Carrier WEATHERMAKER 48J - Page 45

STAGE
COMP
A1
A2
B1
UNIT
020
025
027
STAGE
COMP
A1
A2
B1
UNIT
020
025
027
OFF
OFF
OFF
0%
0%
0%
Table 57 -- Staging Sequence Without Hot Gas Bypass --
48/50A3,A5020-027 and Multi-Stage 48/50A2,A4020-027
SEQUENCE 1
1 I 2
Compressor Status
ON ON
OFF OFF
OFF ON
Unit Capacity 48/50A
30% 70%
33% 67%
33% 67%
ON
ON
ON
100%
100%
100%
OFF
OFF
OFF
0%
0%
0%
SEQUENCE 2
1 I 2
Compressor Status
OFF OFF
ON ON
OFF ON
Unit Capacity 48/50A
30% 70%
33% 67%
33% 67%
OFF
OFF
OFF
0%
0%
0%
*With Minimum Load Valve ON.
Table 58 u Staging Sequence With Hot Gas Bypass --
48/50A3,A5020-027 and Multi-Stage 48/50A2,A4020-027
SEQUENCE 1
1 2 3
Compressor Status
ON* ON ON
OFF OFF OFF
OFF OFF ON
Unit Capacity 48/50A
10% 30% 70%
17% 33% 67%
17% 33% 67%
ON
ON
ON
100%
100%
100%
OFF
OFF
OFF
0%
0%
0%
SEQUENCE 2
1 2 3
Compressor Status
OFF OFF OFF
ON* ON ON
OFF OFF ON
Unit Capacity 48/50A
10% 30% 70%
17% 33% 67%
17% 33% 67%
STAGE
COMP
A1
A2
B1
B2
UNIT
030
035
040
O5O
060
OFF
OFF
OFF
OFF
0%
0%
0%
0%
0%
Table 59 -- Staging Sequence Without Hot Gas Bypass --
48/50A3,A5030-060 and Multi-Stage 48/50A2,A4030-060
ON
OFF
OFF
OFF
25%
20%
25%
25%
25%
SEQUENCE 1
I 2 I a
Compressor Status
ON ON
OFF ON
ON ON
OFF OFF
Unit Capacity 48/50A
50% 75%
50% 80%
50% 75%
50% 75%
50% 75%
ON
ON
ON
ON
100%
100%
100%
100%
100%
OFF
OFF
OFF
OFF
0%
0%
0%
0%
0%
I 1
OFF
ON
OFF
OFF
25%
20%
25%
25%
25%
SEQUENCE 2
I 2 I 3
Compressor Status
ON OFF
OFF ON
ON ON
OFF ON
Unit Capacity 48/50A
50% 75%
50% 70%
50% 75%
50% 75%
50% 75%
STAG E
COMP
A1
A2
B1
B2
UNIT
030
035
040
O5O
060
Table 60 -- Staging Sequence With Hot Gas Bypass -- 48/50A3,A5030-060
0 I t
OFF ON*
OFF OFF
OFF OFF
OFF OFF
0% 10%
0% 7%
0% 14%
0% 16%
0% 18%
*With minimum load valve ON.
SEQUENCE 1
2 I 3 I 4 I s
Compressor Status
ON ON ON ON
OFF OFF ON ON
OFF ON ON ON
OFF OFF OFF ON
Unit Capacity 48/50A
25% 50% 75% 100%
20% 50% 80% 100%
25% 50% 75% 100%
25% 50% 75% 100%
25% 50% 75% 100%
SEQUENCE 2
0 I t I 2 I a I 4
Compressor Status
OFF OFF OFF OFF OFF
OFF ON* ON ON ON
OFF OFF OFF OFF ON
OFF OFF OFF ON ON
Unit Capacity 48/50A
0% 10% 25% 50% 75%
0% 7% 20% 50% 70%
0% 14% 25% 50% 75%
0% 16% 25% 50% 75%
0% 18% 25% 50% 75%
ON
ON
ON
100%
100%
100%
ON
ON
ON
100%
100%
100%
ON
ON
ON
ON
100%
100%
100%
100%
100%
ON
ON
ON
ON
100%
100%
100%
100%
100%
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