Trane LonMark DDC VAV Controller Catalogue

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Controls— LonMark DDC VAV Controller

Introduction

This LonMark™ certified controller uses the Space Comfort Controller (SCC) profile to exchange information over a LonTalk™ network. Networks with LonMark certified controllers provide the latest open protocol technology. Being LonMark certified guarantees that owners and end-users have the capability of adding Trane products to other “open” systems and relieves owners of the pressure and expense of being locked into a single

DDC supplier. The Trane VV550 VAV controller with VariTrane VAV units can be applied to more than just Trane systems. When a customer buys a Trane VAV unit with Trane DDC controller, they take advantage of:

y Factory-commissioned quality

y Knowing they have selected the most

reliable VAV controllers in the industry

y Trane as a single source to solve any

VAV equipment, or system-related issues

y The most educated and thorough

factory service technicians in the controls industry

y Over 150 local parts centers

throughout North America that can provide what you need, when you need it.

Don’t let your existing controls supplier lock you out of the most recognized name in VAV system control in the industry. Specify Trane open-protocol systems.

What are the new features of this controller? Read on to find out more.

Don’t let your existing controls supplier lock you out of the most recognized name in VAV system control in the industry. Specify Trane open-protocol systems.

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Controls—

Options

LonMark DDC VAV Controller

VV550—Trane DDC LonMark Controller

Single-Duct Terminal Unit (VCCF, VCWF, and VCEF)

Unit Heat Control Description Page #

DD11 Space Temp Control without Reheat C 35

Cooling Only DD13 Space Temp Control with Remote Proportional Hot Water Valve with Optional Spare On/Off Output C 35 (VCCF model) DD14 Space Temp Control with Remote Staged Electric Heat C 35

Hot Water DD12 Space Temp Control with Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs) C 35

(VCWF model) DD13 Space Temp Control with Proportional Hot Water Valve with Optional Spare On/Off Output C 35

Electric DD14 Space Temp Control with Staged Electric Heat C 35

(VCEF model) DD15 Space Temp Control with Pulse-Width Modulation Electric Heat C 35

Dual-Duct Terminal Unit (VDDF)

Unit Heat Control Description Page #

(VDDF model) DD11 Space Temp Control (No Remote Heat) and Heating Control C 36

DD12 Space Temp Control with Remote Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs) C 35

DD15 Space Temp Control with Remote Pulse-Width Modulation Electric Heat C 35 DD17 Space Temp Control with Remote Normally-Open On/Off Hot Water Valve (Normally-Closed Output) C 35

DD17 Space Temp Control with Normally-Open On/Off Hot Water Valve (Normally-Closed Output) C 35

DD18 Space Temp Control (No Remote Heat) and Heating—Constant-Volume Control C 36

Fan-Powered Terminal Units Low-Height Fan-Powered Terminal Units

Unit Heat Control Description Page #

Cooling Only DD12 Space Temp Control with Remote Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 37

(VPCF, VSCF, DD13 Space Temp Control with Remote Proportional Hot Water Valve C 37

LPCF, LSCF DD14 Space Temp Control with Remote Staged On/Off Electric Heat C 37

models) DD15 Space Temp Control with Remote Pulse-Width Modulation Electric Heat C 37

Hot Water DD12 Space Temp Control with Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 37

(VPWF, VSWF DD13 Space Temp Control with Proportional Hot Water Valve C 37

LPWF, LSWF) DD17 Space Temp Control with Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 37

Electric DD14 Space Temp Control with Staged On/Off Electric Heat C 37

(VPEF, VSEF DD15 Space Temp Control with Pulse-Width Modulation Electric Heat C 37

LPEF, LSEF)

Fan-Powered Terminal Units

Unit Heat Control Description Page #

Cooling Only DD13 Space Temp Control with Remote Proportional Hot Water Valve C 38

(VPCF, VSCF DD14 Space Temp Control with Remote Staged On/Off Electric Heat C 38

models) DD15 Space Temp Control with Remote Pulse-Width Modulation Electric Heat C 38

Hot Water DD12 Space Temp Control with Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 38

(VPWF, VSWF DD13 Space Temp Control with Proportional Hot Water Valve C 38

models) DD17 Space Temp Control with Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 38 Electric DD14 Space Temp Control with Staged On/Off Electric Heat C 38

(VPEF, VSEF DD15 Space Temp Control with Pulse-Width Modulation Electric Heat C 38

models) C 38

DD11 Space Temp Control without Reheat C 37

DD17 Space Temp Control with Remote Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 37

DD11 Space Temp Control without Reheat C 38 DD12 Space Temp Control with Remote Normally-Closed On/Off Hot Water Valve with Normally-Open Outputs C 38

DD17 Space Temp Control with Remote Normally-Open On/Off Hot Water Valve with Normally-Closed Outputs C 38

with PSC Motor

with ECM

(VPCF, VPWF, VPEF, VSCF, VSWF, and VSEF)

(LPCF, LPWF, LPEF, LSCF, LSWF, and LSEF)

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Controls—

Features

General Features and Benefits

Assured Accuracy

y Proportional-plus-integral control loop

algorithm for determining required airflow needed to control room temperature. Airflow is limited by active minimum and maximum airflow setpoints.

y Pressure-independent (PI) operation

that automatically adjusts valve position to maintain required airflow. In certain low-flow situations or in cases where the flow measurement has failed, the DDC controller will operate in a pressure-dependent (PD) mode of operation.

y When combined with the patented

Trane Flow ring and pressure transducer, flow is repeatable to +/- 5% accuracy across the Pressure Independent (PI) flow range. (See Valve/Controller Airflow Guidelines section).

y Improved 2-Point Air Balancing is

available – Assures optimized flowsensing accuracy across the operating range. This provides a more accurate airflow balancing method when compared to typical single-point flow correction air balancing.

y Analog input resolution of +/- 1/8°F

within the comfort range maximizes zone temperature control yielding excellent comfort control.

LonMark DDC VAV Controller

Reliable Operation

y Built for life – Trane products are

designed to stand the test of time, with a proven design life that exceeds 20 years.

y Fully factory tested – fully screened

and configured at the factory. All features are tested including fan and reheat stage energization, air valve modulation, and controller inputs and outputs.

Safe Operation

y All components, including the

controller, pressure transducer, transformer, etc. are mounted in a NEMA 1 sheet metal enclosure and are tested as an assembly to UL1995 standards. The result is a rugged and safe VAV, controller, and thus, overall unit.

y When in PI-mode, EH is disabled when

the sensed flow is below the minimum required.

y HW coil VAV units in ventilation flow

control (VFC) have a Freeze protection algorithm to protect the water coil and the internal space from water damage. This is accomplished by driving the water valve to maximum position on alarm conditions.

Factory-commissioning of unit

& Benefits

System-Level Optimization

Trane controllers are designed to integrate into Trane Tracer Summit Systems and leverage clear and clean unit-controller related data for system level control decisions. Integrating a Trane VV550 controller into a Tracer Summit Control System provides the next step in building system control.

Specifically, system-level decisions on how to operate all components can be made. Energy efficient optimization strategies like Static Pressure Optimization, Ventilation Reset, and

Demand-controlled Ventilation can

be employed with the simple press of a button. The end-result is the most efficient and reliable building control system available.

Simplified Installation

Factory Commissioned Quality

Trane DDC VAV controllers are factorycommissioned. This means that the DDC boards are powered and runtested with your specific sequence parameters. They are connected to a communication link to make sure that information and diagnostic data function properly. Before any VariTrane VAV unit ships they must pass a rigorous quality control procedure. You can be assured that a Trane VAV unit with Trane DDC VAV controls will work right out of the crate.

– All

LonMark VV550 DDC VAV Controller

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Features

Zone sensor air balance

applied to a Trane zone sensor with thumbwheel and on/cancel buttons, a balancing contractor can drive the primary air valve to maximum or minimum airflow from the sensor to determine the point of calibration to be used (maximum will result in optimum performance). The flow reading can then be calibrated from the sensor, without the use of additional service tools. (Non-LCD versions)

DDC Sensor with Thumbwheel & NSB

– When

LonMark DDC VAV Controller

Tenant-Finish Heat Mode

office projects, the building is being constructed as tenants are being identified. Tenant-finish heat mode is designed for applications when a given floor has not been occupied. The main AHU system is used for heat and because the internal furnishings are not complete, the sensors have not been installed. In this case, the primary valve drives open using the heat of the main AHU to keep plumbing lines from freezing. When available, the operation of the VAV unit fan (series or parallel) remains unaffected.

Controller Flexibility

y 24 VAC binary input that can be

configured as a generic input or as occupancy input. When the DDC controller is operating with Tracer Summit, the status of the input is provided to Tracer Summit for its action. In stand-alone operation and when configured for an occupancy input, the input will control occupancy status of the DDC controller.

y Auxiliary temperature analog input

configured for an auxiliary temperature sensor. The value of the input is used as status-only by Tracer Summit if Tracer Summit is providing a supply air temperature to the DDC controller. Otherwise, the input will be used for determining heating/cooling

– In some

Benefits

control action of the VAV unit. When the auxiliary temperature sensor is located in the discharge of the unit, and attached to a Trane Tracer Summit BAS, additional test sequencing and reporting is available to maximize VAV system capabilities and simplify system commissioning.

y Dual-duct support with two DDC

controllers. One DDC controller controls the cooling air valve and the other controller controls the heating air valve. With constant-volume sequences, the discharge air volume is held constant by controlling discharge air volume with the heating Controller.

y LonMark certified performance

ensures that a Trane VAV with controller will provide state-of-the-art, consistent open communication protocol for integration with the industry’s latest (Non-Trane) building automation control systems, including Johnson Control, Andover, Siemans, Honeywell, etc.

y CO2 demand controlled ventilation

enables a HVAC system to adjust ventilation flow based on critical zone, average CO Trane demand controlled ventilation strategies are pre-defined for simplifed application and can be easily customized to meet the needs of a specific system.

of specified zones, etc.

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Controls—

Controller

LonMark DDC VAV Controller

Trane DDC VAV Controller Logic

Control Logic

Direct Digital Control (DDC) controllers are today’s industry standard. DDC controllers share system-level data to optimize system performance (including changing ventilation requirements, system static pressures, supply air temperatures, etc.). Variables available via a simple twisted-shielded wire pair include occupied/unoccupied status, minimum and maximum airflow setpoints, zone temperature and temperature setpoints, air valve position, airflow cfm, fan status (on or off), fan operation mode (parallel or series), reheat status (on or off), VAV unit type, air valve size, temperature correction offsets, flow correction values, ventilation fraction, etc.

With the advent of LonMark open protocol, the most reliable VAV controller is now available for ANY system. Gone are the days of being locked into a single supplier. Trane DDC controllers provide Trane-designed solid-state electronics intended specifically for VAV applications including:

1. Space Temperature Control

2. Ventilation Flow Control (100% outside air applications)

3. Flow Tracking Space Pressurization Control (New feature)

Flow Sensor Signal vs. Airflow Delivery

Space Temperature Control

Space temperature control applications are where Trane emerged as an industry leader in quality and reliability. This did not occur overnight and has continued to improve as our controller and control logic has improved over time. STC employs controller logic designed to modulate the supply airstream and associated reheat (either local or remote) to exactly match the load requirements of the space.

Additionally, minimum and maximum airflow and specific controller sequence requirements are preprogrammed to ensure that appropriate ventilation standards are consistently maintained. When connected to a Trane Tracer Summit control system, trend logging, remote alarming, etc. are available to fully utilize the power and capabilities of your systems.

General Operation-Cooling

In cooling control action, the DDC controller matches primary airflow to cooling load. The DDC controller will automatically change over to heating control action if the supply air temperature is above a configured/ editable setpoint. When the supply air temperature is less than 10 degrees below this setpoint, the controller will automatically switch to cooling control action. The DDC controller first chooses the Tracer Summit-provided supply air

Logic

temperature value to use for auto changeover. If this is not available, it uses the temperature provided by the optional auxiliary temperature sensor (must be installed for inlet temperature monitoring). If this is also not available, it uses the heating/cooling mode assigned by Tracer Summit or the DDC controller’s service tool.

General Operation-Reheat

In heating control action, the DDC controller matches primary airflow to heating load. The DDC controller will automatically change over to heating control action if the supply air temperature is above a configured/ editable setpoint. When the supply air temperature is less than 10 degrees below this setpoint, the controller will automatically switch to cooling control action. The DDC controller first chooses the Tracer Summit-provided supply air temperature value to use for auto changeover. If this is not available, it uses the temperature provided by the optional auxiliary temperature sensor (must be installed for inlet temperature monitoring). If this is also not available, it uses the heating/ cooling mode assigned by Tracer Summit or the DDC controller’s service tool.

When heat is added to the primary air, the air is considered reheated. Reheat can be either unit in the form of an electric coil or hot water coil) or existing wall fin radiation, convector, etc.) or any combination of local and remote. The operating characteristics of the four basic types of VariTrane DDC terminal reheat are discussed.

local

(integral to the VAV

remote

(typically

0.1

Flow Sensor DP (In. wg)

0.01 10 100 1,000 10,000

Note: Flow sensor DP (in. wg) is measured at the flow ring to aid in system balancing and commissioning. See "Valve/Controller Airflow Guidelines" in each section for unit performance.

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