Technical data

Technical documentation Technical documentation
STZS ed 06/03
6
ZEUS SUPERIOR
- CIRCULATOR
This operates on the primary circuit return and is
located on the brass header assembly of the electric
three ways valve.
It is connected to the monobloc and exchanger by
means of threaded connecting pipes.
The pumps used differ according to boiler output (see
head - flow graph).
The body is equipped with a threaded fitting which
on the21 and 24 versions is used for the connection of
the expansion vessel and of the automatic vent valve,
while on the 27 version is used for the directly
connection of the automatic air vent.
.
21 and 24 versions 27 version
- FLOW HEAD GRAPH
The curve that represents the relation between the
flow rate and the available head depends on system
bypass adjustment which, depending on its position,
gives the system greater or less head.
The graphs are refereed to the pump operating at top
speed with:
- A = Bypass disconnected (screw fully tightened)
- B = Standard bypass adjustment (screw tightened
by 4.5 turns with respect to fully-tightened position)
- C = Bypass open (screw fully loose)
ZEUS 21 Superior
ZEUS 24 Superior ZEUS 27 Superior
- PRIMARY HEAT EXCHANGER
This is a water-gas blade type exchanger with copper pipes
and fins at the outlet of which an NTC heating probe (5) is
located.
The size differs according to boiler heat output.
The four pipes passing through the exchanger are connected
in parallel (1) two by two, to reduce flow resistance to the
utmost and provide a greater available head.
It is connected to the pump flow and to the primary circuit
flow by means of coupling pipes (2) with O.R. seal (4).
These are secured by means of special forks (3).