Maximum Equivalent Pipe Length In 15Mm Copper; Maximum Equivalent Pipe Length In Plastic Pipe - gledhill BoilerMate A-Class OV SOL Series Design, Installation & Servicing Instructions

The preferred solution where
space will allow
Table 1: Maximum equivalent pipe length in 15mm copper
Inlet pressure Maximum equivalent length of pipe (m)
(bar)
@ 9 l/m
2.0 25
2.5 75
3.0 150
Table 2: Maximum equivalent pipe length in plastic pipe
Inlet pressure Maximum equivalent length of pipe (m)
(bar)
@ 9 l/m
2.0 1.5
2.5 3.0
3.0 4.5
Pressure limiting valve NOT REQUIRED
at pressures below 5 bar unless any
system components have a lower
maximum working pressure
Mains
supply
Double check
valve NOT REQUIRED
unless supply pipe
services more than
one dwelling
An optional location where
cupboard space is tight
@ 12 l/m @ 18 l/m
10
30
60
@ 12 l/m @ 18 l/m
15mm : 10 15mm : 4.5
22mm : 40
15mm : 20 15mm : 9.0
22mm : 80.0
15mm : 30 15mm 13.5
22mm : 120
See Note 1
Scale
inhibitor
DW
NOT REQUIRED
WM
Kitchen sink
Kitchen
Check valve
Bath Toilet
NOT REQUIRED
cistern
unless chemical
water treatment
Bathroom
is fitted
Page 43
APPENDIX
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.
The size of the distribution pipes supplying
the manifold should be calculated using
the method set out in BS 6700. A typical
diagrammatic arrangement of a system using
Manifold Type 1 is shown below.
This is only meant to show the principles
involved and the actual connection of fittings to
the manifold will need to suit the arrangements
shown on page 42.
5
Note: If it is proposed to fit chemical water
15
treatment such as a water softener this should
30
be fitted in this location and the cold water
branch in the sink should be branched off the
cold water main prior to the treatment device
instead of the cold water manifold.
Any other isolating/control valves and backflow
protection devices should be provided as
n e ce s s a r y to co m p l y w i t h t h e Wate r
Regulations.
Airing
cupboard
Thermal
Store
Hand
basin
Toilet Cloak room
Hand
cistern
basin
En-Suite
Toilet
Hand
Shower
cistern
basin