Whirlpool T-K2 - Manual (Page 5)

The flow rate through the T-K2 is limited to a
maximum of 6.9 GPM. The temperature
setting, along with the supply temperature of
the water will determine the flow rate the unit
puts out. Consult the flow charts on the last
page of this manual to determine the possible
outlet temperature and flow rate combinations.
Based on the United States Department of
Energy method of testing water heater output,
the T-K2 is rated for 240 gallons per hour, or
4.0 GPM, at a 77
°
F rise above the inlet
temperature. Refer to the following chart of
typical household flow rates to determine what
the T-K2 can do in a household application.
Remember that for bathing, cold water will be
mixed for a comfortable temperature,
increasing the flow output rate.
Freeze Prevention
This unit comes equipped with heaters that
discourage the unit from freezing. For this
freeze prevention system to operate there has
to be electrical power to the unit.
The freeze prevention devices will not work if
the electrical power source is disconnected.
The unit has been rated for temperatures
down to 5º F (-15º C) in a wind free
environment. The wind chill factor will cause
the unit to freeze at temperatures above 5º F
(-15º C), even if the unit is installed indoors.
For indoor installation in areas where the
temperature will be well below freezing for
extended periods of time, use the thermostat
extension cable to extend the internal
thermostat to the outdoors, and install a TK-
TV03 backflow prevention kit so that cold air
will not backflow into the flue and cause the
unit to freeze. Do not install the water heater in
an area with extremely cold weather. This will
void your warranty and Takagi Industrial Co.
USA Inc. will not be responsible for any
damage that occurs.
WARNING: The pipe heaters are located on
the Flash Water Heater only. Any hot or cold
water pipes located outside of the unit will not
be protected. Properly protect and insulate
these pipes from freezing.
If the heater will not be in use for a long period
of time or if the temperatures will drop below
5º F (-15º C) with the wind chill factor, turn off
heater and drain the unit of water. This applies
to indoor and outdoor installations. This will
keep the unit from freezing and being
damaged.
Follow these instructions carefully:
1. Turn off the power supply to the Flash
Water Heater.
2. Close manual gas control valve.
3. Close manual water shut off valve.
4. Open all hot water taps in the house.
(Bathroom, kitchen, laundry room, etc.).
When the water flow has ceased, close all
hot water taps.
5. Have a bucket or pan ready to catch the
water from the unit’s drain plugs. Remove
the drain plugs to drain the water out of the
unit.
6. Let drain for 5 minutes.
7. Securely screw the drain plugs back into
place.
Follow these steps when it is again safe to use
the water heater:
1. Make sure all hot water taps are closed
and the drain plugs are securely attached.
2. Purge the water line of debris.
3. Open manual water control valve located
on the water supply line.
4. Open all the hot water taps to verify water
flows to the taps. Close hot water taps.
5. Open manual gas control valve located on
the gas supply line.
6. Turn on the power supply to the Flash
Water Heater.
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