Fondital Antea 24kW Range, Installation, Use & Maintenance Manual

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Relationship between temperature (°C) and nominal resistance (Ohm) of the central heating probe (SR), of the DHW probe (SS) and of the return
probe (SRT).
T (°C) 0 2 4 6 8
0 27203 24979 22959 21122 19451
10 17928 16539 15271 14113 13054
20 12084 11196 10382 9634 8948
30 8317 7736 7202 6709 6254
40 5835 5448 5090 4758 4452
50 4168 3904 3660 3433 3222
60 3026 2844 2674 2516 2369
70 2232 2104 1984 1872 1767
80 1670 1578 1492 1412 1336
90 1266 1199 1137 1079 1023
Table 14 - Relationship between Temperature and Nominal resistance for temperature probes
Key
DK: water pressure switch
fL/TM: flow switch/timer
SS: DHW NTC probe 10K Ohm at 25 °C
B=3435
STR: return NTC probe 10K Ohm at
25 °C B=3435
SR1-SR2: CH NTC probe 10K Ohm at 25 °C
B=3435
Sf: flue gas NTC probe 10K Ohm at 25 °C
B=3435 or thermal fuse
VG: gas valve
P: boiler pump
MDV: electric deviating valve
E: ignition/flame detection electrode
V: brushless fan
0SCHEMOD22: electronic board
CN_A-CN_M: signal/load connectors
X2-X7: ground connectors
TA (PIN 1 and 2): room thermostat (use
a no load contact)
0CREMOTO04 (PIN 3 and 4): OpenTherm
remote control
SEXT (PIN 5 and 6): external NTC probe 10K
Ohm at 25 °C B=3977
SBC: water heater probe, boiler side, NTC 10K
Ohm at 25 °C B=3435
MULTIfUNCTION RELAY 230 Vac 5A
cosfi=1:
PIN 15: phase, normally open
PIN 16: phase, normally closed
PIN 17: neutral