Chapter 4: Programming
84
Phason
There are two types of heating and cooling element setups: “standard” and “temperature-based”
duty cycle. Programming a
standard
element means setting the temperature
set point
and selecting
Off
for the duty cycle. Programming a
temperature-based
duty cycles means setting the temperature
set point
, selecting
On
for the duty cycle, and setting the
on duration
and
off duration
.
How temperature-based duty cycles work
For heating elements
When the temperature is above the
set point
, the heating element is off. When the temperature
drops below the
set point
, the element switches on for the
on duration
and then off for the
off
duration
. If the temperature rises above the
set point
, the duty cycle switches off and will not switch
on again until the temperature drops below the
set point
.
For cooling elements
When the temperature is below the
set point
, the cooling element is off. When the temperature rises
above the
set point
, the element switches on for the
on duration
and then off for the
off duration
. If
the temperature drops below the
set point
, the duty cycle switches off and will not switch on again
until the temperature rises above the
set point
.
Heating and cooling elements worksheet
on page 138 when setting up
heating and cooling elements or temperature-based duty cycles.
To program heating or cooling elements (without a duty cycle)
1.
From the Main Menu, select
Settings
(1).
2.
From the Settings menu, select
Heat/Cool Stages
(2).
The display should look like one of the following examples.
The relay does not switch ON until a temperature condition has been met. For example, if the temperature rises above 85°F, switch
on a mister for 5 minutes and then OFF for 10 minutes. Repeat this until the temperature is below 85°F.
on duration
on duration
off duration
off duration
5 minutes
5 minutes
10 minutes
10 minutes
ON
OFF
All
on durations
are the same
All
off durations
are the same
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