Operating instructions

161
Connection and wiring diagrams
Main PCB 230V~ (cont.)
sÖ Switching output
or
Primary pump, cylinder storage
system
or
Circulation pump, flue
gas/water heat exchanger
sA Cylinder primary pump
sL Shunt or boiler circuit pump
(on site)
fÖ Power supply, 50Hz
fA Oil/gas burner, connection
to DIN4791
gÖ Central fault message (on site)
gS Butterfly valve
or
Constant return
temperature control
or
Mixing valve, cylinder storage
system
lÖ Burner stage 2/mod.
aBÖ External connections
a External safety equipment
(remove jumper
when connecting safety
equipment)
b External controlled
shutdown
(remove jumper when
connecting
these devices)
c External burner start
(stage 1)
aBA Safety chain 230V
aBH Power supply for accessories
F1 Fuse for electronics, pumps
and accessories (via
plugaBH)
F2 Fuse for burner
F6 High limit safety
cut−out"E" 120ºC
(100 or 110ºC)
F7 Control thermostat"R"
95ºC
(100ºC, 110ºC)
K1−K10 Relays
S1 ON/OFF switch"8"
S2 TEST key
5862730GB