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APPENDIX B
An optional location where cupboard space is tight
a T
b
e l
1
:
M
a
i x
m
u
m
I
l n
t e
r p
s e
u s
e r
b (
a
) r
@
8
/ l
m
2
0 .
3 3
2
5 .
1
0 1
3
0 .
2
0 0
a T
b
e l
2
:
M
a
i x
m
u
m
I
l n
t e
r p
s e
u s
e r
b (
a
) r
@
8
/ l
m
2
0 .
0 1
m
m
2 :
2
5 .
0 1
m
m
4 :
3
0 .
0 1
m
m
6 :
Supplied By www.heating spares.co Tel. 0161 620 6677
The preferred solution where space will allow
e
q
i u
a v
e l
t n
p
p i
e
e l
n
g
h t
n i
1
5
m
m
M
a
i x
m
u
m
e
q
i u
a v
e l
t n
e l
n
h t
f o
p
p i
e
@
0 1
/ l
m
3 1
5 4
0 8
e
q
i u
a v
e l
t n
p
p i
e
e l
n
t g
s h
n i
p
a l
M
a
i x
m
u
m
e
q
i u
a v
e l
t n
e l
n
h t
f o
p
p i
@
0 1
/ l
m
0 1
m
m
1 :
3 .
0 .
5 1
m
: m
2 1
5 .
0 1
m
m
2 :
6 .
0 .
5 1
m
: m
5 2
0 .
0 1
m
m
3 :
9 .
0 .
5 1
m
m
7 3
5 .
The pressure loss through a flow regulator
at the designated flow rate is about 1.8 bar.
Therefore for the flow regulator to control the
flow rate at pre-set level,the inlet pressure must
be greater than 1.8 bar. If the inlet pressure
is lower, the flow rate will be correspondingly
less than the pre-set values.
The maximum equivalent pipe lengths from
the manifold to the terminal fittings can be
estimated from the above information and
the resistance characteristics of the pipes.
The examples presented below are for 15mm
copper pipe in table 1 and for plastic pipework
in table 2.
o c
p
p
r e
(
m
)
@
8 1
/ l
m
5
7 1
0 3
t s
c i
p
p i
e
e
(
m
)
@
8 1
/ l
m
5 1
m
m
4 :
5 .
2 2
m
: m
0 4
5 1
m
m
9 :
0 .
2 2
m
: m
0 8
0 .
5 1
m
: m
3 1
5 .
2 2
m
m
1 :
0 2
Page 40
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