Sime AQUA 25 BF TS Manual De Instrucciones página 68

2.7.2 Boiler wiring diagram with optional RVA 43.222 unit
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KEY
IG Main switch
TB Tank stat
R Relay
TL Limit stat
TS Safety stat
EI Summer/Winter switch
TC Boiler stat
SPA Water pressure gauge triggered light
SA Power on light
SB Burner "lock out" warning light
PA Water switch
PI C.H. pump
PB Tank pump
B Gas-oil burner
TA Room stat
C RVA 43.222 control unit connectors (optional)
SS Type QAZ21 boiler immersion probe (optional)
SC Type QAZ21 boiler immersion probe (optional)
SE Outdoor temperature probe QAC31 (optional)
UA Type QAA70 room thermometer (optional)
NOTE: When connecting the RV 43 222 unit remove the
bridge between terminals 20-21 and remove the relay (R).
Fig. 9/a