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4
Filling and draining
gis
Legend
a
bexpansion vessel (mandatory)
cT&P valve (mandatory)
dstop valve (recommended)
e
fcirculation pump (optional)
gdrain valve
hgas valve (mandatory)
istop valve (mandatory)
jtemperature gauge (optional)
kcondensation drainage (mandatory)
lhot water
mpressure relief valve (mandatory)
nwater cistern
ofloat valve
p
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
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
40 | Instruction Manual BFC |