ARENA 30 A
17
Fig. 12
Fig.
11
2.9 Positioning the external
probe
The external probe is best installed on a wall
facing north, north-west or which borders
the majority of the main living area. The
probe must never be exposed to the early
morning sun, and, in general and where
possible, must not receive direct sunlight; if
necessary, it should be shielded.
The probe must not in any case be fitted near
windows, doors, ventilation openings, flues,
or sources of heat which may alter the read-
ing.
Note:
The maximum length allowed for
the electrical cable connecting the
boiler to the external probe is 50 m.
A common two-lead cable can also
be used.
1 2 3 4 5 6 7 8 9 10 10 12
Arena 30A connection block
D
E
F
L
H E
230/50 vac supply
fused @ 3amp.
X
Y
room t/stat
cyl t/stat
X - CH circuit -- MUST be volt free
Y - DHW circuit -- MUST be volt free
they must NOT be connected to any external power source
programmer
Fig. 10 d
H
1/2H
1/2H
H
N
N W
Suggested conection for storage:
Содержание ARENA 30 A
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