YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
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SECTION 8 - MICROPANEL<br />
Setpoints Key Operation<br />
Cooling setpoints and ranges may be programmed by<br />
pressing the SETPOINTS key. The first setpoint entry<br />
screen will be displayed as shown below. The first<br />
line of the display will show the chiller default (DEF),<br />
minimum acceptable value (LO) and maximum acceptable<br />
value (HI). The second line shows the actual<br />
programmed value. Table 10 also shows the allowable<br />
ranges for the cooling setpoints and Control Ranges.<br />
Note that the Imperial units are exact values while the<br />
Metric units are only approximate.<br />
SETPOINTS ◄DEF XXXXX LO XXXXX HI XXXXX<br />
LOCAL COOLING SETPOINT = XXX.X °F<br />
Pressing the SETPOINTS key a second time or the ▼<br />
(ARROW) key will display the leaving chilled liquid<br />
Control Range, default, and low/high limits.<br />
SETPOINTS ◄DEF XXXXX LO XXXXX HI XXXXX<br />
LOCAL CONTROL RANGE = +/- X.X °F<br />
Pressing the SETPOINTS key or the ▼ (ARROW) key<br />
a third time will display the remote setpoint and cooling<br />
range. This display automatically updates about<br />
112<br />
SETPOINTS KEY<br />
SETPOINTS<br />
KEY<br />
LD10605<br />
FORM 201.28-NM1.1<br />
ISSUE DATE: 8/29/2012<br />
every 2 seconds. This remote setpoint message is show<br />
below:<br />
SETPOINTS REMOTE SETPOINT = XXX.X °F<br />
REMOTE CONTROL RANGE = +/- X.X °F<br />
If there is no remote setpoint being utilized, the remote<br />
setpoint value will be displayed as XXXXXX and the<br />
remote Control Range will display XXX.<br />
Pressing the SETPOINTS key or the Arrow key a<br />
fourth time will bring up a screen that allows the Maximum<br />
Remote Temperature Reset to be programmed.<br />
This message is show below:<br />
SETPOINTS ◄DEF XXXXX LO XXXXX HI XXXXX<br />
MAXIMUM REMOTE TEMP RESET = XXX.X °F<br />
The values displayed under each of the key presses<br />
may be changed by keying in new values and pressing<br />
the � (ENTER) key to store the new value into memory.<br />
Where more than one value may be keyed in on a<br />
display, a portion of the data that does not need updating<br />
may be skipped by pressing the � (ENTER) key.<br />
The � (ENTER) key must also be pressed after the<br />
last value in the display to store the data into memory.<br />
JOHNSON CONTROLS
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