Description - Joannes EPOCA 25-29 NS Installation And Maintenance Manual

DESCRIPTION

EPOCA 25 - 29 NS
Perfectly air-tight with respect to its surroundings, this unit is suitable for heating water to temperatures below
boiling point at atmospheric pressure. Fully automatic, the EPOCA NS boiler is governed by an electronic
microprocessor-operated control box.
Continuous power modulation is effected both on the heating circuit and the hot water circuit, by means of an
electronic board controlling fan r.p.m.
Combustion analysis (to be measured at the flue base on the appropriate points) allows adjustment of gas
delivery so that the right air/gas mix is always obtained. Each variation in fan r.p.m. (and the resulting air-
flow) corresponds to a variation in the gas delivery rate.
This operation ensures a constant air-gas ratio whatever the flame intensity, thus guaranteeing maximum
combustion efficiency and hygiene under all working conditions.
The electronic board also provides:
- 3-way valve and circulation pump efficiency test; this prevents the lock-out that might otherwise occur
when the boiler remains idle for a prolonged period (the valve and pump are operated for a set time every
24 hours).
- Anti-freeze device:
- Board memory:
- Temperature-adjustable operation with external temperature compensation function (where installed).
when the heating water temperature falls below 10°C the circulation pump comes
on. If temperature continues to fall the burner will ignite at 3°C, burning at
minimum. It will be switched off when the water is reheated to 10°C. This is why
the boiler must be left connected to the power supply even when it is not in
use.
The control box microprocessor will memorise and signal any anomalies. This
information is stored on the memory even when the power is off and can be
recalled by connecting up to a PC.
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