Your Ideal Pro unvented cylinder is automatic in normal use, but requires routine maintenance which is normally carried out at least
annually along with the boiler service. The maintenance must be carried out by a suitably competent tradesperson who is qualied to
work on unvented cylinders. The checks/work needed are listed in the maintenance part of these Instructions.
For the control thermostat set points of the immersion heaters for direct heating of our cylinders, please refer to page 16 of this manual.
The control thermostat for indirect heat exchanger heat up of our cylinders are usually set at between 60°C - 65°C. During commissioning
the actual temperature that the cylinder reaches when the thermostat(s) operate should be tested and adjusted so that it achieves a
minimum of 60°C, in order to comply with the Legionella pasteurisation requirements.
When initially opening the taps, a small surge in ow may be experienced, which disappears as the pressure in the system stabilises.
This is quite normal with these types of systems and does not indicate a fault.
In some areas the water will initially appear cloudy, but will quickly clear when left to stand. This is nothing to be concerned about and
is due to aeration of the water.
WARNING - If water is seen owing through the tundish, this indicates a fault condition which needs action.
If the discharge is hot and continuous, turn the boiler and/or the immersion heaters o, but do not turn o the cold water to the
appliance until the discharge is cold. Note: The discharge may stop by itself as the discharge cools.
If the discharge is cold and intermittent, no immediate action is needed but this indicates a problem with the expansion vessel.
However, in both cases you must call the registered installer / a suitably qualied, competent tradesperson, advise them that
you have an unvented cylinder and request a maintenance visit.
DO NOT, at any time, tamper in any way with the safety valves or overheat thermostats/wiring.
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