A.O. Smith 28 30 50 60, Installation & Service Manual

Page: 13 / 96

Introduction
Release R.1.3 UK 13
gis
2 Functioning of the
appliance
2.1 Introduction
Topics covered in this chapter:
•
Functional description of the appliance ;
• The appliance’s heating cycle ;
• Protection for the appliance ;
• Safety of the installation .
2.2 Functional
description of the
appliance
Figure 2.1 shows a cut-away view of the appliance.
Legend
a
plastic top cover
b
hot water outlet
c
electrical connection block
d
ThermoControl
e
pressure switch
f
control panel
g
temperature sensor T
1
h
combustion chamber
i
anode
j
tank
k
heat exchanger
l
inspection and cleaning
opening
m
temperature sensor T
2
n
cold water inlet
o
drain valve
p
gas control
q
burner
r
fan
s
air supply hose
t
glow igniter
u
ionisation rod
v
chimney pipe
w
siphon
x
PU insulation layer
IMD-0070
Figure 2.1 Cut-away view of the appliance
k
i
a
p
c
e
u
b
o
r
x
q
h
f
d
j
n
t
v
w
s
g
l
m
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