| Вид документа | Бюлетень виробу |
|---|---|
| Виробник | JCI |
| Код документа | series-flow-fan-powered-terminal-model-tcs-product-bulletin-vma1420 |
| Група обладнання | VMA14 VAV Modular Assembly |
| Сторінок | 16 |
| Мова документа | англійська |
| Розмір файлу | 0.4 МБ |
Текст документа
Product Bulletin
Issue Date March 27, 2009
Series Flow Fan Powered Terminal (Model TCS)
Model TCS fan terminals are specifically designed for
quiet operation. They also offer improved space
comfort and flexibility for a wide variety of Heating,
Ventilating, and Air Conditioning (HVAC) systems.
This is critical in today’s buildings where occupants are
placing more emphasis on indoor acoustics.
Due to heightened interest in indoor air quality, many
HVAC system designers are focusing on the effects of
particulate contamination within a building’s occupied
space. Often, HVAC system noise is overlooked as a
source of occupied space contamination. The TCS
Terminal is specifically designed to eliminate obtrusive
fan noise from reaching the occupants while providing Figure 1: Series Flow Fan Powered Terminal
constant air motion in the space. (Model TCS)
Occupants benefit from a TCS design that minimizes
low frequency (125 - 250 Hz) sound levels that
typically dominate the space sound level. The TCS
also minimizes the fluctuation in sound levels that
occurs during Variable Air Volume (VAV) damper
modulation.
Bundled with the TCS 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: VMA1420
The VMA and LN Series controls can be used in these
types of applications:
• Series Fan On/Off or Electronically Commutated
Motor (ECM)
• Series Fan with Reheat Coil
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-1201826 www.johnsoncontrols.com
Features and Benefits
Factory-Provided Direct An integrated VAV box with controls
Digital Controls (DDC) eliminates the coordination and difficulties
associated with factory mounting
Factory-Commissioned Downloading of software, setting of
DDC parameters, addressing and testing at the
factory reduces startup time and lowers risk
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 Installation time can be reduced 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 Series Flow Fan Powered Terminal (Model TCS) Product Bulletin
Quick Installation
Model TCS Terminals
A standard single point electrical main power
Flexibility connection is provided. Electronic controls and
electrical components are located on the same side of
Selection and Layout
the casing for quick access, adjustment, and
The TCS provides flexibility in system design. troubleshooting.
Reduced noise at the fan terminal enables the system
designer to place properly sized units directly above Finite fan speed adjustment is accomplished with an
occupied spaces. It is not necessary to use the electronic Speed Controller Relay (SCR). The SCR fan
crowded space above a hall or corridor to locate the speed controller is compatible with the fan motor. This
equipment. This will reduce lengthy and expensive minimizes electronic interference and harmonic
discharge duct runs. The standard shallow casing distortion that occurs from noncompatible motor and
height (14” up to 1,000 Cubic Feet per Minute [CFM]) SCR components. Increased motor life and efficiency
minimizes conflict with other systems competing for result from the compatible design.
ceiling space. The sensor ensures accurate control,
even when space constraints do not permit long, TCS Terminals use three-tap motors that
straight inlet duct runs to the terminal. accommodate a broad range of flow and static
pressure field conditions while dramatically increasing
Sizes efficiency.
Model TCS Terminals are available in nine fan sizes to The sensor ensures accurate airflow measurement,
handle airflow capacities between 100 and 4,800 regardless of field installation conditions. A calibration
CFM. Most fan sizes are available with three primary label and wiring diagram is located on the terminal for
air valve sizes to optimize the unit fan and primary air quick reference during startup.
valve combinations required by current industry needs.
The terminal is constructed to enable installation with
Convenience standard metal hanging straps. Optional hanger
brackets for use with all-thread support rods or wire
Quality hangers are also available.
All TCS Terminals are thoroughly inspected during
each step of the manufacturing process, including a
comprehensive pre-ship inspection, to ensure the
highest quality product available. Each unit is also run
tested before leaving the factory to ensure
trouble-free field startup.
Series Flow Fan Powered Terminal (Model TCS) Product Bulletin 3
Maintenance and Service
Value and Security
TCS Terminals require no periodic maintenance other
Quality than optional filter replacement. If component
All metal components are fabricated from replacement becomes necessary, the unit is designed
premium-grade G90 galvanized, chromate-finished to minimize field labor. The bottom casing panels can
steel. Unlike most manufacturers’ terminals, the steel be removed to provide easy access to the fan
used in the TCS is capable of withstanding a 125-hour assembly, and the motor electrical leads are easily
salt spray test without showing any evidence of red unplugged.
rust.
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 sensor’s 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. Energy efficient three-tap, three-winding,
and permanent-split-capacitor fan motors are
manufactured to ensure efficient, quiet, and reliable
maintenance operation.
Three-tap motors provide superior energy efficiency
over single speed motors by delivering three separate
horsepower outputs. For example, a nominal 1/2 hp
motor delivers 1/3 hp on medium tap and 1/4 hp on
low tap. This allows the motor to operate at a higher
efficiency when at a reduced fan capacity.
Fan terminals that use a single speed motor must rely
solely on an SCR controller to obtain the reduction in
fan capacity. At minimum turndown, they suffer from
excessive power consumption and high motor-winding
temperatures, significantly reducing the motor life.
Agency Certification
Model TCS Terminals, including those with 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.
TCS Terminals comply with applicable NEC
requirements, are tested in accordance with ARI
Standard 880, and are certified by ARI.
4 Series Flow Fan Powered Terminal (Model TCS) Product Bulletin
Electrical Components
Standard Features
Standard electrical components include:
Construction
• cETL listed for safety compliance
Standard construction features include:
• National Electrical Manufacturers Association
• ARI 880 certified and labeled (NEMA) Type 1 wiring enclosure
• 22-gauge galvanized steel casing and valve
Electric Heat
• 3/4" 4 lb.ft3 skin, dual density fiberglass insulation Standard electric heat features include:
Fan Assembly • ETL listed as an assembly for safety compliance
Standard fan assembly features include:
• integral electric heat assembly
• forward curved, dynamically balanced, direct drive,
• automatic reset primary and back-up secondary
galvanized blower wheel
thermal limits
• 115 to 277 volt single-phase, three-tap Permanent
• single-point power connection
Split Capacitor (PSC) motor
• hinged electrical enclosure
• SCR fan speed controller
• fusing per NEC
• quick-select motor speed terminal
• permanently lubricated motor bearings
• thermally protected motor
• vibration isolation motor mounts
• single point wiring
Primary Air Valve
Standard primary air valve features include:
• embossed rigidity rings
• non-thermal conducting damper shaft with position
indicator
• mechanical stops for open and closed position
• center-averaging airflow sensor
• brass balancing tees
• plenum-rated sensor tubing
Hot Water Coils
Standard hot water coil features include:
• ARI 410 certified and labeled
• 1-, 2-, 3-, 4-row coils
• tested at a minimum of 350 psig under water
Series Flow Fan Powered Terminal (Model TCS) Product Bulletin 5
Electric Heat
Optional Features
Optional electric heat features include:
Construction
• proportional (SSR) heater control
Optional construction features include:
• mercury contactors
• 20-gauge galvanized steel construction
• door interlocking disconnect switches
• 3/4” or 1” insulation
• scrim-reinforced, foil-faced insulation meeting Controls
American Society for Testing and Materials Optional controls include:
(ASTM) C1136 for mold, mildew, and humidity
resistance • factory-provided controls
• double wall construction with 22-gauge liner • Direct Digital Controls (DDC)
• mounting brackets to accept all-thread hanging • pneumatic controls
rods or wire hangers
• low temperature construction for use in thermal
storage applications, including a thermally isolated
primary air inlet and a composite damper shaft
• low velocity, low pressure drop induced air filter
rack and filters located at induction inlet and/or
radiated sound damper
• hot water, steam, or electric heating coils mounted
at unit discharge — access plate upstream of
hydronic coil (standard)
Fan Assembly
Optional fan assembly features include:
• 208, 230, 240 and 480 volt single-phase PSC
motors
• 220/240 volt 50 Hz motors
Electrical Components
Optional electrical components include:
• full unit toggle disconnect and inline motor fusing
• primary and secondary transformer fusing
6 Series Flow Fan Powered Terminal (Model TCS) Product Bulletin
Automated Commissioning
VMA1400 Series Controllers
Because the VMA1420 performs loop tuning
Actuator Enhancements automatically, there is no need to set proportional
bands and integration terms. There is no need to set
The VMA1420 uses an actuator with a fast response
any jumpers or switches. Even network addressing
stepper motor, which is quiet (<35 dBA) and precise
can be done via software, if desired.
(23 K resolution). The stepper motor drives the
damper from full open to full close in 30 seconds. This The VMA1420 is configured to detect the damper
significantly reduces the time to commission and end-stops automatically. On powerup, the actuator
balance a VAV terminal box. The stepper motor drives to both hard stops on the VAV box and
quickly and accurately adjusts the damper position in remembers these positions. These automated features
response to new conditions, minimizing position get the system operating quickly.
hunting and motor runtime.
LN Series Controllers
Applications
The VMA1400 Series controllers can be configured for LN-VAVL-0 and LN-VAVC-0 Controllers
most single duct VAV applications. The VMA1420 LN-VAVL-0 and LN-VAVC-0 controllers include an
requires an additional damper actuator with Differential enclosure with actuator, pressure sensor, eight
Pressure Transducer (DPT) sensor for supply/exhaust Input/Outputs (I/Os), and LONWORKS® Network
applications and dual duct applications. Services (LNS®) plug-in.
Standard applications for the VMA1420 reside in the
Applications
HVAC PRO library, which is a section of the Global
Operations Support library. See Table 1 for more The LN-VAVL-0 Series controllers can be configured
detailed application and control options. Also refer to for most single duct VAV applications. The LN-VAVC-0
the Variable Air Volume Modular Assembly (VMA) requires an additional damper actuator with Differential
1400 Series Application Note (LIT-6375125). Pressure Transducer (DPT) sensor for supply/exhaust
applications and dual duct applications.
Advanced Diagnostics Standard applications for the LN-VAVL-0 and the
The VMA1400 Series has several unique diagnostic LN-VAVC-0 reside in the Global Operations Support
features. Diagnostics include damper stall detection, library.
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
TCS 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.
Series Flow Fan Powered Terminal (Model TCS) Product Bulletin 7
Table 1: Applications
Applications Control Options VMA1400 LON
1410 1420 LN-VAVL-0 LN-VAVC-0
System Types Fan Powered (Series) X X
Pressure Independent X X
Heating (Terminal Box) Floating 3-Wire Valve Actuator X X
Proportional Valve Actuator X X
Normally Open or Normally Closed X X
Valve
1- to 3-Stage Electric X X
2-Stage Electric X X
Heating (Supplemental) Floating 3-Wire Valve Actuator X X
Proportional Valve Actuator X X
Normally Open or Normally Closed X X
Valve
Single Stage Electric X X
Cooling (Terminal Box) Stepper Motor Damper Actuator X X
Floating/3-Wire Valve only X X
(Incremental) Actuator
Proportional Actuator External Valve X X
Fan-Powered Terminal Series, On/Off Control X X
Box
Series, Proportional Control X X
Lighting On/Off (In Relation to Occupancy X X
Mode)
Modes Occ/Unocc X X
Occ/Temp X X
8 Series Flow Fan Powered Terminal (Model TCS) Product Bulletin
Standard Terminal Construction
Model TCS
The TCS Terminal incorporates many standard
features that are expensive options for other
manufacturers.
Figure 4: Model TCS – Standard Features
(Front View)
Figure 5: Model TCS – Standard Features
(Rear View)
Table 2: Model TCS – Standard Features
Feature Description
1 Integral discharge collar simplifies field installation
2 Dynamically balanced, direct drive fan assembly
3 Electrical devices installed within a NEMA Type 1 Enclosure, with single point power connection
4 Full bottom removable access panels
5 Product label includes tagging, airflow, and electrical information
6 Mechanical lock construction ensures lowest possible casing leakage
7 All unit configurations listed with ETL for safety compliance
8 Low leakage damper incorporates closed cell foam gasket
9 Roll-formed inlet collar with integral stiffening ribs adds strength and rigidity
10 Premium, chromate coated, G90 galvanized steel casing withstands 125-hour salt spray test per American
Society for Testing and Materials (ASTM) B-117
11 Mechanically fastened insulation for added security
3/4" thick, 4 lb.ft skin, dual density insulation complying with Underwriters Laboratories Inc.® (UL) 181 and
3
12
National Fire Protection Association (NFPA) 90A
13 Patented airflow sensor
(not shown) Dynamically balanced, direct drive fan assembly
(not shown) Factory-supplied and installed controls
Series Flow Fan Powered Terminal (Model TCS) Product Bulletin 9
System Pressure Considerations
Application and Selection
Because the terminal unit fan is selected to move
Purpose of Series Flow Fan Terminals 100% of the design airflow to the zone, all downstream
pressure losses are neglected when determining
Series flow fan powered terminals offer improved
minimum primary air inlet pressure to the unit. The
space comfort and flexibility in a wide variety of
central fan is only required to overcome the minimal
applications. Substantial operating savings can be
loss through the unit air valve, reducing the central fan
realized through the recovery of waste heat, reduced
total pressure and horsepower requirements. Due to
central fan horsepower requirements, and night
extremely low pressure drop of the air valve, central
setback operation.
fan operating inlet static pressures may be as low as
0.5” wg.
Heat Recovery
The TCS recovers heat from lights and core areas to Common Misapplication
offset heating loads in perimeter zones. Additional
Note that a conventional Series Flow Fan Terminal
heat is available at the terminal unit using electric,
cannot be applied as a booster fan. In problem areas
steam, or hot water heating coils. Controls are
where there is insufficient primary airflow capacity, this
available to energize remote heating devices such as
terminal does not aid in pulling more air from the
wall fin, fan coils, radiant panels, and roof load plenum
primary duct. Instead the unit fan draws air from the
unit heaters.
plenum inlet, which has less resistance.
Indoor Air Quality The induction opening should never be sealed, as this
The TCS enhances the indoor air quality of a building causes problems should the primary airflow increase
by providing constant air motion, and higher air beyond the unit fan capacity. In this condition, the fan
volumes in the heating mode than typically provided by casing becomes pressurized, which eventually stalls
straight VAV single duct terminals or parallel flow fan the fan motor and causes premature failure.
terminals. The higher air capacity provides continuous
air motion in the space and lowers the heating
discharge air temperature. This combination improves
air circulation, preventing accumulation of CO2
concentrations in stagnant areas. Increased air motion
improves occupant comfort. The higher air capacity
also improves the performance of diffusers and
minimizes diffuser dumping.
Selection Guidelines
The TCS Terminal has been designed to provide
maximum flexibility in matching primary air valve
capacities (cooling loads) with unit fan capacities. The
overall unit size is dictated by the fan size. With each
unit fan size, multiple primary air valve sizes are
available to handle a wide range of cooling capacities.
The fan should be sized first to determine the unit size.
The selection is made by cross plotting the specified
fan capacity and external static pressure on the
appropriate fan performance curves. Terminals using
hot water heating coils require the summation of the
coil air pressure drop and the design External Static
Pressure (ESP) to determine the total ESP. It is
common to have more than one fan size that can meet
the design requirements. Typically, the selection
begins with the smallest fan that can meet the
capacity. Occasionally this selection may not meet the
acoustical requirements, and you should select the
next larger fan size. Upsizing may also occur when it is
necessary to meet the design capacity on the medium
or low motor tap.
10 Series Flow Fan Powered Terminal (Model TCS) Product Bulletin
Electric Heater Features and Selection Table 3: Maximum Allowable kW
Unit Size Max CFM Max kW
Model TCS-E
404 250 3
504 350 5
604 400 5
506 350 5
606 550 7
806 700 10
611 500 7
811 1000 14
1011 1200 17
818 1000 14
1018 1600 22
1218 1800 25
Figure 6: Model TCS-E
1021 1600 22
Model TCS-E Standard Features 1221 2300 30
1421 2300 30
Model TCS-E standard features include:
1224 2300 20
• ETL listed as an assembly 1424 2600 25
• primary auto-reset high limit 1230 2300 20
1430 3100 30
• secondary high limit
1630 3100 30
• hinged control panel 1440 3100 30
• ni-chrome elements 1640 4100 35
1644 4100 40
• primary/secondary power terminations
1844 4600 40
• fusing per NEC
• wiring diagram and ETL label
Model TCS-E Selection Procedure
• fan interlock device (relay or Pneumatic Electric With standard heater elements, the maximum capacity
[PE] switch) (kW) is obtained by dividing the heating (fan) Standard
• Single point power connection Cubic Feet per Minute (SCFM) by 70. In other words,
the terminal must have at least 70 SCFM per kW. In
• Available kW increments are as follows: addition, each size terminal has a maximum allowable
0.5 to 5.0 kW - .25 kW; 5.0 to 10.0 kW - .50 kW kW based upon the specific heater element
Above 10 kW - 1.0 kW configuration (for example, voltage, phase, and
number of steps).
Model TCS-E Optional Features
Heaters require a minimum of 0.07” wg downstream
Model TCS-E optional features include: static pressure to ensure proper operation.
• disconnect (toggle or door interlocking) For optimum diffuser performance in overhead heating
• PE switches applications, the supply air temperature should be
within 20°F of the desired space temperature. This
• mercury and magnetic contactors typically requires a higher air capacity, which provides
higher air motion in the space increasing thermal
• manual reset secondary limit
comfort. The electric heater should be selected with
• proportional control (Solid State Relay [SSR]) this in mind, keeping the Leaving Air Temperature
(LAT) as low as possible.
• 24 volt control transformer
• airflow switch
Series Flow Fan Powered Terminal (Model TCS) Product Bulletin 11
Table 4: Model TCS-E Selection Equations
Equations
KW = CFM x ΔT x 1.085* * Air density at sea
3413 level - reduce by
0.036 for each 1,000
CFM = KW x 3413 feet of altitude above
ΔT x 1.085 * sea level.
ΔT = KW x 3413
CFM x 1.085*
Table 5: Model TCS-E - Calculating Line Amperage
Equations
Single Phase Amperes = KW x 1,000
Volts
Three Phase Amperes = KW x 1,000
Volts x 1.73
12 Series Flow Fan Powered Terminal (Model TCS) Product Bulletin
Hot Water Features and Selection Model TCS-W Standard Features
Model TCS-W standard features include:
Model TCS-W
• aluminum fin construction with die-formed spacer
collars for uniform spacing
• mechanically expanded copper tubes leak tested
to 350 psig air pressure
• male sweat type water connections
• 1-, 2-, 3-, and 4-row configurations
• top and bottom access plates in coil casing for fan
sizes 04 through 24 (coil access through bottom
casing panel for fan sizes 30, 40, and 44)
Model TCS-W Optional Features
Figure 7: Model TCS-W Model TCS-W optional features include:
Table 6: Model TCS-W – Definition of Terms • steam coils
Term Definition • multi-circuit coils for reduced water pressure drop
EAT Entering Air Temperature (°F) • opposite hand water connections
EWT Entering Water Temperature (°F)
LWT Leaving Water Temperature (°F)
Model TCS-W Selection Procedure
LAT Leaving Air Temperature
Table 8 gives correction factors for various entering
ΔTs (difference between EWT and EAT). Multiply MBH
CFM Air Capacity (Cubic Feet per Minute)
values obtained from selection tables by the
GPM Water Capacity (Gallons per Minute) appropriate correction factor to obtain the actual MBH
MBH 1,000 BTUH value. Air and water pressure drop can be read directly
BTUH Coil Heating Capacity (British Thermal Units from the selection tables.
per Hour)
The leaving air and leaving water temperatures can be
ΔT EWT minus EAT calculated from the following fundamental formulas.
Table 7: LAT/LWT Fundamental Formulas
Formulas
LAT = EAT + BTUH
1.085 x CFM
LWT = EWT - BTUH
500 x GPM
Table 8: Correction Factors
Entering Water - Air Temperature Differential (ΔT) Correction Factors
ΔT 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
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 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155
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
Series Flow Fan Powered Terminal (Model TCS) Product Bulletin 13
Technical Specifications
Product Name VAV Modular Assembly (VMA) 1400 Series
Product Code Number Cooling w/Reheat and/or Fan:
Single Unit: AP-VMA1420-0
Bulk Pack: AP-VMA1420-0D
Buy American: AP-VMA1420-0G
Supply Voltage 20-30 VAC at 50 or 60 Hz
Optional Fuse Current 2.0 amperes for a VMA1420
Power Consumption VMA1420: 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 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 VMA1420 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) VMA1420: 153 x 102 x 102 mm (6 x 4 x 4 in.)
Actuator Torque 4 N⋅m (35 lb⋅in) minimum (VMA1420 only)
Shipping Weight VMA1420: 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 Pascal (0-1.5 in. W.C.)
Outputs Binary outputs, 24 VAC triac switched, 25-500 mA loads
Stepper drive, 2 to 767 steps per second (23,000 step resolution) (VMA1420 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
14 Series Flow Fan Powered Terminal (Model TCS) Product Bulletin
Technical Specifications (Cont.)
Product Name Metasys System LN Series Variable Air Volume Profile Application Controller (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°C to 70°C, 32°F to 158°F
Storage Temperature: -20°C to 70°C, -4°F 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: 4.88 x 8.9 x 2.48 inches (124 x 226 x 63 mm)
Weight: 1.84 lbs (0.835 kg)
Safety: CSA and UL Listed
Damper Motor Motor: LM24-Mus
Torque: 35 in·lb, 4 N·m
Angle of Rotation: 95° adjustable
Fits shaft diameter: 8.5 mm to 18.2 mm; 5/16” to 3/4”
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°C to 55°C; -40°F 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
1 Differential pressure: Range 125-250-500 Pa (0.5-1-2’’ H20), Accuracy ±3% full scale
Continued on next page. . .
Series Flow Fan Powered Terminal (Model TCS) Product Bulletin 15
Technical Specifications (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: 60mA @ 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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