not foam core piping Plastic pipe and fittings are available through ...

Page 8: ...d maximum lengths are for the separate inlet and exhaust pipe systems and not the combined length of both systems Minimum pipe length is 3 feet with one elbow per side 1 Determine termination type and pipe size 2 Determine number of elbows in exhaust pipe Do not include elbows in the termination Corresponding number indicates the maximum length of exhaust pipe 3 Determine number of elbows in inlet...

Page 9: ...rea where children or animals could block pipes 5 Do not locate the vent terminal too close to shrubs or bushes 6 Caulk all cracks seams and joints within 6 feet horizontally above and below the vent Figure 4 Minimum Termination Clearance for Outlet Vent A 12 in 30 cm min clearance above grade veranda porch deck balcony or maximum anticipated snow level B 12 in 30 cm min clearance on top or 4 ft c...

Page 10: ... customer service at 1 800 456 9805 for assistance To prevent potential condensate from collecting in the venting system slope the vent at a downward pitch of 1 8 per 5ft away from the water heater INLET OUTLET VENT TERMINATIONS Standard Horizontal Termination The standard horizontal air inlet termination is a 2 inch or 3 inch pipe which terminates at the exterior wall and utilizes a coupling to p...

Page 11: ...mmends installing a tempering valve or an anti scald device in the domestic hot water line as shown in Figure 9 These valves reduce the point of use temperature of the water by mixing cold and hot water and are readily available for use Point of use devices for reducing scald hazards that attach to faucets and shower heads are also available from plumbing supply houses Contact a licensed plumber o...

Page 12: ...re relief valve to discharge small quantities of hot water This is an unacceptable condition and must be corrected To prevent this it is recommended that a diaphragm type expansion tank suitable for potable water be installed on the cold water supply line The expansion tank must have a minimum capacity of 1 5 U S gallons for every 50 gallons of stored water Contact the local water supplier or plum...

Page 13: ...llow complete drainage of both the valve and discharge line IMPORTANT Do not use an extension cord to connect the water heater to an electrical outlet The water heater and the outlet are properly grounded Installed in accordance with prevailing provisions of local codes or in the absence of such National Electric Code ANSI NFPA 70 NOTE Always reference the wiring diagram for the correct electrical...

Page 14: ...sions of local codes or in the absence of such National Fuel Gas Code NFPA 54 ANSI Z223 1 Current Edition Slope 2 3 horizontal piping at a downward pitch of 1 8 per 5ft away from the water heater Not obstructed in any way Vent Termination Concentric 12 Min above grade snow level Slope exhaust outlet air inlet piping at a downward pitch of 1 8 per 5ft away from the water heater Horizontal Correct r...

Page 15: ...ADJUSTMENT is approximately 120 F CAUTION Hotter water increases the risk of scald injury Consult the instruction manual before changing the temperature 8 If the appliance will not operate follow the instructions TO TURN OFF GAS APPLIANCE and call a qualified person or gas supplier WARNING TURN OFF ALL ELECTRIC POWER BEFORE SERVICING 1 Set the thermostat to the lowest setting by first pressing the...

Page 16: ...ns such as a mixing valve should be used at the hot water taps used by these people or at the water heater Mixingvalvesareavailableatplumbingsupplyorhardwarestores seeFigure9 Followmanufacturer sinstructionsforinstallationof the valves Before changing the factory setting on the thermostat see Figure 13 and the table below Using the lowest hot water temperature that meets your needs will also provi...

Page 17: ...roduced from the presence of hydrogen sulfide gas dissolved in the water IMPORTANT Do not remove this rod permanently as it will void any warranties The parts list includes a special anode that can be ordered if water odor or discoloration occurs NOTE This rod may reduce but not eliminate water odor problems The water supply system may require special aeration or chlorination equipment from a wate...

Page 18: ...rioration in the venting system Make sure the ventilation and combustion air supplies are not obstructed Build up of soot and carbon on the main burner and pilot burner Check for a soft blue flame Leaking or damaged water and gas piping Presence of flammable or corrosive materials in the installation area Presence of combustible materials near the water heater Verify proper operation after servici...

Page 19: ... on the manifold tube 6 Grasp the manifold tube and push down slightly to free the manifold from the gas control valve thermostat 7 Carefully remove the manifold assembly from the burner compartment Be sure not to damage internal parts 8 Check the burner to see if it is dirty or clogged The burner may be cleaned with soap and hot water Removing the Burner from the Manifold Assembly 1 Take off the ...

Page 20: ...t off valve on the gas supply pipe Figure 2 4 Drain the water heater Refer to the Draining and Flushing section and follow the procedure 5 Disconnect the flame sense hot surface igniter wire from the thermostat Disconnect the manifold tube at the thermostat Figure 16 NOTE L P gas systems use reverse left hand threads on the manifold tube 6 Refer to Gas Piping Figure 2 and disconnect the ground joi...

Page 21: ...k that all wiring is correct and secure 2 Replace hot surface igniter System in lockout 1 Gas supply is off or too low to operate 2 Hot surface igniter not positioned correctly 3 Low voltage to the water heater 4 Electric polarity to unit is incorrect test and cor rect Problem in the gas valve driver circuit 1 Turn power to the water heater off for 10 seconds and then back on 2 Replace gas control...

Page 22: ...and gas clean burner head B Combustion air path restricted Check intake venting arrangements for obstructions C Not enough dilution air for proper combustion Check intake venting arrangements for obstructions CONDENSATION A Water on the floor under heater See OPERATIONAL CONDITIONS section B Water dripping from blower assembly Provide drip TEE to catch condensation from horizontal section of exhau...

Page 23: ...Natural Gas Burner 13 L P Gas Burner 14 Manifold Door Assembly Natural Gas 15 Manifold Door Assembly L P Gas 16 Two Piece Wire Connector w Retainer Clip 17 Manifold Door Gasket 18 Viewport Assembly 19 Outer Door When ordering repair parts always give the following information 1 Model serial and product number 2 Type of gas 3 Item number 4 Parts description Repair Parts List Special anode rod avail...

Page 24: ...hot surface igniter assembly Natural Gas Item 15 Manifold door assembly which contains the manifold tube gasket manifold door two piece wire connector with retainer clip and flame sense hot surface igniter assembly L P Gas Item 16 Contains two piece wire connector with retainer clip Item 17 Contains manifold door gasket Item 18 Contains viewport 2007 American Water Heater Company All Rights Reserv...

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