Chapter 4: Programming the PEC Plus Phason
42 2009-06-15
Before you begin programming your PEC Plus, make sure:
It has power
All equipment has been properly connected to the correct terminals.
You know which equipment is connected to which relays and variable stages
All variable and relay stages have been properly configured and tested. For more information,
read Chapter 3: Configuring your PEC Plus on page 27.
Use
Appendix F: Settings worksheets on page 89 when programming your PEC
Plus.
Programming target temperatures
There are two options for the target temperatures:
Growth curve
Group set point
The PEC Plus uses one or the other. If the growth curve is enabled, the control uses the growth
curve settings. If the growth curve is not enabled, the control uses the group set point.
Programming the group set point
A group set point is the target or desired temperature for the room or zone. This is the temperature
that will be tracked by the individual stages. The individual set points for each variable and relay
stage will be adjusted relative to the group set point for that zone. Make sure you set the group set
point before setting the individual set points.
For example, let’s say the group set point is 80°F, a variable-stage fan set point is 5 degrees higher
(85°F), and a single-stage heater set point is 7 degrees lower (73°F). If you lower the group set point
by 5 degrees to 75°F, the set points for the fan and heater will also be lowered by 5 degrees to 80°F
and 68°F respectively.
Once a group set point is set, it remains at that temperature until you change it, or until an enabled
growth curve makes an adjustment to it.
To Next Page
Loading...