M4-CVM VAV Box Controllers Installation Guide
Application
The CVM03050 equipment controllers are designed for
variable air volume (VAV) box applications.
CVM03050 controllers operate on an RS-485 BACnet
®
MS/TP bus as BACnet Advanced Application Controllers
(B-AACs) and integrate into Johnson Controls
®
and
third-party BACnet systems. CVMs feature 14 preloaded
standard applications to allow this controller to operate
standard VAV box equipment with a proven energy-
efficient sequence of operation, without the need for
programming. For information on configuring a CVM
controller to use a preloaded application, see
. CVM controllers are also fully
programmable, using the Controller Configuration Tool
(CCT), providing the flexibility to create custom control
sequences.
CVM03050 controllers feature an integral damper
actuator, a digital Differential Pressure Transmitter (DPT)
sensor, and a 32-bit microprocessor. The CVM03050-0P
model features an integral potentiometer to sense actual
VAV box damper position. For information on configuring
an application with integrated actuator feedback,
refer to the
M4-CVM Actuator Feedback Application Note
(LIT-12013631)
.
CVM03050 controllers also include an integral real-time
clock, which enables the controllers to monitor and
control schedules, calendars, and trends, and operate
for extended periods of time as stand-alone controllers
when offline from the Metasys system network. These
controllers connect easily to the wired and wireless
network sensors for zone and discharge air temperature
sensing. Their small package size facilitates quick
field installation and efficient use of space without
compromising control performance.
Communications protocols
The CVM03050 controllers can communicate using
BACnet MS/TP, N2, or wireless Zigbee
®
. By default, the
CVM controllers communicate using the BACnet MS/TP
protocol. The BACnet protocol is a standard for ANSI,
ASHRAE, and the International Standards Organization
(ISO) for building controls.
The CVM controllers can be used as functional
replacements for legacy N2 controllers. The N2-capable
MS/TP equipment controller models provide a cost-
effective upgrade and modernization path for customers
with existing N2 controllers. For installation and
commissioning support, and tips for efficient and safe
replacement, refer to the
Modernization Guide for Legacy
N2 Controllers (LIT-12012005)
and the controller-specific
documentation. For information about mapping N2
Objects in controllers with switchable communications
protocols, refer to the
N2 Compatibility Options
chapter of
the
Controller Tool Help (LIT-12011147)
.
To configure CVM controllers to communicate using
the N2 communications protocol, see
.
The CVM controller can also be installed in a wireless
application using a ZFR/ZFR Pro Wireless Field Bus Router.
To configure these controllers to communicate using
the wireless communications protocol, see
North American Emissions Compliance
United States
This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful
interference when this equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction
manual, may cause harmful interference to radio
communications. Operation of this equipment in a
residential area may cause harmful interference, in which
case the users will be required to correct the interference
at their own expense.
Canada
This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de la Classe (A) respecte toutes
les exigences du Règlement sur le matériel brouilleur du
Canada.
Installation
Observe the following guidelines when installing a CVM
controller:
• To minimize vibration and shock damage to the
controller, transport the controller in the original
container.
• Verify that all parts shipped with the controller.
• Do not drop the controller or subject it to physical
shock.
Parts included
• One CVM03050 controller with removable terminal
blocks (Input/Output, Power, FC, and SA terminal blocks
bus are removable)
• One installation instructions sheet
• One self-drilling No. 10 x 25 mm (1 in.) screw
*241014301590C*
Part No. 24-10143-01590 Rev. C
2020-10-30
(barcode for factory use only)
M4-CVM03050
