ClimateMaster MPC - Page 21

THE SMART SOLUTION FOR ENERGY EFFICIENCY
MPC MultiProtoCol DDC Controls
November 19, 2018
21
MPC Sequence of Operation
From the “MPC Setup/Status” screen press
<Maintenance>. From this screen, you can adjust
the temperature setpoint and watch the function of
the MPC. You can remove the Y1, Y2 output wires to
keep unit from going into Heat or Cool mode for this
operation.
1. You should see both the Occupied ICON
and the ”AUX Mode = Emergency ELEC
Heat”. If there is no RNET Sensor installed
with a humidity sensor present, the “RH”
Icon will be equal to 0.0.
2. Read the Zone Temperature and adjust the
Zone Heating Setpoint at least 2 ° above
the ambient zone temperature. (You
can use the RNet Sensor or the Equipment
Touch for this operation). You should be able
to observe the “Heat PID” Icon start
increasing as the MPC is set to go into a
heating cycle.
a. When the PID value increases above
30% the FAN ICON for the Supply
Fan will appear.
b. When the PID rises above 40% the RV
ICON will appear indicating the
Reversing Valve is on.
c. When the PID gets to 50% the
Compressor C1 will turn on after a 2
minute delay. You should see the C1
ICON after the delay.
d. If the Heating unit is wired to the unit
and thus not heating, the PID will
continue until it reaches 75% and then
you should see Compressor 2 or C2
ICON appear. If the PID is allowed to
rise it will trigger the Emergency
Electric Heat (AUX) output when it
goes above 90%. This assumes
heat demand has not been satised.
e. Decrease the Heating Setpoint 2°
below the Zone Temperature
and the Heating PID will begin to
move downward.
f. Once it falls below 90%, the ”AUX”
output will turn off and below 75%,
C2 will turn off.
g. When it falls below 50%, the
compressor output C1 will turn of
and once it falls below 40% the Supply
Fan will turn off.
3. Read the Zone Temperature and adjust the
Zone setpoint at least 2° below the
ambient Zone Temperature. You should be
able to observe the Cool PID start increasing
as the MPC is set to go into a Cooling cycle.
a. When the PID rises above 40% the
FAN ICON will appear indicating the
Fan has cycled on.
b. When the PID gets to 51% the
Compressor C1 will turn on after a 2
minute delay. You should see the C1
Icon after the delay.
c. When the Compressor C1 is “ON”
decrease the Zone Cooling Setpoint
2° above the Zone
Temperature and the Cooling PID will
begin to move downward.
d. Once it falls below 90%, C2 will
turn off.
e. When it falls below 50%, C1 will turn
of and once it falls below 40% the
Supply Fan will turn on.