A.O. Smith TWI 35-200, Installation, User And Service Manual

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Refer to C13/C33 parallel systems (see 8.7.2) for the A.O. Smith part numbers. The same
parts can be used for the C43, C53 and C63 parallel systems.
Use the "adapter box concentric to parallel - water heater side" (part number 0312209) for
C63 parallel systems.
8.8 Electrical connections
Warning
Leave the water heater electrically isolated until you are ready to commission it.
8.8.1 Preparation
Remove the cover of the water heater to make the electrical section and the terminal block
visible:
1.
Use a screw driver to remove the screws at the right side cover (1).
2. Hinge the cover towards the front.
3. Take the cover from the water heater.
Fig. Remove the covers
The mains power and optional electrical connections have to be connected to the terminal
block of the controller, refer to Structure of the water heater (see 7.1).
Fig. Terminal block
2
3
1
1. Grommet
2. Electrical connection
3. Connection external ON mode switch
w
48 Installation, Maintenance and Service part