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66
Table 39 —
Modulating Gas Heat Control Steps (
HT.ST
= 0)
* ON when
Outputs
HEAT
H1.CP
> 54%, OFF when
Outputs
HEAT
H1.CP
< 46%.
Table 40 —
Modulating Gas Heat Control Steps (
HT.ST
= 1)
* ON when
Outputs
HEAT
H1.CP
> 54%, OFF when
Outputs
HEAT
H1.CP
< 46%.
Table 41 —
Modulating Gas Heat Control Steps (
HT.ST
= 2)
* ON when
Outputs
HEAT
H1.CP
> 54%, OFF when
Outputs
HEAT
H1.CP
< 46%.
Table 42 —
Modulating Gas Heat Control Steps (
HT.ST
= 3)
* ON when
Outputs
HEAT
H1.CP
> 54%, OFF when
Outputs
HEAT
H1.CP
< 46%.
STAGE
RELAY OUTPUT
CAPACITY
%
Heat 1
Heat 2
Heat 3
Heat 4
MBB-RLY8
TR1-CR
SCB-RLY1
SCB-RLY2
IGC1
MGV1
IGC2
MGV2
MIN
MAX
0
OFF
OFF
OFF
OFF
0
0
1
ON
OFF/ON*
OFF
OFF
15
50
2
ON
OFF/ON*
ON
OFF
52
88
3
ON
OFF/ON*
ON
ON
65
100
STAGE
RELAY OUTPUT
CAPACITY
%
Heat 1
Heat 2
Heat 3
Heat 4
Heat 5
Heat 6
MBB-RLY8
TR1-CR
SCB-RLY1
SCB-RLY2
SCB-RLY3
SCB-RLY4
IGC1
MGV1
IGC2
MGV2
IGC3
MGV3
MIN
MAX
0
OFF
OFF
OFF
OFF
OFF
OFF
0
0
1
ON
OFF/ON*
OFF
OFF
OFF
OFF
10
33
2
ON
OFF/ON*
ON
OFF
OFF
OFF
35
58
3
ON
OFF/ON*
ON
OFF
ON
OFF
60
83
4
ON
OFF/ON*
ON
ON
ON
ON
76
100
STAGE
RELAY OUTPUT
CAPACITY
%
Heat 1
Heat 2
Heat 3
Heat 4
Heat 5
Heat 6
Heat 7
Heat 8
MBB-RLY8
TR1-CR
SCB-RLY1 SCB-RLY2 SCB-RLY3 SCB-RLY4 MBB-RLY9 MBB-RLY10
IGC1
MGV1
IGC2
MGV2
IGC3
MGV3
IGC4
MGV4
MIN
MAX
0
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
0
0
1
ON
OFF/ON*
OFF
OFF
OFF
OFF
OFF
OFF
7
25
2
ON
OFF/ON*
ON
OFF
OFF
OFF
OFF
OFF
26
44
3
ON
OFF/ON*
ON
OFF
ON
OFF
OFF
OFF
45
63
4
ON
OFF/ON*
ON
OFF
ON
OFF
ON
OFF
64
81
5
ON
OFF/ON*
ON
ON
ON
ON
ON
ON
82
100
STAGE
RELAY OUTPUT
CAPACITY
%
Heat 1
Heat 2
Heat 3
Heat 4
Heat 5
Heat 6
Heat 7
Heat 8
Heat 9
Heat 10
MBB-RLY8 TR1-CR SCB-RLY1 SCB-RLY2 SCB-RLY3 SCB-RLY4 MBB-RLY9 MBB-RLY10 CXB-RLY1 CXB-RLY2
IGC1
MGV1
IGC2
MGV2
IGC3
MGV3
IGC4
MGV4
IGC5
MGV5
MIN MAX
0
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
0
0
1
ON
OFF/ON*
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
6
20
2
ON
OFF/ON*
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
21
35
3
ON
OFF/ON*
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
36
50
4
ON
OFF/ON*
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
51
65
5
ON
OFF/ON*
ON
OFF
ON
OFF
ON
OFF
ON
OFF
66
80
6
ON
OFF/ON*
ON
ON
ON
ON
ON
OFF
ON
OFF
76
90
7
ON
OFF/ON*
ON
ON
ON
ON
ON
ON
ON
ON
86
100
Summary of Contents for WeatherExpert 48N2
Page 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...
Page 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...
Page 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...
Page 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...
Page 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...
Page 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...
Page 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...
Page 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...
Page 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...
Page 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...
Page 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...
Page 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...
Page 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...