FORM 150.24-NM27
YORK INTERNATIONAL
65
FIG. 18
5 STEP LOADING/UNLOADING (RETURN WATER CONTROL)
FIG. 19
7 STEP LOADING/UNLOADING (RETURN WATER CONTROL)
LD02091
LD02092
NOTE:
The micro controls loading and unloading
on a 10 STEP scale regardless of the num-
ber of stages present. Therefore, loading
and unloading responses on 5 Step (stan-
dard) chillers may appear delayed (time
between stages increased) when miss-
ing steps are activated or deactivated by
the micro.
NOTE:
1. The Lead Comp + 2 Steps, Lag Comp
Off Step is skipped on a temperature
drop.
2. The micro controls loading and unload-
ing on a 10 STEP scale regardless of
the number of stages present. There-
fore, loading and unloading responses
on 7 Step (optional) chillers may ap-
pear delayed (time between stages in-
creased) when missing steps are acti-
vated or deactivated by the micro.
5 STEP (STANDARD)
7 STEP
Summary of Contents for YCWJ45EE0
Page 29: ...FORM 150 24 NM27 YORK INTERNATIONAL 29 CONTROL CIRCUIT With I O Expansion Board LD02106...
Page 30: ...30 YORK INTERNATIONAL FIG 9 SYSTEM WIRING...
Page 31: ...FORM 150 24 NM27 YORK INTERNATIONAL 31 LD02678...
Page 35: ...FORM 150 24 NM27 YORK INTERNATIONAL 35 LD02679...
Page 36: ...36 YORK INTERNATIONAL MICROPANEL CONNECTION DIAGRAM With I O Expansion Board LD02107...
Page 37: ...FORM 150 24 NM27 YORK INTERNATIONAL 37 LD02108...