American Water Heater 80 Thermal Efficiency UltraLow NOx Heavy Duty Commercial Gas Water Heater BCL3 User Manual

							 COMMERCIAL GAS WATER HEATERS
Instruction Manual
PRINTED 1215  327508-005
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
Thank you for buying this energy efficient water heater. 
We appreciate your confidence in our products.
MODELS
BCL380T1206NOX, BCL380T1546NOX, 
BCL380T1806NOX, BCL380T1996NOX, 
BCL3100T1996NOX, (A)BCL3100T2506NOX,   
(A)BCL3100T2756NOX, (A)BCL386T3106NOX,   
(A)BCL386T3666NOX, (A)BCL386T3906NOX
Ultra Low NOx SERIES 200
INSTALLATION - OPERATION - SERVICE - MAINTENANCE - 
LIMITED WARRANTY
Complies with SCAQMD Low NOx Rule 1146.2
WARNING:  If   the information   in   these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do  not store  or  use  gasoline  or other
flammable   vapors  and  liquids   in  the
vicinity 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   supplier
from a  neighbor’s  phone.   Follow the
gas supplier’s instructions.
If you cannot  reach your  gas supplier,
call the fire department.
Installation     and    service    must    be
performed   by   a    qualified    installer,
service agency or the gas supplier.•
•
•
•
Read and understand this instruction
m anual and the safety message s
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in deat h
or serious injury.
T his manual must remain with th e
water heater.
www .americanwaterheate r.co m
American Wa ter Heater
Johnson City, TN 37605 
						

							2
VENTING INSTALLATION ...................................................... 18
Venting  ............................................................................... 18
Multiple Heater Manifold  .................................................... 18
WATER HEATER INSTALLATION  ...........................................21
Water Line Connections  ..................................................... 21
T&P Valve Discharge Pipe  ................................................. 21
Installation Diagrams - Top Inlet/Outlet Usage  ...................22
Heater Wiring  ..................................................................... 23
Gas Piping .......................................................................... 24
Gas Line Leak Testing  ........................................................ 24
Purging  ............................................................................... 24
START UP  ............................................................................... 25
Prior to Start Up  ................................................................. 25
Initial Start Up ..................................................................... 25
Checking Venting  ............................................................... 26
Checking the Input  ............................................................. 26
Water Temperature Adjustment  ..........................................26
SEQUENCE OF OPERATION  ................................................27
Lighting & Operating Label ................................................. 27
Sequence of Operation Flow Chart  .................................... 28
MAINTENANCE   ..................................................................... 29
Venting System  .................................................................. 29
Intake Air Screen  ................................................................ 29
Temperature-Pressure Relief Valve Test  ............................29
Anode Rod Inspection  ........................................................ 29
Draining and Flushing  ........................................................ 30
Periodic Removal of Lime Deposits from Tank Type Commercial 
Water Heaters  .................................................................... 30
Deliming Solvents  .............................................................. 30
Tank Cleanout Procedure ................................................... 31
Deliming Using Flo-Jug Method  ......................................... 31
SERVICE  ................................................................................. 32
Ignition Control System  ...................................................... 32
System Diagnostics............................................................ 32
Electrical Servicing  ............................................................. 32
FOR YOUR INFORMATION  .................................................... 33
Start Up Conditions  ............................................................ 33
Operational Conditions ....................................................... 33
TROUBLESHOOTING  ............................................................ 34
WATER PIPING DIAGRAMS  ................................................... 35
NOTES  .................................................................................... 50
LIMITED WARRANTY  ............................................................. 51
TABLE OF CONTENTS
SAFE INSTALLATION, USE AND SERVICE .............................3
APPROVALS  ............................................................................. 3
GENERAL SAFETY INFORMATION  .........................................4
Precautions  .......................................................................... 5
Grounding Instructions  ......................................................... 5
Hydrogen Gas Flammable  ................................................... 5
INTRODUCTION  ....................................................................... 6
Abbreviations Used  .............................................................. 6
Qualifications ........................................................................ 6
Preparing for the Installation  ................................................ 6
FEATURES AND  COMPONENTS  ............................................6
Controls  ................................................................................ 6
The Eliminator (self-cleaning system)  .................................. 6
High Limit Switch.................................................................. 7
Electronic Ignition Control  .................................................... 7
Blower/Burner Assembly  ...................................................... 7
INSTALLATION CONSIDERATIONS  ........................................8
Rough In Dimensions  ........................................................... 8
Locating the Water Heater  ................................................... 9
Clearances  ........................................................................... 9
NSF Leg Kit  ........................................................................ 10
Insulation Blanket  ............................................................... 10
Hard Water  ......................................................................... 10
Circulation Pumps  .............................................................. 10
High Altitude Installations  ................................................... 11
INSTALLATION REQUIREMENTS  .........................................12
Gas Supply Systems  .......................................................... 12
Gas Pressure Requirements  .............................................. 12
Supply Gas Regulator  ........................................................ 12
Power Supply  ..................................................................... 12
Water Temperature Control and Mixing Valves  ..................12
Dishwashing Machines  ...................................................... 13
Closed Water Systems  ....................................................... 13
Thermal Expansion  ............................................................ 13
Temperature-Pressure Relief Valve  ...................................13
Combustible Material Storage  ............................................ 14
Contaminated Air ................................................................ 14
Air Requirements  ............................................................... 15
Unconfined Space  .............................................................. 15
Confined Space .................................................................. 15
Fresh Air Openings for Confined Spaces  ........................... 16
Outdoor Air Through Two Openings  ................................... 16
Outdoor Air Through One Opening  .................................... 16
Outdoor Air Through Two Horizontal Ducts  ........................ 16
Outdoor Air Through Two Vertical Ducts  ............................17
Air From Other Indoor Spaces  ...........................................17  
						

							3
SAFE INSTALLATION, USE AND SERVICE
The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others.
Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and 
others of a potential injury hazard.  Read and obey all safety messages and instructions throughout this manual.  It is very important 
that the meaning of each safety message is understood by you and others who install, use, or service this water heater.
All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message, and 
how to avoid the risk of injury.
DANGER
W ARNING
CAUTION
CAUTION
DANGER indicates an imminently
hazardous situation which, if not avoided,
will result in injury or death.
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
WARNING indicates a potentially hazardou s
situation which, if not avoided, could resul t
in injury or death.
CAUTION indicates a potentially hazardous
situation which, if not avoided, could result in
minor or moderate injur y.
CAUTION used without the safety aler t
symbol indicates a potentially hazardous
situation which, if not avoided, could result in
property damage.
APPROVALS  
						

							4
GENERAL SAFETY INFORMATION
Fire Hazard
Do not install water heater on
carpeted floor.
Do not operate water heater ifexposed  to floodi ng or wat er damage .
For continued protection against
risk of fire:
Fire or Explosion Hazar d
Read instruction manual befor e
installing, using or servicing water heater .
Avoid all ignition sources if you smell gas .
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use. Maintain required clearances to combustibles. Do not expose water heater controls to excessive gas
pressure.
Property Damage Hazard
All water heaters eventually leak.
Do not install without adequate drainage.
CAUTION
Fire and Explosion Hazar
d
Leak test before placing the
water heater in operation.
Disconnect gas piping and main
gas shutof f valve before leak
testing.
Install sediment trap in
accordance with NF PA 54.
Use joint compound or 
Teflon tape
compatible with propane gas .
Fire and Explosion Hazard
Turn of f gas lines during installation.
Contact  a qualified  installer  or service
technician for installation and service.
Excessive gas pressure to gas valve ca n
cause serious injury or death. Do not use water heater with any gas
other than the gas shown on the rating
label.  
Turn of f power to the water heater
before performing any service .
Electrical Shock Hazard

Label all wires prior to disconnecting
when performing service. Wiring error s
can cause improper and dangerous
operation.
Ve rify proper operation after servicing.
Failure to follow these instructions ca n
result in personal injury or death.
Jumping out control circuits or components can
result in property damage, personal injury or death.
Service should only be performed by a qualified service
technician using proper test equipment.
Altering the water heater controls and/or wiring in any way
could result in permanent damage to the controls or water
heater and is not covered under the limited warranty .
Any bypass or alteration of the water
heater controls and/or wiring will result in voiding the water heater warranty .  
						

							5
PRECAUTIONS
DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN 
EXPOSED TO FLOODING OR WATER DAMAGE. Immediately 
call a qualified service technician to inspect the water heater and 
to make a determination on what steps should be taken next.
If the unit is exposed to the following, do not operate heater 
until  all  corrective  steps  have  been  made  by  a  qualified 
service technician.
1. External fire.
2.  Damage.
3.  Firing without water.
GROUNDING INSTRUCTIONS
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 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 20. 
HYDROGEN GAS FLAMMABLE
Explosion Hazard
Flammable hydrogen gases
may be present .
Keep all ignition sources away
from faucet when turning on
hot water.
Hydrogen  gas  can  be  produced  in  a  hot  water  system  served 
by this water 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 a hot water faucet served by this water 
heater be opened for several minutes 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.
Verify the power to the water heater is turned off before performing any \
service procedures.
Read and understand this instructio
n
manual and the safety messages
herein before installing, operating or
servicing this water heater .
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater .
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury .
Feel water before bathing or
showering.
Te mperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
Explosion Hazard
Overheated water can caus e
water tank explosion.
Properly sized temperature and
pressure relief valve must be
installed in the opening provided.
Improper installation, use and service may result in property damage.
 Do not operate water heater if exposed to flooding or
 
  water damage.
 Inspect anode rods regularly
, replace if damaged.
 Install in location with drainage.
 Fill tank with water before operation.
 Properly sized thermal expansion tanks are required on all
 closed water systems.
  Refer to this manual for installation and service.
CAUTIO N
GENERAL SAFETY INFORMATION
GENERAL SAFETY INFORMATION  
						

							6
FEATURES AND COMPONENTS
Thank  You  for  purchasing  this  water  heater.  Properly  installed 
and maintained, it should give you years of trouble free service.
ABBREVIATIONS USED
Abbreviations found in this Instruction Manual include :•  ANSI - American National Standards Institute
•  ASME - American Society of Mechanical Engineers
•  AHRI - Air-Conditioning, Heating, and Refrigeration Institute
•  NEC - National Electrical Code
•  NFPA - National Fire Protection Association
•  UL - Underwriters Laboratory
•  CSA - Canadian Standards Association
QUALIFICATIONS
Qualified Installer or Service Agency
Installation  and  service  of  this  water  heater  requires  ability 
equivalent  to  that  of  a  Qualified  Agency  (as  defined  by 
ANSI  below)  in  the  field  involved.  Installation  skills  such 
as  plumbing,  air  supply,  venting,  gas  supply  and  electrical 
supply are required in addition to electrical testing skills when 
performing service.
ANSI Z223.1 2012 Sec. 3.3.85:  “Qualified  Agency”  -  “Any 
individual, firm, corporation or company that either in person or 
through a representative is engaged in and is responsible for (1) 
the  installation,  testing  or  replacement  of  gas  piping  or  (2)  the 
connection, installation, testing, repair or servicing of appliances 
and equipment; that is experienced in such work; that is familiar 
with all precautions required; and that has complied with all the 
requirements of the authority having jurisdiction.”
If you are not qualified (as defined by ANSI above) and licensed 
or  certified  as  required  by  the  authority  having  jurisdiction 
to  perform  a  given  task  do  not  attempt  to  perform  any  of  the 
procedures  described  in  this  manual.  If  you  do  not  understand 
the  instructions  given  in  this  manual  do  not  attempt  to  perform 
any procedures outlined in this manual.
INTRODUCTION
PREPARING FOR THE INSTALLATION
1.  Read the "General Safety Information" section, pages 4-5 of 
this  manual  first  and  then  the  entire  manual  carefully.  If  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, operation, 
and maintenance of the gas-fired water heater. It also contains 
warnings  throughout  the  manual  that  you  must  read  and  be 
aware of. All warnings and all instructions are essential to the 
proper  operation  of  the  water  heater  and  your  safety.  Since 
we cannot put everything on the first few pages, RE AD THE 
ENTIRE MANUAL BE FORE ATTEMPTING TO INSTALL OR 
OPERATE THE WATER HEATER.
2.  The  installation  must  conform  with  these  instructions  and  the 
local code authority having jurisdiction. In the absence of local 
codes, the installation must comply with the current editions of 
the  National  Fuel  Gas  Code, ANSI  Z223.1/NFPA  54  or  CAN/
CSA-B149.1  the  Natural  Gas  and  Propane  Installation  Code. 
All  documents  are  available  from  the  Canadian  Standards 
Association,  8501  East  Pleasant  Valley  Road,  Cleveland,  OH 
44131. NFPA documents are also available from the National Fire 
Protection Association, 1 Batterymarch Park, Quincy, MA 02269.
3.  If after reading this manual you have any questions or do not 
understand any portion of the instructions, call the local gas utility 
or the manufacturer whose name appears on the rating plate.
4.  Carefully  plan  the  place  where  you  are  going  to  put  the 
water heater. Correct combustion, vent action, and vent pipe 
installation are very important in preventing death from possible 
carbon monoxide poisoning and fires.
Examine the location to ensure the water heater complies with 
the “Locating the Water Heater” section in this manual.
5.  For  California  installation  this  water  heater  must  be  braced, 
anchored,  or  strapped  to  avoid  falling  or  moving  during  an 
earthquake. See instructions for correct installation procedures. 
Instructions may be obtained from California Office of the State 
Architect, 400 P Street, Sacramento, CA 95814.
CONTROLS
FIGURE 1.
THE ELIMINATOR (SELF-CLEANING SYSTEM)
These  units  include  The  Eliminator  (Self-Cleaning  System) 
installed in the front water inlet, see Figure 2. The Eliminator inlet 
tube can only be used in the front water inlet connection. Do not 
install the Eliminator inlet tube in either the top or back inlet water 
connection. The Eliminator must be oriented correctly for proper 
function.  There  is  a  marked  range  on  the  pipe  nipple  portion  of 
the Eliminator, that must be aligned with the top of the inlet spud. 
A  label  above  the  jacket  hole  has  an  arrow  that  will  point  to  the 
marked  portion  of  the  pipe  nipple  if  the  orientation  is  correct.  If 
the  arrow  does  not  point  within  the  marked  range  on  the  pipe 
nipple, adjust the pipe nipple to correct. A pipe union is supplied 
with  the  Eliminator  to  reduce  the  probability  of  misaligning  the 
Eliminator  accidentally  while  tightening  the  connection  to  the 
inlet  water  supply  line.  Improper  orientation  of  the  Eliminator 
can  cause  poor  performance  of  the  heater  and  can  significantly 
reduce outlet water temperatures during heavy draws. 
						

							7
BLOWER/BURNER ASSEMBLY
The  fan-assisted  combustion  system  includes  a  spark-to-pilot 
igniter,  100%  premix  stainless  steel  burners,  and  prejets  for  input 
rate and precision air/gas ratio control.
2-BURNER / BLOWER ASSEMBLY 
(for Input of 199KBtu/H or Less )
3-BURNER / BLOWER ASSEMBLY  
(for Input of 250KBtu/H or Higher )
FIGURE 5.
The  intake  air  screen  is  attached  to  the  inlet  of  the  combustion 
blower.  Inspect  the  intake  air  screen  every  six  months.  The  intake 
air  screen  should  be  cleaned  of  any  buildup  of  debris  or  foreign 
material.
Note: The Eliminator may have 1, 3 or 7 cross tubes.
FIGURE 2.
HIGH LIMIT SWITCH
The  digital  thermostat  (Figure  3)  contains  the  high  limit  (energy 
cutout) switch. The high limit switch interrupts burner gas flow should 
the water temperature reach 203°F (95°C).
In the event of high limit switch operation, the water heater cannot be 
restarted  unless  the  water  temperature  is  reduced  to  approximately 
120°F  (49°C).  The  high  limit  reset  button  on  the  front  of  the  control 
then needs to be depressed.
Continued manual resetting of high limit control, preceded by higher 
than usual water temperature is evidence of high limit switch operation.
Contact  your  dealer  or  service  agent  if  continued  high  limit  switch 
operation occurs.
RESET
BUTTON
LEDLIGHTSFUSE 
140130
DIGITAL THERMOSTAT
FIGURE 3.
ELECTRONIC IGNITION CONTROL
Each  heater  is  equipped  with  an  ignition  control.  The  solid  state 
ignition  control  (Figure  4),  ignites  the  burner  by  utilizing  an 
intermittent  spark-to-pilot  igniter.  Spark  and  pilot  gas  ON  until 
lightoff  or  trial  for  ignition  ends.  If  pilot  fails  to  light,  pilot  gas  and 
spark  OFF  (100%  shutoff).  After  5  minutes  delay,  a  new  trial  for 
ignition  is  initiated.  This  sequence  continues  until  lightoff  or  "Call 
for Heat" is removed.
IGNITION CONTROLFIGURE 4.  
						

							8
ROUGH IN DIMENSIONS
FIGURE 6.
TABLE 1. ROUGH-IN-DIMENSIONS
MODEL DIM.BCL380T1206NOX - 1996NOX BCL3100T1996NOX - (A)2756NOX (A)BCL386T3106NOX - 3906NOX
inches cminches cminches cm
A 63-3/4161.93 71-3/4182.25 71-3/4 182.25
B 3793.98 3793.98 3793.98
C 65165.1 73185.42 73185.42
D 52-3/4133.99 60-3/4154.31 60-3/4 154.31
E 20-3/452.7120-1/2 52.0720-1/2 52.07
F 2153.34 2153.34 2153.34
G 3/4 NPT 3/4 NPT 3/4 NPT
H 53134.62 61154.94 61154.94
I 615.24 615.24 615.24
J 27-3/470.4927-3/4 70.4927-3/4 70.49
K 1 1/2 NPT 1 1/2 NPT 1 1/2 NPT
L 1 1/2 NPT 1 1/2 NPT 1 1/2 NPT
M --820.3 820.3
Approx. Shipping Weight STD 605275 665 302740 335
Approx. Shipping Weight ASME N/AN/A 715 324790 358
TABLE 2. RECOVERY CAPACITIES, BASED ON 80% THERMAL EFFICIENCY
ModelInput KbtuhInput 
Kw U.S. 
Gal. LitersEff.%U.S. Gallons/hr and Liters/hr at Temperature Rise Indicated
°F 364050 54 60 70728090100 108 11 0120 126130140
°C 202228 30 33 3940445056606167707278
BCL380T1206NOX 120
8180GPH 320288230 213 192 165160144128 11 5107 105 96918982
35 307LPH
12121091872808 727 623606545485436404397364346336312
BCL380T1546NOX 154
8180GPH 4 11370296 274 246 2 11205 185164148137134123 11 711 4106
45 307LPH
1555139911201037933800777700622560518509466444431400
BCL380T1806NOX 180
8180GPH 480432346 320 288 247240216192173160157144137133123
53 307LPH
181816361309 1212 1091935909818727654606595545519503467
BCL380T1996NOX 199
8180GPH 531478382 354 319 273265239212191177174159152147137
58 307LPH
200918081447 1340 1206 10331005904804723670658603574556517
BCL3100T1996NOX 199
100 80GPH 531478382 354 319 273265239212191177174159152147137
58 378LPH
2009180814471340 1206 10331005904804723670658603574556517
(A)BCL3100T2506NOX250 100 80GPH 667600480 445 400 343333300267240222218200191185171
73 378LPH252422721818 1683 1515 12981262 11361010909841826757721699649
(A)BCL3100T2756NOX275 100 80GPH 734660528 489 440 377367330293264245240220210203189
81 378LPH277724991999 1851 1666 142813881250 11111000926909833793769714
(A)BCL386T3106NOX310 8680GPH 827744595 551 496 425413372331298276271248236229213
91 325LPH313028172254 2087 1878 1610156514091252 11271043 1024939894867805
(A)BCL386T3666NOX366 8680GPH 976879703 651 586 502488439391352325320293279270251
107 325LPH369633262661 2464 2217 190118481663147813301232120911091056 1023950
(A)BCL386T3906NOX390 8680GPH1040936 749 694 624 535520468416375347340312297288268
11 4 325LPH393835442835 2625 2363 2025196917721575141813131289 1181112510911013
TABLE 3. GAS AND ELECTRICAL CHARACTERISTICS
Model Gas Type Gas Supply Pressure
Volts / HzAmperes
Minimum Maximum
BCL380T1206NOX-100T2756NOX Natural3.5" W.C. (0.87 kPa) 14" W.C. (3.48 kPa) 120/60
						

							9
heater  is  installed  in  a  carpeted  alcove,  the  entire  floor  shall 
be covered by the panel. 
The heater shall be located or protected so it is not subject to 
physical damage by a moving vehicle.
Flammable  items,  pressurized  containers  or  any  other 
potential  fire  hazardous  articles  must  never  be  placed  on 
or  adjacent  to  the  heater.  Open  containers  or  flammable 
material should not be stored or used in the same room with 
the heater.
The  heater  must  not  be  located  in  an  area  where  it  will  be 
subject to freezing.
Locate it near a floor drain. The heater should be located in 
an  area  where  leakage  from  heater  or  connections  will  not 
result  in  damage  to  adjacent  area  or  to  the  lower  floors  of 
the structure.
When  such  locations  cannot  be  avoided,  a  suitable  drain  pan 
should be installed under heater. Such pans should be fabricated 
with sides at least 2” deep, with length and width at least 2” greater 
than diameter of heater and must be piped to an adequate drain. 
Pan must not restrict combustion air flow.
CLEARANCES
This  water  heater  is  approved  for  installation  on  combustible 
flooring  in  an  alcove  with  minimum  clearance  from  combustion 
construction as indicated in Figure 7 and Table 4.
In  all  installations  the  minimum  combustible  clearances  from 
vent piping shall be 6” (15.2 cm). Vent piping passing through a 
combustible  wall  or  ceiling  must  be  a  continuous  run  (no  joints) 
and  retain  6”  (15.2  cm)  clearance  unless  an  approved  reducing 
thimble is used.
When the water heater is installed directly on carpeting, the water 
heater  shall  be  installed  on  a  metal  or  wood  panel  extending 
beyond  the  full  width  and  depth  of  the  water  heater  by  at  least 
3 in (76.2 mm) in any direction or, if the water heater is installed 
in  an  alcove  or  closet,  the  entire  floor  shall  be  covered  by  the 
panel.  The  panel  must  be  strong  enough  to  carry  the  weight  of 
the heater when full of water.
A service clearance of at least 24” (61 cm) should be maintained 
from serviceable parts.
TABLE 4. MINIMUM CLEARANCES TO COMBUSTIBLE OR 
NON-COMBUSTIBLE CONSTRUCTION
Model"A" Right Side "B" Left Side"C" Back"D" Ceiling
All 0"
0"0"12"
0 cm 0 cm0 cm30.5 cm
LOCATING THE WATER HEATER
Property Damage Hazard
All water heaters eventually leak.
Do not install without adequate drainage.
CAUTION
When  installing  the  heater,  consideration  must  be  given  to 
proper  location.  Location  selected  should  be  as  close  to  the 
stack or chimney as practicable, with adequate air supply and as 
centralized with the piping system as possible.
Fire or Explosion Hazar d
Read instruction manual befor e
installing, using or servicing water heater .
Avoid all ignition sources if you smell gas .
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use. Maintain required clearances to combustibles. Do not expose water heater controls to excessive gas
pressure.
There  is  a  risk  in  using  fuel  burning  appliances  such  as  gas 
water heaters in rooms, garages or other areas where gasoline, 
other flammable liquids or engine driven equipment or vehicles 
are  stored,  operated  or  repaired.  Flammable  vapors  are  heavy 
and  travel  along  the  floor  and  may  be  ignited  by  the  heater's 
igniter  or  main  burner  flames  causing  fire  or  explosion.  Some 
local codes permit operation of gas appliances in such areas if 
they are installed 18" or more above the floor. This may reduce 
the risk if location in such an area cannot be avoided.
Do  not  install  this  water  heater  directly  on  a  carpeted  floor. 
A  fire  hazard  may  result.  Instead  the  water  heater  must  be 
placed  on  a  metal  or  wood  panel  extending  beyond  the  full 
width  and  depth  by  at  least  3  inches  in  any  direction.  If  the   
						

							10
INSULATION BLANKET
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Breathing Hazard - Carbon Monoxide Ga s
Insulation blankets are available to the general public for external 
use  on  gas  water  heaters  but  are  not  necessary  with  these 
products.  The  purpose  of  an  insulation  blanket  is  to  reduce  the 
standby  heat  loss  encountered  with  storage  tank  heaters.  The 
water heaters covered by this manual meet or exceed the Energy 
Policy Act  standards  with  respect  to  insulation  and  standby  heat 
loss requirements, making an insulation blanket unnecessary.
Should  you  choose  to  apply  an  insulation  blanket  to  this 
heater,  you  should  follow  these  instructions.  See  the  Features 
and  Components  section  of  this  manual  for  identification  of 
components mentioned below. Failure to follow these instructions 
can restrict the air flow required for proper combustion, potentially 
resulting in fire, asphyxiation, serious personal injury or death.
• DO NOT  apply  insulation  to  the  front  of  the  combustion 
chamber  flange  plate  to  insure  that  the  spark  igniter,  flame 
sensor, and sightglass remain uncovered.
•  DO NOT  cover  the  gas  control  valve  or  the  Temperature-
Pressure Relief Valve.
•  DO NOT apply insulation within 5” (13 cm) of the blower, to 
insure the safe operation of the blower assembly.
•  DO NOT  apply  insulation  on  the  control  box  that  encloses 
the thermostat, ignition control, and variable frequency drive.
•  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 
manufacturer for placement on the blanket directly over the 
existing labels.
•  DO inspect the insulation blanket frequently to make certain 
it does not sag, thereby obstructing combustion air flow.
HARD WATER
Where  hard  water  conditions  exist,  water  softening  or  the 
threshold  type  of  water  treatment  is  recommended.  This  will 
protect the dishwashers, coffee urns, water heaters, water piping 
and other equipment.
See  the  Maintenance  Section  in  this  manual  for  sediment  and 
lime scale removal procedures.
CIRCULATION PUMPS
A circulating pump is used when a system requires a circulating 
loop or there is a storage tank used in conjunction with the water 
heater. See Water Piping Diagrams in this manual for installation 
location of circulating pumps.
See  the  Circulation  Pump  Wiring  Diagrams  (Figure  9.)  in  this 
manual  for  electrical  hookup  information.  Install  in  accordance 
with the current edition of the National Electrical Code, NFPA 70 
or the Canadian Electrical Code, CSA C22.1.
Stainless steel circulating pumps are recommended for use with 
commercial water heaters.
FIGURE 7.
NSF LEG KIT
FIGURE 8.
The  NSF  Leg  Kit  (part  number  9008883005)  is  needed  only  for 
applications  that  must  conform  to  NSF/ANSI  Standard  5.  The 
installed  height  of  the  water  heater  will  increase  by  4"  (10.2  cm) 
when the leg kit is installed. Follow these steps to install the Leg Kit. 
Use caution to prevent damage to the unit when installing the Leg Kit
1.   Lift, tilt or lay the unit on its side to access the bottom of the legs.
2.  Position the extension under leg aligning the holes in the leg 
extension  with  the  holes  in  the  leg.  Assemble  the  bolt,  bevel 
washers,  flat  washers,  and  nut  through  the  aligned  holes  in 
the leg and leg extension as shown in Figure 8.
3.  Once in place, tighten the nut and bolt assembly. Torque to 70 
ft.lbs (9.67 kgf-m).
4.   Insure that all four nut and bolt assemblies are torqued to the 
specified value before placing the unit on the floor.