Trane Ascend ACR Series User Manual

74
AC-SVX001A-EN
Satisfied Setpoint
The following diagram shows the normal transition
from Running to shutting down due to the Evap
Leaving water temp falling below the differential to
stop setpoint.
Figure 56. Sequence of events: satisfied setpoint
* Note: Operational Pumpdown is required if the Outdoor Air Tem perature is less than 50F.
**
Note: Operational Pumpdown is Terminated Normally when the Evaporator Refrigerant
Pressure is at or below 20 PSIA.
The Maximum Allowed Tim e for Operational Pumpdown is 2 Minutes.
8
/
1
0
/
2
0
1
2
-
1
0
/
1
3
/
2
0
1
2
S h u ttin g D o w n
Las t C irc u it M o d e: S h u ttin g D ow n
S ubM o d e : O p erational P um pdow n
*
6
6
6
/
/
/
1
1
2
2
/
/
/
2
2
0
0
0
1
1
2
2
-
8
8
8
/
/
/
1
1
0
0
0
/
/
/
2
2
0
0
0
1
1
2
2
R u n n in g
Las t C ircuit M o d e :
R un n in g
1
1
0
0
0
/
/
/
1
1
3
3
3
/
/
/
2
2
0
0
0
1
1
2
2
-
1
1
2
2
/
/
/
1
1
1
1
/
/
/
2
2
0
0
0
1
1
2
2
A u to
B oth C ircuit M o d e s :
W aitin g fo r N e ed to C o o l
8
/
1
1
/
2
0
1
2
6
/
1
3
/
2
0
1
2
R un n in g
Las t
C om p resso r
A t M in S p ee d
1
0
/
1
4
/
2
0
1
2
D iffe re n tia l to S top is M et
O p e ra tio nal Pum pdow n
(0 S e conds to 2 M in u te s)
Fully C lo se E X V
P erfo rm O p erational
P um pdow n for L ast
C irc u it if R equired
*
S end S to p C o m m and
To C o m pre ssor
IF*
N o P u m p do w n R eq u ire d
P um pdo w n
R eq uired
Turn O ff L a st C irc u it’s
C o n d ense r Fan s
N orm a l P u m pd ow n T e rm in a tion
**
C riteria is M et fo r Las t C ircuit
666
6
6
6
6
6
///
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111
1
1
1
1
1
222
2
2
2
2
2
///
/
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/
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/
222
2
2
2
2
2
000
0
0
0
0
0
111
1
1
1
1
1
222
2
2
2
2
2
---
-
-
-
111
1
1
1
1
1
222
2
2
2
2
2
///
/
/
/
/
/
111
1
1
1
1
1
111
1
1
1
1
1
///
/
/
/
/
/
222
2
2
2
2
2
000
0
0
0
0
0
111
1
1
1
1
1
222
2
2
2
2
2
E nfo rc e A ll N on R u n n in g
M o d e D iagnos tic s
6
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1
1
1
5
5
5
5
5
5
5
5
/
/
//22
2
2
2
00
0
0
0
0
0
0
0
0
11
1
1
1
1
1
1
22
2
2
2
2
2
2
E
1
2
/
1
1
/
2
0
1
2
A uto
C lo se E X V
(0 to 2 5 S e c o n ds)
6
/
1
2
/
2
0
1
2
-
1
2
/
1
1
/
2
0
1
2
C h eck for
N o rm al P u m p d o w n
Term inatio n C rite ria M e t
**
6
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1
1
5
5
5
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/
2
2
2
2
2
2
2
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
/
/
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/
/
/
/
/
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
/
/
/
/
/
/
/
/
2
2
2
2
2
2
2
2
2
2
0
0
0
0
1
1
2
11
1
1
1
1
1
1
n
22
2
2
2
2
2
2
n
//
/
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/
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/
i
n
11
1
1
1
1
1
1
n
11
1
1
1
1
11
g
//
/
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/
22
2
2
2
2
2
2
2
2
0
0
0
0
1
2
E nergize L a s t C ircu it
O il H eate rs
SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Trane Ascend ACR Series Specifications

General

Brand	Trane
Model	Ascend ACR Series
Category	Chiller
Language	English