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STZM@ ed 05/04 ZEUS Maior @
Technical Documentation
Technical Documentation
ZEUS Maior @
Wall-hung, room-sealed, fan-assisted boiler
with storage tank
ZEUS 21 Maior @
ZEUS 24 Maior @
General features.
ZEUS Maior @ is a wall-hung room-sealed fan-assisted boiler
(type C) with a storage tank for central heating and producing
domestic hot water.
is boiler can be also be installed in the B
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confi guration by
using the (optional) kit.
It is equipped with an AISI 316 L stainless steel coil type stor-
age tank, with a total capacity of 60 litres, and a 2-litre d.h.w.
expansion tank (standard feature).
is boiler is available with an output power of 21,000 kcal/h
(24.4 kW) and 24,000 kcal/h (27.9 kW) with an operation
performance higher than 90%.
Both versions feature electronic control of the ignition, tem-
perature and fl ame modulation.
With the new electronics used this boiler can be connected to
the Remote Control used for maximum simplicity.
e hydraulic circuit is equipped with a copper water-gas
exchanger and uses the new hydraulic power unit made in
a composite material and where we fi nd the hydraulic circuit
control devices (absolute system pressure switch, adjustable system
by-pass, etc...) besides the circulator and electric 3-way diverter
valve that, according to requirements, allow boiler water to
circulate through the heating system or through the storage
tank coil to produce domestic hot water.
Combustion air intake inside the airtight chamber and the
expulsion of gases are ensured by a fan. A diff erential fl ue
pressure switch controls correct fan operation.
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