Sime PLANET DEWY 30 BF, Installer'S Instructions

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103
IT
ES
PT
GB
This may occur upon first ignition or
after long periods of boiler lay-off when
there is air in the pipes. It may be caused
by the gas cock being closed or by one of
the valve coils having a break in the win-
ding, so that the valve cannot open.
– Ignition electrode fails to spark
In the boiler, only the gas to the burner
is seen to open. After 10 sec. the war-
ning light indicating equipment “lock-
out” lights up.
This may be due to a break in the wire of
the electrode or to the wire not properly
fastened to the electric terminal of the
control box;
– No detection of flame
The continuous spark discharge of the
electrode is noted starting from ignition
even though the burner is lit.
A f t e r 10 s e c o n d s h a v e e l a p s e d , t h e
sparks cease, the burner goes out, and
the warning light indicating equipment
“lock-out” lights up.
There could have a break in the wire of
the sensing electrode or the electrode
itself is touching earth: the electrode is
worn out and needs replacing. The con-
trol box is defective.
When there is a sudden voltage failure, the
burner shuts out immediately; when power
supply returns, the boiler will start up again
automatically.
3.4 SYSTEM AVAILABLE HEAD
The head available for the heating plant is
shown as a function of the flow in graph in
fig. 20.
3.5 FLOW SWITCH SAFETY VALVE
A flow switch safety valve intervenes,
blocking the operation of the burner if the
boiler is without water due to the formation
of an air lock in the heat exchanger or if the
circulator is not working, or because the
“Aqua Guard” filter is obstructed with impu-
rities.
NOTE: If replacing the flow switch valve,
make sure that the arrow stamped on the
valve points in the same direction as the
flow of water.
3.6 MAINS
ELECTRICITY
CONNECTION
Use a separate electricity supply to con-
nect the room stats and relative zone val-
ves.
The micro or relay contact connection is
made to TA-CR-SE (J2) connector of the cir-
cuit board after having removed the jum-
per (fig. 21).
0
390
100 800 700 600 500 400 300 200
PORTATA (l/h)
PREV
ALENZA RESIDU
A (mbar)
380
370
300
350
360
Plane
t Dewy 30/50
900
400
Fig. 20
FLOW RATE (l/h)
RESIDU
AL
HEAD
(mbar)
CR1 CR
TA
TA
Connettore J2
CIRCUITO CON POMPE DI ZONA
NOTA: Sostituire la pompa impianto della
caldaia con il tronchetto optional cod. 8094001.
Collegare il cavo della pompa impianto ad un
relè di potenza (RL).
L
N
TA1
CRL
R1
P
TA
R
P1
CR
CR1
RL
Cavo
pompa
impianto
CIRCUITO CON VALVOLE DI ZONA
L
N
TA
TA
1
VZ
R VZ
1
R
1
NOTA: I relé vengono impiegati solo
nel caso le valvole di zona siano
prive di micro.
Fig. 21
KEY
TA-TA1
Zone room stat
VZ-VZ1 Zone valve
R-R1 Zone relay
CR-CR1 Relay contact or
micro zone valve
P-P1 Zone pump
RL Power relay
CRL Power relay contact
J2 connector
Pump cable
1. CIRCUIT WITH ZONE VALVES 2. CIRCUIT WITH ZONE PUMPS
NOTE: Relays are used only if
the area valves have no
microswitches.
NOTE: Replace the heating pump with the
optional stub pipe, code 8094001. Connect
the pump cable to a power relay (RL).