Operation; Water Temperature Adjustment; Seasonal Operation - Bosch TRONIC 4000 C Installation Manual

Installation Manual

9 Operation

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 heating canister is dry. Failures
due to "dry-firing" ARE NOT covered by warranty.

9.1 Water Temperature Adjustment

1. Supply power to the water heater by turning on the circuit breaker.
2. Turn the temperature dial from off to low.
3. Flow only hot water at the desired outlet. Allow the water heater several
minutes to heat the water to temperature. The LED on the power selector
shows the unit is heating.
4. Use a thermometer to measure the water temperature at the hot water
outlet. Temperature can range from 90°F -170°F depending on fl ow and inlet
temperature.
5. Turn the power selector knob to choose a power level setting (low, med, high)
that provides the desired hot water temperature.
 Turn the knob clockwise to increase temperature.
 Turn the knob counterclockwise to decrease temperature.
LOW
OFF
Figure 13
The recommended power setting is medium.
WARNING: SCALD HAZARD
 Households with small children, disabled, or elderly persons
may require a lower temperature setting.
A lower setting is more economical and reduces the risk of scalding.
2 0 |
MED
HIGH
Bosch Tronic TR4000C Electric Tankless Water Heaters - BTC 722203301 A (08.2022)
Estimated Thermostat Power Setting (kW)
Wattage
(kW)
Low
3 1.1
6.5 3
8.5 3.8
10.5 5.25
13 4.5
Table 7 Model Operation Guide (by kW)

10 Seasonal Operation

Vacation/Freezing Temperatures
Drain the piping to the water heater (refer to Page 19) and leave the drain valve
open if the water heater is left idle for 30 days or longer and/or is subjected to
freezing temperatures while shut off .
Medium High
2 3.1
3.5 6.5
4.7 8.5
5.25 10.5
8.5 13