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American Water Heater Commercial Gas NonDampered Water Heater CG32 User Manual

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    							 100266461 
August 2015
Commercial Gas 
Water Heater
Installa
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COMPLETED INSTALLATION 
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    							Commercial Gas Water Heater Use and Care Guide • 3
SAFETY
IMPORTANT SAFETY INFORMATION
Important informa
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    							 4 • Commercial Gas Water Heater Use and Care Guide
SAFETY
IMPORTANT SAFETY INFORMATION
T
o reduce the risk of property 
damage, serious injury or death, 
read and follow the precau
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    							Commercial Gas Water Heater Use and Care Guide • 5
SAFETY
IMPORTANT SAFETY INFORMATION
•   If the water supplied to the water 
heater is pre-heated (for example, 
by a solar system) the temperature 
in the tank may be higher than the 
water heater’s temperature se
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    							 6 • Commercial Gas Water Heater Use and Care Guide
SAFETY
IMPORTANT SAFETY INFORMATION
if the T&P Relief Valve or discharge 
pipe is blocked. Do not cap or plug the 
T&P Relief Valve or discharge pipe.
Fire and Explosion Risk if Hot Water is 
Not Used for Two Weeks or More.
CAUTION! Hydrogen gas builds up 
in a hot water system when it is not 
used for a long period (two weeks or 
more). Hydrogen gas is extremely 
fl  ammable. If the hot water system 
has not been used for two weeks or 
more, open a hot water faucet for 
several minutes at the kitchen sink 
before using any electrical appliances 
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 hot 
water begins to fl  ow. Do not smoke or 
have an open fl  ame or other igni
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    							 Commercial Gas Water Heater Use and Care Guide • 7
GETTING STARTED
GETTING STARTED
1
Review all of the instruc
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    							 8 • Commercial Gas Water Heater Use and Care Guide
GETTING STARTED
GETTING STARTED
Example:
Gas Burning Appliance BTU/HR (kW) Ra
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    							GETTING STARTED
Commercial Gas Water Heater Use and Care Guide • 9
GETTING STARTED
A2:  Calculate required air volume
A water heater installed in an unconfi ned 
a
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    							 10 • Commercial Gas Water Heater Use and Care Guide
GETTING STARTED
GETTING STARTED
For example, an installa
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