Electrical Connection - Bosch TRONIC 6100 C Installation Manual

7.7 Electrical Connection

DANGER: HAZARDOUS VOLTAGE
 Failure to disconnect the power from the water heater
before attempting to install or repair it will result in property
damage, severe personal injury, or death.
WARNING: PERSONAL INJURY, PROPERTY DAMAGE
 All wiring (wire gauge) as well as circuit protection
(breakers) must comply with the National Electrical
Code (NEC) in the USA and done by a qualifi ed licensed
electrician or the local electric utility.
WARNING: ELECTRIC SHOCK HAZARD
 Be sure to ground the water heater. Failure to do so could
result in property damage, severe personal injury, or death.
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.
T his water heater must be installed in accordance with all applicable
local, state, provincial, and national electrical codes.
T he heater must be connected to dedicated circuit breakers.
1 8 - 27kW models require 3 sets of wires and ground. See Wiring
Diagrams for additional information.
Bosch Tronic 6100 C Electric Tankless Water Heaters- BTC 724001301 A (08.2022)
1. Take each wire pair and connect them to one breaker (see Wiring Diagrams).
Ensure that each breaker is connected to one black wire and one red or white
wire. Ensure the power to the unit is shut off by means of the dedicated
circuit breakers in the main electrical panel.
2. A suitable wire gauge which meets all applicable electrical codes for the
size of the breakers should be used. The correct set of power cable wires
should be run from the circuit breakers in the main electrical panel to the
water heater. Connect the power cable to the terminal block within the water
heater.
3. Each incoming circuit requires a separate ground connector.
4. DOUBLE CHECK the electrical connections to ensure their correctness as
well as the tightness and secureness of wire connections. Its important to
confi rm that the correct breaker size and wire gauge has been used and
that the unit has been connected to a ground in accordance with applicable
codes.
 Ensure that all connections are correctly made to ensure proper
operation of the unit. It is critical that the unit be wired as shown.
Mixing up one set of wires with another will result in the failure of
the unit to operate correctly even though it turns on and otherwise
appears to function properly.
5. The front cover of the unit should be replaced and reattached with two (2)
screws.
6. Ensure that all the air has been purged from the water lines before turning on
power to the unit. Kindly check STEP 3 in the plumbing installation section.
Restore power to the unit by means of the dedicated circuit breakers in the
main electrical panel.
Installation Manual
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