Johnson Controls SMART EQUIPMENT VERASYS VEC100, Quick Start Manual

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Table 4: Changeover bypass wiring diagram
Number Description Object name (if
given)
1 Economizer Damper Output (optional) MAD-O
2 Supply fan output (to fan VFD) SF-O
3 Supply fan command (to fan VFD) SF-C
4 Heating stage 1 command HTG1-C
5 Heating stage 2 command HTG2-C
6 Cooling stage 1 command CLG1-C
7 Cooling stage 2 command CLG2-C
8 Cooling stage 3 command CLG3-C
9 Cooling stage 4 command CLG4-C
10 24 V HOT to damper motor n/a
11 24 V COM to damper motor n/a
12 24 V COM n/a
13 24 V HOT n/a
14 From last device n/a
15 To next device n/a
16 Zone humidity sensor - monitor only (optional) ZN-H
Table 4: Changeover bypass wiring diagram
Number Description Object name (if
given)
17 Return air CO
2
Range: 0 ppm to 2,000 ppm, 0 VDC to 10 VDC
RA-CO2
18 Return air temperature sensor RA-T
19 Outside air temperature sensor
Note: This is a required sensor if the VEC100
controls the economizer. Position the sensor
in a shaded area on the north side of the
building.
OA-T
20 Discharge air static pressure sensor
Range: 0 in. W.C. to 5 in. W.C., 0 VDC to 5 VDC
DA-P
21 Discharge air temperature sensor DA-T
22 Supply fan status (air proving switch, optional) SF-S
23 Purge input (optional) PURGE-S
24 Filter status (optional) FILTER-S
VEC100 Generic RTU Controller, Staged Heating and Staged Cooling Quick Start Guide 5