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Carrier WEATHERMAKER 48/50AJ Operation And Service Manual page 45

Single package large rooftop units with comfortlink version 5.x controls
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STAGE
0
COMP
A1
OFF
A2
OFF
B1
OFF
UNIT
020
0%
025
0%
027
0%
STAGE
0
COMP
A1
OFF
A2
OFF
B1
OFF
UNIT
020
0%
025
0%
027
0%
*With Minimum Load Valve ON.
STAGE
0
COMP
A1
OFF
A2
OFF
B1
OFF
B2
OFF
UNIT
030
0%
035
0%
040
0%
050
0%
060
0%
Table 60 — Staging Sequence with Hot Gas Bypass — 48/50A3,A5030-060
STAGE
0
1
COMP
A1
OFF
ON*
A2
OFF
OFF
B1
OFF
OFF
B2
OFF
OFF
UNIT
030
0%
10%
035
0%
7%
040
0%
14%
050
0%
16%
060
0%
18%
*With minimum load valve ON.
Table 57 — Staging Sequence without Hot Gas Bypass —
48/50A3,A5020-027 and Multi-Stage 48/50A2,A4020-027
SEQUENCE 1
1
2
Compressor Status
ON
ON
OFF
OFF
OFF
ON
Unit Capacity 48/50A
30%
70%
33%
67%
33%
67%
Table 58 — 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%
Table 59 — Staging Sequence without Hot Gas Bypass —
48/50A3,A5030-060 and Multi-Stage 48/50A2,A4030-060
SEQUENCE 1
1
2
3
Compressor Status
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
Unit Capacity 48/50A
25%
50%
75%
20%
50%
80%
25%
50%
75%
25%
50%
75%
25%
50%
75%
SEQUENCE 1
2
3
4
Compressor Status
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
Unit Capacity 48/50A
25%
50%
75%
20%
50%
80%
25%
50%
75%
25%
50%
75%
25%
50%
75%
3
0
ON
OFF
ON
OFF
ON
OFF
100%
0%
100%
0%
100%
0%
4
0
1
ON
OFF
OFF
ON
OFF
ON*
ON
OFF
OFF
100%
0%
10%
100%
0%
17%
100%
0%
17%
4
0
1
ON
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
100%
0%
25%
100%
0%
20%
100%
0%
25%
100%
0%
25%
100%
0%
25%
5
0
1
ON
OFF
OFF
ON
OFF
ON*
ON
OFF
OFF
ON
OFF
OFF
100%
0%
10%
100%
0%
7%
100%
0%
14%
100%
0%
16%
100%
0%
18%
45
SEQUENCE 2
1
2
Compressor Status
OFF
OFF
ON
ON
OFF
ON
Unit Capacity 48/50A
30%
70%
33%
67%
33%
67%
SEQUENCE 2
2
3
Compressor Status
OFF
OFF
ON
ON
OFF
ON
Unit Capacity 48/50A
30%
70%
33%
67%
33%
67%
SEQUENCE 2
2
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%
SEQUENCE 2
2
3
4
Compressor Status
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
Unit Capacity 48/50A
25%
50%
75%
20%
50%
70%
25%
50%
75%
25%
50%
75%
25%
50%
75%
3
ON
ON
ON
100%
100%
100%
4
ON
ON
ON
100%
100%
100%
4
ON
ON
ON
ON
100%
100%
100%
100%
100%
5
ON
ON
ON
ON
100%
100%
100%
100%
100%
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