Home > American Water Heater > Gas Heater > American Water Heater 98 Gallon 80 Thermal Efficiency UltraLow NOx Heavy Duty Commercial Gas Water Heater User Manual

American Water Heater 98 Gallon 80 Thermal Efficiency UltraLow NOx Heavy Duty Commercial Gas Water Heater User Manual

    Download as PDF Print this page Share this page

    Have a look at the manual American Water Heater 98 Gallon 80 Thermal Efficiency UltraLow NOx Heavy Duty Commercial Gas Water Heater User Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 32 American Water Heater manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.

    							1
    Instruction Manual
    PRINTED 1215 325367-002
    KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE 
    WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
     ULTRA LOW NOX COMMERCIAL GAS WATER HEATERS
    • For Your Safety •
    AN ODORANT IS ADDED TO THE GAS USED 
    BY THIS WATER HEATER.
    MODELS 
    BCN375T754NV/BCN3100T754NV Series 100
    INSTALLATION - OPERATION - SERVICE   
    - MAINTENANCE - LIMITED WARRANTY
    PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
    Read and understand this instruction
    m anual and the safety messages
    herein before installing, operating or
    servicing this water heater .
    Failure to follow these instructions an d
    safety messages could result in deat h
    or serious injury.
    T his manual must remain with th e
    water heater.
    Low Lead Content
    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  b y  a  qualified  installer,
    service agency or the gas supplier.•
    •
    •
    •
    www .americanwaterheate r.co m
    American Wa ter Heater
    Johnson City, TN 37605 
    						
    							2
    SAFE INSTALLATION, USE AND SERVICE......................3
    APPROVALS  ...................................................................... 3
    GENERAL SAFETY INFORMATION .................................. 4
    INTRODUCTION ................................................................ 5
      Abbreviations Used  ..................................................... 5
    	 Qualified	Installer	or	Service	 Agency........................... 5
    	 Preparing	for	the	New	Installation  ...............................5
    INSTALLATION CONSIDERATIONS ................................. 6
    	 Rough	In	Dimensions  .................................................. 6
    	 Thermometers  ............................................................. 7
    	 Facts	to	Consider	 About	The	Location  ........................ 7
    	 High	 Altitude ................................................................ 8
    	 Clearances  .................................................................. 8
      Insulation Blankets  ...................................................... 9
      Hard Water  .................................................................. 9
    	 Circulation	Pumps  ....................................................... 9
    INSTALLATION REQUIREMENTS .................................. 10
    	 Gas	Supply	Systems ................................................. 10
    	 Gas	Pressure	Requirements  .....................................10
    	 Supply	Gas	Regulator  ............................................... 10
    	 Mixing	Valves ............................................................ 10
    	 Water	Piping  .............................................................. 11
    	 Closed	Water	Systems  .............................................. 11
    	 Thermal	Expansion  ................................................... 11
    	 Temperature	-	Pressure	Relief	Valve ......................... 11
    	 Filling	the	Water	Heater ............................................. 12
    	 Air	Requirements....................................................... 12
    	 Unconfined	Space  ..................................................... 13
    	 Confined	Space  ......................................................... 13
    	 Fresh	 Air	Openings	for	Confined	Spaces  .................. 13
    	 Outdoor	 Air	Through	 Two	Openings  .......................... 13
    	 Outdoor	 Air	Through	One	Opening  ........................... 13	 Outdoor	
    Air	Through	 Two	Horizontal	Ducts  ............... 14
    	 Outdoor	 Air	Through	 Two	Vertical	Ducts ................... 14
    	 Air	From	Other	Indoor	Spaces .................................. 14
    	 Venting  ...................................................................... 14
    	 Gas	Piping  ................................................................. 16
    	 Sediment	 Traps ......................................................... 17
    LIGHTING & OPERATING INSTRUCTIONS  ................... 18
    TEMPERATURE REGULATION ...................................... 19
    FOR YOUR INFORMATION ............................................. 19
      Start Up Conditions  ................................................... 19
      Operational Conditions  .............................................. 20
    PERIODIC MAINTENANCE  ............................................. 21
    	 Venting	System	Inspection  ........................................21
    	 Burner	Inspection  ...................................................... 21
    	 Burner	Cleaning  ........................................................ 21
    	 Housekeeping  ........................................................... 21
    	 Anode	Rod	Inspection  ............................................... 22
    	 Temperature-Pressure	Relief	Valve	 Test ................... 22
    RECOMMENDED PROCEDURE FOR PERIODIC  
    REMOVAL OF LIME DEPOSITS FROM TANK 
    TYPE COMMERCIAL WATER HEATERS ........................ 22
    	 Deliming	Solvents...................................................... 23
    	 Tank	Cleanout	Procedure  ..........................................23
    	 Deliming	Using	Flo-Jug	Method  ................................23
    	 Draining	and	Flushing  ............................................... 24
    	 Service ...................................................................... 24
    LEAKAGE CHECKPOINTS .............................................. 25
    TROUBLESHOOTING GUIDELINES  ...............................26
    WATER PIPING DIAGRAMS  ............................................ 27
    NOTES ........................................................................\
    ..... 33
    WARRANTY  ..................................................................... 35
    TABLE OF CONTENTS 
    						
    							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
    Low Lead Content 
    						
    							5
    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:
    •	 UL 	-	Underwriters	Laboratories	Inc.
    •	 ANSI	-	 American	National	Standards	Institute
    •	 NFPA 	-	National	Fire	Protection	 Association
    •	 ASME	-	 American	Society	of	Mechanical	Engineers
    •	 AHRI	-	 Air-Conditioning,	Heating	and	Refrigeration	Institute
    •  CAN - Canada
    •	 EPACT 	-	Energy	Policy	 Act
    •	 CSA 	-	Canadian	Standards	 Association	
    This	 gas-fired	 water	heater	 is	design	 certified	 by	Underwriters 	
    Laboratories	 Inc.	under	 American	 National	Standard/CSA 	Standard	  
    for	Gas	Water	Heaters	 ANSI	Z21.10.3	•	CSA	4.3	(current	edition).
    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	 2006	Sec.	3.3.83:	 “Qualified	 Agency”	-	“Any	 individual,	
    firm,	 corporation	 or	company	 that	either	 in	person	 or	through	 a	
    representative	 is	engaged	 in	and	 is	responsible	 for	(a)	 the	 installation, 	
    testing	 or	replacement	 of	gas	 piping	 or	(b)	 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.
    PREPARING FOR THE INSTALLATION
    1.	 Read	 the	General	 Safety	Information	 section,	page	4	of	 this 	
    manual	 first	and	then	 the	entire	 manual	 carefully.	 	 If	you 	
    don’t 	follow	 the	safety 	rules, 	the	 water 	heater 	will	 not	operate 	p r o p e r l y.
    		I t	c o u l d 	c a u s e 	D E AT H , 	S E R I O U S 	B O D I LY	I N J U R Y 	
    AND/OR	PROPERTY	DAMAGE.
    	 This 	manual 	contains 	instructions 	for 	the 	installation, 	
    o p e r a t i o n , 	a n d	m a i n t e n a n c e 	o f	t h e 	g a s - f i r e d 	w a t e r	h e a t e r. 		I t	
    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, 	
    READ THE ENTIRE MANUAL BEFORE ATTEMPTING TO 
    INSTALL OR OPER ATE 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/
    N FPA 	5 4 	o r 	CA N /C S A - B14 9.1 	t h e 	N atur al 	G as 	an d 	Pr o pane 	
    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 	por tion 	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, 	see 	Figures 	
    3 and 7.
    	 E xamine 	t he 	lo c at i on 	to 	ensure 	t he 	water 	heater 	c omplie s 	w it h 	
    the	 Fact	 to	Consider	 About	The	Location	 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.
    6. 		Massachusetts	 Code	requires	 this	water	 heater	 to	be	 installed 	
    in	 accordance	 with	Massachusetts 	248-CMR	 2.00:	State 	
    Plumbing	Code	and	248-CMR	5.00.
    7.	 Complies	 with	SCAQMD	 rule	#1146.2	 and	districts	 having	
    equivalent	NOx	requirements.
    INTRODUCTION 
    						
    							6
    ROUGH IN DIMENSIONS
    INSTALLATION CONSIDERATIONS
    FIGURE 1.
    K
    HOT WATER OUTLET
    DRAIN VA LV E
    HOTCOLD
    TOP VIEW
    L
    GAS INLET
    INSTALL IN ACCORDANCE WITH LOCAL CODES
    DRAIN VALVE
    K
    COLD WATER INLET
    OUTER DOOR
    (BURNER ASSEMBLY  BEHIND) DRAFT HOOD
    F
    H
    J
    B
    D
    A
    E M
    G
    TEMPERATURE
    AND PRESSURE
    RELIEF VALVE
    C
    WATER HEATER CONTROL
    TABLE 1.
    Units AB CDEFGH JKLMInches70 1/2 66 1/230 15/16 27 3/415 3/16 415 3/4 161 1/41  1/41/211 15/16
    CM 179\f1 168\f9 78\f670\f538\f610\f240\f040\f63 \f2NP\bN P\b30\f3
    Inches 62 1/165 829 1/22 5 1/41 5 7/8 415 1/4   16 21 1/212 1/2
    CM 157\f6 147\f3 74\f964\f140\f310\f238\f740\f65 \f1NP\bN P\b31\f8
    ModelI NPUT RATE
    °F30405060708090100 110120130140
    GPH 246184 1471231 0592 827467615753
    °C 17 2228333944505661677278
    LPH 930698 5584653 99349 3102792542 33215 199
    °F 30405060708090100 110120130140
    GPH 243182 1461211 0491 817366615652
    °C 17 2228333944505661677278
    LPH 919689 5514593 94345 3062762512 30212 197
    * Recover rang bas\9ed on 81% thermal \9ecienc y
    ** Recover rang ba\9sed on 80% thermal\9 ecienc y
    Natural DIMENSIONS
    Model
    BCN3100*
    BCN375* *75,100 B\bU/H
    22 kW
    75,100 B\bU/H
    22 k
    W
    RECOVERY RATINGS
    Recovery in US Gallons/hr or Liters/hr at Indicated Temperature Rise in \
    Fahrenheit or Celsius
    BCN375
    NaturalBCN3100 
    						
    							7
    THERMOMETERS (Not Supplied)
    Thermometers	should	be	obtained	and	field	installed.
    Thermometers		are	installed	 in	the	 system	 as	a	means	 of	detecting	
    the	temperature	of	the	outlet	water	supply.
    This	 Water	 Heater	 has	been	 design	 certified	 as	complying	 with	
    ANSI	 Z21.10.3-CSA 	4.3	 current	 edition	for	water	 heaters	 and	is	
    considered	suitable	for:
    Water	 (Potable)	 Heating	and	Space	 Heating: 	All	 models	 are	
    considered	 suitable	for	water	 (potable)	 heating	and	space	 heating. 		
    HOTTER	WATER	CAN	SCALD: 	
    Water	 heaters	 are	intended	 to	produce	 hot	water.	 Water	heated	 to	a	
    temperature	 which	will	satisfy	 space	heating,	 clothes	washing,	 dish	
    washing, 	and	 other	 sanitizing	 needs	can	scald	 and	permanently	 injure	
    you	 upon	 contact.	 Some	people	 are	more	 likely	to	be	 permanently	
    injured	 by	hot	 water	 than	others.	 These	include	 the	elderly,	 children,	
    the	 infirm,	 or	physically/mentally	 handicapped.	If	anyone	 using	hot	
    water	 in	your	 home	 fits	into	 one	 of	these	 groups	 or	if	there	 is	a	local	
    code	 requiring	 a	certain	 temperature	 water	at	the	 hot	water	 tap,	then	
    you	 must	 take	special	 precautions.	 In	addition	 to	using	 the	lowest	
    possible	 temperature	 setting	that	satisfies	 your	hot	water	 needs, 	
    a	 means	 such	as	a	*Mixing	 Valve	should	 be	used	 at	the	 hot	water	
    taps	 used	 by	these	 people	 or	at	the	 water	 heater.	 Mixing	valves	are	
    available	 at	plumbing	 supply	or	hardware	 stores.	Consult	 a	qualified	
    installer	 or	service	 technician.	 Follow	mixing	valve	manufacturer’s	
    instructions	 for	installation	 of	valves.	 Before	changing	 the	factory	
    setting	 on	the	 thermostat,	 read	the	“Temperature	 Regulation”	section	
    in	this	manual,	see	Figures	17	and	18.
    FACTS TO CONSIDER ABOUT THE LOCATION
    Carefully	 choose	an	indoor	 location	 for	the	 new	 water	 heater, 	
    because	 the	placement	 is	a	very	 important	 consideration	 for	
    the	 safety	 of	the	 occupants	 in	the	 building	 and	for	the	 most 	
    economical	 use	of	the	 water	 heater.	 This	water	 heater	 is	not 	
    for	use	in	manufactured	(mobile)	homes	or	outdoor	installation.
    Whether	 replacing	 an	old	 water	 heater 	or	 putting	 the	water	 heater 	
    in	 a	new	 location,	 the	following	 critical	points	must	be	observed:
    1.		Select	 a	location	 indoors	as	close	 as	practical	 to	the	 gas	 vent	 or	
    chimney	 to	which	 the	water	 heater	 vent	is	going	 to	be	 connected,	
    and	as	centralized	with	the	water	piping	system	as	possible.		
    2. 		Selected	 location	must	provide	 adequate	 clearances	 for	
    servicing	and	proper	operation	of	the	water	heater.
    Installation	 of	water	 heater	 must	be	accomplished	 in	such	 a	manner	 that	
    if 	the	 tank 	or 	any 	connections 	should	 leak,	flow	 will	not	cause	 damage	 to	 the	
    structure.	 For	this	 reason,	 it	is	 not	 advisable	 to	install	 water	heater 	
    in	 an	 attic	 or	upper	 floor.	When	 such	locations	 cannot	be	avoided,	 a	
    suitable	 metal	drain	pan	should	 be	installed	 under	the	water	 heater. 	
    Metal	 Drain	pans	are	available	 at	your	 local	 hardware	 store.	Such	a	
    metal	 drain	pan	must	 have	 a	minimum	 length	and	width	 of	at	least 	
    2”	 (51	 mm)	 greater	 than	water	 heater	 dimensions	 and	must	 be	piped 	
    to	an	adequate	drain.	 The	pan	must	not	restrict	combustion	air	flow. 		
    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 .
    INSTALLATIONS IN AREAS WHERE FLAMMABLE LIQUIDS 
    (VAPORS)	ARE	LIKELY 	TO	 BE	PRESENT 	OR	 STORED	 (GARAGES, 	
    STORAGE	 AND	UTILITY 	AREAS,	 ETC.):	Flammable	 liquids	(such	as	
    gasoline,	 solvents,	propane	[LP	or	 butane,	 etc.]	and	other	 substances 	
    such	 as	adhesives, 	etc.)	 emit	flammable	 vapors	which	can	be	ignited	 by	
    a	 gas	 water	 heater’s	 pilot	light	or	main	 burner.		 The	resulting	 flashback 	
    and	 fire	can	 cause	 death	or	serious	 burns	to	anyone	 in	the	 area,	 as	well 	
    as	 property	 damage.	 If	installation	 in	such	 areas	 is	your	 only	option,	 then	
    installation 	must	 be	accomplished	 in	a	way	 that	the	pilot	 flame 	and 	main 	
    burner	 flame	are	elevated	 from	floor	at	least	 18	inches.	 While	this	may 	
    reduce	 chances	 of	flammable	 vapors,	from	a	floor	 spill	being	 ignited, 	
    gasoline	 and	other	 flammable	 substances	 should	never	be	stored	 or	 
    						
    							8
    used	in	the	 same	 room	or	area	 containing	 a	gas	 water	 heater	 or	other 	
    open	 flame	 or	spark	 producing	 appliance.	 NOTE:	Flammable	 vapors	may	
    be	 drawn	 by	air	 currents	 from	other	 areas	 of	the	 structure	 to	the	 appliance.
    Also,	 the	water	 heater	 must	be	located	 and/or	protected	 so	it	is	 not 	
    subject	to	physical	damage	by	a	moving	vehicle.
    This 	water 	heater 	must 	not 	be	 installed	 directly	on	 carpeting. 		Carpeting 	
    must	 be	protected	 by	metal	 or	wood	 panel	 beneath	 the	water	 heater 	
    extending	 beyond	the	full	width	 and	depth	 of	the	 water	 heater	 by	at	least 	
    3”		 (76.2	 mm)	in	any	 direction,	 or	if	the	 water	 heater	 is	installed	 in	an 	
    alcove	 or	closet,	 the	entire	 floor	must	 be	covered	 by	the	 panel.		 Failure	
    to	heed	this	warning	may	result	in	a	fire	hazard.
    HIGH ALTITUDE
    Water	 heaters	 covered 	in	 this	 manual 	have 	been	 tested 	and 	approved 	
    for	 installation	 at	elevations	 up	to	7,700	 feet	(2,347	 m)	above	 sea	
    level.	 For	installation	 above	7,700	feet	(2,347	 m),	the	water	 heater’s 	
    Btu	 input	 should	 be	reduced	 at	the	 rate	 of	4	percent	 for	each	 1,000 	
    feet 	(305	 m)	above	 sea	level	 which	 requires	 replacement 	of 	the	 burner 	
    orifice	 in	accordance	 with	the	National	 Fuel	Gas	Code	 ANSI	Z223.1/
    NFPA	 54	or	the	 Natural	 Gas	and	Propane	 Installation	 Code	CAN/
    CSA	B149.1.	Contact	your	local	gas	supplier	for	further	information.
    Failure	 to	replace 	the	 standard	 orifice	with	the	proper	 high	altitude	
    orifice	 when	installed	 at	elevations	 above	7,700	feet	(2,347	 m)	
    could	 result	in	 improper 	and	 inefficient 	operation	 of	the	 water 	heater, 	
    producing	 carbon	monoxide	 gas	in	excess	 of	the	 safe	 limits.	 This	
    could	 result	 in	serious	 injury	or	death.	 Contact	 your	local	 gas	supplier 	
    for	any	specific	changes	that	may	be	required	in	your	area.
    CLEARANCES
    Minimum	 clearances	 between	the	water	 heater	 and	combustible 	
    construction	 are	0	inch	 at	the	 sides	 and	rear,	 4”	(102	 mm)	 for	BCN3100 	
    and	 5”	(127	 mm)	 for	BCN375	 at	the	 front,	 and	6”	(153	 mm)	 from	the	
    vent	pipe.		Clearance	from	the	top	of	the	jacket	is	12”	(305	mm).
    FIGURE 2.
    A 	gas	 water	 heater	 cannot	 operate	properly	 without	the	correct 	
    amount	 of	air	 for	 combustion.	 Do	not	 install	 in	a	confined	 area	
    such	 as	a	closet,	 unless	you	provide	 air	as	shown	 in	the	 Facts	 to	
    Consider	 About	The	Location	 section.	Never	obstruct	 the	flow	 of	
    ventilation	 air.	If	you	 have	 any	doubts	 or	questions	 at	all,	 call	 your	
    gas	 supplier.	 Failure	to	provide	 the	proper	 amount	 of	combustion	
    air	 can	 result	 in	a	fire	 or	explosion	 and	cause	 death,	 serious	 bodily	
    injury,	or	property	damage.
    FIGURE 3.
    If 	this 	water 	heater 	will 	be 	used 	in 	beauty 	shops, 	barber 	shops, 	
    cleaning 	establishments, 	or 	self-service 	laundries 	with 	dry 	
    cleaning	 equipment,	 it	is	 imperative	 that	the	water	 heater	 or	
    water	 heaters	 be	installed	 so	that	 combustion	 and	ventilation 	
    air	be	taken	from	outside	these	areas. 		
    Propellants	 of	aerosol	 sprays	and	volatile	 compounds, 	(cleaners, 	
    chlorine	 based	chemicals,	 refrigerants,	 etc.)	in	addition	 to	being 	
    highly	 flammable	 in	many	 cases,	 will	also	 change	 to	corrosive 	
    hydrochloric 	acid	when 	exposed 	to	the 	combustion 	products	of	
    t h e 	wate r 	h e ate r. 	T h e	r e s u l t s 	c a n	b e	h a z a r d o u s , 	a n d	a l s o 	c au s e 	
    product	failure. 
    						
    							9
    INSULATION BLANKETS
    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	Installation 	
    Considerations	 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	top	of	the	water	heater,	as 	
    this	will	interfere	with	safe	operation	of	the	draft	hood.
    •  DO NOT 	cover	the	thermostat	or	the	Temperature-
    Pressure	Relief	Valve.
    •  DO NOT 	allow	the	insulation	to	come	within	2	inches	(5 	
    cm)	of	the	floor	to	prevent	blockage	of	combustion	air	flow 	
    to	the	burner.
    •  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	the 	
    combustion	air	flow.
    HARD WATER
    W h e r e 	h a r d	w a t e r 	c o n d i t i o n s 	e x i s t ,	w a t e r 	s o f t e n i n g 	o r	t h e 	t h r e s h o l d 	
    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 	below	for	electric al 	
    hookup	 information.	 Install	in	accordance	 with	the	current 	
    edition	 of	the	 National	 Electrical	 Code,	NFPA	70	or	the	
    Canadian	Electrical	Code,	CSA	C22.1.
    All	 bronze	 or	stainless	 steel	circulating	 pumps	are	recommended 	
    for	used	with	commercial	water	heaters.
    Some 	circulating 	pumps 	are 	manufactured 	with 	sealed 	bearings 	
    and 	do	not 	require 	further	lubrication. 	Some	circulating 	pumps	
    must	 be	periodically	 oiled.	Refer	 to	the	 pump	 manufacturer’s 	
    instructions	for	lubrication	requirements.
    CIRCULA TING PUMP WIRING DIAGRAMSTORAGE  TANK OR BUILDING RECIRCULA TION
    FIELD SUPPLIED TEMPERATURE CONTROL
    INST ALLED IN  THE STORAGE  TANK
    OR CIRCULA TING LOOP RETURN LINE
    CIRC
    PUMP
    MOT OR
    L1 HOT
    L2 NEUTRAL 120 VA
    C
    POWER
    NOTE: USE SEP ARATE 120 V AC POWER
    SUPPL Y FOR PUMP  CIRCUIT. DO NOT
    SHARE POWER WITH  WATER HEAT ER AS THIS
    MA Y CAUSE ELECTRICAL  LINE NOISE AND
    LEAD  TO ERRA TIC CONTROL SYSTEM
    OPERA TION. 
    FIGURE 4.
    CIRCULA TING PUMP WIRING DIAGRAMDISHWASHER LOOP  WITH TOGGLE SWITC H
    FIELD SUPPLIED  TEMPERATURE
    CONTROL  INSTALLED IN  THE
    CIRCULA TING LOOP  RETURN LINE
    DISHW
    ASHER
    T OGGLE
    SWITCH
    CIRC
    PUMP
    MOT OR
    L1 HOT
    L2 NEUTRAL 120 VA
    C
    POWER
    NOTE: USE SEP ARATE 120 V AC POWER
    SUPPL Y FOR PUMP  CIRCUIT. DO NOT
    SHARE POWER WITH  WATER HEAT ER AS 
    THIS MA Y CAUSE ELECTRICAL  LINE NOISE 
    AND LEAD  TO ERRA TIC CONTROL SYSTEM
    OPERA TION. 
    FIGURE 5. 
    						
    							10
    GAS SUPPLY SYSTEMS
    Low	pressure	 building	gas	supply	 systems	 are	defined	 as	those 	
    systems		 that		cannot		 under		any		circumstances		 exceed		14”	W.C. 	
    (1/2	 PSI	Gauge).	 These	systems	 do	not	 require	 pressure	 regulation. 		
    Measurements	 should	be	taken	 to	insure	 that	gas	pressures	 are	stable 	
    and	 fall	within	 the	requirements 	stated	 on	the	 water	 heater 	rating	 plate.	
    readings	 should	be	taken	 with	all	gas	 burning	 equipment	 off	(static 	
    pressure)	 and	with	 all	gas	 burning	 equipment	 running	at	maximum	 rate	
    (dynamic	 pressure).	 The	gas	supply	 pressure	 must	be	stable	 within	1.5”	
    W.C.	 from	static	 to	dynamic	 pressure	 to	provide	 good	performance. 			
    Pressure	 drops	that	exceed	 1.5”	W.C.	 may	cause	 rough	starting,	 noisy	
    combustion	 or	nuisance	 outages.		 Increases	 or	spikes	 in	static	 pressure 	
    during	 off	cycles	 may	cause	 failure	 to	ignite	 or	in	severe	 cases	damage 	
    to	 appliance	 gas	valves.	 If	your	 low	pressure	 system		does		not	meet 		
    these		requirements,		the		installer		is	responsible	for	the	corrections.
    High		 Pressure		 building		supply		systems		 use		pressures		 that	exceed 	
    14”	 W.C.	 (1/2	PSI	Gauge).	 These	systems	 must	use	field	 supplied 	
    regulators	 to	lower	 the	gas	 pressure	 to	less	 than	 14”	W.C.	 (1/2	PSI	
    Gauge).	 Appliances	 require	gas	regulators	 that	are	properly	 sized	for	the 	
    water	 heater	 input	and	deliver	 the	rating	 plate	specified	 pressures.		 Gas	
    supply	 systems	 where	pressure	 exceeds	5	PSI	 often	 require	 multiple 	
    regulators	 to	achieve	 desired	pressures.	 Systems	in	excess	 of	5	PSI 	
    building	 pressure	 should	be	designed	 by	gas	 delivery	 professionals 	
    for	 best 	performance. 	Water	 heaters	 connected	 to	gas	 supply	 systems 	
    that	 exceed	 14”	W.C.	 (1/2	PSI	Gauge)	 at	any	 time	 must	 be	equipped 	
    with	a	gas	supply	regulator.
    GAS PRESSURE REQUIREMENTS                                 
    BCN3100	 natural	gas	model	 requires	 a	minimum	 gas	supply	 pressure 	
    of	 5”	 w.c.	 (1.25	 kPa);	 BCN375	 natural	gas	model	 requires	 a	minimum 	
    gas 	supply	 pressure	 of	6” 	w.c. 	(1.49	 kPa).	The	 minimum 	supply 	
    pressure	 is	measured	 while	gas	is	flowing	 (dynamic	 pressure).	 The	
    supply		 pressure		 (dynamic)		 should		never		fall		below		 the	specified 	
    minimum	 supply	pressure.	 The	supply	 pressure	 should	be	measured 	
    with	 all	gas 	fired	 appliances 	connected	 to	the	 common	 main	firing	at	full 	
    capacity.	 If	the	 supply	 pressure	 drops	more	than	1.5”	W.C.	 (0.37	 kPa)	
    as	 gas	 begins	 to	flow	 to	the	 water	 heater	 then	the	supply	 gas	system 	
    including	 the	gas	 line	and/or	 the	gas	 regulator	 may	be	restricted	 or	
    undersized.	 See	Supply	 Gas	regulator	 section	and	Gas	 Piping	 section 	
    of	 this	 manual.	 The	gas	valve	 on	all	models	 has	a	maximum	 gas	supply 	
    pressure	 limit	of	14”	 W.C.	 (3.48	 kPa)	The	maximum	 supply	pressure 	
    is	measured	while	gas	is	not	flowing	(static	pressure).
    SUPPLY GAS REGULATOR
    The		 maximum		 allowable		gas		supply		 pressure		 for		this		 water	 heater 	
    is	 14.0	 inches	 W.C.	(3.48	 kPa).	 Install	 a	positive	 lock-up	gas	pressure 	
    regulator	 in	the	 gas	 supply	 line	if	inlet	 gas	pressure	 can	exceed	 14.0	
    inches	 W.C.	(3.48	 kPa)	at	any	 time.	 regulators	 must	be	sized/used 	
    according	to	manufacturer’s	specifications.
    If	a	positive	lock-up	regulator	is	required	follow	these	instructions:
    1.	 Positive	 lock-up	gas	pressure	 regulators	 must	be	rated	 at	or	 above  
    	 the	input	Btu/hr	rating	of	the	water	heater	they	supply.
    2.	 Positive	 lock-up	gas	pressure	 regulator(s)	 should	be	installed	 no 
    	 closer	 than	3	feet	 (1	meter)	 and	no	farther	 than	8	feet	 (2.4	 meters)  
    	 of	equivalent	length	from	the	water	heater’s	inlet	gas	connection.
    3.	 After	 installing	 the	positive 	lock-up 	gas	 pressure 	regulator(s)	 an	initial  
    	 nominal	 supply	pressure	 setting	of	7.0”	 W.C.	 while	 the		water		 heater  
    	 is	 	 operating	 	 is	 	recommended	 	 and	 	will	generally	 provide	good 
    	 water	 heater	operation.	 Some	additional	 adjustment		 maybe	required  
    	 later	to	maintain	a	steady	gas	supply	pressure.
    4.	 When	 installing	multiple	water	heaters	 in	the	 same	 gas	supply  
    	 system	 it	is	 recommended	 that	individual	 positive	lock-up	gas 
    	 pressure	regulators	be	installed	at	each	unit.
    MIXING VALVES
    Wa ter 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.
    Temperature limiting devices such as
    mixing valves must be installed when 
    required by codes and to ensure safe 
    temperatures at fixtures.
    Water	 heated	 to	a	temperature	 which	will	satisfy	 clothes	 washing,	 dish	
    washing,	 and	other	 sanitizing	 needs	can	scald	 and	cause	 permanent	
    injury	 upon	contact.	 Short	repeated 	heating	 cycles	caused	 by	small	
    hot	 water	 uses	can	cause	 temperatures	 at	the	 point	 of	use	 to	exceed	
    the	water	heater’s	temperature	setting	by	up	to	20°F	(11°C).
    Some	 people	 are	more	 likely	to	be	 permanently	 injured	by	hot	 water 	
    than	 others.	 These	include	 the	elderly,	 children,	 the	infirm	 and	the	
    physically/mentally	 disabled.	Table	 2	shows	 the	approximate	 time-
    to-burn	 relationship	 for	normal	 adult	skin.	If	anyone	 using	hot	water 	
    provided	 by	the	 water	 heater	 being	installed	 fits	into	 one	 of	these 	
    groups	 or	if	there	 is	a	local	 code	 or	state	 law	requiring	 a	certain	 water	
    temperature	 at	the	 point 	of 	use, 	then	 special	 precautions 	must 	be	 taken.
    In	 addition	 to	using	 the	lowest	 possible	 temperature	 setting	that	
    satisfies	 demand	 of	the	 application	 a	Mixing	 Valve	should	 be	installed 	
    at	 the	 water	 heater	 or	at	hot	 water	 taps	to	further	 reduce	 system	 water	
    temperature.	See	Figure	6.
    Mixing	 valves	are	available	 at	plumbing	 supply	stores.	 Consult	
    a	 Qualified	 Installer	or	Service	 Technician.	 Follow	mixing	valve	
    manufacturer’s	instructions	for	installation	of	the	valves.
    TABLE 2. 
    Water 
    Temperature	°F 	
    Time	for	
    1st	Degree	Burn
    (Less	Severe	Burns) Time	for	Permanent	Burns
    2nd	&	3rd	Degree
    (Most	Severe	Burns)
    11 0
    (normal	shower	temp.)
    11 6 (pain	threshold)
    11 6 35	minutes 45	minutes
    122 1	minute 5	minutes
    131 5	seconds 25	seconds
    140 2	seconds 5	seconds
    149 1	second 2	seconds
    154 instantaneous 1	second
    (U.S.	Government	Memorandum,	C.P.S.C.,	Peter	L.	 Armstrong,	Sept.	15,1978)
    HOT WATEROUTLET
    TO TA NK
    INLET
    CHECK
    VA LVE MIXING
    VA LVE
    COLD
    WA TER
    INLET TEMPERED WA
    TER
    OUTLET
    12”  TO 15”
    (30-38 cm)
    CHECK VA LVE
    FIGURE 6.
    INSTALLATION REQUIREMENTS 
    						
    All American Water Heater manuals Comments (0)

    Related Manuals for American Water Heater 98 Gallon 80 Thermal Efficiency UltraLow NOx Heavy Duty Commercial Gas Water Heater User Manual