121
Table 106 — Controls Expansion Board (CEM) Inputs
POINT
NAME
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S)
PORT STATE
INPUTS
SFS
Supply Fan Status switch
DI 1
J7, 1-2
2
0 = 24vac, 1= 0vac
DMD_SW1
Demand Limit - SW1
DI 2
J7, 3-4
4
0 = 24vac, 1= 0vac
DMD_SW2/
DHD ISCIN
Demand Limit - SW2/
Dehumidification Switch Input
DI 3
J7, 5-6
6
0 = 24vac, 1= 0vac
PRES
Pressurization
DI 4
J7, 7-8
8
0 = 24vac, 1= 0vac
EVAC
Evacuation
DI 5
J7, 9-10
10
0 = 24vac, 1= 0vac
PURG
Purge
DI 6
J7, 11-12
12
0 = 24vac, 1= 0vac
IAQIN
Indoor Air Quality Switch
DI 7
J7, 13-14
14
0 = 24vac, 1= 0vac
AN7
J6, 1-3
2 (1 = loop power)
(0-20mA input)
DMDLMTMA
4-20mA Demand Limit
AN8
J6, 4-6
5 (4 = loop power)
(0-20mA input)
EDTRESMA
4-20mA Evaporator Discharge SP Reset
AN9
J6, 7-9
8 (7 = loop power)
(0-20mA input)
OAQ
Outside Air CO
2
Sensor
AN10
J6, 10-12
11 (10 = loop power)
(0-20mA input)
SPRESET
SP Reset milliamps
AN10
J6, 10-12
11 (10 = loop power)
(0-20mA input)
CEM_10K1/
CEM_4201
CEM AN1 10k temp J5,1-2/
CEM AN1 4-20 ma J5,1-2
AN1
J5, 1-2
1
(thermistor, ohms)
CEM_10K2/
CEM_4202
CEM AN2 10k temp J5,3-4/
CEM AN2 4-20 ma J5,3-4
AN2
J5, 3-4
3
(thermistor, ohms)
CEM_10K3/
CEM_4203
CEM AN3 10k temp J5,5-6/
CEM AN3 4-20 ma J5,5-6
AN3
J5, 5-6
5
(thermistor, ohms)
CEM_10K4/
CEM_4204
CEM AN4 10k temp J5,7-8/
CEM AN4 4-20 ma J5,7-8
AN4
J5, 7-8
7
(thermistor, ohms)
AN5
J5, 9-10
9
(thermistor, ohms)
AN6
J5, 11-12
11
(thermistor, ohms)
CEBD430351
TEST
1
CEPL130351-01
PWR
TEST 2
J1
J2
J4
J3
J5
J6
J7
LEN
STATUS
RED LED - STATUS
GREEN LED -
LEN (LOCAL EQUIPMENT NETWORK)
ADDRESS
DIP SWITCH (ALL ON)
Fig. 32 — Controls Expansion Board (CEM)
A48-7708
Summary of Contents for Carrier Weathermaker 48A2
Page 105: ...105 Fig 20 Typical Main Control Box Wiring Schematic 48 50A2 A3 A4 A5 Units...
Page 106: ...106 Fig 21 Typical Auxiliary Control Box Wiring Schematic...
Page 107: ...107 Fig 22 Typical 2 Stage Gas Heat Wiring Schematic Size 060 Units Shown a48 8357...
Page 108: ...108 TO NEXT PAGE Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown A48 7296...
Page 109: ...109 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown cont A48 8358...
Page 110: ...110 Fig 24 Typical Electric Heat Control Schematic 50 Series Size 060 Units Shown a50 8228...
Page 111: ...111 Fig 25 Typical Power Schematic 48 50A2 A3 A4 A5 060 Unit Shown...
Page 112: ...112 Fig 26 Typical Low Ambient Controls Option Wiring...
Page 113: ...113 Fig 27 Typical Small Chassis Component Location Size 020 035 Units...
Page 114: ...114 Fig 28 Typical Large Chassis Component Locations Size 040 060 Units...
Page 118: ...118 Fig 30 Economizer Control Board ECB1 and VAV Control Board ECB2 A48 7706...
Page 142: ...142 A48 3733 Fig 56 Main Burner Removal...
Page 176: ...176 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716...
