Technical data

186
Connection and wiring diagrams – Vitotronic 100, GC1
Line voltage motherboard
sÖ Control output
sA DHW pump
sL Shunt or boiler circuit pump
fÖ Power supply, 120 VAC
fA Burner, connection
to DIN 4791
gÖ Compiled failure alarm
gS Boiler isolation valve
or
Boiler return valve
lÖ Burner stage 2/mod.
aBÖ External connections
a External safety equipment
(remove jumper
when connecting)
b External disable
(remove jumper
when connecting)
c External burner activation
aBA Safety circuit
aBH Power supply for connection
accessories
F1, F2 Fuses
F6 Fixed high limit E
EE
E 110˚C /
230˚F
(99˚C / 210˚F)
F7 Adjustable high limit R
95˚C / 203˚F
(100˚C / 212˚F)
K1-K10 Relays
S1 ON/OFF switch 8
S2 Test switch
5351 340 v1.4