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 todays
buildings where occupants are placing more emphasis
on indoor acoustics.
The ability to provide comfort to the occupant is the
measurement of quality for any VAV terminal. Comfort
is achieved through quiet and precise control of airflow
to the occupied space.

Figure 1: Single Duct Variable Air Volume Terminal

(Model TSS)

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
Profile Application Controllers Product Bulletin
(LIT-1201910).
2009 Johnson Controls, Inc.
Code No. LIT-1201825

Figure 3: LN Series Controller

1
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
DDC

Reduces startup time and lowers risk through

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
Communications

Enables integration into a Building Automation

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

Service

Requires no periodic maintenance and

provides trouble-free operation

Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin

Model TSS Terminals

Flexibility
Selection and Layout
The TSS provides flexibility in system design. The
compact cabinet design and quiet operation give the
system designer the versatility to place units directly
above occupied spaces. It is not necessary to locate
the unit in the crowded space above a hall or corridor,
which reduces lengthy and expensive discharge duct
runs. The sensor ensures accurate control, even when
space constraints do not permit long straight inlet duct
runs to the terminal.
Sizes
Model TSS Terminals are available in 10 unit sizes to
handle airflow capacities between 45 and 8,000 Cubic
Feet per Minute (cfm).
Convenience
Quality
All TSS Terminals are thoroughly inspected during
each step of the manufacturing process, including a
comprehensive pre-ship inspection, to ensure the
highest quality product available. All TSS Terminals
are packaged to minimize damage during shipment.

Energy Efficiency
In addition to quiet and accurate temperature control,
the building owner benefits from lower operating costs.
The highly amplified velocity pressure signal from the
inlet sensor allows precise airflow control at low air
velocities.
The sensors airfoil shape provides minimal pressure
drop across the terminal. This allows the central fan to
run at a lower pressure and with less brake
horsepower.
Agency Certification
Model TSS Terminals with electronic controls and/or
electric heat are listed with ETL as an assembly and
bear the ETL label.
Note: ETL is a mark issued by Intertek Testing
Services (ITS) ETL SEMKO Division.
TSS Terminals and accessories are wired in
compliance with all applicable NEC requirements and
tested in accordance with ARI Standard 880.
Maintenance and Service
TSS Terminals require no periodic maintenance and
provide trouble-free operation. Controls are located on
the outside of the unit casing for easy access by
maintenance personnel.

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

Standard Features
Construction
Standard construction features include:

Optional Features
Construction
Optional construction features include:

20-gauge G90 galvanized steel construction

3/4 and 1 insulation

Primary Air Valve

Standard primary air valve features include:

scrim-reinforced, foil-faced insulation meeting

American Society for Testing and Materials
(ASTM) C1136 for mold, mildew, and humidity
resistance

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

mechanical stops for open and closed position

center-averaging airflow sensor

low temperature construction for use in thermal

storage applications (includes a thermally isolated
primary air inlet and a composite damper shaft)

brass balancing tees

plenum-rated sensor tubing

ARI 880 certified and labeled

22-gauge, G90 galvanized steel casing and valve

1/2" 4 lb.ft3 skin, dual density fiberglass insulation

(mechanically fastened for added security)

Hot Water Coils

Standard hot water coil features include:

Hot Water Coil

Optional hot water coil features include:

coil access plate for cleaning coil

ARI 410 certified and labeled

Electrical Components
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

rated at 300 psig working pressure at 200F

Electric Heat
Optional electric heat features include:

Electrical Components
Standard electrical components include:

proportional Solid State Relay (SSR) heater

control

mercury contactors

door interlocking disconnect switches

cETL listed for safety compliance with

Underwriters Laboratories Inc. (UL) 1995
National Electrical Manufacturers Association
(NEMA) Type 1 wiring enclosure

Electric Heat
Standard electric heat features include:

Controls
Optional controls include:

Direct Digital Controls (DDC)

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

Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin

VMA1400 Series Controllers

Actuator Enhancements
The VMA1410 and 1420 use an actuator with a fast
response stepper motor, which is quiet (<35 dBA) and
precise (23 K resolution). The stepper motor drives the
damper from full open to full close in 30 seconds. This
significantly reduces the time to commission and
balance a VAV terminal box. The stepper motor
quickly and accurately adjusts the damper position in
response to new conditions, minimizing position
hunting and motor runtime.
Applications
The VMA1400 Series controllers can be configured for
most single duct VAV applications. The VMA1420
requires an additional damper actuator with Differential
Pressure Transducer (DPT) sensor for supply/exhaust
applications and dual duct applications.
Standard applications for the VMA1410 and 1420
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
detailed application and control options. Also refer to
the Variable Air Volume Modular Assembly (VMA)
1400 Series Application Note (LIT-6375125).
Advanced Diagnostics
The VMA1400 Series has several unique diagnostic
features. Diagnostics include damper stall detection,
starved box detection, actuator motor duty cycle,
VAV box flow test, and others.
The VMA constantly monitors the space temperature
and airflow and generates alarms to alert the operator
of setpoint deviations. The operator can react quickly,
taking corrective action to get the system back into
desired operation. This ensures occupants better
comfort control.

Factory Commissioning
Whenever the VMA Series controls are ordered on the
TSS Series, the factory downloads the correct
application into the controller. In addition, the factory
also sets the Area and K Factor for the size of the box
on which it is installed. If provided, the factory also
sets the minimum/maximum Cubic Feet per Minute
(cfm) and address. Each box is thoroughly tested at
end-of-line prior to packaging.
Automated Commissioning
Because the VMA1410 and 1420 perform loop tuning
automatically, there is no need to set proportional
bands and integration terms. There is no need to set
any jumpers or switches. Even network addressing
can be done via software, if desired.
The VMA1410 and 1420 are configured to detect the
damper end-stops automatically. On power up, the
actuator drives to both hard stops on the VAV box and
remembers these positions. These automated features
get the system operating quickly.

LN Series Controllers
LN-VAVL-0 and LN-VAVC-0 Controllers
LN-VAVL-0 and LN-VAVC-0 controllers include an
enclosure with actuator, pressure sensor, eight
Input/Outputs (I/Os), and LONWORKS Network
Services (LNS) plug-in.
Applications
The LN-VAVL-0 Series controllers can be configured
for most single duct VAV applications. The LN-VAVC-0
requires an additional damper actuator with Differential
Pressure Transducer (DPT) sensor for supply/exhaust
applications and dual duct applications.
Standard applications for the LN-VAVL-0 and the
LN-VAVC-0 reside in the Global Operations Support
library.

Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin

Table 1: Applications
VMA1400

LON

Applications

Control Options

1410

1420

LN-VAVL-0

LN-VAVC-0

System Types

Single Duct

Pressure Independent
Supply/Exhaust

X
X

X
X

Floating 3-Wire Valve Actuator

Proportional Valve Actuator
Normally Open or Normally Closed
Valve
1- to 3-Stage Electric
Electric Coil SSR Control

X
X
X

X
X
X

X
X
X

X
X

Heating (Supplemental)

Floating 3-Wire Valve Actuator

Proportional Valve Actuator
Normally Open or Normally Closed
Valve
Single Stage Electric

X
X
X

X
X
X

X
X
X

Cooling (Terminal Box)

Stepper Motor Damper Actuator

Floating/3-Wire
(Incremental) Actuator

External Damper and Valve

Valve Only

Proportional Actuator

External Damper and Valve

Lighting

On/Off (In Relation to Occupancy

Mode)

Modes

Occ/Temp
Occ/Unocc

Heating (Terminal Box)

X
X

Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin

X
X

X
X

X
X

X
X

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
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.

Figure 4: Airflow Sensor

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
Lower Minimum Airflow Setpoints
Many VAV controllers require a minimum differential
pressure signal of 0.03 inches wg. The airflow sensor
should be able to generate this signal with only 400 to
450 FPM air velocity through the inlet collar.
Conventional airflow sensors without amplification
capabilities require approximately 700 FPM to
generate a 0.03 inches wg signal. If 700 FPM
represents a 20% minimum condition, the inlet velocity
would be 3500 FPM at the maximum airflow setpoint,
resulting in extremely noisy conditions. In addition, the
airflow sensor should generate a differential pressure
range of at least 1-inch wg over the operating range of
the terminal unit.

Figure 5: Airflow Sensor in Collar

Table 2: Airflow Sensor Features
Feature

Description

Each pressure input signal is routed to the

center averaging chamber

Equal, concentric circular areas (three to

five circles based on size)

Total pressure measured at the center of

each concentric circle (12 to 20 sensing
points based on size)

Airfoil-shaped averaging chamber for lowpressure loss and noise

Two-axis low profile design

Averaged and amplified differential

pressure output to controlling device

Pressure output is routed behind probe to

minimize pressure loss and noise

Brass field-pressure measuring tap

Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin

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

(Front View)

Figure 7: Model TSS Standard Features

(Rear View)

Table 3: Model TSS Standard Features

Feature
1

Product label includes tagging, airflow, and electrical information

Mechanical lock construction ensures lowest possible casing leakage

G90 galvanized steel casing withstands 125-hour salt spray test per ASTM B-117

Roll-formed inlet collar with integral stiffening ribs adds strength and rigidity

Patented airflow sensor

Electrical devices installed within a NEMA Type 1 Enclosure, with single point power connection

Units with electronic controls listed with ETL for safety compliance

Slip and drive discharge collar for quick field installation

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

3
1/2" thick, 4 lb.ft skin, dual density insulation complying with UL 181 and National Fire Protection
Association (NFPA) 90A, and ASTM C1071

14
(not shown)

Description

Factory-supplied and installed controls

Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin

Electric Heater Selection

Model TSS-E Standard Features

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

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

Figure 8: Model TSS-E Inlet View

Model TSS-E Optional Features

Model TSS-E optional features include:

Figure 9: Model TSS-E Rear Inlet View

Historically, heater elements placed downstream of a
VAV damper have experienced two major problems:

elements fail prematurely due to hot spots

resulting from an uneven air velocity profile over
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

disconnect (toggle or door interlocking)

Pneumatic Electric (PE) switches

mercury and magnetic contactors

manual reset secondary limit

proportional control (SSR)

24 volt control transformer

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

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 T x 1.085*
3413

scfm

= kW x 3413
T x 1.085 *

= kW x 3413
scfm x 1.085*

*Air density at sea

level - reduce by
0.036 for each 1,000
feet of altitude above
sea level.

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

Hot Water Coil Selection

Model TSS-W Optional Features

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
125F 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
Ts (difference between EWT and EAT). Multiply MBH
values obtained from selection tables by the
appropriate correction factor to obtain the actual MBH
value. Air and water pressure drop can be read directly
from the selection tables. The LAT and LWT can be
calculated from the following fundamental formulas:

Figure 12: Model TSS-W

Table 6: Model TSS-W Definition of Terms
Term
EAT

Definition
Entering Air Temperature (F)

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

GPM

Water Capacity (Gallons per Minute)

BTUH
1.085 x cfm

MBH

1,000 BTUH

LWT

EWT

BTUH

Coil Heating Capacity (British Thermal Units

per Hour)

BTUH
500 x GPM

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 200F

male sweat type water connections

1-, 2-, 3-, and 4-row configurations

Table 8: Model TSS-W Correction Factors

Entering Water - Air Temperature Differential (T) Correction Factors
T

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

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
Single Unit:
Bulk Pack:
Buy American:

Cooling Only:
AP-VMA1410-0
AP-VMA1410-0D
AP-VMA1410-0G

Cooling w/Reheat
and/or Fan:
AP-VMA1420-0
AP-VMA1420-0D
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:

Ambient Operating
Conditions

0 to 50C (32 to 122F)

Ambient Storage
Conditions

-40 to 70C (-40 to 158F)

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 Nm
(389.4 lbin.) 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:

Actuator Torque

4 Nm (35 lbin) minimum (VMA1410/1420 only)

Shipping Weight

VMA1410/1420:

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

10 VA maximum (Relay and valve requirements not included.)

153 x 102 x 102 mm (6 x 4 x 4 in.)

13.1 kg (29 lb) for a box of ten, 1.3 kg (2.8 lb) each

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 70C (32 to 158F)

Storage Temperature: -20 to 70C (-4 to 158F)
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 Nm (35 lbin.)
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: 0.5C (0.9F)
Resolution: 0.1C (0.18F)
Range: -40 to 55C (-40 to 131F)
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 (60C [140F])
Maximum load: 200 ohms
Auto reset fuse: 60 mA @ 60C (140F), 100 mA @ 20C (68F)
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
Milwaukee, WI 53201

14

Single Duct Variable Air Volume Terminal (Model TSS) Product Bulletin

Published in U.S.A.
www.johnsoncontrols.com