A.O. Smith 28 30 50 60 service manual Filling and draining, Installation diagrams F d c

4

Filling and draining

gis

Legend

apressure-reducing valve (mandatory)

bexpansion vessel (mandatory)

cT&P valve (mandatory)

dstop valve (recommended)

enon-return valve (mandatory)

fcirculation pump (optional)

gdrain valve

hgas valve (mandatory)

istop valve (mandatory)

jtemperature gauge (optional)

kcondensation drainage (mandatory)

lhot water draw-off points

mpressure relief valve (mandatory)

nwater cistern

ofloat valve

p3-way venting valve (recommended)

qoverflow pipe

a cold water supply

b hot water outlet

c circulation pipe

UNVENTED

b

j T

d

h

i

l

e

c	d
	f
	e
	d

c

b

a

m e a i

k g

IMD-0139

d	gas supply
e flue gas discharge and air
	supply

VENTED	p	o	a
		q
		l
b		n
T	i
		c
j
	e
d
h
		i
		c

k

Figure 4.1 Installation diagrams

a

d e f d c

g

IMD-0138

40 Instruction Manual BFC