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Installation Manual
Bosch Tronic 6100 C Electric Tankless Water Heaters - BTC 724001301 A (08.2022)
9 Operation
This tankless electric water heater is designed to supply hot water instantaneously
on demand. The unit contains heating elements capable of heating water quickly for
as long as necessary.
Unlike a conventional tank storage water heater, this tankless water heater does
not store hot water. A tankless system is more effi cient because it does not waste
energy continually heating water that is idly sitting and losing heat in a storage tank.
As soon as a demand for hot water is detected the heating elements are activated.
Sensors continually monitor water fl ow rate and incoming and outgoing
temperature and transmit data to the system controller, which determines the exact
amount of power required by the heating elements to reach the set temperature.
Operating this tankless water heater is similar to using any traditional water heating
system. However, it is very important to carefully read all of the setup procedures
and operating instructions in this manual to ensure the maximum performance and
energy savings from the water heater.
NOTICE: PRODUCT DAMAGE, PROPERTY DAMAGE
The water heater must be full of water before the power is
turned on. The heating element will be damaged if energized
for even a short time while tank is dry. Failures due to “dry-
firing” ARE NOT covered by warranty.
Turning the Unit On
Press the button. The unit will power on.
Press again. The unit will turn off.
Figure 15
Setting the Outlet Water Temperature
Press the button to power on the unit.
Press or to decrease or increase the temperature, respectively.
Temperature can be set to any level from 86 - 125° F (30 - 52° C).
Setting Recommendations:
— A comfortable temperature for bathing and showering is between 105
and 110° F (41 and 43° C).
— The recommended temperature setting is 120° F (49° C), which will
deliver hot water for all household needs at a maximum water flow rate.
— A higher temperature setting is not recommended, as it can cause
serious scalding injuries to children and elderly persons.
— Higher temperatures also produce more scale buildup in water heating
devices.
If unit is not achieving set point, reduce the fl ow rate. Refer to table 5.
10 Seasonal Operation
Vacation/Freezing Temperatures
Due to the confi guration of the water heater, it is extremely diffi cult to get all of the
water out of the heater.
Follow the procedure below to best minimize the chance of freeze damage:
1. Disconnect electric supply.
2. Disconnect cold and hot water pipes from fi ttings on bottom of heater. Allow
water to drain out (have a catch basin ready).
3. Use compressed air to purge remaining water out of heating canisters.
Remember, these suggestions are only made to help minimize
the potential for freeze damage and are not to be construed as
the guaranteed method for dealing with freeze possibilities
The suggestions above are only made to help minimize the potential for
freeze damage and are not to be construed as the guaranteed method
for dealing with freeze possibilities.
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