Marvair MPC-10 PDS/Manual, 09/2020 New
6
Parameters Screen
1.
On this screen the user can change the parameters, within reason, of the controller. Below is a list of
parameters followed by what they control and the range at which it can be adjusted.
a.
Cooling Stage Differential - Adjusts the offset at which the controller brings on subsequent stages of
cooling (Range: 1 thru 5)
b.
Heating Stage Differential - Adjusts the offset at which the controller brings on subsequent stages of
heating (Range: 1 thru 5)
c.
Low Temperature Alarm Set Point - At what temperature the low temperature alarm is triggered
(Range: 35 thru 95)
d.
High Temperature Alarm Set Point - At what temperature the high temperature alarm is triggered
(Range: 35 thru 95)
e.
Y Fan Purge Time - The length of time(sec.) the indoor blower(s) stay on after a call for cooling is
satisfied (Range: 90 thru 600)
f.
W Fan Purge Time - The length of time (sec.) the indoor blower(s) stay on after a call for heating is
satisfied (Range: 90 thru 600)
g.
Anti-Short Cycle - The length of time (min.) the compressor is disabled after shutting off (Range: 3
thru 10)
h.
Lead Swap Period - The length of time (hrs.) between the controller automatically swapping the lead
unit (Range: 12 thru 240)
i.
Thermostat Offset - Offset for the temperature sensor, to correct temperature readings if needed
(Range: -5 thru 5)
2.
Continuous blower settings
a.
Enable All – Indoor blower runs continuously for all units
b.
Enable Lead – Indoor blower runs continuously for lead unit only
c.
Disable All – Indoor blower only runs during cooling/heating operation or during purge times set
from the parameters page.
4.
Manually change the lead unit. Each press will increment the lead unit once. The change will not take
affect for 5 seconds.
