Chapter 3: Configuring your PEC Plus Phason
32 2009-06-15
To configure temperature probes
1. Press Function until the LED for CONFIGURATION is lit.
2. Press
Up or Down until prob is displayed and then press Select.
3. Press
Up or Down to select the probe you want to configure and
then press Select.
The display shows the current configuration.
4. Press Up or Down to select a different configuration and then press
Select.
The control returns to the Probe menu.
5. Repeat steps 3 and 4 for each probe you want to configure.
6. Press Back once to return to the Configuration menu, or twice to return to the main display.
Configuring hysteresis
Hysteresis helps prevent damage to the relays, variable stages, and the equipment connected to them
by preventing the stages from switching on and off rapidly when the temperature is hovering close
to the set point.
Hysteresis is the number of degrees above the set point that a heating stage or relay switches off,
and the number of degrees below the set point that a cooling stage or relay switches off. For
example, a household thermostat might switch on a furnace at 68 °F when the house is cooling
down, but switch it off at 70 °F when the house is warming up. The difference between these two
values is the hysteresis.
The default for hysteresis is 1.0 °F (0. 5°C) and the range is 0.3 to 5.0°F (0.2 to 2.8°C).
To configure the hysteresis
1. Press Function until the LED for CONFIGURATION is lit.
2. Press
Up or Down until xyst is displayed and then press Select.
The display shows the current hysteresis.
3. Press Up or Down to adjust the hysteresis and then press Select.
The control returns to the Configuration menu.
4. Press Back to return to the main display.
xyst
CONFIGURATION
x 03
prob
CONFIGURATION
p1on
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