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Carrier Weathermaster 48P030-100 Controls, Start-Up, Operation, Service, And Troubleshooting page 69

Single package large rooftop units with comfortlink version 9.x controls
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Heat 1
STAGE
MBB-RLY8
IGC1
0
OFF
1
ON
2
ON
Heat 1
STAGE
MBB-RLY8
IGC1
0
OFF
1
ON
2
ON
3
ON
4
ON
5
ON
Heat 1
STAGE
MBB-RLY8
IGC1
0
OFF
1
ON
2
ON
3
ON
4
ON
5
ON
6
ON
7
ON
8
ON
9
ON
Heat 1
STAGE
MBB-RLY8
IGC2
0
OFF
1
ON
NOTE(S):
a. ON when Outputs
HEAT
H1.CP > 54%, OFF when Outputs
Heat 1
STAGE
MBB-RLY8
IGC2
0
OFF
1
ON
2
ON
3
ON
NOTE(S):
a. ON when Outputs
HEAT
H1.CP > 54%, OFF when Outputs
Heat 1
STAGE
MBB-RLY8
IGC2
0
OFF
1
ON
2
ON
3
ON
4
ON
5
ON
6
ON
NOTE(S):
a. ON when Outputs
HEAT
H1.CP > 54%, OFF when Outputs
Table 49 — Staged Gas Heat Control Steps (HT.ST = 0)
Heat 2
Heat 3
MBB-RLY7
SCB-RLY1
MGV1
IGC2
OFF
OFF
OFF
OFF
ON
OFF
Table 50 — Staged Gas Heat Control Steps (HT.ST = 1)
Heat 2
Heat 3
MBB-RLY7
SCB-RLY1
MGV1
IGC2
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
ON
Table 51 — Staged Gas Heat Control Steps (HT.ST = 2)
Heat 2
Heat 3
MBB-RLY7
SCB-RLY1
MGV1
IGC2
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
Table 52 — Modulating Gas Heat Control Steps (HT.ST = 3)
RELAY OUTPUT
Heat 2
Heat 3
TR1-CR
SCB-RLY1
MGV2
IGC1
OFF
OFF
OFF/ON
a
OFF
HEAT
Table 53 — Modulating Gas Heat Control Steps (HT.ST = 4)
RELAY OUTPUT
Heat 2
Heat 3
TR1-CR
SCB-RLY1
MGV2
IGC1
OFF
OFF
OFF/ON
a
OFF
OFF/ON
a
ON
OFF/ON
a
ON
HEAT
Table 54 — Modulating Gas Heat Control Steps (HT.ST = 5)
RELAY OUTPUT
Heat 2
Heat 3
TR1-CR
SCB-RLY1
MGV2
IGC1
OFF
OFF
OFF/ON
OFF
a
OFF/ON
ON
a
OFF/ON
a
ON
OFF/ON
a
ON
OFF/ON
a
ON
OFF/ON
a
ON
HEAT
RELAY OUTPUT
Heat 4
SCB-RLY2
SCB-RLY3
MGV2
OFF
OFF
OFF
RELAY OUTPUT
Heat 4
SCB-RLY2
SCB-RLY3
MGV2
OFF
OFF
OFF
OFF
OFF
ON
RELAY OUTPUT
Heat 4
SCB-RLY2
SCB-RLY3
MGV2
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
ON
Heat 4
Heat 5
SCB-RLY2
SCB-RLY3
MGV1
IGC3
OFF
OFF
OFF
OFF
H1.CP < 46%.
Heat 4
Heat 5
SCB-RLY2
SCB-RLY3
MGV1
IGC3
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
H1.CP < 46%.
Heat 4
Heat 5
SCB-RLY2
SCB-RLY3
MGV1
IGC3
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
ON
H1.CP < 46%.
69
Heat 5
Heat 6
SCB-RLY4
IGC3
MGV3
OFF
OFF
OFF
OFF
OFF
OFF
Heat 5
Heat 6
SCB-RLY4
IGC3
MGV3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Heat 5
Heat 6
SCB-RLY4
IGC3
MGV3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
Heat 6
SCB-RLY4
MGV3
MIN
OFF
OFF
28
Heat 6
SCB-RLY4
MGV3
MIN
OFF
OFF
14
OFF
52
OFF
64
Heat 6
SCB-RLY4
MGV3
MIN
OFF
OFF
OFF
34
OFF
43
OFF
59
OFF
68
ON
76
CAPACITY
%
0
75
100
CAPACITY
%
0
37
50
75
87
100
CAPACITY
%
0
25
33
50
58
67
75
83
92
100
CAPACITY
%
MAX
0
0
100
CAPACITY
%
MAX
0
0
50
88
100
CAPACITY
%
MAX
0
0
9
33
58
67
83
92
100

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