30
INTER 2V4SA, rev.02
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
°
C to 10,0°C
(-9,0°F to 18,0
o
F). If the offset is negative,
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.
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).
• 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.
11
INTER 2V4SA, rev.02
INTER 2V4SA
6.
Temperature Settings
6.1. Temperature Units
To select the desired measuring units used
to display temperatures, set internal switch
# 2 to the desired position:
ON:
to display temperatures in
Celsius units.
OFF:
to display temperatures in
Fahrenheit units.
6.2. Viewing Temperatures
I. Viewing the Room Temperature
The room temperature is the average value
of all temperatures measured by activated
probes in proper operating condition.
• Select the
ROOM TEMP MIN / MAX
menu.
The average room temperature is displayed.
II. Viewing Probe Temperatures
The controller can display probe temperatures
individually. Probes can also be turned on or
off to control the temperature in different
parts of the building.
• Select the
PROBE TEMP / MIN / MAX
menu. The temperature reading of probe 1
is displayed, alternating with letters "
Pr 1
"
and the on/off state of the probe.
• Press the Other Functions button. The let-
ters "
Pr 1
" are displayed, alternating with the
temperature reading from probe 1 and the on/
off state of the probe.
• For each additional probe, Other Functions
button. The letters "
Pr x
" are displayed, al-
ternating with the temperature reading from
probe x and the on/off state of the probe.
2
ON
OFF
ON
OFF
2
III. Viewing Minimum / Maximum
Temperatures
Follow this procedure to see the lowest and
highest room temperature values that have
been recorded since the last reset.
• Select the
ROOM TEMP MIN / MAX
menu.
The average room temperature is displayed.
• Press the up-arrow adjustment button. The
maximum temperature is displayed, alternat-
ing with the letters "
Hi
".
• Press the down-arrow adjustment button.
The average temperature is displayed. Press
the down-arrow adjustment button once
again. The minimum temperature is dis-
played, alternating with the letters "
Lo
".
NOTE
: If you let the display flash for more
than 10 seconds, the controller resets the min
and max temperatures currently in memory
to the current average room temperature. To
avoid resetting these values, return to the
average temperature display using the adjust-
ment button (up-arrow or down-arrow) before
the 10 second delay has elapsed.
IV. Viewing Min/Max Probe Tem-
peratures
Follow this procedure to see the lowest and
highest temperature readings that have been
recorded by each probe since the last reset.
• Select the
PROBE TEMP / MIN / MAX
menu. The temperature reading of probe 1 is
displayed, alternating with the letters "
Pr 1
"
and the on/off state of the probe.
• Press the up-arrow adjustment button. The
maximum temperature of probe1 is displayed,
alternating with the letters "
Pr1 Hi
".
• Press the down-arrow adjustment button.
The current temperature of probe 1 is dis-
played once again.
