2.8 ASSEMBLING
THE RVA 43.222 CLIMAT
CONTROLLER (fig. 10)
All functions of the “2R GT” boiler may
be controlled using the controller, code
8096303, which is supplied with an
outdoor temperature probe (SE) and a
boiler immersion probe (SC).
The controller is to be connected to an
additional series of low voltage connec-
tors for connection of the room tempe-
rature control unit (the connectors are
supplied in a bag inside the control
panel).
The probe bulb of the external hot
water tank, if any, (SS) code 6277110,
must be inserted in the hot water tank
sheath, while the bulb of the boiler
probe (SC) must be inserted in the boi-
ler sheath.
When assembling the outdoor tempe-
rature probe, follow the instructions
provided in the probe package. Refer to
fig. 9/a for wiring instructions.
IMPORTANT:
To make sure that the unit works pro-
perly, set the boiler control thermo-
stat as high as it will go.
30
Fig. 9/a
“2R GT” boiler
KEY
F Fuse (T 6A)
IG Main switch
SB Burner shutdown emergency light
TC Two-stage control thermostat
TS Safety thermostat
BBurner
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)
NOTE: Connect the TA by removing the jumper
from terminals 4-5. Connect up the RVA43.222
control device and remove the jumpers from ter-
minal boards 4-5, 4-6, 9-10
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