American Water Heater Commercial Light Duty Electric Water Heaters Lowboy Standard and Upright Series User Manual

11
ELECTRICAL
GENERAL
The installation must conform with these instructions and the local 
code authority having jurisdiction and the requirements of the power 
company. In the absence of local codes, the installation must comply 
with the current editions of the National Electrical Code, NFPA 70 or 
the Canadian Electrical Code CSA C22.1. 
An  electrical  ground  is  required  to  reduce  risk  of  electrical  shock 
or  possible  electrocution.  The  water  heater  should  be  connected 
to  a...

12
FIGURE 3 
WIRING DIAGRAMS
C-2 CIRCUIT 
FOR Lowboy 6/10/15/20 
HEATERS EQUIPPED WITH  HIGH LIMIT CONTROL
A-8 CIRCUIT FOR DUAL ELEMENT HEATER
 FACTORY WIRED
----------  FIELD WIRING
†     WHITE FOR 120V & 277V  

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OPERATION
GENERAL
Refer to the Features and Components section of this manual (page 
7)  for  the  location  of  components  mentioned  in  the  instructions 
that follow.
NEVER turn on power to the water heater without being certain the 
water  heater  is  filled  with  water  and  a  temperature  and  pressure 
relief valve is installed in the relief valve opening.
DO  NOT  TEST  ELECTRICAL  SYSTEM  BEFORE  HEATER  IS 
FILLED  WITH  WATER.  FOLLOW  FILLING  AND  START-UP 
INSTRUCTIONS IN OPERATION...

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THE  WATER  HEATER  IS  EQUIPPED  WITH  AN  ADJUSTABLE 
THERMOSTAT  TO  CONTROL  WATER  TEMPERATURE.  HOT 
WATER  AT  TEMPERATURES  DESIRED  FOR  AUTOMATIC 
DISHWASHER  AND  LAUNDRY  USE  CAN  CAUSE  SCALDS 
RESULTING  IN  SERIOUS  PERSONAL  INJURY AND/OR  DEATH. 
THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH 
THE PERSON’S AGE AND TIME OF EXPOSURE. THE SLOWER 
RESPONSE TIME OF CHILDREN , AGED OR DISABLED PERSONS 
INCREASES  THE  HAZARD  TO  THEM.  NEVER  ALLOW  SMALL 
CHILDREN TO USE A HOT WATER...

15
GENERAL
Periodically  the  drain  valve  should  be  opened  and  the  water 
allowed to run until it flows clean. This will help to prevent sediment 
buildup in the tank bottom.
Periodically  check  the  temperature  and  pressure  relief  valve  to 
ensure  that  it  is  in  operating  condition.  Lift  the  lever  at  the  top 
of  the  valve  several  times  until  the  valve  seats  properly  and 
operates freely.
Water  heater  maintenance  includes  periodic  tank  flushing  and 
cleaning, and...

16
TROUBLESHOOTING CHECKLIST
CHECKLIST
Before  calling  for  service,  check  the  following  points  to  see  if  the 
cause of trouble can be identified and corrected.
Reviewing  this  checklist  may  eliminate  the  need  of  a  service  call 
and quickly restore hot water service. See Figure 2 on page 7 in this 
manual to identify and locate water heater components.
NOT ENOUGH OR NO HOT WATER
1. Be certain the electrical disconnect switch serving the water heater 
is in the ON position.
2.  Check the...

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LEAKAGE CHECKPOINTS
Instructions: Use this illustration as a guide when checking for sources of water leakage. You or your dealer may be able to correct what 
appears to be a problem.  NOTE:	Cover	and	Insulation	shown	removed	to	reveal	tank	top.
Relief Valve
To Open Drain
Condensation and dripping may appear 
on pipes when cold water temperature is 
low.	Pipe	fitting	may	be	leaking. Relief valve operation and leakage 
may be due to water expansion during 
heating cycle or foreign material on seat 
of...

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 EFFECTIVE
For 3 Years, in the event of a tank leak, we will repair or, at our 
discretion, replace the defective water heater.
For 1 Year, in the event of part failure, we will repair or, at our 
discretion, replace the defective part.
We  warrant  this  product  against  defects  in  materials  or 
workmanship  as  described  in  this  document  if  installed  within 
the United States or Canada and provided the product remains 
at its original place of installation.
Warranty coverage begins the...

19
NOTES 

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REPAIR PARTS LIST
Now that you have purchased this water heater, should a need ever 
exist for repair parts or service, simply contact the company it was 
purchased from or direct from the manufacturer listed on the rating 
plate on the water heater.
Selling prices will be furnished on request or parts will be shipped 
at prevailing prices and you will be billed accordingly.
The model number of your Water Heater will be found on the rating 
plated located above the lower access panel.Be sure to...