American Water Heater Commercial Gas NonDampered Water Heater CG3275T75 CG32100T77 User Manual

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Instruction Manual
PRINTED 0812 197659-002
Keep thIs Manual In the pocKet on heater for future reference 
whenever MaIntenance adjustMent or servIce Is requIred.
 coMMercIal  Gas water heaters
• for Your safety •
AN ODORANT IS ADDED TO THE GAS USED 
BY THIS WATER HEATER.
InstallatIon - operatIon - servIce - MaIntenance
PlAcE  THESE INSTRUcTIONS  ADjAcENT TO HEATER  AND NOTIfY  OWNER TO kEEP fOR fUTURE REfERENcE.
Read and understand this instruction
manual and the safety messages
herein before...

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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...

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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...

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General safetY InforMatIon 

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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
•...

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rouGh In dIMensIons
table 1. dIMensIons and recoverY ratInGs
dIMensIons
Model unitsab cdefG hjK l M
75
Natural & lP Inches
cM 61	1/8
155.25 58	1/2
148.6 29	11/16
75.4 26	1/2
67.3 15	3/16
38.6 4
10.2 14	1/2
39.4 16
40.6 1	1/4
3.2 1
NPT 1/2
NPT 11	15/16
30.3
100
Natural & lP Inches
cM 68	5/8
174.3 66	1/2
168.9 30	15/16
78.59 27	3/4
70.5 15	3/16
38.6 4
10.2 15	3/4
40.0 16
40.6 1	1/4
3.2 1	1/4
NPT 1/2
NPT 11	15/16
30.3
recover Y ratInGs
Model Inputapprox. 
Gal. 
cap. approx. 
liter cap. t
emp.  
rise c°
17...

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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...

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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...

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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...

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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...