McQuay ACZ 045A, Installation, Operation And Maintenance Manual

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IOMM ACZ/AGZ-1 55
Figure 26, Zone Terminal
MONITOR
ADJUST
TIME SCHEDULE
PASSWORD
ENTER
Com press or 1
Com press or 2
Sta ge 3
Sta ge 4
Sole noid #1
Frz stat #1Al m
Frz stat #2Al m
Min LowP res# 1
Min LowP res# 2
Occ upied
Flo w Fa ilur e
OA Lock out
Cir #2Le ad=O n
Pmp /Stp #1= 0
L vg W ater Temp
Ev ap Pr es #1
Ev ap P res # 2
OA/A I3 In put
Lv gWtr RBnd SP
Co ntrl Band SP
Act ual Lvg S P
Uno ccpd Lvg SP
OA Lo ckou t SP
Lvg Low Lim S P
Soft Sta C apcty
Ci r #1 Star ts
Cir #2 Start s
McQuay AGZ/AGR Global Chiller
INSERT 10
ON OFF
Disp lay
Button 1
Mode
Se lector
Pa nel
Mode
Sele ctor
Button
2
AGZ-AGR
Disp lay In dicato r Dot
O n/Off Status
3
Operating Mode Indicator
Up/Down Arrow Keys
Door
Displa y Ite m List
Wa rning Sig nal
A LARM
OA/A I3 Hi LimSP
OA/A I3 Re setSP
Display Area 1 1
Display Area 2 1
Display Area 3 1
Alarm Light
Lvg Wate r SP
% U nit Load
Soft Start Time
Pm p/St p #2 =0
Sole noid #2
St age 5 Op t.
Stag e 6 O pt.
OPERATING MODES
Two operating modes are included: Monitor and Adjust.
Monitor Mode
As soon as the ZT is connected, it completes a self-check, and starts up in the Monitor Mode.
Monitor Mode lets you view up to three of chiller settings/sensed values at a time.
To allow you to monitor your system, a clear plastic Insert (factory made and installed) relates the
ZT’s output to your McQuay Global UNT controller.
You can simultaneously monitor the chiller in three ways:
•
Monitor up to three settings/sensed values. A maximum of six items are accessible in each of the
three displays.
•
Read the symbols to the right of the display numbers to learn the on/off status of various inputs,
outputs, or modes (| = On status; m = Off status). This provides continuous monitoring of 18
different status (on/off).
•
Monitor alarm status–a flashing red alarm light and any flashing symbol ( |, m, s) visually notifies
you when your chiller has an alarm condition.
Adjust Mode
In Adjust Mode, the ZT displays information in each of the three numerical displays. Typically, the
displays are set up so that the relationship between the values can be viewed simultaneously. For
example:
Display 1 = Lvg Water Temp
Display 2 = Lvg Water SP
Display 3 = % Unit Load
This operating mode allows you to adjust any flashing setpoints. Setpoints adjusted by the ZT
remain in effect until you change them.