American BCG3 Manual

1
MODELS BCG3 & ABCG3
COMMERCIAL GAS, GLASS-LINED, TANK-TYPE WATER HEATER
•INSTALLATION • OPERATION • MAINTENANCE •LIMITED WARRANTY
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER
AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
P.O. Box 1597, 500 Princeton Road
Johnson City, TN 37605
CAUTION
TEXT PRINTED OR OUTLINED IN RED CONTAINS
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE
READ THOROUGHLY BEFORE INSTALLING AND USING
THIS APPLIANCE.
Thank you for buying this energy efcient water heater from
American Water Heater Company. We appreciate your condence
in our product.
PRINTED 0609 197935-001
ANSI/NSF-5

2
See Models Below
FIGURE 1
BCG3-70T120-5_ THROUGH (A)BCG3-100T399-8_ - TABLE 1A
MODEL
INPUT
RATE BTU/
HR.
APPROX.
TANK CAP. A B C D E F
GAS
INLET
G
HVENT
DIA. I J
CONNECTIONS APPROXIMATE
SHIP WEIGHT
INLET OUTLET
TOP FRONT BACK TOP FRONT BACK STD. ASME
BCG3
70T120’s
120,000
BTU/Hr.
35 Kw/Hr
71 Gal
268 L
69.75”
177 cm
4.25”
11 cm
59.50”
151 cm
50.87”
129 cm
19.69”
50 cm
19”
48 cm
1/2”
1/2”
51.88”
132 cm
6”
15 cm
27.75”
71 cm
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
400 Lbs
182 Kg
NA
NA
BCG3
80T150’s
154,000
BTU/Hr
45 Kw/Hr
81 Gal
307 L
73.00”
185 cm
4.25”
11 cm
66.50”
169 cm
57.87”
147 cm
19.69”
50 cm
19”
48 cm
1/2”
1/2”
59.00”
150 cm
6”
15 cm
27.75”
71 cm
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
470 Lbs
213 Kg
NA
NA
BCG3
80T180’s
180,000
BTU/Hr
53 Kw/Hr
81Gal
307 L
67.50”
171 cm
4.50”
12 cm
62.00”
157 cm
53.62”
136 cm
20.50”
52 cm
21”
53 cm
1/2”
1/2”
54.62”
139 cm
6”
15 cm
27.75”
71 cm
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
470 Lbs
213 Kg
NA
NA
BCG3
100T199’s
199,000
BTU/Hr
58 kW/Hr
100 Gal
379 L
75.00”
192 cm
4.50”
12 cm
70.00”
178 cm
61.62”
157 cm
20.50”
52 cm
21”
53 cm
1/2”
1/2”
62.62”
159 cm
6”
15 cm
27.75”
71 cm
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
603 Lbs
273 Kg
NA
NA
BCG3
80T199’s
199,000
BTU/Hr
58 kW/Hr
81 Gal
307 L
67.50”
171 cm
4.50”
12 cm
62.00”
157 cm
53.62”
136 cm
20.50”
52 cm
21”
53 cm
1/2”
1/2”
54.62”
139 cm
6”
15 cm
27.75”
71 cm
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
470 Lbs
213 Kg
NA
NA
(A)BCG3
100T200’s
199,000
BTU/Hr
58 kW/Hr
100 Gal
379 L
72.00”
183 cm
4.50”
12 cm
65.13”
165 cm
55.87”
142 cm
19.75”
50 cm
23”
58 cm
1/2”
1/2”
56.38”
143 cm
6”
15 cm
30.25”
77 cm
1.50”
1.50”
2.00”
2.00”
2.00”
2.00”
1.50”
1.50”
2.00”
2.00”
2.00”
2.00”
630 Lbs
286 Kg
725 Lbs
329 Kg
(A)BCG3
100T250’s
250,000
BTU/Hr
72 kW/Hr
100 Gal
379 L
72.00”
183 cm
4.50”
12 cm
65.13”
165 cm
55.87”
142 cm
19.75”
50 cm
23”
58 cm
1/2”
1/2”
56.38”
143 cm
8”
20 cm
30.25”
77 cm
1.50”
1.50”
2.00”
2.00”
2.00”
2.00”
1.50”
1.50”
2.00”
2.00”
2.00”
2.00”
630 Lbs
286 Kg
725 Lbs
329 Kg
(A)BCG3
65T250’s
251,000
BTU/Hr
73 kW/Hr
65 Gal
246 L
75.00”
191 cm
4.50”
12 cm
65.75”
167 cm
57.25”
145 cm
20.00”
51 cm
NA
NA
1/2”
1/2”
58.75
149 cm
8”
20 cm
27.75”
70 cm
NA
NA
1.50”
1.50”
1.50”
1.50”
NA
NA
1.50”
1.50”
1.50”
1.50”
750Lbs
341 Kg
862 Lbs
391 Kg
(A)BCG3
100T275’s
275,000
BTU/Hr
80 kW/Hr
100 Gal
379 L
72.00”
183 cm
4.50”
12 cm
65.13”
165 cm
55.87”
142 cm
19.75”
50 cm
23”
58 cm
1/2”
1/2”
56.38”
143 cm
8”
20 cm
30.25”
77 cm
1.50”
1.50”
2.00”
2.00”
2.00”
2.00”
1.50”
1.50”
2.00”
2.00”
2.00”
2.00”
630 Lbs
286 Kg
725 Lbs
329 Kg
(A)BCG3
65T300’s
305,000
BTU/Hr
89 kW/Hr
65 Gal
246 L
75.00”
191 cm
4.50”
12 cm
65.75”
167 cm
57.25”
145 cm
20.00”
51 cm
NA
NA
1/2”
1/2”
58.75
149 cm
8”
20 cm
27.75”
70 cm
NA
NA
1.50”
1.50”
1.50”
1.50”
NA
NA
1.50”
1.50”
1.50”
1.50”
750 Lbs
341 Kg
862 Lbs
391 Kg
(A)BCG3
85T360’s
365,000
BTU/Hr
107 kW/Hr
85 Gal
322 L
79.50”
202 cm
4.50”
12 cm
70.25”
178 cm
62.50”
159 cm
22.50”
57 cm
23”
58 cm
3/4”
3/4”
63.00
160 cm
8”
20 cm
27.75”
70 cm
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
1.50”
725 Lbs
329 Kg
833 Lbs
379 Kg
(A)BCG3
100T390’s
390,000
BTU/Hr
114 kW/Hr
100 Gal
379 L
75.50”
192 cm
4.50”
12 cm
67.50”
171 cm
58.25”
148 cm
26.75”
68 cm
23”
58 cm
3/4”
3/4”
59.00”
150 cm
8”
20 cm
30.25”
77 cm
1.50”
1.50”
2.00”
2.00”
2.00”
2.00”
1.50”
1.50”
2.00”
2.00”
2.00”
2.00”
760 Lbs
345 Kg
874 Lbs
396 Kg
HEATER PERFORMANCE DATA (A)BCG3 MODELS - TABLE 1B
MODEL INPUT BTUH
APPROX.
RATE
CAP.
GAL%
RECOVERY RATING CAPACITIES (GPH AND LPH)
EFF. 30°F 40°F 50°F 60°F 70°F 80°F 90°F 100°F 110°F 120°F 130°F
(-)1°C 4°C 10°C 15°C 21°C 27°C 32°C 38°C 43°C 49°C 54°C 60°C
BCG3-
70T120’s
120,000 BTU/Hr.
35 Kw/Hr
71 Gal
268 L 80 388 1469
291
1102
233
882
194
734
166
628
145
549
129
488
116
439
106
401
97
367
90
341
83
314
BCG3-
80T150’s
154,000 BTU/Hr
45 Kw/Hr
81 Gal
306 L 80 498 1885
373
1412
299
1132
249
943
213
806
187
708
166
628
149
564
136
515
124
469
115
435
107
405
BCG3-
80T180’s
180,000 BTU/Hr
53 Kw/Hr
81 Gal
306 L 80 579 2192
434
1643
347
1314
289
1094
248
939
217
821
193
731
174
650
158
598
145
549
134
507
124
469
BCG3-
100T199’s
199,000 BTU/Hr
58 kW/Hr
100 Gal
379 L 80 643 2434
482
1825
386
1461
322
1219
276
1045
241
912
214
810
193
731
175
662
161
609
148
560
132
500
BCG3-
80T199’s
199,000 BTU/Hr
58 kW/Hr
81 Gal
306 L 80 614 2324
461
1745
368
1393
307
1162
263
996
230
871
205
776
184
697
167
632
154
583
142
538
132
500
(A)BCG3-
100T200’s
199,000 BTU/Hr
58 kW/Hr
100 Gal
379 L 80 643 2434
482
1825
386
1461
322
1219
276
1045
241
912
214
810
193
731
175
662
161
609
148
560
132
500
(A)BCG3-
100T250’s
250,000 BTU/Hr
72 kW/Hr
100 Gal
379 L 80 808 3059
606
2294
485
1835
404
1529
346
1311
303
1147
269
1020
242
918
220
834
202
765
186
706
173
655
(A)BCG3-
65T250’s
251,000 BTU/Hr
73 kW/Hr
65 Gal
246 L 80 811 3071
608
2303
487
1843
406
1536
348
1316
304
1152
270
1024
243
921
221
838
203
768
187
709
174
658
(A)BCG3-
100T275’s
275,000 BTU/Hr
80 kW/Hr
100 Gal
379 L 80 889 3365
667
2524
533
2019
444
1682
381
1442
333
1262
296
1122
267
1009
242
918
222
841
205
776
190
721
(A)BCG3-
65T300’s
305,000 BTU/Hr
89 kW/Hr
65 Gal
246 L 80 986 3732
739
2799
592
2239
493
1866
423
1599
370
1399
329
1244
296
1120
269
1018
246
933
228
861
211
800
(A)BCG3-
85T360’s
365,000 BTU/Hr
107 kW/Hr
85 Gal
322 L 80 1180 4466
885
3349
708
2680
590
2233
506
1914
442
1675
393
1489
354
1340
322
1218
295
1116
272
1031
253
957
(A)BCG3-
100T390’s
390,000 BTU/Hr
114 kW/Hr
100 Gal
379 L 80 1293 4894
970
3671
776
2936
646
2447
554
2097
485
1835
431
1631
388
1468
353
1335
323
1224
298
1129
277
1049
BCG370T120’s are approved for 5” (13 cm) venting using a 6” (15 cm) to 5” (13 cm) reducer.

3
TABLE OF CONTENTS
ROUGH-IN-DIMENSIONS .................................................2-3
TABLE OF CONTENTS.........................................................4
FOREWORD .........................................................................4
GENERAL SAFETY INFORMATION.....................................5
Chemical Vapor Corrosion.....................................................5
Improper Combustion............................................................5
Liquid Petroleum Models.......................................................5
Extended Non-Use Periods...................................................5
Insulation Blankets .............................................................5-6
High Altitude Installation ........................................................6
FEATURES............................................................................6
The Eliminator (Self-Cleaning System) .................................6
High Limit Switch (E.C.O.)..................................................6-7
Electronic Ignition Control......................................................7
Automatic Flue Damper Device.............................................7
Circulating Pump ...................................................................7
Dishwashing Machine Requirement...................................7-8
INSTALLATION INSTRUCTIONS .........................................8
Uncrating ...............................................................................8
Locating The Heater ..............................................................8
Levelling ................................................................................8
Clearances .........................................................................8-9
Installation on Combustible Flooring .....................................9
Hard Water ............................................................................9
Air Requirements..............................................................9-10
Unconned Space ...............................................................9
Conned Space.................................................................10
Vent Reducer.......................................................................10
Venting.................................................................................10
Multiple Heater Manifold......................................................10
Water Line Connections ......................................................10
Technical Data Venting...................................................11-12
Water (Potable) Heating and Space Heating ......................13
Thermometers (Not Supplied) .............................................13
Relief Valve..........................................................................13
Gas Piping......................................................................13-14
Gas piping and Dirt Leg Installation................................14-15
Gas Pressure Regulator......................................................15
Grounding Instructions ........................................................15
Heater Wiring.......................................................................15
INSTALLATION DIAGRAMS ..........................................15-21
MANIFOLDS........................................................................22
MECHANICAL VENTING ....................................................23
Single Unit Installation.........................................................23
Vent Installation ...................................................................23
Multiple Unit Installation.......................................................23
OPERATION........................................................................24
General................................................................................24
Filling ...................................................................................24
Purging ................................................................................24
Lighting and Operating Labels........................................25-26
Water Temperature Control .................................................27
Testing Damper Control.......................................................27
Checking Venting............................................................27-28
PREVENTIVE MAINTENANCE...........................................28
Check The Pilot ...................................................................28
Pilot Burner..........................................................................28
Main Burner....................................................................28-29
Gas Valves ..........................................................................29
Checking The Input .............................................................29
Venting System....................................................................30
Remote Storage Tank Temperature Control ........................30
Relief Valve..........................................................................30
Hot Water Odor ...................................................................30
Anode Rod Inspection .........................................................30
Recommended Procedure For Periodic Removal
of Lime Deposits From Tank Type Commercial
Water Heaters ................................................................30-31
Deliming Solvents................................................................31
Tank Cleanout Procedures .............................................31-32
Troubleshooting Ignition Module System ............................32
SERVICE.............................................................................32
Electrical Servicing ..............................................................32
Replacement Parts..............................................................32
Efkal Flue Damper Troubleshooting Guide........................33
Operational Checklist ..........................................................34
Limited Warranty .................................................................35
Page
FOREWORD
These designs comply with ANSI Z21.10.3/CSA 4.3 as an automatic
circulating or automatic storage tank type water heater.
Heaters having an input of 305,000 (89 Kwh), 365,000 (107 Kwh)
and 390,000 (117 Kwh) Btuh with a recovery rating of 277.3
gph (1049 Lph) or more also comply with ANSI Z21.10.3 as an
automatic instantaneous type heater.
Detailed installation diagrams are found in this manual. These
diagrams will serve to provide the installer with a reference for the
materials and methods of piping necessary. It is highly essential
that all water, gas piping and wiring be installed as shown on the
diagrams.
Particular attention should be given to the installation of
thermometers at the locations indicated on the diagrams as these
are necessary for checking the proper functioning of the heater.
This model water heater is designed and manufactured in both
natural gas and propane versions. MAKE SURE the gas on which
the heater will operate is the same as that specied on the heater
model and rating plate.
These heaters may be installed on combustible oors.
In addition to these instructions, the equipment shall be installed
in accordance with those installation regulations in force in the
local area where the installation is to be made. These shall be
carefully followed in all cases. Authorities having jurisdiction should
be consulted before installations are made.
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 and the National Electrical Code, NFPA 70. 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.

4
GENERAL SAFETY
INFORMATION
PRECAUTIONS
DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN
UNDER WATER. Immediately call a qualied 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
CHEMICAL VAPOR CORROSION
WARNING
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 a 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.)
IMPROPER COMBUSTION
WARNING
ATTIC AND/OR EXHAUST FANS OPERATING ON THE
PREMISES WITH A WATER HEATER CAN RESULT IN CARBON
MONOXIDE POISONING AND DEATH.
OPERATION OF THESE FANS CAN PRODUCE A NEGATIVE
DRAFT IN THE AREA OF THE WATER HEATER PREVENTING
THE PRODUCTS OF COMBUSTION FROM EXHAUSTING
THROUGH THE CHIMNEY OR VENT PIPE.
The venting of the water heater should be inspected by a qualied
service technician at the time of installation and periodically
thereafter to ensure a down-draft condition does not exist.
DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND
VENTILATING AIR. ADEQUATE AIR FOR COMBUSTION AND
VENTILATION MUST BE PROVIDED FOR SAFE OPERATION.
LIQUID PETROLEUM MODELS
Water heaters for propane or liqueed petroleum gas (LPG) are
different from natural gas models. A natural gas heater will not
function safely on LP gas and no attempt should be made to
convert a heater from natural gas to LP gas.
LP gas must be used with great caution. It is highly explosive
and heavier than air. It collects rst in the low areas making its
odor difcult to detect at nose level. If LP gas is present or even
suspected, do not attempt to nd the cause yourself. Go to a
neighbor’s house, leaving your doors open to ventilate the house,
then call your gas supplier or service agent. Keep area clear until
a service call has been made.
At times you may not be able to smell an LP gas leak. One cause
is odor fade, which is a loss of the chemical odorant that gives
LP gas its distinctive smell. Another cause can be your physical
condition, such as having a cold or diminishing sense of smell
with age. For these reasons, the use of a propane gas detector
is recommended.
IF YOU EXPERIENCE AN OUT-OF-GAS SITUATION, DO
NOT TRY TO RELIGHT APPLIANCES YOURSELF, Ask your
LP delivery person to relight pilots for you. Only trained LP
professionals should conduct the required safety checks in
accordance with industry standards.
EXTENDED NON-USE PERIODS
WARNING
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 ow. THERE SHOULD BE NO
SMOKING OR OPEN FLAME NEAR THE FAUCET AT THE TIME
IT IS OPEN.
INSULATION BLANKETS
Insulation blankets available to the general public for external
use on gas water heaters are not approved for use on your
American water heater. The purpose of an insulation blanket is
to reduce the standby heat loss encountered with storage tank
water heaters. Your American water heater meets or exceeds
the ANSI/ASHRAE/IESNA Standard 90.1 2004 with respect to
insulation and standby loss requirement making an insulation
blanket unnecessary.
WARNING
Should you choose to apply an insulation blanket to this heater,
you should follow these instructions. Failure to follow these
instructions can result in re, asphyxiation , serious personal
injury or death.
• Do not apply insulation to the top of the water heater, as this
will interfere with safe operation of drafthood.
•Do not cover the gas valve or temperature & pressure relief
valve.

5
•Do not cover the instruction manual. Keep it on the side of the
water heater or nearby for future reference.
• Do not allow insulation to come within 2” (5 cm) of the
burners, to prevent blockage of combustion air ow to the
burners.
• Do not allow insulation to come within 9” (23 cm) of oor, (within
2” (5 cm) of bottom cover) to prevent blockage of combustion
air ow to the burners.
• Do inspect the insulation blanket frequently to make sure it
does not sag, thereby obstructing combustion air ow.
•Do obtain new labels from American Water Heater for placement
on the blanket directly over the existing labels.
HIGH ALTITUDE INSTALLATIONS
WARNING
INSTALLATIONS ABOVE 2000 FEET (610 METERS) REQUIRE
REPLACEMENT OF THE BURNER ORIFICES IN ACCORDANCE
WITH THE CURRENT EDITION OF NATIONAL FUEL GAS
CODE (ANSI Z223.1). FAILURE TO REPLACE THE ORIFICES
WILL RESULT IN IMPROPER AND INEFFICIENT OPERATION
OF THE APPLIANCE RESULTING IN THE PRODUCTION
OF INCREASED LEVELS OF CARBON MONOXIDE GAS
IN EXCESS OF SAFE LIMITS WHICH COULD RESULT IN
SERIOUS PERSONAL INJURY OR DEATH.
You should contact your gas supplier for any specic changes
which may be required in your area.
As elevation above sea level is increased, there is less oxygen
per cubic foot of air. Therefore, the heater input rate should
be reduced at high altitudes for satisfactory operation with
the reduced oxygen supply. Failure to make this reduction
would result in an overring of the heater causing sooting, poor
combustion and/or unsatisfactory heater performance.
Ratings specied by manufacturers for most appliances apply for
elevations up to 2000 feet (610 m). For elevations above 2000
feet (610), ratings must be reduced at the rate of 4% for each
1000 feet (305 m) above sea level. For example, if a heater is
rated at 120,000 Btuh (35 Kwh) at sea level, to rate the heater
at 4000 feet (1219 m), you subtract 4 (once for each thousand
feet) x .04 (4% input reduction) x 120,000 (original rating) from
the original rating. Therefore, to calculate the input rating at
4,000 feet (121.9 m): 4 x .04 x 120,000 =19,200 Btuh (5.6 Kwh),
120,000 (35 Kwh) - 19,200 (5.6 Kwh) = 100,800 Btuh (29.4 Kwh).
At 6000 feet (1829 m) the correct input rating should be 91,200
Btuh (26.7 Kwh).
The input reduction is primarily achieved by reducing
the size of the main burner orifices. To do this, the main
burner orifices require replacement with orifices sized for
the particular installation elevation. Correct orifice sizing
and parts may be obtained from American Water Heater
Company. When ordering, be sure to state the model number
and the altitude of the location where the water heater is
being installed.
Upon completion of derating of the heater, adjustment to the
gas pressure regulator may be required. See CHECKING
THE INPUT section in this manual for inlet and manifold
pressure requirements.
Also due to the input rating reduction required at high
altitudes, the output rating of the appliance is reduced and
should be compensated for in the sizing of the equipment for
application.
FEATURES
(SELF-CLEANING SYSTEM)
These units include self-cleaning device (Self-Cleaning
System) installed in the front water inlet. See figure 2. 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.
NOTE: The inlet tube may have 1, 3 or 7 cross-tubes.
FIGURE 2
For proper function, The Eliminator must be oriented correctly.
There is a marked range on the pipe nipple that must be aligned
with the top of the inlet spud (check for label on the appliance)
to assure proper orientation. Please check to conrm that the
marked range is in alignment with the top of the spud. A pipe
union is supplied with The Eliminator to help eliminate the
possibility of changing the orientation by accidentally over-
tightening the inlet supply line. Improper orientation of The
Eliminator may cause temperature build-up issues or spells of
colder than usual water temperatures.
HIGH LIMIT SWITCH
The digital thermostat (Fig. 3) contains the high limit (energy
cutoff) sensor. The high limit switch interrupts main burner gas
ow should the water temperature reach 203°F (95°C).
In the event of high limit switch operation, the appliance
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.

6
Continued manual resetting of high limit control, preceded by higher
than usual water temperature is evidence of high limit switch operation.
The following is a possible reason for high limit switch operation:
• A malfunction in the thermostatic controls would allow the gas
valve to remain open causing water temperature to exceed the
thermostat setting. The water temperature would continue to
rise until high limit switch operation.
Contact your dealer or service agent if continued high limit switch
operation occurs.
DIGITAL THERMOSTAT
FIGURE 3
ELECTRONIC IGNITION CONTROL
Each heater is equipped with a Honeywell ignition module. The
solid state ignition control, g.4, ignites the pilot burner gas by
creating a spark at the pilot assembly. Pilot gas is ignited and
burns during each running cycle. The main burner and pilot gases
are cut off during the OFF cycle. Pilot gas ignition is proven by the
pilot sensor. Main burner ignition will not occur if the pilot sensor
does not rst sense pilot ignition.
HONEYWELL IGNITION MODULE
S8600M Continuous Re-Try
FIGURE 4
AUTOMATIC FLUE DAMPER DEVICE
All units are equipped with an automatic ue damper that
reduces heat loss during the OFF cycles.
Each automatic ue damper drive assembly is equipped with a
“Service Switch”, as shown in gure 5.
FIGURE 5
The “Service Switch” has 2 positions: AUTOMATIC
OPERATION and HOLD OPEN DAMPER. For normal
operation the switch should be in the AUTOMATIC
OPERATION position.
If there is a problem with the damper the “Service Switch” can
be placed in the HOLD OPEN DAMPER position. When the
switch is placed in the HOLD OPEN DAMPER position the
damper disc will rotate to the open position and the heater
may be used until vent assembly is repaired or replaced. DO
NOT turn the damper disc manually; damage will occur to
the drive assembly if operated manually. Refer to TESTING
DAMPER OPERATION section of this manual for additional
information.
CIRCULATING PUMP
A circulating pump is used when a system requires a circulating
loop or there is a storage tank used in conjunction with the heater.
Refer to the piping diagrams in this manual for electrical hookup
information and install in accordance with the current edition of
the National Electrical Code NFPA 70.
Only all bronze circulators should be used with commercial water
heaters.
Although circulating pumps are oiled and operated by the
manufacturer some circulators must be oiled again before
operating. Please refer to manufacturer’s instructions.
DISHWASHING MACHINE REQUIREMENT
These appliances meet the NSF Standard 5 for sanitary
installations when used with the following leg kits, Part No
9003425205.
All dishwashing machines meeting the National Sanitation
Foundation requirements are designed to operate with water
ow pressures between 15 and 25 psi (103 kPa and 173 kPa).
Flow pressures above 25 psi (173 kPa), or below 15 psi (103
kPa), will result in improperly sanitized dishes. Where pressures
are high, a water pressure reducing or ow regulating control
valve should be used in 180°F (82°C) line to the dishwashing
machine, and should be adjusted to deliver water between
these limits.

7
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 THE
HEATER OR CONNECTIONS WILL NOT RESULT IN DAMAGE
TO THE ADJACENT AREA OR TO LOWER FLOORS OF THE
STRUCTURE.
When such locations cannot be avoided, it is recommended that
a suitable metal drain pan, adequately drained, be installed under
the appliance.
Water heater life depends upon water quality, water pressure
and the environment in which the water heater is installed. Water
heaters are sometimes installed in locations where leakage may
result in property damage, even with the use of a drain pan piped
to a drain. However, unanticipated damage can be reduced or
prevented by a leak detector or water shut-off device used in
conjunction with a piped drain pan. These devices are available
from some plumbing supply wholesalers and retailers, and detect
and react to leakage in various ways:
• Sensors mounted in the drain pan that trigger an alarm or turn
off the incoming water to the water heater when leakage is
detected.
• Sensors mounted in the drain pan that turn off the water supply
to the entire home when water is detected in the drain pan.
• Water supply shut-off devices that activate based on the water
pressure differential between the cold water and hot water
pipes connected to the water heater.
• Devices that will turn off the gas supply to a gas water heater
while at the same time shutting off its water supply.
WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE
METAL DRAIN PAN SHOULD BE INSTALLED UNDER THE
HEATER. Such pans should be fabricated with sides at least 2” (5
cm) deep, with length and width at least 2” (5 cm) greater than the
diameter of the heater and must be piped to an adequate drain.
The pan must not restrict combustion air ow.
LEVELING
If the unit is not level, insert the bolts which were used in crating
into the legs to correct this condition.
CLEARANCES
These heaters are approved for installation on combustible
ooring in an alcove when the minimum clearance from any
combustion construction are followed as indicated in gure 6
and Table 2.
The following units are approved for installation with side, rear
and ceiling clearances as indicated below:
The National Sanitation Foundation also recommends circulation
of 180°F (82°C) water. Where this is done, the circulation
should be very gentle so that it does not cause any unnecessary
turbulence inside the water heater. The circulation should be just
enough to provide 180°F (82°C) water at the point of take-off to
the dishwashing machine. Adjust ow by means of the plug cock
in the circulating line.
INSTALLATION INSTRUCTIONS
REQUIRED ABILITY
INSTALLATION OR SERVICE OF THIS WATER HEATER
REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED
TRADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR
SUPPLY, VENTING, GAS SUPPLY AND ELECTRICAL WORK
ARE REQUIRED.
WARNING
FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT
IN SERIOUS PERSONAL INJURY OR DEATH.
UNCRATING
The heater is shipped with the ue damper already installed. The
wiring conduit runs from the thermostat to the damper drive cover.
Before turning unit on, check to make sure the wiring conduit is
securely plugged into damper drive.
LOCATING THE HEATER
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.
WARNING
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 PILOT OR MAIN BURNER FLAMES
CAUSING FIRE OR EXPLOSION. SOME LOCAL CODES
PERMIT OPERATION OF GAS APPLIANCES IN SUCH AREAS
IF THEY ARE INSTALLED 18” (.50 m). 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 (7.6 cm) in
any direction. If the heater is installed in a carpeted alcove, the
entire oor shall be covered by the panel. Also, see the DRAIN
REQUIREMENTS.
THE HEATER SHALL BE LOCATED OR PROTECTED SO IT IS NOT
SUBJECT TO PHYSICAL DAMAGE BY A MOVING VEHICLE.
WARNING
FLAMMABLE ITEMS, PRESSURIZED CONTAINERS OR ANY
OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST

8
A
(RIGHT SIDE)
B
(LEFT SIDE)
C
(BACK)
D
(CEILING)
BCG370T120’s 1” (2.54 cm) 1” (2.54 cm) 1” (2.54 cm) 12” (30.48 cm)
BCG380T150’s 1” (2.54 cm) 1” (2.54 cm) 1” (2.54 cm) 12” (30.48 cm)
BCG380T180’s 1” (2.54 cm) 1” (2.54 cm) 1” (2.54 cm) 12” (30.48 cm)
BCG3100T199’s 1” (2.54 cm) 1” (2.54 cm) 1” (2.54 cm) 12” (30.48 cm)
BCG380T199’s 1” (2.54 cm) 1” (2.54 cm) 1” (2.54 cm) 12” (30.48 cm)
(A)BCG3100T200’s 1” (2.54 cm) 1” (2.54 cm) 1” (2.54 cm) 12” (30.48 cm)
(A)BCG3100T250’s 2” (5.08 cm) 2” (5.08 cm) 2” (5.08 cm) 12” (30.48 cm)
(A)BCG365T250’s 2” (5.08 cm) 2” (5.08 cm) 2” (5.08 cm) 12” (30.48 cm)
(A)BCG3100T275’s 2” (5.08 cm) 2” (5.08 cm) 2” (5.08 cm) 12” (30.48 cm)
(A)BCG365T300’s 2” (5.08 cm) 2” (5.08 cm) 2” (5.08 cm) 12” (30.48 cm)
(A)BCG385T360’s 3” (7.75 cm) 3” (7.75 cm) 3” (7.75 cm) 12” (30.48 cm)
(A)BCG3100T390’s 3” (7.75 cm) 3” (7.75 cm) 3” (7.75 cm) 12” (30.48 cm)
TABLE 2
In all installations the minimum combustible clearances from any
draft hood surface or vent piping shall be 6” (16cm). Vent piping
passing through a combustible wall or ceiling must be a continuous
run (no joints) and retain the 6” (16cm) clearance unless an
approved reducing thimble is used.
A service clearance of 24” (61cm) should be maintained from
serviceable parts, such as relief valves, ue bafes, ue damper
devices, thermostats, cleanout openings or drain valves.
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 MAINTENANCE section for details of tank cleanout
procedure.
AIR REQUIREMENTS
REFER TO THE CURRENT EDITION OF THE “NATIONAL FUEL
GAS CODE” ANSI Z223.1/NFPA 54.
WARNING
KEEPAPPLIANCEAREA CLEARAND FREE OF COMBUSTIBLE
MATERIALS, GASOLINE AND OTHER FLAMMABLES, VAPORS
AND LIQUIDS.
DO NOT OBSTRUCT THE FLOW OF COMBUSTION OR
VENTILATING AIR.
WARNING
FOR SAFE OPERATION PROVIDE ADEQUATE AIR FOR
COMBUSTION AND VENTILATION. AN INSUFFICIENT SUPPLY
OF AIR WILL CAUSE RECIRCULATION OF COMBUSTION
PRODUCTS RESULTING IN AIR CONTAMINATION THAT MAY
BE HAZARDOUS TO LIFE. SUCH A CONDITION OFTEN WILL
RESULT IN A YELLOW, LUMINOUS BURNER FLAME, CAUSING
CARBONING OR SOOTING OF THE COMBUSTION CHAMBER,
BURNERS AND FLUE TUBES AND CREATES A RISK OF
ASPHYXIATION.
Where an exhaust fan is supplied in the same room with a
heater, sufcient openings for air must be provided in the walls.
UNDERSIZED OPENINGS WILL CAUSE AIR TO BE DRAWN
INTO THE ROOM THROUGH THE CHIMNEY, CAUSING POOR
COMBUSTION. SOOTING MAY RESULT IN SERIOUS DAMAGE
TO THE HEATER AND RISK OF FIRE OR EXPLOSION.
UNCONFINED SPACE
In buildings of conventional frame, brick, or stone construction,
unconned spaces may provide adequate air for combustion,
ventilation and draft hood dilution.
If the unconned space is within a building of tight construction
(buildings using the following construction: weather stripping,
heavy insulation, caulking, vapor barrier, etc.), air for combustion,
ventilation and draft hood dilution must be obtained from
outdoors. The installation instructions for conned spaces in
tightly constructed buildings must be followed to ensure adequate
air supply.
ILLUSTRATION OF MINIMUM COMBUSTIBLE CLEARANCES IN AN ALCOVE
FIGURE 6

9
CONFINED SPACE
When drawing combustion and dilution air from inside a
conventionally constructed building to a conned space, such a
space shall be provided with two permanent openings, ONE IN OR
WITHIN 12 INCHES (30.5cm) OF THE ENCLOSURE TOP AND
ONE IN OR WITHIN 12 INCHES (30.5cm) OF THE ENCLOSURE
BOTTOM. Each opening shall have a free area of at least one
square inch per 1000 Btuh (2,225mm2/Kw) of the total input of all
appliances in the enclosure, but not less than 100 square inches
(645 square cm).
If the conned space is within a building of tight construction,
air for combustion, ventilation, and draft hood dilution must be
obtained from outdoors. When directly communicating with the
outdoors or communicating with the outdoors through vertical
ducts, two permanent openings, located in the above manner,
shall be provided. Each opening shall have a free area of not
less than one square inch per 4000 Btuh (8,900mm2/Kw) of the
total input of all appliances in the enclosure. If horizontal ducts
are used, each opening shall have a free area of not less than
one square inch per 2000 Btuh (4,450mm2/Kw) of the total input
of all appliances in the enclosure.
VENT REDUCER
The BCG3100T2508N, BCG365T2508N, & BCG3100T2758N all
models are shipped with an 8” to 6” diameter ue outlet adapter.
Each adapter ts on top of the installed ue damper. Use only vent
reducers supplied with the unit. The venting must comply with the
NATIONAL FUEL GAS CODE, ANSI Z223.1/NFPA 54.
FIGURE 7
VENTING
WARNING
THE INSTRUCTIONS IN THIS SECTION ON VENTING MUST
BE FOLLOWED TO AVOID CHOKED COMBUSTION OR RE-
CIRCULATION OF FLUE GASES. SUCH CONDITIONS CAUSE
SOOTING OR RISKS OF FIRE AND ASPHYXIATION.
Heater must be protected from freezing downdrafts.
Remove all soot or other obstructions from the chimney that will
retard a free draft.
Type B venting is recommended with these heaters. See table 3
TECHNICAL DATA VENTING.
This water heater must be vented in compliance with all local
codes, the current edition of the National Fuel Gas Code (ANSI-
Z223.1) and with the Category I Venting Tables.
If any parts of the vent system are exposed to ambient
temperatures below 35 degrees F (2 degrees C) they must be
insulated to prevent condensation.
• Do not connect the heater to a common vent or chimney with
solid fuel burning equipment. This practice is prohibited by
many local building codes as is the practice of venting gas
red equipment to the duct work of ventilation systems.
• Where a separate vent connection is not available and the vent
pipe from the heater must be connected to a common vent with
an oil burning furnace, the vent pipe should enter the smaller
common vent or chimney at a point above the large vent pipe.
FIGURE 8
MULTIPLE HEATER MANIFOLD
Figure 10 and table 3 should be used for horizontally manifolding
two or more heaters. Also see MULTIPLE-UNIT INSTALLATIONS of
MECHANICAL VENTING section for induced draft applications.
FIGURE 9
WATER LINE CONNECTIONS
This manual provides detailed installation diagrams (see pages
16-22 of this manual) for typical methods of application for the
water heaters.
The water heater may be installed by itself, or with a separate
storage tank, on both single and two-temperature systems.
When used with a separate storage tank, the circulation may
be either by gravity or by means of a circulating pump. When a
circulating pump is used it is important to note that the ow rate
should be slow so that there will be a minimum of turbulence
inside the heater.

10
TYPE B GAS VENT
Multiple Gas Fired Tank-Type Heaters
When venting mutiple tank type heaters using Type B
vent pipe, follow the installation diagram (gure 8) and
tables below which give sizing and data based upon
NFPA 54/ANSI Z223.
TECHNICAL DATA VENTING, TABLE 3
MODEL BCG370T1205_
Input: 120,00Btuh Total Vent Height (Feet)
Draft Hood: 5” 6 8 10 15 20 30 50 100
Input Btuh Rise Vent Connector Diameter (inches)
120,000 1 Ft. 7 7 7 6 6 6 6 6
120,000 2 Ft. 6 6 6 6 6 6 6 5
123,000 3 Ft. 6 6 6 6 6 5 5 5
Number Combined Input
of Heaters in Thousands of Btuh Manifold and Common Vent Diameter (In inches)
2 240 10 8 8 7 7 7 6 7
3 360 10 10 10 10 8 8 7 7
4 480 12 12 12 10 10 10 8 8
MODEL BCG380T1506_
Input: 154,000 Btuh Total Vent Height (Feet)
Draft Hood: 6” 6 8 10 15 20 30 50 100
Input Btuh Rise Vent Connector Diameter (in inches)
154,000 1 Ft. 8 8 7 7 7 7 7 7
154,000 2 Ft. 7 7 7 7 7 6 6 6
154,000 3 Ft. 7 7 7 6 6 6 6 6
Numbers Combined Input
of Heaters in Thousands of Btuh Manifold and Common Vent Diameter (in inches)
2 308 10 10 10 8 8 7 7 7
3 462 12 12 12 10 10 10 8 8
4 618 14 14 12 12 12 10 10 10
MODEL BCG380T1806_, BCG3100T1996_, BCG380T1996_, & (A)BCG3100T2006_
Input: 180,000, 199,000 Btuh Total Vent Height (Feet)
Draft Hood: 6” 6 8 10 15 20 30 50 100
Input Btuh Rise Vent Connector Diameter (in inches)
180,000 1 Ft. 8 8 8 8 8 7 7 7
190,000 - 8 8 8 8 8 7 7
199,000 - - 8 8 8 8 8 7
180,000 2 Ft. 8 8 7 7 7 7 7 7
190,000 8 8 8 7 7 7 7 7
199,000 8 8 8 8 7 7 7 7
179,000 3 Ft. 7 7 7 7 7 7 6 6
190,000 8 7 7 7 7 7 6 6
197,000 8 7 7 7 7 7 7 6
199,000 8 8 7 7 7 7 7 6
Number of Combined Input
Heaters in Thousands of Btuh Manifold & Common Vent Diameter
358 10 10 10 10 8 8 7 7
2 380 12 10 10 10 10 8 7 7
394/398 12 10 10 10 10 8 8 7
537 14 12 12 12 10 10 10 8
3 570 14 12 12 12 10 10 10 10
591/597 14 14 12 12 12 10 10 10
716 14 14 14 12 12 12 10 10
4 760 16 14 14 14 12 12 10 10
788/796 16 14 14 14 12 12 12 10
FIGURE 10

11
MODEL (A)BCG365T2508_, (A)BCG3100T2508_
Input: 250,000, 251,000 Total Vent Height (Feet)
Draft Hood: 6” 6 8 10 15 20 30 50 100
Input Btuh Rise Vent Connector Diameter (in inches)
250/251,000 1 Ft. - - - - - - 8 8
250/251,000 - - - 8 8 8 8 8
250/251,000 3 Ft. - 8 8 8 - 8 7 7
Number Combined Input
of Heaters in Thousands of Btuh Manifold and Common Vent Diameter (In inches)
2 480 14 12 12 10 10 10 8 8
500/502 14 12 12 10 10 10 10 8
3 720 14 14 14 12 12 12 10 10
750/753 16 14 14 14 12 12 10 10
4 960/1000/1004 18 16 16 14 14 14 12 12
MODEL (A)BCG3100T2758_
Input: 275,000 Btuh Total Vent Height (Feet)
Draft Hood: 6” 6 8 10 15 20 30 50 100
Input Btuh Rise Vent Connector Diameter (in inches)
275,000 2 Ft. - - - - - 8 8 8
275,000 3 Ft. - - - 8 8 8 8 8
Numbers Combined Input
of Heaters in Thousands of Btuh Manifold and Common Vent Diameter (in inches)
2 550 - - - 12 10 10 10 10
3 825 - - - 14 14 12 12 12
4 1100 - - - 16 14 14 12 12
MODEL (A)BCG365T3008_
Input: 305,000 Btuh Total Vent Height (Feet)
Draft Hood: 8” 6 8 10 15 20 30 50 100
Input Btuh Rise Vent Connector Diameter (in inches)
315,000 1 Ft. - - 10 10 10 10 10 10
305,000 2 Ft. 10 10 10 10 10 10 8 8
365,000 3 Ft. 10 10 10 10 10 8 8 8
Number of Combined Input
Heaters in Thousands of Btuh Manifold & Common Vent Diameter
2 610 14 14 12 12 12 10 10 10
3 915 16 16 16 14 14 12 12 12
4 1220 18 18 16 16 16 14 14 12
MODEL (A)BCG385T3608_, (A)BCG3100T3908_
Input: 365,000, 399,000 Total Vent Height (Feet)
Draft Hood: 8” 6 8 10 15 20 30 50 100
Input Btuh Rise Vent Connector Diameter (in inches)
365,000 1 Ft. - - - - - 10 10 10
400,000 - - - - - - 10 10
365,000 2 FT. 12 12 10 10 10 10 10 10
400,000 12 12 12 12 10 10 10 10
365,000 3 FT. 10 10 10 10 10 10 10 10
400,000 12 10 10 10 10 10 10 10
Number of Combined Input
Heaters in Thousands of Btuh Manifold & Common Vent Diameter (inches)
2 730 14 14 14 12 12 12 10 10
800 16 14 14 14 12 12 10 10
3 1095 18 18 16 16 14 14 12 12
1200 18 18 18 16 16 14 14 12
4 1460 20 20 18 18 16 16 14 12
1600 22 20 20 18 18 16 14 14
TECHNICAL DATA VENTING, TABLE 3 (Continued)

12
If a water heater is installed in a closed water system, contact
the water supplier or local plumbing inspector on how to control
this situation.
WATER(POTABLE) HEATINGANDSPACEHEATING
1. All piping components connected to this unit for space heating
applications shall be suitable for use with potable water.
2. Toxic chemicals, such as those used for boiler treatment, shall
NEVER be introduced into this system.
3. This unit may NEVER be connected to any existing heating
system or component(s) previously used with a non-potable
water heating appliance.
4. When the system requires water for space heating at
temperatures higher than required for domestic water purposes,
a tempering valve must be installed. Please refer to installation
diagrams on pages 15 through 20 in this manual for suggested
piping arrangements.
CAUTION
As water is heated, it expands (thermal expansion). In a closed
system, the volume of water will grow. As the volume of water
grows, there will be a corresponding increase in water pressure
due to thermal expansion. Thermal expansion can cause
premature tank failure (leakage). This type of failure is not
covered under the limited warranty. Thermal expansion can also
cause intermittent temperature-pressure relief valve operation:
water discharged from the valve due to excessive pressure build
up. The temperature-pressure relief valve is not intended for the
constant relief of thermal expansion. This condition is not covered
under the limited warranty.
A properly-sized thermal expansion tank should be installed
on all closed systems to control the harmful effects of thermal
expansion. Contact a plumbing service agency or your retail
supplier regarding the installation of a thermal expansion tank.
SYSTEM CONNECTIONS
The system installation must conform to these instructions and to
the local code authority having jurisdiction. Good practice requires
that all heavy piping be supported.
THERMOMETERS (Not Supplied)
Thermometers should be obtained and eld installed as shown in
the installation diagrams.
Thermometers are installed in the system as a means of detecting
the temperature of the outlet water supply.
RELIEF VALVE
This water heater is equipped with a combination temperature-
pressure relief valve that complies with the standard for
relief valves for hot water supply system, ANSI Z21.22-CSA
4.4. FOR SAFE OPERATION OF THE WATER HEATER,
THE RELIEF VALVE(S) MUST NOT BE REMOVED OR
PLUGGED.
ASME ratings cover pressure relief capacities. ANSI ratings cover
release rate with temperature actuation.
In addition to the appliance relief valve, each remote storage tank
which may be used in conjunction with this appliance shall also be
installed with a properly sized, rated and approved combination
temperature (ANSI) and pressure (ASME) relief valve(s).
WARNING
T H E P U R P O S E O F R E L I E F VA LV E I S T O AV O I D
EXCESSIVE PRESSURE OR TEMPERATURE INTO THE
STEAM RANGE, WHICH MAY CAUSE SCALDING AT
FIXTURES, TANK EXPLOSION, SYSTEM OR HEATER
DAMAGE. NO VALVE IS TO BE PLACED BETWEEN THE
RELIEF VALVE AND TANK.
Your local code authority may have other specic relief valve
requirements.
A DRAIN LINE MUST BE CONNECTED TO THE RELIEF
VALVE TO DIRECT DISCHARGE TO A SAFE LOCATION TO
AVOID SCALDING OR WATER DAMAGE. THIS LINE MUST
NOT BE REDUCED FROM THE SIZE OF THE VALVE OUTLET
AND MUST NOT CONTAIN VALVES, RESTRICTIONS NOR
SHOULD IT BE LOCATED IN FREEZING AREAS. DO NOT
THREAD OR CAP THE END OF THIS LINE. RESTRICTED
OR BLOCKED DISCHARGE WILL DEFEAT THE PURPOSE
OF THE VALVE AND IS UNSAFE. DISCHARGE LINE SHALL
BE INSTALLED TO ALLOW COMPLETE DRAINAGE OF
BOTH THE VALVE AND LINE.
See SERVICE INFORMATION section for procedure and
precautions.
GAS PIPING
Contact your local gas service company to ensure that adequate
gas service is available and to review applicable installation codes
for your area.
Size the main gas line in accordance with Table 4. The gures
shown are for straight lengths of pipe at 0.5 in. W.C. pressure
drop, which is considered normal for low pressure systems. Note:
Fittings such as elbows, tees and line regulators will add to
the pipe pressure drop. Also refer to the current edition of the
National Fuel Gas Code.
TABLE 4 - GAS SUPPLY LINE SIZES (IN INCHES)*
MAXIMUM CAPACITY OF PIPE IN
CUBIC FEET PER HOUR
LENGTH NOMINAL IRON PIPE SIZES (INCHES)
IN
FEET 1/2” 3/4” 1” 1 1/4” 1 1/2” 2” 2 1/2” 3” 4”
10 175 360 680 1400 2100 3960 6300 11000 23000
20 120 250 465 950 1460 2750 4360 7700 15800
30 97 200 375 770 1180 2200 3520 6250 12800
40 82 170 320 660 990 1900 3000 5300 10900
50 73 151 285 580 900 1680 2650 4750 9700
60 66 138 260 530 810 1520 2400 4300 8800
70 61 125 240 490 750 1400 2250 3900 8100
80 57 118 220 460 690 1300 2050 3700 7500
90 53 110 205 430 650 1220 1950 3450 7200
100 50 103 195 400 620 1150 1850 3250 6700
125 44 93 175 360 550 1020 1650 2950 6000
150 40 84 160 325 500 950 1500 2650 5500
175 37 77 145 300 460 850 1370 2450 5000
200 35 72 135 280 430 800 1280 2280 4600

13
WARNING
THE HEATER IS NOT INTENDED FOR OPERATION AT
HIGHER THAN 14.0” W.C.(3.5 kPa) (1/2 POUND PER SQUARE
INCH GAGE- 3.5 kPa) SUPPLY GAS PRESSURE. EXPOSURE
TO HIGHER SUPPLY PRESSURE MAY CAUSE DAMAGE
TO THE GAS VALVE WHICH COULD RESULT IN FIRE OR
EXPLOSION. IF OVERPRESSURE HAS OCCURRED SUCH
AS THROUGH IMPROPER TESTING OF GAS LINES OR
EMERGENCY MALFUNCTION OF THE SUPPLY SYSTEM, THE
GAS VALVE MUST BE CHECKED FOR SAFE OPERATION.
MAKE SURE THAT THE OUTSIDE VENTS ON THE SUPPLY
REGULATORS AND THE SAFETY VENT VALVES ARE
PROTECTED AGAINST BLOCKAGE. THESE ARE PARTS
OF THE GAS SUPPLY SYSTEM, NOT THE HEATER. VENT
BLOCKAGE MAY OCCUR DURING ICE STORMS.
IT IS IMPORTANT TO GUARD AGAINST GAS VALVE FOULING
FROM CONTAMINANTS IN THE GAS WAYS. SUCH FOULING
MAY CAUSE IMPROPER OPERATION, FIRE OR EXPLOSION.
IF COPPER SUPPLY LINES ARE USED THEY MUST BE
INTERNALLY TINNED AND CERTIFIED FOR GAS SERVICE.
BEFORE ATTACHING THE GAS LINE, BE SURE THAT ALL GAS
PIPE IS CLEAN ON THE INSIDE.
TO TRAP ANY DIRT OR FOREIGN MATERIAL IN THE
GAS SUPPLY LINE, A DIRT LEG (SOMETIMES CALLED
SEDIMENT TRAP OR DRIP LEG) MUST BE INCORPORATED
IN THE PIPING (SEE FIG. 11). THE DIRT LEG MUST BE
FIGURE 12
READILY ACCESSIBLE AND NOT SUBJECT TO FREEZING
CONDITIONS. INSTALL IN ACCORDANCE WITH
RECOMMENDATIONS OF SERVING GAS SUPPLIERS.
REFER TO THE CURRENT EDITION OF THE NATIONAL
FUEL GAS CODE.
To prevent damage, care must be taken not to apply too much
torque when attaching gas supply pipe to gas valve inlet.
Apply joint compounds (pipe dope) sparingly and only to the
male threads of pipe joints. Do not apply compounds to the rst
two threads. Use compounds resistant to the action of liqueed
petroleum gases.
GAS PIPING AND DIRT LEG INSTALLATION
FIGURE 11

14
INSTALLATION DIAGRAMS-TOP INLET/OUTLET USAGE
GENERAL
The type, size and location of the relief valves must be in
accordance with local codes. The locations of the relief valves
shown in the installation diagrams are typical. The heater has a
factory installed high temperature limit switch and temperature
and pressure relief valve.
Cold water lines to heater should be installed as shown in order
to minimize gravity circulation of hot water to building cold water
lines.
A listed temperature and pressure relief valve of adequate capacity
is installed on the heater. The locations shown in the installation
diagrams on the following pages are typical.
The discharge opening of the temperature and pressure relief
valve, located in front of the heater must be piped to an open drain
and should not be subject to freezing temperatures.
Install in accordance with all local codes.
Use of the top inlet water connection requires installation of an inlet
dip tube (refer to gure 11). The tube is supplied in the heater.
Follow caution labels if applying heat to this tting. Do not allow
pipe dope to contact the plastic tube during installation.
CODE RESTRICTIONS
Use of the top inlet water connection is not permitted on
installations in the state of North Carolina, due to the material of
the tube (Polypropylene). Where such code restrictions exist, use
only lower inlet tank connection. This may also require a heat
trap - check local codes. The “Top Outlet” connection may still be
used on these applications. Plug or cap all unused openings in
the tank before lling with water.
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE
TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE
CONTROL WARNING ON PAGE 25. IF HIGHER PREHEAT
TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE
BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT
WATER SUPPLIED TO FIXTURES.
TUBE INLET INSTALLATION
FIGURE 13
BEFORE PLACING THE HEATER IN OPERATION, CHECK FOR
GAS LEAKAGE. Use soap and water solution or other material
acceptable for the purpose in locating the leaks. DO NOT USE
MATCHES, CANDLES, FLAME OR OTHER SOURCES OF
IGNITION FOR THIS PURPOSE.
DISCONNECT THE HEATER AND ITS MANUAL GAS
SHUT-OFF VALVE FROM THE GAS SUPPLY PIPING
SYSTEM DURING ANY SUPPLY PRESSURE TESTING
EXCEEDING 1/2 PSIG (3.5 kPa). GAS SUPPLY LINE
MUST BE CAPPED WHEN DISCONNECTED FROM
THE HEATER FOR TEST PRESSURES OF 1/2 PSIG
(3.5 kPa) OR LESS. THE APPLIANCE NEED NOT BE
DISCONNECTED, BUT MUST BE ISOLATED FROM THE
SUPPLY PRESSURE TEST BY CLOSING THE MANUAL GAS
Shut-off VALVE.
GAS METER SIZE — NATURAL GASES ONLY
Be sure the gas meter has sufcient capacity to supply the full
rated gas input of the water heater as well as the requirements of
all other gas red equipment supplied by the meter. If gas meter
is too small, ask the gas company to install a larger meter having
adequate capacity.
GAS PRESSURE REGULATOR
The gas pressure regulator is built into the gas valve and is
equipped to operate on the gas specied on model and rating
plate. The regulator is factory adjusted to deliver gas to burner
at correct water column pressure allowing for a nominal pressure
drop through the controls.
The minimum gas supply pressure for input adjustment must not
be less than 4.5” w.c. (1.12 kPa) for natural gas and 11.0” w.c.
(2.74 kPa) for propane gas.
Do not subject the combination gas valve to inlet gas
pressures of more than 14.0” W.C. (3.48 kPa) - natural gas,
14.0” W.C. (3.48 kPa)- propane gas. A service regulator is
necessary if higher gas pressures are encountered.
Gas pressure specied in Table 5, refer to ow pressure taken at
pressure tap of automatic gas valve while heater is operating.
GROUNDING INSTRUCTIONS
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.
HEATER WIRING
All electrical work must be installed in accordance with the current
edition of the National Electrical Code NFPA 70 and must conform
to all local code authority having jurisdiction. AN ELECTRICAL
GROUND IS REQUIRED TO REDUCE RISK OF ELECTRICAL
SHOCK OR POSSIBLE ELECTROCUTION (see FIGURE 12).
If any of the original wire as supplied with the appliance must be
replaced, use only type 105°C thermoplastic or equivalent. 250°C
type F must be used for the ame sensor leads and the spark
ignition cable must be high voltage 250°C.

15
VERTICAL STORAGE TANK AND FORCED CIRCULATION
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE
CONTROL WARNING ON PAGE 25. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER
OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.
HORIZONTAL STORAGE TANK AND FORCED CIRCULATION

16
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE
TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE
CONTROL WARNING ON PAGE 25. IF HIGHER PREHEAT
TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE
BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT
WATER SUPPLIED TO FIXTURES.
TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE STORAGE
WITH RECIRCULATION OF SANITIZING LOOP
NOTE 1: TOGGLE SWITCH CONTROLS 180°F (82°C) WATER
CIRCULATION. INSTALL ON OR CLOSE TO DISHWASHING
MACHINE. TOGGLE SWITCH MUST BE CLOSED (ON) DURING
THE RINSE OPERATION AND OPEN (OFF) WHEN DISHWASHER
IS NOT OPERATING OR WHEN ON LONG STANDBY.
NOTE 2: INSTALL LINE TEMPERATURE CONTROL IN AN
UNINSULATED TEE BEYOND THE DISHWASHING MACHINE
TAKEOFF IN THE SANITIZING LOOP. CONTROL SHOULD BE
SET AT 185°F (85°C).
NOTE 3: ADJUST PLUG COCK SO THE SANITIZING LOOP FLOW RATE
DOES NOT CAUSE UNNECESSARY TURBULENCE IN THE
TANK.
* TEMPERED WATER LOOP, IF USED, CONNECT TO
POINT “A”.
**PIPE RELIEF VALVE TO OPEN DRAIN.
INSTALL IN ACCORDANCE WITH LOCAL CODES.
CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACKFLOW
PREVENTER, CHECK VALVE OR WATER METER WITH
CHECK VALVE, PROVISIONS FOR THERMAL EXPANSION OF
WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED.
INSET A

17
INSTALLATION DIAGRAMS-SIDE INLET/OUTLET USAGE
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE
TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE
CONTROL WARNING ON PAGE 25. IF HIGHER PREHEAT
TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE
BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER
SUPPLIED TO FIXTURES.
A listed temperature and pressure relief valve of adequate
capacity is installed on the heater. The locations shown in the
installation diagrams on the following pages are typical.
TWO TEMPERATURE - TWO HEATERS, ONE PRE-HEATER/ONE - BOOSTER HEATER
WITH OR WITHOUT BUILDING RECIRCULATION
The discharge opening of the temperature and pressure
relief valve must be piped to an open drain and should not be
subject to freezing conditions. DO NOT REDUCE, BLOCK
OR PLUG THE DISCHARGE OPENING OF THE VALVE.
CIRCULATING RETURN LINE CONNECTIONS
- FROM FIXTURE LOOP, IF USED, CONNECT TO PREHEATER INLET.
- FROM BOOSTED TEMPERATURE LOOP, IF USED CONNECT TO
BOOSTER INLET.
†AVALAIBLE FROM AMERICAN.
*PIPE RELIEF VALVE TO OPEN DRAIN.
INSTALL IN ACCORDANCE WITH LOCAL CODES.
INSET A

18
ONE OR TWO TEMPERATURE - ONE HEATERS,HIGH TEMPERATURE
STORAGE WITH OR WITHOUT RECIRCULATION
HEATER WITH OR WITHOUT MIXING VALVE
HEATER WITH MIXING VALVE AND RECIRCULATED SANITIZING LOOP
NOTE 1: TOGGLE SWITCH CONTROLS 180°F (82°C)
WATER CIRCULATION. INSTALL ON OR
CLOSE TO DISHWASHING MACHINE. TOGGLE
SWITCH MUST BE CLOSED (ON) DURING THE
RINSE OPERATION AND OPEN (OFF) WHEN
DISHWASHER IS NOT OPERATING OR WHEN
ON LONG STANDBY.
NOTE 2: INSTALL LINE TEMPERATURE CONTROL
IN AN UNINSULATED TEE BEYOND THE
DI SHWAS HING MACH INE TAKEO FF
IN THE SANITIZING LOOP. CONTROL
SHOULD BE SET AT 185°F (85°C).
NOTE 3: ADJUST PLUG COCK SO THE SANITIZING
LOOP FLOW RATE DOES NOT CAUSE
UNNECESSARY TURBULENCE IN THE
TANK.
* PIPE RELIEF VALVE TO OPEN DRAIN.
INSTALL IN ACCORDANCE WITH LOCAL
CODES.
CIRCULATING RETURN LINE CONNECTIONS.
- TEMPERED WATER LOOP, IF USED,
CONNECT TO POINT “R”.
- STORED TEMPERATURE WATER LOOP, IF USED,
CONNECT TO COLD WATER INLET.
CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACKFLOW
PREVENTER, CHECK VALVE OR WATER METER WITH CHECK VALVE,
PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER
SYSTEM MUST BE PROVIDED.
DANGER
TEMPERATURE SETTING SHOULD NOT
EXCEED SAFE USE TEMPERATURE AT
FIXTURES. SEE WATER TEMPERATURE
CONTROL WARNING ON PAGE 25. IF HIGHER
PREHEAT TEMPERATURES ARE NECESSARY
TO OBTAIN ADEQUATE BOOSTER OUTPUT,
ADD AN ANTI-SCALD VALVE FOR HOT WATER
SUPPLIED TO FIXTURES.
INSET A

19
TWO TEMPERATURE - TWO PRE-HEATERS WITH MIXING VALVE OR
BOOSTER HEATER WITH OR WITHOUT BUILDING RECIRCULATION
TWO PRE-HEATERS WITH MIXING VALVE
TWO PRE-HEATERS WITH BOOSTER HEATER
DANGER
TEMPERATURE SETTING SHOULD NOT
EXCEED SAFE USE TEMPERATURE AT
FIXTURES. SEE WATER TEMPERATURE
CONTROL WARNING ON PAGE 25. IF HIGHER
PREHEAT TEMPERATURES ARE NECESSARY
TO OBTAIN ADEQUATE BOOSTER OUTPUT,
ADD AN ANTI-SCALD VALVE FOR HOT WATER
SUPPLIED TO FIXTURES.
INSET A

20
MEDIUM TEMPERATURE - ONE HEATER WITH AUXILIARY STORAGE TANK
FORCED CIRCULATION WITH OR WITHOUT BUILDING RECIRCULATION
VERTICAL STORAGE TANK
HORIZONTAL STORAGE TANK
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED
SAFE USE TEMPERATURE AT FIXTURES. SEE WATER
TEMPERATURE CONTROL WARNING ON PAGE 25. IF
HIGHER PREHEAT TEMPERATURES ARE NECESSARY
TO OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN
ANTI-SCALD VALVE FOR HOT WATER SUPPLIED TO
FIXTURES.
* PIPE RELIEF VALVE TO OPEN DRAIN.
** WHEN USING AN AMERICAN T-140
-200, -350 OR -400 STORAGE TANK,
USE LOWER 3/4” OPENING FOR TANK
TEMPERATURE CONTROL.
IF BUILDING CIRCULATING LOOP IS
USED, CONNECT TO AN OPENING
NEAR THE BOTTOM OF THE TANK.
CAUTION: IF BUILDING COLD WATER SUPPLY HAS A
BACKFLOW PREVENTER, CHECK VALVE OR WATER
METER WITH CHECK VALVE, PROVISIONS FOR
THERMAL EXPANSION OF WATER IN THE HOT WATER
SYSTEM MUST BE PROVIDED.
*PIPE RELIEF VALVE TO OPEN DRAIN
INSTALL IN ACCORDANCE WITH LOCAL CODES.
INSET A