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QUICK REFERENCE GUIDE 

MODELS - TCWH180S-AS & TCWH199S-AS

CHAPTER 1 - BEFORE INSTALLATION 

 

 

CHAPTER 2 - CONSIDER INSTALLATION SITE 

                                

 

                                             

 

B. MOUNTING ON THE WALL

 

 

C. GAS PIPING 

 

D. WATER PIPING

 

12” of the bottom connections of the 

water heater

1. This water heater requires the use of direct vent type pipe as specified by American

Standard Water Heaters. DO NOT use materials that are not specified for use with
this water heater.

2. Always install water heater exhaust vent / intake pipe terminations 12 inches

above maximum expected snow accumulation levels.

4. The power supply required is 120VAC at 60Hz. Failure to provide the correct

power supply could result in electric shock or fire.

Locate  the  water  heater  in  a  site  where  leakage  from  the  water  heater  or 

connections will not result in damage to the site adjacent to the water heater. 

When such locations cannot be avoided, it is recommended that a suitable  drain  

pan,  adequately  drained,  be  installed  under  the  water heater. Install the

water heater in a location that allows for proper clearances to combustible and 

noncombustible construction. Consult the rating plate for proper clearances. 

Please refer to the installation manual before mounting the water heater.

Ensure the mounting location can support the weight of the filled water 

heater.

Drill four (4) holes with a 15/32 drill bit in the locations on the wall bracket.

Mount the wall bracket level on the wall with four (4) anchor bolts.

Align the grooves on the back of the water heater with the tongue on the 

wall mounting bracket.

Remove the four screws on the water heater front cover. Remove the 

front cover.

The gas connection fitting on the water heater is ¾” female NPT.

The supply line must be sized for the maximum output of the water heater model 

being installed. If there are additional gas appliances connected to the same supply 

line, size the supply line according to the COMBINED

total maximum BTUH draw for the appliances as if they were operating at the 

same time.

DO NOT operate the water heater until all connections have been completed 

and the heat exchanger is filled with water.

Ensure pipe material is suitable to meet local codes and standards. The pipe 

must be clean and without blemish. DO NOT apply torch heat within

Installation Clearances from Non

-

Combustibles / Combustibles

 

Recommended Service and Proper 

Operation Clearances 

Top

 

9 in. (228.6 mm)

9 in. (228.6 mm)

Back

5/8 in. (15.9 mm)

5/8 in. (15.9 mm)

Front

 

6 in. (152.4 mm)

24 in. (609.6 mm) or more (Front of 

Water heater)

 

(A combustible door or removable 

panel is acceptable front clearance.)

Right Side

3 in. (76.2 mm)

3 in. (76.2 mm)

Left Side

Bottom

 

12 in. (304.8 mm)

12 in. (304.8 

mm)

 

Minimum Clearances

WARNING

3. Check the water heater rating plate to ensure the water heater is set to 
operate on the gas supplied and that the gas supply line is sized to the Btu/h 
required for this water heater. (Rating plate shown by example only).

CHAPTER 3 - INSTALLATION

A. INCLUDED ACCESSORIES

www.americanstandardwaterheaters.com

TCWH180S-AS / TCWH199S-AS  

REV 06/16

561  New  York  Drive,  Pomona, 
California 91768

Read the Installation Manual carefully and be sure that your water heater has 

been properly assembled BEFORE reviewing these instructions. Failure to 

follow the instructions included in the Installation Manual exactly as written 

could result in fire, explosion, electrical shock, or other situation that could 
result in property damage, serious personal injury, or death. Installation and 
service must be performed by a qualified plumber, licensed gas fitter, or a 

professional technician in accordance with all local codes. Improper installation 

and/or operation by an unqualified person WILL VOID the warranty. This 

water heater must be installed in accordance with all local codes. In the 
absence of local codes, follow ANSI Z223.1 / NFPA 54 or CAN/CSA B149.1, 
Natural Gas and Propane Installation Code, as applicable.

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