1 
FOR YOUR SAFETY - READ BEFORE OPERATING 
 
Thank you for purchasing this water heater. Properly installed and maintained, 
it should give you years of trouble free service. Read this installation manual 
before system install to application whether with or without experience with 
Takagi Tankless Gas water heather. 
 
Do not copy this installation manual without consent from Takagi 
Industrial Co. USA Inc. Copy Right 2002, Takagi Industrial Co. USA Inc. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FOR YOUR SAFETY - This product must 
be installed and serviced by a professional 
service trained technician. Improper 
installation and/or operation could create 
carbon monoxide gas and flue gases, which 
could cause serious injury or death. Improper 
installation and/or operation will void the 
warranty.
 
 
WARNING:
  If the information in this 
manual 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 
flammables, vapors and liquids in the 
vicinity of this or any other appliance.
 
 
•  WHAT TO DO IF YOU SMELL GAS 
 
•  Do not try light any appliance. 
• 
Do not touch any electrical switch, 
also 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.
 
 
•  Only a Licensed contractor or plumber, 
trained technician, certified installer and 
service agency should perform installation 
and/or service this unit otherwise warranty 
will void from manufacture.
 
WARNING: To install this unit correctly, you 
must follow the procedures listed in this 
manual. Failure to do so will void any and all 
warranties offered by Takagi Industrial Co. 
USA, Inc. 
 
Do not make any changes to the water 
heater, or to its gas controls, gas orifices, 
wiring or draft. Any modifications may void 
the warranty. If the unit must be modified 
because of special conditions or 
circumstances, consult the manufacture or 
factory representative before making any 
changes.