Johnson Controls F4-CVM Manuale utente

F4-CVM VAV Terminal Equipment

Controllers Installation Instructions

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.

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. These 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 Facility Explorer® 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.

Figure 1: F4-CVM3050

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.

Part No. 24-10143-01809 Rev. B

2019-05-17 (barcode for factory use only)

F4-CVM03050-0, F4-CVM03050-0P

*241014301809B*

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

Configuring N2 communications.

The CVM controller can also be installed in a wireless application using anFX- ZFR/ZFR ProWireless

Field Bus Router. To configure these controllers to communicate using the wireless communications

protocol, see Configuring wireless communications.

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 bus

are removable)

• One installation instructions sheet

F4-CVM VAV Terminal Equipment Controllers Installation Instructions2

• One self-drilling No. 10 x 25 mm (1 in.) screw

Materials and special tools needed

• Small, straight-blade screwdriver for securing wires in the terminal blocks

• 8 mm (5/16 in.) wrench or 10 mm (3/8 in.) 12-point socket to tighten the square coupler bolt

• Several shims or washers to mount the CVM

• Power screwdriver, 100 mm (4 in.) extension socket, punch, drill, and 3.5 mm (9/64 in.) drill bits to

mount the CVM

• Pliers to open and close the damper

• Required length of 3.97 mm (5/32 in.) ID pneumatic tubing and barbed fittings

Mounting

Observe the following guidelines when mounting a CVM controller:

• Ensure that the mounting surface can support the CVM and any user-supplied enclosure.

• Mount the CVM on a hard, even surface whenever possible.

• Use shims or washers to mount the CVM securely and evenly on the mounting surface.

• Mount the CVM in an area free of corrosive vapors that matches the ambient conditions specified

in the Technical specifications section.

• Provide sufficient space around the CVM for cable and wire connections and adequate ventilation

through the controller (at least 50 mm [2 in.] on the top, bottom, sides, and front of the

controllers).

• Do not mount the CVM in areas where electromagnetic emissions from other devices or wiring

can interfere with controller communication.

• Avoid mounting the CVM on surfaces with excessive vibration.

Important: When the air supply to the VAV box is below 10°C (50°F), make sure that any

condensation on the VAV box, particularly on the damper shaft, does not enter the CVM

electronics. Mount the CVM vertically above the damper shaft to allow any shaft condensation

to fall away from the controller. Additional measures may be required in some installations.

On panel or enclosure mount applications, observe these additional guidelines:

• Do not install the CVM in an airtight enclosure.

• Mount the CVM so that the enclosure walls do not obstruct cover removal or ventilation through

the controller.

• Mount the CVM so that the power transformer and other devices do not radiate excessive heat to

the controller.

To mount the CVM controllers, complete the following steps:

1. Set all the switches on the equipment controller to their known settings.

3F4-CVM VAV Terminal Equipment Controllers Installation Instructions

2. Place the CVM controller in the proper mounting position on the damper shaft so that the

wiring connections are easily accessible. Make sure the controller base is parallel to the VAV

box (perpendicular to the damper shaft). If needed, use a spacer to offset tipping of the

controller caused by the shaft bushings.

Note: Use the alignment marks to center the captive spacer to ensure sufficient CVM

movement in either direction.

3. Secure the self-drilling No.10 screw through the captive spacer with a power screwdriver and

100mm (4in.) extension socket. Otherwise, use a punch to mark the position of the shoulder

washer, and then drill a hole into the VAV box using a 3.5mm (9/64in.) drill bit. Insert the

mounting screw and tighten against the spacer.

Important: Do not overtighten the screw, or the threads may strip. If mounting to the VAV

box, make sure the screws do not interfere with damper blade movement.

4. Locate the damper position using the typical marking on the end of the damper shaft as

shown in the figure below.

Figure 2: Typical damper end shaft icons

5. Note the direction, clockwise (CW) or counterclockwise (CCW), required to close the damper.

Grasp the damper shaft firmly with pliers, and either manually close the damper for 90° boxes

or manually open the damper for 45° or 60° boxes.

6. Push down and hold the Manual Override button and turn the CVM controller coupler until it

contacts the mechanical end-stop at either the full-closed (90° boxes) or full-open (45° and 60°

boxes) position.

7. If the damper for a 90° box closes CCW, rotate the coupler to the CCW mechanical limit. If the

damper for a 90° box closes CW, rotate the coupler to the CW mechanical limit. The open end-

stop is automatically set for 90° boxes. For 45° and 60° boxes, you must provide hard stops at

both full-closed and full-open damper positions. If you install the CVM controller at the full-

open position, the controller provides the open stop for 45° and 60° boxes. The closed damper

seal provides the full-closed stop.

8. All models are compact in size and are easily installed on VAV boxes. The models have either a

round shaft up to 13 mm in diameter or a 10 mm square shaft. Tighten the square coupler bolt

to the shaft using an 8 mm (5/16 in.) wrench or 10 mm (3/8 in.) 12-point socket. Tighten to 10.5

to 11.5 N·m (95 to 105 lb·in).

9. Loop the pneumatic tubing (supplied by field personnel) to include a trap for condensation.

Attach the needed length of tubing (supplied and installed by field personnel) to the dual port

fitting on the CVM controller and the other ends of the tubing to the pressure transducer in the

VAV box application .

F4-CVM VAV Terminal Equipment Controllers Installation Instructions4

Note: The CVM uses a digital pressure sensor with bidirectional flow operation, which

allows you to connect the high- and low-pressure DP tubes to either barbed fitting on the

CVM controller. You do not need to make a specific high- or low-side connection when you

attach the tubing to the barbed fittings on the CVM.

10. Push the Manual Override button, and turn the actuator coupling manually to ensure that the

actuator can rotate from full-closed to full-open positions without binding.

11. Complete the mounting by rotating the damper to the full-open position.

CAUTION

Risk of Property Damage.

Rotate the damper to the full-open position before starting the air handler. Failure to rotate the damper

to the full-open position may result in damage to the VAV box or ductwork when the air handler is

started.

ATTENTION

Risque de dégâts matériels.

Faire pivoter le registre pour le placer en position d'ouverture complète avant de démarrer l'unité de

traitement d'air. Le non-respect de cette directive risque d'endommager le caisson de l'unité à volume

d'air variable (VAV) ou le réseau de conduites au démarrage de l'unité de traitement d'air.

CVM03050 physical features

The following figure displays the physical features of CVM03050, and the accompanying table

provides a description of the physical features and a reference to further information where

required.

5F4-CVM VAV Terminal Equipment Controllers Installation Instructions

Figure 3: CVM03050 physical features

Table 1: CVM03050 physical features

Callout Physical features: description and references

1Supply Power Terminal Block: Gray terminal; 24 VAC, Class 2 (see Supply power

terminal block)

2 Device Address Rotary Switches (see Setting the device address)

3 Binary Output (BO) Terminal Block: Black terminals; 24 VAC Triacs (see Table 3)

4Configurable Outputs (CO) Terminal Block: Black terminals; can be defined as

Voltage Analog Output (0–10 VDC) or Binary Output (24 VAC Triac) (see Table 3)

5 Dual Port Fitting

6 Manual Override Button (see Mounting)

7 Coupler Bolt

8 Controller Coupler (see Mounting)

Universal Serial Bus (USB) 2.0 Host Type A Port

Note: The USB feature is not currently supported.

F4-CVM VAV Terminal Equipment Controllers Installation Instructions6

Table 1: CVM03050 physical features

Callout Physical features: description and references

Universal Inputs (UI) Terminal Block: White terminal; can be defined as one of the

following (see Table 3):

Voltage Analog Input (0–10 VDC)

Resistive Analog Inputs (0–600k ohm): 0–2k Potentiometer (see Table 3)

RTD: 1k Nickel, 1k Platinum, or A99B SI

NTC: 10K Type L (10K Johnson Controls Type II is equivalent to Type L) or 2.252K Type

Dry Contact Binary Input

11 Sensor Actuator (SA) Bus Terminal Block: Orange terminal (see SA bus terminal

block)

12 Field Controller (FC) Bus Terminal Block: Blue terminal; may also be used for N2

connections, see FC bus terminal block (or N2 protocol as required)

13 EOL (End-of-Line) Switch (see Setting the End-of-Line (EOL) switch)

14 SA Bus Port: RJ-12 6-Pin Modular Jack (see Modular ports)

15 FC Bus Port: RJ-12 6-Pin Modular Jack (see Modular ports)

16 Captive Spacer and Screw

17 LED Status Indicators (see LED status and states )

7F4-CVM VAV Terminal Equipment Controllers Installation Instructions

Wiring

Observe the following guidelines when wiring a CVM controller:

CAUTION

Risk of Electric Shock.

Disconnect the power supply before making electrical connections to avoid electric shock.

ATTENTION

Risque de décharge électrique.

Débrancher l'alimentation avant de réaliser tout raccordement électrique afin d'éviter tout risque de

décharge électrique.

Important: Do not connect supply power to the controller before finishing wiring and

checking all wiring connections. Short circuits or improperly connected wires can result in

damage to the controller and void any warranty.

Important: Do not exceed the controller electrical ratings. Exceeding controller electrical

ratings can result in permanent damage to the controller and void any warranty.

Important: Use copper conductors only. Make all wiring in accordance with local, national,

and regional regulations.

Important: Electrostatic discharge can damage controller components. Use proper

electrostatic discharge precautions during installation, setup, and servicing to avoid damaging

the controller.

For detailed information about configuring and wiring an MS/TP Bus, FC Bus, or SA Bus, refer to

the FX-PC Series Controllers MS/TP Communications Bus Technical Bulletin (LIT-12011670). For detailed

information about wiring an N2 network, refer to the N2 Communications Bus Technical Bulletin

(LIT-636018).

Terminal blocks and bus ports

See CVM03050 physical features for input and output terminal and bus port locations on the

CVM03050 controllers. Observe the following guidelines when wiring a CVM controller.

Input and Output terminal blocks

On the CVM controller models, the input and output terminal blocks are removable. The input

terminals are located on the side of the CVM near the FC and SA terminal blocks. The output

terminal blocks are located on the side of the controller near the power supply. For more

information about I/O terminal functions, requirements, and ratings, see Table 3.

F4-CVM VAV Terminal Equipment Controllers Installation Instructions8

FC bus terminal block (or N2 protocol as required)

The FC Bus terminal block is a blue, removable, 4-terminal plug that fits into a board-mounted pin

header.

Use a 3-wire twisted, shielded cable, as shown in Figure 4, to wire the removable FC Bus terminal

block plugs on the CVM and other controllers in a daisy-chain configuration. For more information

about FC Bus terminal functions, requirements, and ratings, see Table 4.

Figure 4: FC bus terminal block wiring

Note: The Shield terminal (SHLD) on the FC Bus terminal block is isolated and can be used to

connect the cable shields on the bus (Figure 4).

SA bus terminal block

The SA Bus terminal block is an orange, removable, 4-terminal plug with +15 VDC that fits into a

board-mounted jack.

Use a 4-wire twisted, shielded cable, as shown in Figure 5, to wire the removable SA Bus terminal

block plugs on the CVM and other SA Bus devices in a daisy-chain configuration. For more

information about SA Bus terminal functions, requirements, and ratings, see Table 4.

9F4-CVM VAV Terminal Equipment Controllers Installation Instructions

Figure 5: SA bus terminal block wiring

Modular ports

The modular SA and FC bus ports on the face of the CVM (Figure 6) are RJ-12 (6-position) modular

jacks as shown in Figure 6.

The modular SA Bus port provides a connection for the Mobile Access Portal (MAP) Gateway,

VAV Balancing Tool , FX-DIS1710 Local Controller Display, WRZ78xx Series One-to-One Wireless

Transmitter, and NS Series sensors.

Note: The MAP Gateway serves as a replacement for the BTCVT, which is no longer available

for purchase, but continues to be supported.

Figure 6: Pin number assignments for sensor, FC bus, and SA ports on equipment controllers

The modular SA Bus port provides a connection for the MAP Gateway, ATV7003 VAV Balancing Tool ,

FX-DIS1710 Local Controller Display, FX-WRZ78xx Series One-to-One Wireless Transmitter, and NS

Series sensors. The modular FC Bus port provides a connection for the Bluetooth Commissioning

Converter and the FX-ZFR Wireless Router.

F4-CVM VAV Terminal Equipment Controllers Installation Instructions10

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