T-KD20 Instantaneous Water Heater 
Installation Manual and Owner’s Guide 
 
 
 
 
 
 
 
 
 
 
 
 
Flash Water Heater 
Model T-KD20 
Suitable for potable water heating and space heating 
Indoor Installation Only 
 
FEATURING 
 
•  ENDLESS HOT WATER 
•  ON DEMAND 
•  COMPACT, SPACE SAVING 
•  ENERGY CONSERVING 
•  COMPUTER CONTROLS 
•  COMPUTERIZED SAFETY 
•  NO PILOT LIGHT 
 
Takagi Industrial Co. USA Inc. 
6 Goddard 
Irvine, CA 92618 
Toll Free (888) 882-5244 
www.takagi-usa.com 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FOR YOUR SAFETY - This product 
must be installed and serviced by a 
qualified professional service technician 
or licensed person, in water heater 
installation. Operation creates carbon 
monoxide gas and flue gases, which 
can cause serious injury or death. 
Improper installation and/or operation, 
or installation by an unqualified person, 
will void 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 
flammable vapors or liquids in the 
vicinity of this or any other gas 
appliance.
 
 
•  WHAT TO DO IF YOU SMELL GAS
 
•  Do not use any appliance. 
• 
Do not touch any electrical 
switch
, do not use any phone 
in your building. 
 
• 
Immediately contact your gas 
supplier from another 
location. Follow the gas 
supplier’s instructions.
 
• 
If you cannot reach your gas 
supplier, call the fire 
department.
 
 
•  Installation and service must be 
performed by a qualified installer, 
service agency or the gas supplier.