Application; Space Heating - Takagi Flash Water Heater T-KD20 Installation Manual And Owner's Manual

The T-KD20 can be used for potable hot water heating applications as well as space heating
• Toxic chemicals used in boiler treatments such as alcohol, glycerol and glycol
group must not be introduced into the system when used for open loop potable
water and space heating.
• The FLASH T-KD20 can be used to supply potable water and space heating and
shall not be connected to any heating system or component(s) previously used
with non-potable water where any chemicals were added to the water heating
appliances.
• When the system requires water for space heating at temperatures higher than
required for other uses, a means such as a mixing valve shall be installed to
temper the water for those other uses in order to reduce scald hazard potential.
• Water temperature over 125 °F can cause severe burns instantly or death from
scalds.
• Chemicals such as diluted Glycol can be used for radiant floor, Hydro/fan coil air
or Baseboard heating only.
Heating application only:
Make up water
Warning: This illustration is for concept only. There are a wide variety of variations to the application
of controls and equipment presented applications. Designers must add all necessary safety and
auxiliary equipment to conform to code requirements and design practice.
For more details, contact Technical Department at (888) 882-5244
Applications
Space Heating Applications
applications.
WARNING
Basic System Drawings and Schematics
Pressure relief valve
Check valve
19
Pump
Expansion tank
Radiant, Hydro
or Baseboard