American Water Heater American Water Heaters Residential Gas Water Heater Benutzerhandbuch

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This water heater should not be connected to any heating systems or 

component(s) used with a non-potable water heating appliance.

All piping components connected to this unit for space heating 

applications should be suitable for use with potable water.

Toxic chemicals, such as those used for boiler treatment should not 

be introduced into this system.
When the system requires water for space heating at temperatures 

higher than required for domestic water purposes, a mixing 

valve must be installed. Please refer to Figure 2 for suggested  

piping arrangement.

This  appliance  has  been  design  certified  as  complying  with

American National Standard/CSA Standard for water heaters  

and  is  considered  suitable  for  Water  (Potable)  Heating  and  

Space Heating.
Your water heater is equipped with inlet/outlet connections 

for  use  in  space  heating  applications  (see  Figure  2).  If  this

water heater is to be used to supply both space heating and 

potable  (drinking)  water,  the  instructions  listed  below  must

be followed:
•  Be sure to follow the manual(s) shipped with the air handler or other

type heating system.

•  This water heater is not to be used as a replacement for an existing

boiler installation.

•  Do not use with piping that has been treated with chromates, boiler

seal or other chemicals and do not add any chemicals to the water 

heater piping

•  If the space heating system requires water temperatures in excess of

120°F (49°C), a mixing valve must be installed per the manufacturer’s

instructions in the potable hot water supply to limit the risk of scald 

injury.

•  Pumps, valves, piping and fi ttings must be compatible with potable

water.

•  A  properly  installed  flow  control  valve  is  required  to  prevent

thermosiphoning. Thermosiphoning is the result of a continuous 

flow  of  water  through  the  air  handler  circuit  during  the  off  cycle.

Weeping  (blow  off)  of  the  temperature  and  pressure  relief  valve  

(T & P) or higher than normal water temperatures are the first signs

of thermosiphoning.

•  The  hot  water  line  from  the  water  heater  should  be  vertical  past

any mixing valve or supply line to the heating system to remove air 

bubbles from the system.

•  Do  not  connect  the  water  heater  to  any  system  or  components

previously used with non-potable water heating appliances when 

used to supply potable water.

Water supply systems may, because of code requirements or such 

conditions as high line pressure, among others, have installed 

devices such as pressure reducing valves, check valves, and back 

flow preventers. Devices such as these cause the water system to

be a closed system.

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 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. (See limited warranty

for complete terms and conditions).

Water 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 valves are 

available.
Read instruction manual for safe

temperature setting.

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, cleaning 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 fits into one of these groups or if there is

a local code or state law requiring a certain temperature water at the 

hot water tap, then you must take special precautions. In addition to 

using lowest possible temperature setting that satisfies your hot water

needs, a means such as a mixing valve, should be used at hot water 

taps used by these people or at the water heater, see Figure 2. Valves 

for reducing point of use temperature by mixing cold and hot water are 

also available:

 

Consult a Qualified Installer or Service Agency. Follow manufacturer’s

instructions for installation of valves. Before changing the factory setting 

on thermostat, read “Temperature Regulation” section in this manual.