Trane Ascend ACR Series, Installation, Operation And Maintenance Manual

Page: 77 / 112

AC-SVX001A-EN 77
Ice Making (Running to Ice Making to
Running)
The following diagram shows the transition from
normal cooling to Ice making, back to normal cooling.
Figure 59. Sequence of events: ice making (running to ice making to running)
R u n n in g
Ic e M a k in g C o m m a n d :
1 . T ra c e r
2 . E x te rn a l
3 . F ro n t P a n e l
R u n n in g
(U n it is B u ild in g Ic e )
Ic e M a k in g C o m m a n d
W ith d ra w n (p rio r to
ic e c o m p le te )
R u n n in g
S ta g e a n d m o d u la te a ll
c o m p re s s o rs in
s e q u e n c e to fu ll lo a d
(if n o t a lre a d y )
S ta rt C o m p re s s o rs a n d
C irc u its p e r n o rm a l
s ta g in g – S e e o th e r
s e q u e n c e d ia g ra m s
R u n In h ib it
(Ic e to N o rm a l T ra n s itio n )
Ic e T o N o rm a l T ra n s itio n T im e r
(fix e d 2 m in s )
R u n U n lo a d , C lo s e E X V s a n d
P e rfo rm O p e ra tio n a l P u m p d o w n (if
re g d ) th e n S h u to ff C o m p re s s o rs ,
E n e rg ize H e a te rs
Ig n o re S o ftlo a d in g a n d
S e t C L S = 1 0 0 %
E n e rg ize Ic e B u ild in g
R e la y
E n fo rc e A ll L im its a n d
R u n n in g M o d e D ia g n o s tic s
H e a d R e lie f R e q u e s t
R e la y D e la y (1 to 6 0
m in s a d j)
E v a p L e a v in g
W a te r T e m p R is e s
A b o v e th e
D iffe re n tia l T o S ta rt
M a x im u m 1 :1 0 to fu lly
lo a d e d
D e -e n e rg ize H e a te rs , a n d
C o n tro l E X V s p e r n o rm a l
s ta g in g - S e e o th e r
s e q u e n c e d ia g ra m s
D e -e n e rg ize H e a te rs , a n d
C o n tro l E X V s p e r n o rm a l
s ta g in g - S e e o th e r
s e q u e n c e d ia g ra m s
R u n n in g A u to
E n fo rc e A ll L im its a n d R u n n in g M o d e D ia g n o s tic s
C o n tro l C irc u it’s
C o n d e n s e r F a n s fo r D iff
P re s s u re
C o n tro l C irc u it’s
C o n d e n s e r F a n s fo r D iff
P re s s u re
T u rn o ff b o th C irc u its ’
C o n d e n s e r F a n s
C o n firm N o
C o m p re s s o r C u rre n ts
C lo s e E X V s o r le a v e c lo s e d
fo r C irc u its ’ O ff C y c le
P re -p o s itio n E X V , P re s ta rt
C o n d e n s e r F a n s
D e -E n e rg ize H e a d
R e lie f R e q u e s t a n d Ic e
B u ild in g R e la y
E n e rg ize H e a d R e lie f
R e q u e s t R e la y
C o n tin u e to R u n E v a p
W a te r P u m p T h ro u g h o u t
S Stta arrtt--u up p a an nd d S Sh hu uttd do ow wn n