American Water Heater Heavy Duty Commercial Gas BCG3 User Manual

 COMMERCIAL GAS WATER HEATERS
Instruction Manual
PRINTED 1215  197935-006
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
MODELS BCG3 & ABCG3
SERIES 118/119
INSTALLATION - OPERATION - SERVICE  
- MAINTENANCE - LIMITED WARRANTY
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...

2Air From Other Indoor Spaces ........................................................
18
Technical Data Venting .............................................................. 19 -20
Mechanical Venting  ......................................................................... 21
WATER HEATER INSTALLATION ................................................. 21-24
Water Line Connections .................................................................. 21
T&P Valve Discharge Pipe...

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...

4
GENERAL SAFETY INFORMATION
Fire or Explosion Hazard
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...

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...

6
INTRODUCTION
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
•...

7
THE ELIMINATOR (SELF-CLEANING SYSTEM)
These units include The Eliminator (Self-Cleaning System) installed 
in the front water inlet, See Figure 1. 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  pipe  nipple  portion  of  the  Eliminator,  that 
must be aligned with top of inlet spud....

8
ROUGH IN DIMENSIONS
INSTALLATION CONSIDERATIONS
TABLE 1. BCG370T1205_ THROUGH (A)BCG3100T3998_ 
MODELINPUT 
RATE 
BTU/HR.APPROX. TANK  CAP. A
BC D EFGAS INLET G HVENT 
DIA.  I J CONNECTIONS
APPROXIMATE 
SHIP WEIGHT
INLET OUTLET
TOP FRONT BACKTOPFRONT BACKSTD.ASME
BCG3 
70T120 120,000 
BTU/Hr.
35 Kw/Hr 71 Gal
268 L
69-3/4”  
177 cm 4-1/4” 
11 cm 59-1/2”  
151 cm 50-7/8”  
129 cm19-11/16”  50 cm 19” 
48 cm 1/2” 
1/2”51-7/8” 
132 cm 6” 
15 cm 27-3/4” 
71 cm 1-1/2" NPT
1-1/2" NPT 1-1/2" NPT...

9
TABLE 2. HEATER PERFORMANCE DATA (A)BCG3 MODELS
MODELINPUT RATE 
BTUH APPROX. 
GAL. CAP. EFF. % RECOVERY RATING CAPACITIES (GPH AND LPH)
30°F 40°F 50°F60°F 70°F 80°F 90°F100°F 110°F120°F 130°F140°F
(-)1°C 4°C10°C 15°C 21°C 27°C 32°C38°C43°C49°C54°C60°C
BCG3 
70T120 120,000 BTU/Hr.
35 Kw/Hr 71 Gal
268 L 80388
1469 291
1102 233
882194
734 166
628 145
549 129
488 11 6
439 106
401 97
367 90
341 83
314
BCG3 
80T150 154,000 BTU/Hr
45 Kw/Hr 81 Gal
306 L 80498
1885 373
1412 299
1132 249
943213
806 187
708 166...

10
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...