Heater Settings - Airstream INTER 2V4SA User Manual

INTER 2V4SA
10.3. Heater Settings
I. Adjusting Heater Offsets
The heater offset can provide substantial
energy savings if correctly adjusted accord-
ing to the outside temperature. This offset
represents the number of degrees below the
set point at which the heating units turn off
(see diagram above). The offset of heaters 1
and 2 can be adjusted from -5,0
(-9,0°F to 18,0 F). If the offset is negative,
o
the heating units will turn off at temperatures
above the set point. If the controller uses
cascade heaters , only Heater 1 offset has
to be set.
• Select the HEATER 1 OFFSET/DIFFEREN-
TIAL or HEATER 2 OFFSET/DIFFERENTIAL
menu. The current heater offset is displayed,
alternating with the letters "OF.SET".
• Use the adjustment buttons to set it to the
desired value.
II. Adjusting Heater Differentials
The heating differential is the temperature
difference between the moment the heat-
ing units turn on and the moment they turn
off (see diagram above). It can be adjusted
between 0,3°C and 10,0°C (0,5°F and
18,0°F).
• Select the HEATER 1 OFFSET/DIFFEREN-
TIAL or HEATER 2 OFFSET/DIFFERENTIAL
menu.
• Press the Other Functions button. The
differential is displayed, alternating with the
letters "dIF".
• Use the adjustment buttons to set it to the
desired value.
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INTER 2V4SA, rev.02
III. Adjusting the Max. T° Differ-
ence Between Zones
When using zoned heating, a built-in protec-
tion will operate the fans according to the
zone 1 probes whenever the temperature
difference between zones is greater than this
parameter. The default value is 4,0°C (7,2°F)
and values range from 0,3 °C to 20,0°C
(0,5°F to 36,0°F).
C to 10,0°C
°
• Select the HEATER 2 — OFFSET/DIFFER-
ENTIAL menu.
• Press the Other Functions button twice. The
maximum temperature difference between
zones is displayed, alternating with the let-
ters "Zn diF.".
• Use the adjustment buttons to set this
parameter to the desired value.