13
Mexico Super CF 3/100, 3/125, 3/140 -
Installation
INST
ALLA
TION
INSTALLATION
9
WATER CONNECTION
1.
Connect the system flow and return pipework
to the boiler as appropriate. Refer to Frames
10 and 11 for guidance on system design.
Connection sizes
All water connections are RC 1 (1" BSP) but
pumped pipework must be increased to:
CF 125 only
35 mm
(1
1/4
" BSP)
CF 140 only
42 mm
(1
1/2
" BSP)
immediately after leaving the boiler.
Gravity pipework and connections must be at least:
CF 100 - CF 125
28 mm
(1" BSP)
CF 140 only
35 mm
(1
1/4
" BSP)
2.
Ensure that all valves are open. Fill and vent the system
and check for water soundness.
Notes.
a.
Isolating valves must be fitted as close to the pump as
possible.
b.
The boiler is not suitable for use with a direct hot
water cylinder.
10 MINIMUM REQUIREMENTS
Fully pumped systems
1.
Open vent and cold feed connections must
be made to the boiler flow and return
tappings according to the options shown in
Frame 7.
2.
The boiler is assumed to be the highest
point of the circulating system.
3.
The circulating pump is positioned on the
FLOW - the vertical distance, between the
pump and feed/ expansion tank, must
comply with the pump manufacturer's
minimum requirements, to avoid cavitation.
Should these conditions not apply, either
lower the pump position or raise the feed/
expansion tank above the minimum
requirements of
Caradon Plumbing
Limited.
4.
The water velocity through the boiler flow /
return pipes is assumed to be below 1 m/s
(3 ft./s.) whilst the pump flow rate is set to
provide a temperature difference of 11
o
C
(20
o
F) across the boiler flow / return, at
design input.
5.
This information is intended as a GUlDE
ONLY and cannot take into account
instantaneous changes in head caused by
the operation of motorised valves, pumps
etc.
Due allowance MUST be made if surging is
liable to occur.
If in any doubt, contact
Caradon Plumbing Limited
Summary of Contents for CF3/100
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