
________________________________________________________________________________
40
AST 14 C 259/00
Key:
X1/X10: connectors
SR:
heating probe NTC 10KOhm
E: ignition/detection
electrode
SS:
DHW probe NTC 10KOhm
P:
circulation
pump SRT:
return
probe
NTC
10KOhm
V:
fan (CTFS only) FL:
flow
switch
TF:
flue thermostat (CTN only)
VG:
gas valve
PV:
flue gas pressure switch (CTFS only)
TL:
limit thermostat
DK:
water pressure switch
MOD: gas valve modulation coil
Connections to be made by the installer:
TA (pins 1 and 2): ambient thermostat (clean contact free from potential)
OT (pins 3 and 4):
remote control (shielded wires< 30m)
6.3 WIRING DIAGRAM
Connecting wires to outer
terminal box
1 2 3 4