109
Table 107 — Economizer Control Board (ECB1) Inputs and Outputs
POINT
NAME
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S)
PORT STATE
INPUTS
RMTIN
Remote occupancy
DI1
J4, 1-2
2
24VAC = 1, 0VAC = 0
ECONENBL,
ECOORIDE
Economizer enable
DI2
J4, 3-4
4
24VAC = 1, 0VAC = 0
RARH
Return air relative humidity
AN1
J5, 1-3
1=24VDC, 2=0-20mA in, 3=GND
0-20mA
OARH
Outdoor air relative humidity
AN2
J5, 4-6
4=24VDC, 5=0-20mA in, 6=GND
0-20mA
OUTPUTS
ECONOCMD
Economizer actuator
(analog control)
AO1
J9, 1-2
1=0-20mA, 2=GND
0-20mA OUT
ECONOCMD
Economizer actuator
(digital control)
PP/MP
J7, 1-3
1=PP/MP Data, 2=24VAC, 3=GND
Belimo PP/MP Protocol
PE_A
Power Exhaust stage A
RLY1
J8, 1-3
1 = 2 = RLY1A, 3 = RLY1B
1 = Closes RLY1A/RLY1B
PE_B
Power Exhaust stage B
RLY 2
J8, 4-6
4 =5 = RLY2A, 6 = RLY2B
1 = Closes RLY2A/RLY2B
PE_C
Power Exhaust stage C
RLY 3
J8, 7-9
7 = 8 = RLY3A, 9 = RLY3B
1 = Closes RLY3A/RLY3B
ECON_PWR
Economizer Power
RLY 6
J8, 16-18
16 = 17 = RLY6A, 18 = RLY6B
1 = Closes RLY6A/RLY6B
Fig. 23 — Economizer Control Board (ECB1) and VAV Control Board (ECB2)
A48-7706
Summary of Contents for WEATHERMAKER 48AJ020
Page 95: ...95 Fig 13 Typical Main Control Box Wiring Schematic A48 7787 ...
Page 96: ...96 TO NEXT PAGE Fig 14 Auxiliary Control Box Wiring Schematic A48 7294 ...
Page 98: ...98 Fig 15 Typical 2 Stage Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 6866 ...
Page 102: ...102 TO NEXT PAGE Fig 18 Typical Power Schematic Size 051 and 060 Units Shown A48 7298 ...
Page 104: ...104 Fig 19 Controls Option Wiring Schematic A48 7810 ...
Page 105: ...105 Fig 20 Small Chassis Component Location Size 020 035 Units A48 7301 ...
Page 106: ...106 Fig 21 Large Chassis Component Locations Size 036 060 Units A48 7302 ...