Maintenance; Removing The Cover - Bosch TRONIC 4000 C Installation Manual

11 Maintenance

WARNING: PERSONAL INJURY, PROPERTY DAMAGE
 Do not attempt to repair this water heater yourself. Call a
qualified service technician for assistance. Always turn off
the power supply to the heater prior to servicing or draining
the heater. Failure to do so could result in property damage,
severe personal injury, or death.
WARNING: ELECTRICAL HAZARD
 For all of these operations, the power must be turned off at
the circuit breaker and the front cover removed.
F or most of these maintenance operations, the water will have to be
drained from the heater.

11.1 Removing the Cover

1. Remove 2 screws located on the bottom of the cover and remove.
Figure 14
NOTICE: PRODUCT DAMAGE!
 BEFORE PROCEEDING TO THE NEXT STEP, it is important
to know there is a wiring harness connected to the
backside of the front cover. This must be disconnected to
fully remove the cover. DO NOT pull cover out and away
completely without disconnecting wiring first or damage
may occur.
2. Pull bottom of cover forward and swing out (pos.1). Lift away from tabs on
the top of the back cover (pos.2). Do not fully remove cover.
Bosch Tronic TR4000C Electric Tankless Water Heaters- BTC 722203301 A (08.2022)
Figure 15
3. Disconnect wiring harness connected to the inside of the front cover.
Figure 16
4. Remove cover completely.
Installation Manual
2
1
| 21