351579-YTS-B-0608
Johnson Controls Unitary Products
11
SIMPLICITY
®
PROGRAMMING OPTIONS
The paragraphs below provide a definition of, and specify the
function related to, each of the parameters that are field-
adjustable using the interfaces available. The Millennium
®
Unit
is shipped from the factory with the necessary options pre-
programmed as indicated by the model nomenclature. It is
always a good practice, though, to verify that the correct
parameters are properly configured for the unit you are
commissioning. You can find a complete list of field-adjustable
parameters in the
“Settable System Parameters”.
For a description of the parameters, see the
Settable System
Parameters below and Table 5.
INTERACTING THROUGH THE MILLENNIUM
®
SIMPLICITY
®
SET THE CLOCK
• Power up the unit.
• Press the Program button [upper left].
• Press the Test/Up button [upper right]. Hold it in and it will
step through the parameters, or push in to advance one
parameter at a time. Advance to parameter 63, Hours.
• Press Change [lower left] Press Up [upper right] or Down
[lower right] to the correct hour [24 hour time].
• Press Change to enter the new value.
• Press Up to get to parameter 64, Minutes.
• Press Change.
• Press Up or Down to get to the correct minute value. Press
Change to enter the new value.
• If you are done changing parameters, press Program to
exit the program mode.
PARAMETER SETTING
The buttons allow the operator to go to a specific parameter and
to view and change the data in that parameter.
• To enter the parameter setting mode, press the Program
button. The control will display the current parameter num-
ber in the two-digit display, and the present value of that
parameter in the four-digit display.
• To change to another parameter, press the /Up or /Down
button to move to the address of the desired parameter.
The present value of that parameter will display.
• To change the data, press the /Change button. The value
will flash. While it is flashing, press the /Up or /Down but-
ton to increase or decrease the value.
• When the desired new value is showing, press the
/Change Data button again to tell the control to store the
new value. You can verify that the new value is in place
when the value stops flashing.
• To exit Program mode, press the Program button again.
INITIAL STARTUP OPTIONS
Commissioning a new Millennium
®
installation requires some
field adjustments to the
Simplicity
®
control program. Most of
these adjustments simply involve setting up the various
setpoints that are specific to your customer’s needs (i.e.
building pressure) or enabling some extended options that are
integrated into the Simplicity control. Also, if there are field
changes, i.e. a modulating power exhaust option, the control
configuration will need to be modified for the new option.
METRIC OPERATION (ENGLISH)
The factory default for this option is OFF. The metric (SI)
conversions are part of the controller software; when the Metric
parameter is selected, temperature setpoints and readings will
convert to Centigrade (°C).
SETTABLE SYSTEM PARAMETERS
The following headings list each parameter’s name and its
default setting. The control is set at the factory for the options of
the specific unit; if a replacement control is being installed, the
entire parameter set must be matched to the unit. The number
in (parentheses) is the value of a parameter in an un-configured
control.
Compressors - (2) -
This tells the control the number of
compressors available. The Factory Default [the value in an
unconfigured replacement control] is 2 and can be adjusted
from 1 to 4.
Heat Stages - (2) -
This tells the control the number of heating
stages available. This parameter may be set from 0 to 3. The
default setting is 2 stages of heat. When modulating gas heat is
installed the parameters is always set to 2.
Hydronic Heat - (OFF) -
This tells the control that a Hot Water Coil
is installed. If the control is going to modulate the Hot Water Valve
it will also turn on the Heat One output. This is to energize the VAV
heat relay for the VAV boxes. The default is OFF for this option. If
this parameter is enabled, remember to set the Hydronic Heat First
and Second Stage Setpoints and the Economizer Loading
Setpoint found in the ”
Simplicity
®
Setpoints”.
Stage 1 Hydronic Heat SAT Setpoint - (120 °F) -
When the
Hydronic Heat option is enabled, the control will maintain this SAT
setpoint for a call for first stage Heating, by modulating the Hot
Water Valve. This is the reset temperature when operating a VAV
unit in the Heating mode. The reset range for SAT setpoint is from
80 °F to 180 °F with 120 °F shipped as the default.
Hydronic Heat Reverse Actuated Valve - (OFF) -
This setting
is to allow convenient use of reverse acting water valves;
setting this parameter to (ON) will change the signal to 2VDC =
open, 10 VDC = closed.
SAT Control for Cooling - (ON) -
This tells the control if it is
going to do excessive SAT monitoring and tripping or not, for
Cooling. The SAT should be maintained in an acceptable
range in order to achieve reliable compressor operation. The
compressor trip limits are user adjustable between 40 °F and
65 °F in one degree increments. The default cooling trip
limits are 50 °F for stages 2-4, and 45 °F for stage 1. When
the SAT drops below the trip limit for each respective
compressor, that compressor is locked out and a 5 minute
ASCD is initiated for that compressor. If this option is
enabled, remember to set the compressor cooling limits for
low limit trip.
