Orion System Modular VAV/Zone Controller - Manual (Page 3)

Controller Features
Overview
Modular & Non-Modular VAV/Zone Controllers
There are two variations of the VAV/Zone Controller Actuator Packages.
One is referred to as the Modular VAV/Zone Controller Actuator Pack-
age and the other as the Non-Modular VAV/Zone Controller Actuator
Package. This manual is written for the Modular Actuator Package. If
you have the Non-Modular Actuator Package you will need to refer to
the Non-Modular VAV/Zone Controller Actuator Package Technical
Guide, Form No: OR-NMZCAP-TGD. Below is information regarding
the differences between the Modular & Non-Modular products.
Modular VAV/Zone Controller Act. Pkg.
The Modular VAV/Zone Controller Actuator Packages utilize modular
connectors on the VAV/Zone Controller board which connect to a Power/
Comm Board via pre-fabricated cables that have mating modular con-
nectors to provide power & communications to the VAV/Zone Controller
Actuator Package. The following Orion products use this type of com-
munications & power wiring architecture.
OE742-31-VAVZ VAV/Zone Controller
Actuator Package - Pressure Dependent
OE744-31-VAVZ VAV/Zone Controller Actuator Package
Pressure Independent
OE520-XX-M VAV/Zone Round Damper
Assembly - Pressure Dependent
OE521-XX-M VAV/Zone Round Damper Assembly
Pressure Independent
OE736-01 VAV/Zone Rectangular Damper Kit
Non-Modular VAV/Zone Controller Act. Pkg.
The Non-Modular VAV/Zone Controller Actuator Packages all utilize
wiring terminals instead of modular connectors on the VAV/Zone Con-
troller board. The 24 VAC power is supplied from a transformer wired
to the VAV/Zone Controller using standard stranded wire and 2 pole
terminal blocks. The communications wiring is connected between the
other VAV/Zone Controllers, CommLink, MiniLink, HVAC unit control-
ler or other controllers on the local loop by using 2 conductor twisted
pair with shield wire which is connected to the VAV/Zone controllers
via a standard 3 pole terminal block. The following Orion products use
this type of communications & power wiring architecture.
OE742-32-VAVZ N.M. VAV/Zone Controller
Actuator Package - Pressure Dependent
OE744-32-VAVZ N.M. VAV/Zone Controller
Actuator Package
Pressure Independent
OE520-XX-T N.M. VAV/Zone Round Damper
Assembly - Pressure Dependent
OE521-XX-T N.M. .VAV/Zone Round Damper
Assembly - Pressure Independent
OE736-02 N.M VAV/Zone Rectangular Damper
Kit
Features
Modular VAV/Zone Controller Act. Pkg.
The Modular VAV/Zone Controller Actuator Package is used for control-
ling airflow and operation of VAV or Zoning terminal units. The package
contains the VAV/Zone Controller and Actuator mounted and housed in
a plastic enclosure. The VAV/Zone Controller is a programmable digital
controller which allows for program setpoints to be stored in non-volatile
memory. The controller is connected to a room sensor via a modular
cable assembly which monitors space temperature allowing the VAV/
Zone Controller to modulate a damper in response to space temperature,
duct temperature, and airflow requirements in the controlled space.
The Modular VAV/Zone Controller Actuator Package has four integral
modular jacks for connection to the actuator, the airflow sensor (for
pressure independent applications), the room sensor, and the VAV/Zone
Controller Expansion Module via modular cables. Modular connections
are provided for the 24 VDC power and system communications. A
quick connect terminal connector is also supplied for connection of the
Modular Service Tool to facilitate programming of the controller. The
controller has an on-board dip switch provided for board addressing.
The VAV/Zone Controller is provided with two relays for tri-state control
of the damper actuator. All outputs and the relay common are electri-
cally isolated from all other circuitry on the board. All relay outputs are
supplied with transient suppression devices across each set of contacts
to reduce EMI and arcing. The relay output contacts are rated for pilot
duty control of a maximum of 1 Amps @ 24 VAC or 24 VDC. The
actuator connects via a modular cable to the board and provides the
VAV/Zone Controller with feedback monitoring for precise positioning
of the actuator.
OE325-01 Zone Controller Expansion Module
The OE325-01 Zone Controller Expansion Module is used in conjunction
with the Modular VAV/Zone Controller Actuator Package to allow for
control of VAV and Zone terminal units, including series and parallel
fan terminal units with 1, 2 or 3 stages of electric heat, modulating hot
water heat, 2 position hot water heat, SCR electric heat, and/or auxiliary
heat devices.
The OE325-01 Zone Controller Expansion Module connects to the
VAV/Zone Controller board by means of a modular cable provided with
the expansion module. Power is supplied to the board by means of this
modular cable. Screw terminals are provided for connection of field
wiring to the relay and analog outputs.
The relay outputs are N.O. contacts with one common terminal. All
outputs and the relay common are electrically isolated from all other
circuitry on the board. All relay outputs are supplied with transient
suppression devices across each set of contacts to reduce EMI and arcing.
The relay output contacts are rated for pilot duty control of a maximum
of 1 Amps @ 24 VAC or 24 VDC. The analog output provides a 0-10
VDC modulating signal output into a 1K Ohm minimum load.
3 Modular ZCAP Technical Guide
Overview