Specifications

Table 2 — CVC Display Data (cont)
EXAMPLE 18 — SETUP2 DISPLAY SCREEN
To access this display from the CVC default screen:
1. Press MENU
.
2. Press SERVICE
.
3. Scroll down to highlight EQUIPMENT SERVICE .
4. Press SELECT
.
5. Scroll down to highlight SETUP2
.
DESCRIPTION STATUS UNITS POINT DEFAULT
Capacity Control
Proportional Inc Band 2-10 gv
inc 6.5
Proportional DEC Band 2-10 gv dec 6.0
Proportional ECW Gain 1-3 gv
ecw 2.0
Guide Vane Travel Limit 30-100 % gv
ctrl 80
Diffuser Control
Diffuser Option 0-1 DSABLE/ENABLE diff
opt DSABLE
Guide Vane 25% Load Pt 0-78 % gv
25 25
Diffuser 25% Load 0-100 % df 25 0
Guide Vane 50% Load Pt 0-78 % gv
50 50
Diffuser 50% Load Pt 0-100 % df 50 0
Guide Vane 75% Load Pt 0-78 % gv 75 75
Diffuser 75% Load Pt 0-100 % df
75 0
Diffuser Full Span mA 15-22 mA diff ma 18
VFD Speed Control
VFD Option 0/1 DSABLE/ENABLE vfd
opt DSABLE
VFD Gain 0.1-1.5 vfd gain 0.75
VFD Increase Step 1-5 % vfd
step 2
VFD Minimum Speed 65-100 % vfd min 70
VFD Maximum speed 90-100 % vfd max 100
NOTE: No variables are available for CCN read operation; forcing shall be supported on service screens.
EXAMPLE 19 − LEADLAG DISPLAY SCREEN
To access this display from the CVC default screen:
1. Press MENU
.
2. Press SERVICE
.
3. Scroll down to highlight EQUIPMENT SERVICE
.
4. Press SELECT
.
5. Scroll down to highlight LEADLAG
.
DESCRIPTION STATUS UNITS POINT DEFAULT
Lead Lag Control
LEAD/LAG Configuration 0-3 leadlag 0
DSABLE=0, LEAD=1,
LAG=2, STANDBY=3
Load Balance Option 0/1 DSABLE/ENABLE load/bal DSABLE
Common Sensor Option 0/1 DSABLE/ENABLE commsens DSABLE
LAG Percent Capacity 25-75 % lag
per 50
LAG Address 1-236 lag add 92
LAG START Timer 2-60 MIN lagstart 10
LAG STOP Timer 2-60 MIN lagstop 10
PRESTART FAULT Timer 2-30 MIN preflt 5
STANDBY Chiller Option 0/1 DSABLE/ENABLE stnd
opt DSABLE
STANDBY Percent Capacity 25-57 % stnd per 50
STANDBY Address 1-236 stnd
add 93
NOTE: No variables are available for CCN read or write operation.
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