11
STZSkW ed 12/07 ZEUS Superior kW
Technical Documentation
Technical Documentation
Secondary circuit (domestic water circuit).
DHW circuit is activated every time it is necessary to adjust
the temperature of water in the storage tank (2) to desired
temperature measured by the DHW NTC probe (9).
Such procedure is due to DHW being drawn from a tap or to
com pensate for heat loss in the water heater itself.
Operation.
Following a request for DHW, the integrated P.C.B. activates
the boiler pump (7) and enables the electric 3-way valve mo-
tor (8).
e valve then shifts to DHW position (see electric 3-way
valve operation paragraph), the system return pipe (R) closes
and at the same time the way toward the storage tank coil
opens up (4).
e above arrangement prevents circulation within the central
heating circuit and allows for circulation within the coil (4).
e coil surface allow for absorbing of heat in the primary
circuit by the domestic cold water.
erefore, during this phase, central heating function is halted
and DHW production is given priority.
To Next Page
Loading...
