Filling And Draining; Introduction - State Water Heaters SCE 80-115 Installation, User And Service Manual

gis gis
4
4.1

Introduction

Legend
a pressure reduction valve
(obligatory)
b expension vessel
(obligatory)
c T&P valve
(obligatory)
d stop valve
(recommended)
e non-return valve
(obligatory)
f circulation pump
(optional)
g drain valve
h gas valve
(obligatory)
i stop valve
(obligatory)
j temperature gauge
(recommended)
k shunt pump
(optional)
l draught diverter
m hot water draw-off points
n pressure overflow valve
(obligatory)
o water reservoir
p float switch
q 3-way venting valve
(recommended)
r overflow pipe
a cold water supply
b hot water outlet
c circulation pipe
d gas supply
e flue gas outlet
Release R.1.0 Uk

Filling and draining

The following will be examined in turn in this chapter:
• Filling the appliance.
• Draining the appliance.
Reference is made in these sections to the components as illustrated in
Figure 4.1.
UNVENTED
13
VENTED
Figure 4.1 Connection diagrams
Introduction
IMD-0146
IMD-0147
43