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FLOW
•
The flow rate through the FLASH T-K3-OS/SP is limited to a maximum of 7.0 GPM.
•
The temperature setting, along with the supply temperature of the water will determine the
flow rate output of the unit.
•
Please refer to the temperature vs. gallons per minute chart on p. 38 to determine the likely
flow rates based on your local ground water temperature and your desired outlet water
temperature combination.
•
Based on the United States Department of
Energy method of testing water heater output,
the T-K3-OS/SP is rated for 240 gallons per
hour (GPH) or 4.0 gallons per minute (GPM)
for Natural Gas, and 251 GPH or 4.2 GPM for
Liquid Propane, when raising the water
temperature by 77
°
F (from 58
°
F to 135
°
F).
•
Refer to the chart to the right for typical
household plumbing fixture flow rates to
determine what the FLASH T-K3-OS/SP can
do in a household application.
FREEZE PROTECTION SYSTEM
•
This unit comes equipped with heating blocks to prevent freezing which can damage the heat
exchanger.
•
For this freeze prevention system to operate, there has to be electrical power to the unit.
Damage to the heat exchanger caused by freezing temperatures due to power loss is not
covered under the warranty.
•
The freeze protection system will activate when the temperature drops below 36.5°F (2.5°C)
and is rated to protect the unit down to 5°F (-15°C) in a wind-free environment.
•
Do NOT install the water heater in an area where the water heater is subject to temperatures
(including wind chill) below 5ºF (-15ºC), as this will void the warranty and Takagi will not be
responsible for any damage to the heat exchanger as a result of freezing.
•
If you will not be using your heater for a long period of time or if the temperatures (including
the wind chill) will drop below 5ºF (-15ºC):
1.
Drain the unit of water. Refer to p. 23.
2.
Turn off your heater.
This will keep your unit from freezing and being damaged.
CAUTION:
Only pipes within the water heater are protected by the freeze protection
system. Any water pipes (hot or cold) located outside the unit will not be protected.
Properly protect and insulate these pipes from freezing.
Household Flow Rates
Appliance / Use
Flow Rate
(GPM)
Lavatory Faucet
1.0
Bath Tub
4.0
Shower
2.0
Kitchen Sink
1.5
Dishwasher
1.5
Washing Machine
2.0
Taken from UPC 1997
Summary of Contents for T-K3-OS
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