"2R GT OF " boiler
GRIGIO-GREY
KEY
F
Fuse (T 6.3A)
IG
Main switch
TC Two-stage control thermostat
TS Safety thermostat
B
Burner
PI
System pump
PB Boiler pump
C
Connectors for RVA 43.222 controller
(black - red - brown)
TA Environment thermostat
UA Type QAA70 room temperature control
unit (optional)
SE Outdoor temperature probe (optional)
SC Type QAZ21 boiler probe (optional)
SS Type QAZ21 hot water probe (optional)
SA Green voltage LED
NOTE: Connect the TA by removing the jumper
from terminals 4-5. Connect up the RVA43.222
control device and remove the jumpers from
terminal boards 4-5, 4-6, 9-10
Fig. 9/a
47