Sime DEWY 30/80, Manual

Page: 97 / 112

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4.1 D.H.W. PRODUCTION
The preparation of hot water is guaranteed
by the glass storage tank unit with magne-
sium anode for the protection of the boiler
unit and inspection flange for its control and
cleaning.
The magnesium anode must be checked
annually and substituted when it is worn.
It is advisable to place a sluice gate at the
entrance of the D.H.W. tank unit which,
apart from the total closure, allows the reg-
ulation of the supply capacity.
If the boiler does not produce hot water,
make sure that the air has been released
by pressing on the manual vents after hav-
ing switched off the main switch.
4.2 GAS VALVE
The boiler, is equipped standard with the
HONEYWELL VK 8115M gas valve (fig. 20).
4 USE AND MAINTENANCE
1
2
3
4
5
Fig. 20
KEY
1
Regulation intake
2 EV1-EV2 coils
3 Pressure inlet upstream
4 Pressure inlet downstream
5 OFF-SET
CR1
CR
TA
(5)
SONDA
SANITARIO
CONNETTORE J2
COPERTURA
TA (6)
SB
(11)
SB
(12)
CIRCUITO CON VALVOLE DI ZONA
NOTA: I relé vengono impiegati solo nel caso
le valvole di zona siano prive di micro.
L
N
TA TA1
VZ R VZ1 R1
CIRCUITO CON POMPE DI ZONA
L
N
TA TA
P
R
P1 R1
KEY
TA-TA1
Zone room stat
VZ-VZ1 Zone gas valve
R-R1 Zone relay
CR-CR1 Zone microvalve or relay contact
P-P1 Zone pump
Fig. 19
COVER
CONNECTOR J2
CIRCUIT WITH ZONE VALVE
CIRCUIT WITH ZONE PUMP
NOTE: Relays are used only if the area valves have
no microswitches.
D.H.W.
SENSOR