Flow Switch Safety Valve; Smoke Stat; System Available Head; Mains Electricity Connection - Sime Planet Dewy 30 BF Manuel D'utilisation

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.
Af t er 10 seconds have elapsed, the
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 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
RL
pompa
Pump cable
impianto
J2 connector
Connettore J2
KEY
TA-TA1 Zone room stat
VZ-VZ1 Zone valve
"FOOT"
13.0
12.7
12.4
12.0
11.7
10
valve points in the same direction as the
flow of water.
3.5

SMOKE STAT

To protect the polypropylene conduit from
smoke the appliance is provided with an
exhaust thermostat (13 fig. 3).
3.6

SYSTEM AVAILABLE HEAD

The head available for the heating plant is
1. CIRCUIT WITH ZONE VALVES
Cavo
CIRCUITO CON VALVOLE DI ZONA
L
CR CR1
VZ
N
TA
NOTE: Relays are used only if
NOTA: I relé vengono impiegati solo
TA
nel caso le valvole di zona siano
the area valves have no
prive di micro.
microswitches.
R-R1 Zone relay
CR-CR1 Relay contact or
micro zone valve
400
390
380
370
360
350
300
0
100 200 300 400
0.44 1.32
2. CIRCUIT WITH ZONE PUMPS
L
TA TA
1
R VZ
R
1
1
N
NOTA: Sostituire la pompa impianto della
NOTE: Replace the heating pump with the
caldaia con il tronchetto optional cod. 8094001.
optional stub pipe, code 8094001. Connect
Collegare il cavo della pompa impianto ad un
the pump cable to a power relay (RL).
relè di potenza (RL).
P-P1 Zone pump
RL Power relay
CRL Power relay contact
500 600 700 800
FLOW RATE (l/h)
PORTATA (l/h)
2.2 3.08 3.96
(US gal/min)
shown as a function of the flow in graph in
fig. 21.
3.7 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. 22).
CIRCUITO CON POMPE DI ZONA
CRL
TA TA1
CR
R R1
P
ENG
FR
900
Fig. 21
CR1
P1
Fig. 22
33