174
RT-SVX24Q-EN
will open. Depending on the fault, the CPM may either
auto-reset or it may lock-out. The CPM can be manually
reset by cycling control power.
NNoottee:: If the compressor has tripped due to an
overheated windings condition, the motor
winding temperature sensor resistance (PTC) will
be 4500 ohms or greater; the resistance must be
less than 2750 ohms before the 5 minute reset
timer becomes enabled.
Figure 133. Compressor locations and staging
sequence (fixed speed compressors)
Table 59. Staging sequence (fixed speed
compressors)
Compressor Staging (Lead)
Compressor Staging
(Lag)
1A 1B 2A 2B 1A 1B 2A 2B
Stage 1
X X
Stage 2
X X X X
Stage 3
X X X X X X
Stage 4
X X X X X X X X
Table 60. Compressor data (fixed speed compressors)
Unit Size
Compressors
Num-
ber Size
Desig-
nator
Type
90/100 Ton Std
& Hi-Capacity
2
CSH-
N250
1A, 2A
Scroll
2
CSH-
N250
1B, 2B
Scroll
105/118 Ton
Std & Hi-
Capacity
2
CSH-
N250
1A, 2A
Scroll
2
CSH-
N315
1B, 2B
Scroll
120/128 Ton
Std & Hi-
Capacity
2
CSH-
N315
1A, 2A
Scroll
2
CSH-
N315
1B, 2B
Scroll
130/140 Ton
Std & Hi-
Capacity
2
CSH-
N315
1A, 2A
Scroll
2
CSH-
N374
1B, 2B
Scroll
150/162 Ton
Std
2
CSH-
N374
1A, 2A
Scroll
2
CSH-
N374
1B, 2B
Scroll
Figure 134. eFlex™ compressor locations and staging
sequence
CONTROL BOX
COMPRESSOR 2A
HI DESIGNATOR "K3"
COMPRESSOR 2B
HI DESIGNATOR "K4"
COMPRESSOR 1C
HI DESIGNATOR "K13"
COMPRESSOR 1B
HI DESIGNATOR "K12"
COMPRESSOR 1A
HI DESIGNATOR "K11"
UUnniitt SSttaarrttuupp
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