Heating; Heating Stages; 0-10V Heater - Airstream EXPERT PN110 User Manual

EXPERT PN110

8. HEATING

8.1.

Heating Stages

The controller can control 3 independent
heating stages. These stages are independent
from one another and each operate according
to their own temperature settings and probe
selection.
Reference Temperature: The On and Off
temperatures of heating stages are related
to the temperature set point. This means
they are automatically adjusted when the set
point changes.
Heaters 1-3: The controller has 3 basic heat-
ing outputs.
Heaters' Hi Fire: In addition to its 3 basic
heating outputs, the controller can simulate
additional heating outputs with the Hi Fire
option. When this option is used, the control-
ler doubles the number of heating outputs in
use. Each simulated heating output (Hi Fire
Step) operates as a regular heating output,
with its own start/stop temperatures, relay
selection and probe selection. Refer to sec-
tion 3 to activate the heaters' Hi fi re option.
Operating Diagram
of a Heating Stage
Heating
Output
Heater 1
Hi Fire
ON
Heater 1
Hi Fire
OFF
Heater 1
ON
Heater 1
OFF
Heat.1 Hi Heat.1 Hi Heat.1
ON T° OFF T° ON T°
1. Select:
» START / STOP TEMPS
1. Heaters
»
Heaters
Heater 2 On
Heater 2 Off
Heater 2 Hi On
Heater 2 Hi Off 78.0
Heater 1 On
...
2. Set the following parameters:
On temperature — Set the temperature below
which each heating stage starts. If the Hi fi re
option is used, set this temperature separately
for both steps of the heating stage.
Off temperature — Set the temperature at
which each heating stage stops. Note that
the Off Temperature of a heating stage must
be at least 0.5°F (0.3°C) higher that its On
Temperature. If the Hi fi re option is used, set
this temperature separately for both steps of
the heating stage.
8.2.
The controller has two 0-10V outputs that
can either be used to control heaters or fans.
To operate these outputs, the controller re-
fers to the average temperature reading of
their assigned temperature probes (see sec.
4.7.3). This section explains how a 0-10V
heater work.
Intensity (%)
Max
Min
T° of
Off
Heat.1
heater's
OFF T°
probes
The 0-10V heater start at their minimum inten-
sity when the temperature falls below the start
temperature of the output. The intensity of the
heater increases as the temperature decreases;
the maximum intensity is reached when the
temperature falls below the Max. Temperature
78.0
79.0
77.0
78.0

0-10V Heater

0-10V Heater
Max T° Start T° Stop T°
parameter setting.
1. Select:
» START / STOP TEMPS
5. 0-10V Outputs
»
» Select the desired 0-10V Output
* This menu is accessible if a 0-10V output is enabled
(sec. 4.5).
Start Temp 75.0°F
Min: 10 Max:
Max Output at: 72.5
Stop at: 70.0
2. Set the following parameters:
Start temperature — Set the start tempera-
ture to the desired value.
Minimum & max speeds — Set the minimum
and maximum speeds of the 0-10V output.
The maximum speed must be greater than
the minimum speed.
Maximum output at — Set the temperature
at which the output reaches its maximum
speed (this parameter must smaller than the
start temperature).
Stop at — This is the temperature below
which the 0-10V output stops.
T° of
0-10V
heater
probes
EXPERT PN110 rev.23
100
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