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Carrier WEATHERMAKER 48/50AJ Operation And Service Manual page 55

Single package large rooftop units with comfortlink version 5.x controls
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UNIT SIZE
HEAT CAPACITY
Low
020-030
High
Low
035-050
High
Low
060
High
Table 70 — Staged Gas Heat Control Steps (Configuration
Heat 1
STAGE
MBB-RLY8
IGC1
0
OFF
1
ON
2
ON
3
ON
4
ON
5
ON
Table 71 — Staged Gas Heat Control Steps (Configuration
Heat 1
STAGE
MBB-RLY8
IGC1
0
OFF
1
ON
2
ON
3
OFF
4
OFF
5
ON
6
ON
7
ON
Table 72 — Staged Gas Heat Control Steps (Configuration
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
Table 69B — Staged Gas Heat — 48A2,A3,A4,A5 Units
UNIT MODEL NO.
POSITION NO. 5
RELAY OUTPUT
Heat 2
Heat 3
MBB-RLY7
SCB-RLY1
MGV1
IGC2
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
ON
RELAY OUTPUT
Heat 2
Heat 3
MBB-RLY7
SCB-RLY1
MGV1
IGC2
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
RELAY OUTPUT
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
Configuration
S
T
S
T
S
T
HEAT
Heat 4
Heat 5
SCB-RLY2
SCB-RLY3
MGV2
IGC3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
HEAT
Heat 4
Heat 5
SCB-RLY2
SCB-RLY3
MGV2
IGC3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
HEAT
Heat 4
Heat 5
SCB-RLY2
SCB-RLY3
MGV2
IGC3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
55
HEAT
SG.CF
HT.ST
ENTRY VALUE
1 = 5 STAGE
2 = 7 STAGE
1 = 5 STAGE
1 = 5 STAGE
4 = 11 STAGE
3 = 9 STAGE
SG.CF
HT.ST = 1)
Heat 6
CAPACITY
SCB-RLY4
MGV3
OFF
OFF
OFF
OFF
OFF
OFF
SG.CT
HT.ST = 2)
Heat 6
CAPACITY
SCB-RLY4
MGV3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
SG.CT
HT.ST = 3)
Heat 6
CAPACITY
SCB-RLY4
MGV3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
%
0
37
50
75
87
100
%
0
25
33
50
67
75
83
100
%
0
25
33
50
58
67
75
83
92
100
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