13
Mexico Super CF 3/40 - 3/80 -
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.
Note.
When the required output exceeds 14.4 kW (49 000
Btu/h) then 28mm (1") pumped flow and return pipes
should be used, both to and from the boiler.
Gravity connections MUST be at least 28mm (1").
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 Mexico Super CF 3/40
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