Technical Service Bulletin:
Polypropylene Heating Canister Replacement
Models:
Bosch Tronic 5000C/6000C (WH27 Model Only) Electric Tankless Water Heater
Data subject to change without notice | Printed in the USA | BTC 722002312 A | 08.2021
Bosch Thermotechnology Corp.
Please read this entire document prior to proceeding with any work.
WARNING:
This bulletin is intended to provide technical guidance
to a professional who is qualifi ed to work on 240V
electrical equipment. If you are not qualifi ed to work on
such equipment, please obtain the services of such a
professional.
DANGER: HAZARDOUS VOLTAGE
The electrical supply to the water heater
MUST
be shutoff
and isolated prior to commencing work!
NOTICE: PROPERTY DAMAGE
The water supply to the water heater must be shut off and
residual water drained prior to commencing work.
These directions assume that the product is installed in a location that
provides the installer with suffi cient access to work. If that is not the case,
it may be necessary to uninstall the water heater completely prior to
commencing work.
Part Numbers
Description
Part Number
Left Heating Canister Assembly
7738007199
Right Heating Canister Assembly
7738007198
Table 1
Replacing The Right-Hand Polypropylene Canister
1.
Remove the two Phillips screws that secure the brass outlet water connector
to the water heater’s chassis (Fig.1).
Figure 1
2.
Unscrew and remove the brass outlet water connector from the left black
polypropylene canister’s outlet pipe (Fig.2).
Figure 2
3.
Remove the two Phillips screws and washers that secure the brass inlet water
connector to the water heater’s chassis (Fig.3).
