Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 229
Packaged rooftop cooling units with gas heat, optional electric heat, or hydronic heat and comfortlink controls version 10.x
Hide thumbs
Also See for WeatherExpert 48N2:
- Controls, start-up, operation, service and troubleshooting instructions (248 pages) ,
- Installation instructions manual (52 pages) ,
- Installation instructions manual (48 pages)
Table of Contents
Advertisement
UNIT SIZE P, Q STAGING SEQUENCE (90 AND 105 TON NOMINAL CAPACITY)
STAGE
0
COMP
A1
OFF
A2
OFF
A3
OFF
B1
OFF
B2
OFF
B3
OFF
UNIT
090
0%
105
0%
*Minimum load valve (MLV). MLV is enabled on Circuit A when decreasing from stage 1 to stage 0 to provide an increased stage of capacity.
UNIT SIZE P, Q STAGING SEQUENCEWITH DIGITAL COMPRESSOR (90 AND 105 TON NOMINAL CAPACITY)
STAGE
0
COMP
A1
OFF
A2
OFF
A3
OFF
B1
OFF
B2
OFF
B3
OFF
UNIT
090
0%
105
0%
UNIT SIZE R, S, T STAGING SEQUENCE (120 to 150 TON NOMINAL CAPACITY)
STAGE
0
COMP
A1
OFF
A2
OFF
OFF
A3
OFF
OFF
A4
OFF
OFF
B1
OFF
OFF
B2
OFF
OFF
B3
OFF
OFF
B4
OFF
OFF
UNIT
120
0%
11%
130
0%
150
0%
*Minimum load valve (MLV). MLV is enabled on Circuit A when decreasing from stage 1 to stage 0 to provide an increased stage of capacity.
UNIT SIZE R, S, T STAGING SEQUENCE WITH DIGITAL COMPRESSOR (120 to 150 TON NOMINAL CAPACITY)
STAGE
0
COMP
A1
OFF
A2
OFF
A3
OFF
A4
OFF
B1
OFF
B2
OFF
B3
OFF
B4
OFF
UNIT
120
0%
7% to 14%
130
0%
6% to 11%
150
0%
6% to 13%
APPENDIX C — UNIT STAGING TABLES (CONT)
1*
1
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
11%
15%
13%
17%
1
ON
OFF
OFF
OFF
OFF
OFF
8% to 15%
26% to 33%
8% to 17%
25% to 33%
1*
1
2
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
14%
28%
8%
11%
22%
9%
13%
25%
1
2
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
21% to 28%
33% to 40%
17% to 22%
30% to 35%
19% to 25%
31% to 38%
SEQUENCE
2
3
Compressor Status
ON
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
Total Capacity
33%
49%
33%
50%
SEQUENCE
2
3
Compressor Status
ON
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
Total Capacity
41% to 49%
42% to 50%
SEQUENCE
3
4
Compressor Status
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
Total Capacity
40%
52%
35%
48%
38%
50%
SEQUENCE
3
4
Compressor Status
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
Total Capacity
45% to 52%
57% to 64%
43% to 48%
56% to 61%
44% to 50%
56% to 63%
229
4
5
ON
ON
ON
ON
OFF
ON
ON
ON
ON
ON
OFF
OFF
67%
82%
67%
83%
4
5
ON
ON
ON
ON
OFF
ON
ON
ON
ON
ON
OFF
OFF
59% to 67%
74% to 82%
58% to 67%
75% to 83%
5
6
ON
ON
ON
ON
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
ON
OFF
OFF
64%
76%
61%
74%
63%
75%
5
6
ON
ON
ON
ON
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
ON
OFF
OFF
OFF
69% to 76%
81% to 88%
69% to 74%
82% to 87%
69% to 75%
81% to 88%
6
ON
ON
ON
ON
ON
ON
100%
100%
6
ON
ON
ON
ON
ON
ON
92% to 100%
92% to 100%
7
8
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
88%
100%
87%
100%
88%
100%
7
8
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
93% to 100%
95% to 100%
94% to 100%
Advertisement
Table of Contents
