Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 66
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 (8 pages)
Table of Contents
Advertisement
STAGE
MBB-RLY8
0
1
2
3
* ON when Outputs
HEAT
Heat 1
STAGE
MBB-RLY8
IGC1
0
OFF
1
ON
2
ON
3
ON
4
ON
* ON when Outputs
HEAT
Heat 1
Heat 2
STAGE
MBB-RLY8
TR1-CR
IGC1
MGV1
0
OFF
1
ON
OFF/ON*
2
ON
OFF/ON*
3
ON
OFF/ON*
4
ON
OFF/ON*
5
ON
OFF/ON*
* ON when Outputs
HEAT
Heat 1
Heat 2
STAGE
MBB-RLY8 TR1-CR SCB-RLY1 SCB-RLY2 SCB-RLY3 SCB-RLY4 MBB-RLY9 MBB-RLY10 CXB-RLY1 CXB-RLY2
IGC1
MGV1
0
OFF
OFF
1
ON
OFF/ON*
2
ON
OFF/ON*
3
ON
OFF/ON*
4
ON
OFF/ON*
5
ON
OFF/ON*
6
ON
OFF/ON*
7
ON
OFF/ON*
* ON when Outputs
HEAT
Table 39 — Modulating Gas Heat Control Steps (HT.ST = 0)
RELAY OUTPUT
Heat 1
Heat 2
TR1-CR
IGC1
MGV1
OFF
OFF
ON
OFF/ON*
ON
OFF/ON*
ON
OFF/ON*
H1.CP > 54%, OFF when Outputs
Table 40 — Modulating Gas Heat Control Steps (HT.ST = 1)
RELAY OUTPUT
Heat 2
Heat 3
TR1-CR
SCB-RLY1
MGV1
IGC2
OFF
OFF
OFF/ON*
OFF
OFF/ON*
ON
OFF/ON*
ON
OFF/ON*
ON
H1.CP > 54%, OFF when Outputs
Table 41 — Modulating Gas Heat Control Steps (HT.ST = 2)
RELAY OUTPUT
Heat 3
Heat 4
SCB-RLY1
SCB-RLY2
IGC2
MGV2
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
H1.CP > 54%, OFF when Outputs
Table 42 — Modulating Gas Heat Control Steps (HT.ST = 3)
Heat 3
Heat 4
Heat 5
IGC2
MGV2
IGC3
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
H1.CP > 54%, OFF when Outputs
Heat 3
SCB-RLY1
IGC2
OFF
OFF
ON
ON
HEAT
H1.CP < 46%.
Heat 4
Heat 5
SCB-RLY2
SCB-RLY3
MGV2
OFF
OFF
OFF
OFF
ON
HEAT
H1.CP < 46%.
Heat 5
Heat 6
SCB-RLY3
SCB-RLY4
IGC3
MGV3
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
ON
HEAT
H1.CP < 46%.
RELAY OUTPUT
Heat 6
Heat 7
MGV3
IGC4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
ON
OFF
ON
ON
ON
ON
ON
ON
ON
HEAT
H1.CP < 46%.
66
Heat 4
SCB-RLY2
MGV2
MIN
OFF
0
OFF
15
OFF
52
ON
65
Heat 6
SCB-RLY4
IGC3
MGV3
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
Heat 7
Heat 8
MBB-RLY9 MBB-RLY10
IGC4
MGV4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
Heat 8
Heat 9
Heat 10
MGV4
IGC5
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
ON
CAPACITY
%
MAX
0
50
88
100
CAPACITY
%
MIN
MAX
0
0
10
33
35
58
60
83
76
100
CAPACITY
%
MIN
MAX
0
0
7
25
26
44
45
63
64
81
82
100
CAPACITY
%
MGV5
MIN MAX
OFF
0
0
OFF
6
20
OFF
21
35
OFF
36
50
OFF
51
65
OFF
66
80
OFF
76
90
ON
86
100
Advertisement
Table of Contents
