Electrical Connections; Electrical Power Supply; Position Of The Fuses In Control Unit; Operation Instructions - Bosch Therm C 1210 ES Installation And Operating Instructions Manual

Electrical connections

5 Electrical connections
5.1

Electrical power supply

WARNING:
For safety reasons, disconnect the power supply cord to the
heater before any service or testing is performed.
WARNING:
This heater must be electrically grounded in accordance with
the most recent edition of the National Electrical Code. NFPA
70. In Canada, all electrical wiring to the heater must be in
accordance with local codes and the Canadian Electrical Code,
CSA C22.1 Part 1. Do not rely on the gas or water piping to
ground the metal parts of the heater.
The water heater requires an electrical power supply from a
120VAC / 60Hz properly rated receptacle and must be properly
grounded.
The heater is wired as shown in the wiring diagram (chapter
10, fig. 69).
Fig. 43 Connecting power supply cord
[1] Power cord length: 3ft.
Note: Outlet appliance is plugged in to should be clear from
possible water damage.
5.2

Position of the fuses in control unit

To check fuses, proceed as follows:
▶ Remove the front cover, see fig. 4, page 12.
▶ Remove the three screws from the control unit.
Fig. 44
46
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▶ Remove the six screws from the back cover of the control
unit, see fig. 45, pos. 2.
▶ Check the fuses in the printed circuit board, see fig. 45,
pos. 3.
2
Fig. 45 Fuses position
▶ After checking the fuses, reinstall all parts in reverse order.
6

Operation instructions

Fig. 46
[1] On/Off button
[2] Reset button
[3] Program Key
[4] LCD display
[5] Up button
[6] Down button
[7] Power On or stand-by LED
C 1210ES/ESC – 6 720 644 887 (2022/04)
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