Electrical Connections - A.O. Smith SGS-28 Installation, User And Service Manual

7.8
w
c
0311753_SGS_28-120_II_UKUK_V2.0 , 2017-05-03
Concentric systems
Refer to the table for the correct pipe dimensions of the C43, C53 and C63 concentric
systems.
Description
Manufacture venting material
Construction
Material flue gas outlet
Material air inlet
Diameter flue gas outlet
Diameter air inlet
Refer to C13/C33 concentric systems for the A.O. Smith part numbers. The same parts can
be used for the C43, C53 and C63 concentric systems.
Parallel and non-concentric systems
Refer to the table for the correct pipe dimensions of the C43, C53 and C63 parallel
systems.
Description
Manufacture venting material
Construction
Material flue gas outlet
Material air inlet
Diameter flue gas outlet
Diameter air inlet
Refer to C13/C33 parallel systems 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.

Electrical connections

Warning
Leave the water heater electrically isolated until you are ready to commission it.
Caution
The water heater is phase-sensitive. It is absolutely essential to connect the mains live
(L) to the live of the water heater and the mains neutral (N) to the neutral of the water
heater.
Caution
There must be no potential difference between neutral (N) and earth (A). Use an isolating
transformer (see section 7.8.3.1) in the supply circuit when there is a potential difference.
The figure shows a view of the terminal block, and the table explains the relevant
connections.
SGS 28 - 60 SGS 80 - 120
Muelink & Grol Muelink & Grol
Concentric Concentric
Thick walled aluminum Thick walled aluminum
Thin walled galvanized Thin walled galvanized
steel steel
100 mm 130 mm
150 mm 200 mm
SGS 28 - 60 SGS 80 - 120
Muelink & Grol Muelink & Grol
Parallel Parallel
Thick walled aluminum Thick walled aluminum
+0,6
100 / mm 130
-0,6
+0,6
/ mm
-0,6
65