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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
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