Johnson Controls METASYS VAV110 Manuale utente
Application Specific Controllers Technical Manual 636.3
VAV Controller Section
Technical Bulletin
Issue Date 0309
©2009 Johnson Controls, Inc. 1
Code No. LIT-6363040
Introduction Page 5
Description 5
OEM Applications 8
Standards Compliance *8
Coordination of Factory Mounted VAV Systems 8
Configuring the Controller 11
Using HVAC PRO for Windows Configuration Tool 11
Defining a VAV Control Device Object in Metasys Software 13
Installation Procedures 17
Tools Needed 17
Environmental Information 17
Mounting the Controller 18
Power Line Wiring Transient Noise Precautions 21
I/O and Communication Lines Wiring Transient Noise Precautions 23
Variable Air Volume (VAV) Controller
* Indicates those sections where changes have occurred since the last printing.
2 VAV Controller—Variable Air Volume (VAV) Controller
Wiring Details Page 25
Power Source and Loads 26
Grounding and Isolation 27
I/O and Communication Terminals 29
Power, Zone Bus, and N2 Connections 36
Analog Inputs 36
Binary Inputs 38
Binary Outputs 38
Analog Outputs 38
Zone Bus 39
Wiring to RLY50/002 Relays 39
Wiring Sensors and Actuators 40
Networking the Controller 45
N2 Bus Overview 45
Installing the N2 Bus 46
Zone Bus Communications 49
Application Examples 51
Single Duct Applications 51
Dual Duct Applications 63
Downloading/Commissioning 71
Via Zone Bus 71
Via N2 Bus 71
Incremental Valve Actuator Stroke Time 72
Incremental Damper Actuator Stroke Time 73
Zone Terminal Setup for Balancing Contractors 73
* Indicates those sections where changes have occurred since the last printing.
VAV Controller—Variable Air Volume (VAV) Controller 3
Troubleshooting Page 75
Hardware Installation Inspection 75
Tools Needed for Troubleshooting 75
Installation Checkout 76
Troubleshooting the VAV Controller with HVAC PRO for Windows 81
Troubleshooting the N2 Bus and Networked VAV Controller 82
Zone Bus Troubleshooting -- HVAC PRO for Windows 83
Ordering Information 85
Johnson Controls Code Numbers 85
Vendor Code Numbers 87
Specifications *89
* Indicates sections where changes occurred since the last printing.
4 VAV Controller—Variable Air Volume (VAV) Controller
VAV Controller—Variable Air Volume (VAV) Controller 5
1 2FIntroduction
The Variable Air Volume (VAV) Controller is an electronic device for
digital control of single duct, dual duct, fan powered, and supply/exhaust
VAV box configurations. See 50HFigure 1. You may use the VAV as a
standalone controller or connected to the Metasysnetwork through a
Network Control Module (NCM) or Companionsystem.
When connected to the Metasys Network, the VAV provides all point and
control information to the rest of the network. The devices communicate
through an N2 Bus.
Each VAV Controller application uses a different sequence of operation,
all of which are covered in the HVAC PRO for Windows User’s Manual
(FAN 637.5).
Description
6 VAV Controller—Variable Air Volume (VAV) Controller
1 2 3 4 5 6
BINARY INANALOGINPUTS BINARY OUTPUTS
BINARY INPUT
ANALOG INPUTS
1 2 3 4 5 6 1 2 3 4
ANALOG INPUTS
COMMON
TO
ZONE
STAT
BINARY OUTPUT
1 2 3 4 5 6 7 8
ZBUS
DSI
P5
P6
1 2 3 4 5 6
BINARY COM
1 2 3 4 5 6
110-111
BINARY IN
ANALOGINPUTS BINARY OUTPUTS
BINARY INPUTANALOGINPUTS
1 2 3 4 5 6 1 2 3 4
ANALOG INPUTS
COMMON
TO
ZONE
STAT
BINARY OUTPUT
1 2 3 4 5 6
Z BUS
DSI
1 2 3 4 5 6
ANA OU
T
ANALOG
OUTPUT
1 2
BINARY COM
R
R
Figure 1: VAV110 (top) and VAV111 (bottom) Controller
VAV Controller—Variable Air Volume (VAV) Controller 7
Table 1: VAV Controller Model Features
Feature VAV100/101
(Discontinued) VAV110/111 VAV140/141
Ambient
Temperature
Rating
32 to 122F
(0 to 50C) 32 to 122F
(0 to 50C) 32 to 122F
(0 to 50C)
Analog Inputs 6
RTD temperature
elements (1000 ohm
nickel, platinum, or
silicon)
2k ohm setpoint
potentiometers
0 to 10 VDC or
0 to 2 VDC
transmitters
6
RTD temperature
elements (1000 ohm
nickel, platinum, or
silicon)
2k ohm setpoint
potentiometers
0 to 10 VDC or
0 to 2 VDC
transmitters
6
RTD temperature
elements (1000 ohm
nickel, platinum, or
silicon)
2k ohm setpoint
potentiometers
0 to 10 VDC or
0 to 2 VDC
transmitters
Binary Inputs 4
(4) Dry contacts
(1) Momentary push
button from zone
sensor for temporary
occupancy mode
BI 4 may be used as
an accumulator input
for frequencies less
than 100 Hz.
4
(4) Dry contacts
(1) Momentary push
button from zone
sensor for temporary
occupancy mode
BI 4 may be used as
an accumulator input
for frequencies less
than 100 Hz.
4
(4) Dry contacts
(1) Momentary push
button from zone
sensor for temporary
occupancy mode
BI 4 may be used as
an accumulator input
for frequencies less
than 100 Hz.
Analog
Outputs 0/2
0 to 10 VDC
@ 10 mA
0/2
0 to 10 VDC
@ 10 mA
0/2
0 to 10 VDC
@ 10 mA
Binary
Outputs 8/6
24 VAC Triacs
@ 0.5 amperes
8/6
24 VAC Triacs
@ 0.5 amperes, or
0.8 amperes if total
power is limited
8/6
24 VAC Triacs
@ 0.5 amperes, or
0.8 amperes if total
power is limited
N2 Bus Not Isolated * Isolated Isolated
Zone Bus Discrete connections
at controller Discrete connections
at controller Discrete connections
at controller
8-pin phone jack on
controller 8-pin phone jack on
controller 8-pin and 6-pin phone
jack on controller *
6-pin phone jack at
zone sensor 6-pin phone jack at
zone sensor 6-pin phone jack at
zone sensor
LED Indication * LED Indication *
24 VAC Power
Terminations Quick Connects
(Spade Lugs) * Removable Screw
Terminal Block Removable Screw
Terminal Block
I/O
Terminations Quick Connects
(Spade Lugs) Quick Connects
(Spade Lugs) Fixed Screw Terminal
Block *
N2
Terminations Fixed Screw Terminal
Block * Removable Screw
Terminal Block Removable Screw
Terminal Block
* VAV Controller model feature differences
8 VAV Controller—Variable Air Volume (VAV) Controller
When providing VAVs for projects which use Traneor TITUS
terminal boxes, consider using the AS-VAVDPTx-1 product (refer to
Building VAVDPT Applications Application Note (LIT-6363042) in the
Application Specific Controllers Technical Manual (FAN 636.3). Trane
and TITUS are both Original Equipment Manufacturers (OEMs) who
provide VAV terminal boxes for projects. Trane typically provides the
damper actuator with their terminal box, and TITUS provides the damper
actuator with their QFPC Series Fan Powered Box. The VAVDPT comes
in two models, which include a VAV Controller and a DPT-2015 Velocity
Pressure Transducer. The DPT is mounted and prewired to the cover of
the VAV. Refer to the OEM Reference Manual (FAN 638).
The VAV Controller complies with the following standards:
zFCC Part 15, Subpart J, Class A
zIEEE 472, IEEE 518
zIEEE 587 Category A
zUL 916 Listed
zVDE 0871 Class B
A factory mounted VAV box control system requires close coordination
between a variety of different disciplines. Refer to the OEM Reference
Manual (FAN 638) for factory manufacturer’s details. Although the
responsibilities may differ per city or region, the following parties are
usually involved on the job:
zcontrols contractor
zmechanical contractor
zlocal VAV box manufacturer’s representative
zbalancing contractor
zelectrical contractor
Typically, the mechanical contractor is the focal point for coordinating the
entire process. The basic responsibilities under the domain of the
mechanical contractor are:
1. Purchasing the VAV box system. Most specifications include the
OEM mounting fees and enclosures for the control system in the
mechanical contractor’s price. Mounting fees vary per box
manufacturer but ranges can be found in the OEM Reference Manual
(FAN 638).
2. Providing the release schedule for the VAV boxes to the job.
3. Contracting, or working closely with, the balancing contractor to
ensure the system is set up per the mechanical prints.
Note: The owner often directly hires the balancing contractor. This
ensures neutrality in dealing with other contractors involved in the
project.
3F4F5FOEM
Applications
6F7F8FStandards
Compliance
9F10F11FCoordination of
Factory
Mounted VAV
Systems
VAV Controller—Variable Air Volume (VAV) Controller 9
In conjunction with the mechanical contractor, the controls contractor’s
responsibilities include:
1. Coordination of the control system release schedule to the box
manufacturer to ensure the mechanical system delivery schedule can
be met. Coordination with the local box manufacturer representative is
normally required.
2. Coordination with the electrical contractor to ensure the following
steps are covered.
z24 VAC power is provided at each VAV Controller.
zN2 Bus wiring is pulled and terminated.
zValve actuator wiring is pulled and terminated.
zZone sensor cables are pulled. The use of phone cable for
terminating zone sensor wiring allows basically anyone to
terminate zone sensors in certain locales.
zIf desired, the N2 address switches can be set by the electrical
contractor.
3. Initial loading of the HVAC PRO for Windowsconfiguration files is
done once the electrical contractor’s functions are completed in
preparation for the final system balancing.
4. Training of the balancing contractor to ensure the balancing contractor
knows how to use the Zone Terminal (ZT) or HVAC PRO for
Windows Commissioning mode so they can perform the final system
balancing.
5. Mounting and terminating the cable connections for the zone
temperature sensor. Set the N2 address switch if the electrical
contractor was not contracted to perform this function.
6. Configuring, downloading, and commissioning the controller.
10 VAV Controller—Variable Air Volume Controller
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