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Minimum
Maximum
Fig. 2.6
Adjustment of temperature WITHOUT
the external temperature probe (option-
al) fitted
In order to achieve optimal settings for
economy and comfort, we recommend ad-
justing the operating temperature of the c.h.
water according to the outside temperature,
positioning the knob as follows:
From 5 to 15 °C
Lower than - 5°C
Fig. 2.7
Your qualified installer will be able to recom-
mend the most suitable adjustment for your
system.
The temperature and pressure gauge (4,
Fig. 1.3 on page 8) will allow you to check
that the set temperature is obtained.
Adjustment of temperature WITH the ex-
ternal temperature probe (optional)
When the boiler is connected to the external
temperature probe (optional), the tempera-
- 12 -
INSTRUCTIONS FOR USE
Between
- 5 and + 5 °C
ture of the c.h. flow is automatically adjusted
with reference to the external temperature.
In this case the boiler must be properly set
by the Installer (section "External tempera-
ture probe setting (optional)" to page 49)
and the c.h. flow temperature control knob 8
must be positioned as illustrated in Fig. 2.8.
-15
Fig. 2.8
2.5
D.h.w. temperature
The temperature of the d.h.w. leaving the
boiler can be varied from a minimum of
about 35°C to a maximum of about 55°C
(Fig. 2.9), by turning the temperature con-
trol knob 9.
Minimum
Maximum
Fig. 2.9
Adjustment of the d.h.w. temperature is
completely separate from that of the c.h.
circuit.
The adjustment system integrated within
the boiler automatically controls the flow of
gas to the burner in order to keep the tem-
perature of d.h.w. delivered constant, be-
+15
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