Olimpia splendid Unico Boiler Instructions For Installation, Use And Maintenance Manual page 47

- Press buttons + and – on the console for at least 10 seconds (fig. 43).
The red LED emits an audible signal and flashes to signal the self-diagnosis function has been activated.
The console display will now show the current appliance configuration according to the following codes:
D2 on: appliance configuration number
K4 on: if anti-legionella function is enabled
S1 on: if electric heating element is enabled and anti-freeze function available
S4 on: if HEATER1 heating element is enabled
Then, the red LED and display icon flash. The electric HEATER1 heating element output is activated for a few seconds if enabled.
Should the UNICO BOILER WALL block and signal an error (as indicated in the following table), specify to the service centre the
error message shown on the display (fig. 43).
DESCRIPTION
Gas temperature probe fault (circuit open or shortcircuit)
Water temperature probe fault (circuit open o shortcircuit)
Gas overtemperature
Anti-legionella function failure
Communication line malfunction
2.3 COMMUNICATION LINE BETWEEN THE TWO UNITS (figs. 35, 36)
Use cables as specified in the table below.
Dimensions (W x H x D)
Weight (without packing)
OPERATIONAL LIMITS
Maximum operating temperature in cooling mode
Minimum operating temperature in cooling mode
Maximum operating temperatures in heating
Minimum operating temperatures in heating
From the UNICO BOILER WALL unit, lay the communication cable (fig. 36) so that it reaches the terminal block on the UNICO
BOILER MASTER.
The communication cable between the two units must be screened and have the following characteristics:
- 2-pin plus screen
- maximum length 15m.
- minimum cable cross-section 0.35mm2.
UNICO BOILER MASTER
Connect the communication cable to terminals ABG (fig. 36)
UNICO BOILER WALL
- Undo the fixing screw and remove the cover (fig. 35)
- Pass the power and communication cables through the hole in the cover.
- Secure the communication and power cables with a cable clamp (fig. 35)
- Connect the communication cable to terminals ABG (fig. 35 ref.B)
- Connect the power cable to terminals L N Earth (fig. 35 ref.A)
- Close the cover with the nut and nut cover.
NB Line G is the communication cable screening.
Before connecting the power cable, make sure that:
- The voltage and power frequency values match those specified on the appliance plate data.
WARNING: The appliance's power network must be equipped with a suitable omnipolar disconnection device compliant
with national installation regulations. It should nonetheless be checked that the electric power supply is earthed and
equipped with suitable protection against overloads and/or short-circuits (a type 10 AT delay fuse or other devices with
equivalent functions are recommended).
To prevent any risk of electric shock, the master switch must be disconnected before making electrical connections and carrying
out maintenance on the appliances.
UNICO BOILER MASTER
mm 902x516x229
kg 40
Internal ambient temp.
DB 35°C - WB 24°C
DB 18°C
DB 27°C
-
DISPLAY MESSAGE
t1
t2
H1
LE
CA
UNICO BOILER WALL
mm 760x253x190
kg 8
Outside ambient temp.
DB 43°C - WB 32°C
DB -10°C
DB 24°C - WB 18°C
DB -15°C
UNICO BOILER
2
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