| Вид документа | Бюлетень виробу |
|---|---|
| Виробник | JCI |
| Код документа | single-duct-variable-air-volume-terminal-model-tss-product-bulletin |
| Група обладнання | LN Controller |
| Сторінок | 14 |
| Мова документа | англійська |
| Розмір файлу | 0.6 МБ |
Текст документа
Product Bulletin
Issue Date March 27, 2009
Single Duct Variable Air Volume Terminal (Model TSS)
Model TSS Terminals provide Variable Air Volume
(VAV) control beyond the typical single duct box. They
are specifically designed for precise air delivery
throughout the entire operating range, regardless of
the installed inlet conditions. These units can be
ordered with or without a Direct Digital Controller
(DDC), which can operate as a stand-alone unit, on a
Johnson Controls® N2 trunk, or on a LON trunk.
TSS Terminals take advantage of typical benefits
provided by single duct units while performing at
extremely low sound levels. This is critical in today’s
buildings where occupants are placing more emphasis
on indoor acoustics.
Figure 1: Single Duct Variable Air Volume Terminal
The ability to provide comfort to the occupant is the (Model TSS)
measurement of quality for any VAV terminal. Comfort
is achieved through quiet and precise control of airflow
to the occupied space.
The TSS Terminal is manufactured and assembled
with a multi-point, center-averaging airflow sensor.
This sensor provides a signal to the controller enabling
it to quietly and precisely measure airflow. Accurate
measurement is the basis for airflow control.
Bundled with the TSS Terminal is a digital controller
from the VAV Modular Assembly (VMA) Series or the
LN Series. Each model in the VMA1400 Series and
the LN Series combines a controller, pressure sensor,
and actuator housed in one preassembled unit.
Unique features that reduce installation and
commissioning time while enhancing VAV system
operation make the VMA the product of choice for VAV
systems. Figure 2: VMA1410 and VMA1420
The VMA and LN Series controls can be used in these
types of applications:
• Cooling only
• Cooling with Reheat and/or Exhaust
Note: For more information on the VMA1400 Series,
refer to the Variable Air Volume Modular Assembly
(VMA) 1400 Series Product Bulletin (LIT-635058).
Note: For more information on the LN Series, refer
to the Metasys® System LN Series VAV and VVT Figure 3: LN Series Controller
Profile Application Controllers Product Bulletin
(LIT-1201910).
© 2009 Johnson Controls, Inc. 1
Code No. LIT-1201825 www.johnsoncontrols.com
Features and Benefits
Factory-Provided DDC An integrated VAV box with controls
eliminates the coordination and difficulties
associated with factory mounting
Factory-Commissioned Reduces startup time and lowers risk through
DDC downloading of software, setting of
parameters, addressing, and testing at the
factory
Flexible Design Provides application flexibility, while providing
options that can meet even the most stringent
job requirements
Superior Flow Measuring Provides for lower minimum Cubic Feet per
Minute (cfm) values, which reduces energy
costs and noise while maintaining comfort in
the zone
Integrated Module Includes controller, pressure sensor, and/or
actuator, preassembled to reduce installation
time
Enhanced Actuator Provides a fast response stepper motor that
drives the damper from full open to close in
30 seconds (VMA Series)
Automated Commissioning Uses Proportional Adaptive (P-Adaptive) and
Pattern Recognition Adaptive Control (PRAC)
for continuous loop tuning (VMA Series)
Advanced Diagnostics Offers damper stall detection, starved box
detection, actuator motor duty cycle, VAV box
flow test, and other diagnostics on most
models (VMA Series)
Multiple Network Enables integration into a Building Automation
Communications System (BAS)
Standard Applications Provides proven designs and quick selection
of proper variables to ensure proper operation
Quick Installation Reduces installation time with the low profile
compact design and standard metal hanging
straps
Agency Certified Wired in compliance with all applicable
National Electrical Code (NEC) requirements
and tested in accordance with Air
Conditioning and Refrigeration Institute (ARI)
Standard 880
Easy Maintenance and Requires no periodic maintenance and
Service provides trouble-free operation
2 Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin
Energy Efficiency
Model TSS Terminals
In addition to quiet and accurate temperature control,
Flexibility the building owner benefits from lower operating costs.
The highly amplified velocity pressure signal from the
Selection and Layout inlet sensor allows precise airflow control at low air
The TSS provides flexibility in system design. The velocities.
compact cabinet design and quiet operation give the The sensor’s airfoil shape provides minimal pressure
system designer the versatility to place units directly drop across the terminal. This allows the central fan to
above occupied spaces. It is not necessary to locate run at a lower pressure and with less brake
the unit in the crowded space above a hall or corridor, horsepower.
which reduces lengthy and expensive discharge duct
runs. The sensor ensures accurate control, even when Agency Certification
space constraints do not permit long straight inlet duct
Model TSS Terminals with electronic controls and/or
runs to the terminal.
electric heat are listed with ETL as an assembly and
bear the ETL label.
Sizes
Model TSS Terminals are available in 10 unit sizes to Note: ETL is a mark issued by Intertek Testing
handle airflow capacities between 45 and 8,000 Cubic Services (ITS) ETL SEMKO Division.
Feet per Minute (cfm). TSS Terminals and accessories are wired in
compliance with all applicable NEC requirements and
Convenience tested in accordance with ARI Standard 880.
Quality
Maintenance and Service
All TSS Terminals are thoroughly inspected during
TSS Terminals require no periodic maintenance and
each step of the manufacturing process, including a
provide trouble-free operation. Controls are located on
comprehensive pre-ship inspection, to ensure the
the outside of the unit casing for easy access by
highest quality product available. All TSS Terminals
maintenance personnel.
are packaged to minimize damage during shipment.
Quick Installation
A standard single point electrical main power
connection is provided with all electronic controls and
electrical components located on the same side of the
casing for quick access, adjustment, and
troubleshooting. Installation time is further minimized
due to the availability of factory-calibrated controls and
a low profile, compact design.
The sensor ensures accurate airflow measurement,
regardless of the field installation conditions. A
calibration label and wiring diagram is located on the
terminal for quick reference during startup.
The terminal is constructed to allow installation with
standard metal hanging straps. Optional hanger
brackets for use with all-thread support rods or wire
hangers are also available.
Value and Security
Quality
All metal components are fabricated from G90
galvanized steel. Unlike most manufacturers’
terminals, the TSS is capable of withstanding a
125-hour salt spray test without showing any evidence
of red rust.
Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin 3
Optional Features
Standard Features
Construction
Construction
Optional construction features include:
Standard construction features include:
• 20-gauge G90 galvanized steel construction
• ARI 880 certified and labeled
• 3/4” and 1” insulation
• 22-gauge, G90 galvanized steel casing and valve
• scrim-reinforced, foil-faced insulation meeting
• 1/2" 4 lb.ft3 skin, dual density fiberglass insulation
American Society for Testing and Materials
(mechanically fastened for added security)
(ASTM) C1136 for mold, mildew, and humidity
resistance
Primary Air Valve
Standard primary air valve features include: • 1/2” closed cell insulation
• embossed rigidity rings • double wall construction
• low thermal conductance damper shaft • mounting brackets to accept all thread hanging
rods or wire hangers
• position indicator on external end of damper shaft
• low temperature construction for use in thermal
• mechanical stops for open and closed position storage applications (includes a thermally isolated
• center-averaging airflow sensor primary air inlet and a composite damper shaft)
• brass balancing tees Hot Water Coil
• plenum-rated sensor tubing Optional hot water coil features include:
• coil access plate for cleaning coil
Hot Water Coils
Standard hot water coil features include: Electrical Components
• ARI 410 certified and labeled Optional electrical components include:
• 1-, 2-, 3-, 4-row coils • toggle disconnect switch
• left- or right-hand connections • primary and secondary transformer fusing
• tested at a minimum of 450 psig under water and Electric Heat
rated at 300 psig working pressure at 200°F
Optional electric heat features include:
Electrical Components • proportional Solid State Relay (SSR) heater
Standard electrical components include: control
• cETL listed for safety compliance with • mercury contactors
Underwriters Laboratories Inc.® (UL) 1995 • door interlocking disconnect switches
• National Electrical Manufacturers Association
(NEMA) Type 1 wiring enclosure Controls
Optional controls include:
Electric Heat
• Direct Digital Controls (DDC)
Standard electric heat features include:
• pneumatic controls
• cETL listed as an assembly for safety compliance
• automatic reset primary and back-up secondary
thermal limits
• airflow switch
• single-point power connection
• hinged electrical enclosure door
• fusing per NEC
4 Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin
Factory Commissioning
VMA1400 Series Controllers
Whenever the VMA Series controls are ordered on the
Actuator Enhancements TSS Series, the factory downloads the correct
application into the controller. In addition, the factory
The VMA1410 and 1420 use an actuator with a fast
also sets the Area and K Factor for the size of the box
response stepper motor, which is quiet (<35 dBA) and
on which it is installed. If provided, the factory also
precise (23 K resolution). The stepper motor drives the
sets the minimum/maximum Cubic Feet per Minute
damper from full open to full close in 30 seconds. This
(cfm) and address. Each box is thoroughly tested at
significantly reduces the time to commission and
end-of-line prior to packaging.
balance a VAV terminal box. The stepper motor
quickly and accurately adjusts the damper position in
Automated Commissioning
response to new conditions, minimizing position
hunting and motor runtime. Because the VMA1410 and 1420 perform loop tuning
automatically, there is no need to set proportional
Applications bands and integration terms. There is no need to set
any jumpers or switches. Even network addressing
The VMA1400 Series controllers can be configured for
can be done via software, if desired.
most single duct VAV applications. The VMA1420
requires an additional damper actuator with Differential The VMA1410 and 1420 are configured to detect the
Pressure Transducer (DPT) sensor for supply/exhaust damper end-stops automatically. On power up, the
applications and dual duct applications. actuator drives to both hard stops on the VAV box and
remembers these positions. These automated features
Standard applications for the VMA1410 and 1420
get the system operating quickly.
reside in the Heating, Ventilating, and Air Conditioning
(HVAC) PRO library, which is a section of the Global
Operations Support library. See Table 1 for more LN Series Controllers
detailed application and control options. Also refer to
LN-VAVL-0 and LN-VAVC-0 Controllers
the Variable Air Volume Modular Assembly (VMA)
1400 Series Application Note (LIT-6375125). LN-VAVL-0 and LN-VAVC-0 controllers include an
enclosure with actuator, pressure sensor, eight
Advanced Diagnostics Input/Outputs (I/Os), and LONWORKS® Network
Services (LNS®) plug-in.
The VMA1400 Series has several unique diagnostic
features. Diagnostics include damper stall detection,
Applications
starved box detection, actuator motor duty cycle,
VAV box flow test, and others. The LN-VAVL-0 Series controllers can be configured
for most single duct VAV applications. The LN-VAVC-0
The VMA constantly monitors the space temperature requires an additional damper actuator with Differential
and airflow and generates alarms to alert the operator Pressure Transducer (DPT) sensor for supply/exhaust
of setpoint deviations. The operator can react quickly, applications and dual duct applications.
taking corrective action to get the system back into
desired operation. This ensures occupants better Standard applications for the LN-VAVL-0 and the
comfort control. LN-VAVC-0 reside in the Global Operations Support
library.
Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin 5
Table 1: Applications
Applications Control Options VMA1400 LON
1410 1420 LN-VAVL-0 LN-VAVC-0
System Types Single Duct X X X X
Pressure Independent X X X X
Supply/Exhaust X X
Heating (Terminal Box) Floating 3-Wire Valve Actuator X X X
Proportional Valve Actuator X X X
Normally Open or Normally Closed X X X
Valve
1- to 3-Stage Electric X
Electric Coil SSR Control X X X
Heating (Supplemental) Floating 3-Wire Valve Actuator X X X
Proportional Valve Actuator X X X
Normally Open or Normally Closed X X X
Valve
Single Stage Electric X X X
Cooling (Terminal Box) Stepper Motor Damper Actuator X X
Floating/3-Wire External Damper and Valve X X
(Incremental) Actuator Valve Only X X X
Proportional Actuator External Damper and Valve X X
Lighting On/Off (In Relation to Occupancy X X
Mode)
Modes Occ/Temp X X X X
Occ/Unocc X X X X
6 Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin
Standard Terminal Construction
Accurate Airflow Control Sensor
The air valve features an airflow sensor that has
brought new meaning to airflow control accuracy. The
multi-axis design uses between 12 and 20 sensing
points that sample total pressure at center points
within equal concentric cross-sectional areas,
effectively traversing the air stream in two planes.
Each distinct pressure reading is averaged within the
center chamber before exiting the sensor to the
controlling device.
This sensor adds a new dimension to signal
amplification. Most differential pressure sensors
provide a signal equal to 1.5 times the equivalent
velocity pressure signal. This sensor provides a
Figure 4: Airflow Sensor
differential pressure signal that is 2.5 to 3 times the
equivalent velocity pressure signal. This amplified
signal allows more accurate and stable airflow control
at low airflow capacities. Low airflow control is critical
for indoor air quality, reheat minimization, and the
prevention of overcooling during light loads.
Unlike other sensors, which use a large probe surface
area to achieve signal amplification, this sensor uses
an unprecedented, streamlined design that generates
amplified signals. This streamlined design also
generates less pressure drop and noise.
The VAV schedule should specify the minimum and
maximum airflow setpoints, maximum sound power
levels, and maximum air pressure loss for each
terminal. The specification for the VAV terminal must
detail the required performance of the airflow sensor.
Amplifying the Airflow Sensor Signal Provides for Figure 5: Airflow Sensor in Collar
Lower Minimum Airflow Setpoints
Many VAV controllers require a minimum differential Table 2: Airflow Sensor Features
pressure signal of 0.03 inches wg. The airflow sensor Feature Description
should be able to generate this signal with only 400 to
450 FPM air velocity through the inlet collar. 1 Each pressure input signal is routed to the
center averaging chamber
Conventional airflow sensors without amplification
2 Equal, concentric circular areas (three to
capabilities require approximately 700 FPM to five circles based on size)
generate a 0.03 inches wg signal. If 700 FPM
3 Total pressure measured at the center of
represents a 20% minimum condition, the inlet velocity
each concentric circle (12 to 20 sensing
would be 3500 FPM at the maximum airflow setpoint, points based on size)
resulting in extremely noisy conditions. In addition, the
4 Airfoil-shaped averaging chamber for low-
airflow sensor should generate a differential pressure
pressure loss and noise
range of at least 1-inch wg over the operating range of
the terminal unit. 5 Two-axis low profile design
6 Averaged and amplified differential
pressure output to controlling device
7 Pressure output is routed behind probe to
minimize pressure loss and noise
8 Brass field-pressure measuring tap
Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin 7
Model TSS
The TSS Terminal incorporates many unique features.
Most of these standard features are expensive options
for other manufacturers.
Figure 6: Model TSS – Standard Features Figure 7: Model TSS – Standard Features
(Front View) (Rear View)
Table 3: Model TSS – Standard Features
Feature Description
1 Product label includes tagging, airflow, and electrical information
2 Mechanical lock construction ensures lowest possible casing leakage
3 G90 galvanized steel casing withstands 125-hour salt spray test per ASTM B-117
4 Roll-formed inlet collar with integral stiffening ribs adds strength and rigidity
5 Patented airflow sensor
6 Electrical devices installed within a NEMA Type 1 Enclosure, with single point power connection
7 Units with electronic controls listed with ETL for safety compliance
8 Slip and drive discharge collar for quick field installation
9 Self-lubricating bearing to reduce friction and air leakage
10 Insulation edge covered by metal — no raw edges of insulation exposed to airstream
11 Solid composite damper shaft prevents condensation and breakage
12 Low leakage damper incorporates closed cell foam gasket
13 Mechanically fastened insulation for added security
1/2" thick, 4 lb.ft skin, dual density insulation complying with UL 181 and National Fire Protection
3
14
Association (NFPA) 90A, and ASTM C1071
(not shown) Factory-supplied and installed controls
8 Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin
Model TSS-E Standard Features
Electric Heater Selection
Model TSS-E standard features include:
Model TSS-E • cETL listed as an assembly
• single-point power connection
• primary auto-reset high limit
• secondary high limit
• airflow switch
• hinged control panel
• ni-chrome elements
• primary/secondary power terminations
Figure 8: Model TSS-E – Inlet View • fusing per NEC
• wiring diagram and ETL label
• Available kW increments are as follows:
0.5 to 5.0 kW - .25 kW; 5.0 to 10.0 kW - .50 kW;
Above 10 kW - 1.0 kW
Model TSS-E Optional Features
Model TSS-E optional features include:
• disconnect (toggle or door interlocking)
• Pneumatic Electric (PE) switches
Figure 9: Model TSS-E – Rear Inlet View • mercury and magnetic contactors
Historically, heater elements placed downstream of a • manual reset secondary limit
VAV damper have experienced two major problems:
• proportional control (SSR)
• elements fail prematurely due to hot spots
resulting from an uneven air velocity profile over • 24 volt control transformer
the heater face
• heaters suffer rapid nuisance cycling of the
contactors and elements because the airflow
switch probe is located on the low-pressure
(downstream side) of the VAV damper
Our unique electric heat VAV terminal, the TSS-E,
solves these problems. The heater elements are
located midway between the air inlet and the damper.
This design provides uniform airflow over the face of
the electric heater at all damper positions. Element life
is extended, reducing repair cost and inconvenience.
With the heater elements located on the high-pressure
side of the VAV damper, the airflow pressure switch
receives a reliable pressure signal even at minimum
damper positions. This arrangement provides greater
safety, as well as enhanced reliability.
The TSS-E design permits tremendous flexibility when
selecting kW, voltage, phase, balanced or unbalanced
circuiting and method of control.
Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin 9
Model TSS-E Selection Procedure
With standard heater elements, the maximum capacity
(kW) is obtained by dividing the heating (minimum)
Standard Cubic Feet per Minute (scfm) by 70. In other
words, the terminal must have at least 70 scfm per
kW. In addition, each size terminal has a maximum
allowable kW based upon the specific heater element
configuration (for example, voltage, phase, and
number of steps).
Heaters require a minimum of 0.07" wg downstream
static pressure to ensure proper operation.
Table 4: Selection Equations
Equations
kW = scfm x ΔT x 1.085* *Air density at sea
3413 level - reduce by
0.036 for each 1,000
scfm = kW x 3413 feet of altitude above
ΔT x 1.085 * sea level.
ΔT = kW x 3413
scfm x 1.085*
Figure 11: Electric Heater Pressure Drop
Table 5: Calculating Line Amperage
Equations
Single Phase Amperes = kW x 1,000
Volts
Three Phase Amperes = kW x 1,000
Volts x 1.73
Figure 10: Electric Heat Diagram
The TSS-E uses a unique design that has the electric
heater elements upstream of the air valve, enabling
lower scfm to be used due to an even flow across the
coils. By controlling the air after the coils, the TSS-E
provides more reliable sensing of static pressure in the
duct and longer life of the heating coils.
10 Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin
Model TSS-W Optional Features
Hot Water Coil Selection
Model TSS-W optional features include:
Model TSS-W • low-pressure steam coils
• multi-circuit coils for reduced water pressure drop
• opposite hand water connections
• bottom and top access plates for cleaning
Model TSS-W Selection Procedure
Performance is based on a temperature difference of
125°F between the entering water and the entering air.
For Variable Air Volume Applications, the static
pressure drop must be based on the maximum air
volume.
Table 8 gives correction factors for various entering
Figure 12: Model TSS-W ΔTs (difference between EWT and EAT). Multiply MBH
values obtained from selection tables by the
Table 6: Model TSS-W – Definition of Terms appropriate correction factor to obtain the actual MBH
value. Air and water pressure drop can be read directly
Term Definition
from the selection tables. The LAT and LWT can be
EAT Entering Air Temperature (°F) calculated from the following fundamental formulas:
EWT Entering Water Temperature (°F)
LWT Leaving Water Temperature (°F) Table 7: LAT/LWT Fundamental Formulas
LAT Leaving Air Temperature Formulas
CFM Air Volume (cubic feet per minute) LAT = EAT + BTUH
GPM Water Capacity (Gallons per Minute) 1.085 x cfm
MBH 1,000 BTUH LWT = EWT - BTUH
BTUH Coil Heating Capacity (British Thermal Units 500 x GPM
per Hour)
Model TSS-W Standard Features
Model TSS-W standard features include:
• aluminum fin construction with die-formed spacer
collars for uniform spacing
• mechanically expanded copper tubes leak tested
to 450 psig air pressure and rated at 300 psig
working pressure at 200°F
• male sweat type water connections
• 1-, 2-, 3-, and 4-row configurations
Table 8: Model TSS-W Correction Factors
Entering Water - Air Temperature Differential (ΔT) Correction Factors
ΔT 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Factor 0.15 0.19 0.23 0.27 0.31 0.35 0.39 0.43 0.47 0.51 0.55 0.59 0.63 0.67 0.71
ΔT 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165
Factor 0.75 0.79 0.83 0.88 0.92 0.96 1.00 1.04 1.08 1.13 1.17 1.21 1.25 1.29 1.33
Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin 11
Technical Specifications
VAV Modular Assembly (VMA) 1400 Series
Product Code Number Cooling Only: Cooling w/Reheat
and/or Fan:
Single Unit: AP-VMA1410-0 AP-VMA1420-0
Bulk Pack: AP-VMA1410-0D AP-VMA1420-0D
Buy American: AP-VMA1410-0G AP-VMA1420-0G
Supply Voltage 20-30 VAC at 50 or 60 Hz
Optional Fuse Current 0.6 ampere for VMA1410; 2.0 amperes for a VMA1420
Power Consumption VMA1410/1420: 10 VA maximum (Relay and valve requirements not included.)
Ambient Operating 0 to 50°C (32 to 122°F)
Conditions
Ambient Storage -40 to 70°C (-40 to 158°F)
Conditions
Terminations 6.3 mm (1/4 in.) spade lugs (Communication has screw terminals.)
Serial Interfaces N2 Bus and Zone Bus
N2 Controller Addressing DIP switch set (1-253) Addresses 254 and 255 are reserved. Software addressable with
HVAC PRO software, Release 7.02 or later.
Communications Bus N2 between VMA and the Network Control Module (NCM) or N30.
Zone Bus between VMA and room sensor (8-pin phone jack or wire to spade lugs or
optional plug-on terminals) (Not available when the TE-7720 RF Receiver is applied.)
Mounting One screw (included) mounts the VMA1410/1420 to the VAV box. One screw attaches the
damper shaft to the actuator, 8 mm (5/16 in.) square head set screw with 44 N⋅m
(389.4 lb⋅in.) of axial holding power for up to 13 mm (1/2 in.) round damper shafts. Minimum
damper shaft length is 44.5 mm (1 3/4 in.).
Housing Plastic housing for controller/actuator with UL94-5VB Plenum Flammability Rating
Dimensions (L x W x H) VMA1410/1420: 153 x 102 x 102 mm (6 x 4 x 4 in.)
Actuator Torque 4 N⋅m (35 lb⋅in) minimum (VMA1410/1420 only)
Shipping Weight VMA1410/1420: 13.1 kg (29 lb) for a box of ten, 1.3 kg (2.8 lb) each
Electrical Inputs Analog Inputs:
Nickel, silicon, platinum (1 K ohm), or NTC (2.25 K) RTD room sensors,
1.6 K setpoint potentiometer (2-wire)
Voltage input for 0-10 VDC (humidity or pressure sensor)
Binary Inputs: Dry contacts
Input configurations vary based on model type.
Velocity Pressure Velocity Pressure for 374 Pa (0-1.5 inches wc)
Outputs No outputs on VMA1410 (internal stepper motor)
Binary outputs, 24 VAC triac switched, 25-500 mA loads
Stepper drive, 2 to 767 steps per second (23,000 step resolution) (VMA1410/1420 only)
Analog output, 0-10 VDC @ 10 mA maximum
Standards Compliance CSA 22.2 No. 205, UL 916, UL 94-5VB, FCC Part 15, Subpart B, Class A and B, C-tick
Australia/NZ, AS/NZS 4251.1, CISPR 22, Class B, CE Directive (89/336/EEC, EN50081-1,
EN50082-2) Industrial, IEEE 472, IEEE518, IEEE587 Category A/B, IEC-950, IEC 801-2, -
3, -4, -6, -7, -8, ANSI C62.41 A/B
12 Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin
Metasys System LN Series Variable Air Volume Profile Application Controller
Product Code Number LN-VAVLx-0
Power Requirements Voltage: 24 VAC, ±15%, 50/60 Hz
Typical Consumption: 5 VA
Maximum Consumption: 10 VA
Protection: 5 Ampere removable fuse
Environmental Operating Temperature: 0 to 70°C (32 to 158°F)
Storage Temperature: -20 to 70°C (-4 to 158°F)
Relative Humidity: 0 to 90% Noncondensing
General Standard: LONMARK® Functional Profile VAV #8010
Processor: Neuron® 3150; 8 bits, 10 MHz
Memory: Nonvolatile Flash 64 K (APB application and configuration properties)
Communication: LonTalk® Protocol
Transceiver: TP/FT-10; 78 kbps
Battery (for clock only): Real-time Clock Chip
Enclosure:
Material: PVC, flammable class VO
Dimension: 124 x 226 x 63 mm (4.88 x 8.9 x 2.48 in.)
Weight: 0.835 kg (1.84 lbs)
Safety: CSA and UL Listed
Damper Motor Motor: LM24-Mus
Torque: 4 N⋅m (35 lb⋅in.)
Angle of Rotation: 95° adjustable
Fits shaft diameter: 8.5 to 18.2 mm (5/16 to 3/4 in.)
Power Supply from Controller
Inputs Number: 4 Universal
Digital: Dry Contact
Voltage: 0-10 VC, Accuracy ±0.5%
Current: 4-20 mA with 500 K ohms external resistor, Accuracy: ±0.5%
Resistor:
Thermistor Type 2 10 K ohms
Accuracy: ±0.5°C (±0.9°F)
Resolution: 0.1°C (0.18°F)
Range: -40 to 55°C (-40 to 131°F)
Potentiometer 10 K ohms
Linear 2-point setpoint adjustment
Min/Max linear configuration
Configurable on several points
Input Resolution: 12 bits analog/digital converter
One Differential pressure: Range 125-250-500 Pa (0.5-1-2 inches wc), Accuracy ±3% full
scale
Continued on next page. . .
Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin 13
Metasys System LN Series Variable Air Volume Profile Application Controller (Cont.)
Outputs Number: 4
3 Digital: Triac 24 VAC ±15%, 50/60 Hz, maximum charge 1.0 Ampere, internal or external
supply
1 Tri-mode Analog:
0-10 VDC (linear), PWM or digital 0-12 VDC
60 mA maximum @ 12 VDC (60°C [140°F])
Maximum load: 200 ohms
Auto reset fuse: 60 mA @ 60°C (140°F), 100 mA @ 20°C (68°F)
Analog Output Resolution: 8 bits digital/analog converter
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or
misuse of its products.
Controls Group
507 E. Michigan Street
P.O. Box 423 Published in U.S.A.
Milwaukee, WI 53201 www.johnsoncontrols.com
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