VEC100 Generic RTU Controller, Staged Heating
and Staged Cooling Quick Start Guide
About this guide
This quick start guide provides the basic information you
need to configure and install the Verasys
®
Equipment
Controller (VEC), LC-VEC100-0, using the Verasys generic
rooftop unit (RTU) staged heating and staged cooling
controller application. The application controls a third-
party changeover bypass (COBP) system or a third-party
variable air volume (VAV) unit.
For further information, refer to the
Verasys Equipment
Controller (VEC) Installation Guide (24-10143-1272)
and the
VEC100 Generic RTU Controller, Staged Heating and Staged
Cooling Application Note (12013443)
.
Table 1: Application features
Options available Possible values
Number of Heating
Stages Installed
0 to 2
Number of Cooling
Stages Installed
0 to 4
Economizer
Installed
•
State 0: the economizer is not
available.
•
State 1: the economizer is available.
Air Proving Switch
Setup
•
State 0: fan status device
•
State 1: duct static pressure sensor
•
State 2: none
Rooftop Controller
Type
•
State 0: changeover bypass
•
State 1: VAV
Cancel ASCD Timers •
State 0: false
•
State 1: true
Demand Ventilation
Feature
•
State 0: demand ventilation is off.
•
State 1: demand ventilation is on.
Mounting the controller
To mount the controller, complete the following steps:
1. Mount a 20 cm (8 in.) section of 35 mm (1.3 in.) DIN
rail horizontally.
Note:
Mount the controller in the horizontal
position.
2. On the back of the controller, extend the two
mounting clips.
Figure 1: Pull down lower mounting clips
3. Place the controller on the DIN rail.
4. Push the bottom mounting clips inward (up) to
secure the controller on the DIN rail.
Figure 2: Push up lower mounting clips
Wiring the controller
Zone bus terminal block
The zone bus terminal block is a grey, removable, 4-
terminal plug that fits into a board-mounted jack. Wire the
removable zone bus terminal block plugs on the controller
on the top row of the stacked connector, and other field
controllers in a daisy-chain configuration using 3-wire
twisted, shielded cable as shown in the following figure.
LIT-12013486
2021-07-14
LC-VEC100-0
