4
LIMITATIONS
The cylinder should not be used in association with
any of the following:
• Solid fuel boilers or any other boiler in which the
energy input is not under effective thermostatic
control, unless additional and appropriate safety
measures are installed.
• Ascending spray type bidets or any other class
1 back syphonage risk requiring that a type A air
gap be employed.
• Steam heating plants unless additional and
appropriate safety devices are installed.
• Situations where maintenance is likely to be
neglected or safety devices tampered with.
• Water supplies that have either inadequate
pressure or where the supply may be
intermittent.
• Situations where it is not possible to safely pipe
away any discharge from the safety valves.
• In areas where the water consistently contains a
high proportion of solids, e.g. suspended matter
that could block the strainer, unless adequate
ltration can be ensured.
• In areas where the water supply contains
chloride levels that exceed 250mg/l.
OPERATIONAL SUMMARY
Maximum mains pressure 1.6MPa (16 bar)
Operating pressure 0.35MPa (3.5 bar)
Maximum design pressure 0.6MPa (6 bar)
Expansion vessel charge pressure 0.35MPa (3.5 bar)
Expansion relief valve setting 0.6MPa (6 bar)
T&P relief valve setting 90-95°C/1.0MPa (10 bar)
Maximum primary circuit pressure 1.0MPa (10 bar)
(indirect only)
Pressure drop (Primary coil) 0.02MPa (0.2 bar)
Storage capacity see Table 1
Weight when full see Table 1
Indirect Models in conformance with BS EN 12897:2006
