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LonMark DDC

VAV Controller

VAV-PRC008-EN

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.

Summary of content (15 pages)

PAGE 1
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 Controls— LonMark DDC VAV Controller Introduction DDC supplier.
PAGE 2
Controls— LonMark DDC VAV Controller Options VV550—Trane DDC LonMark Controller Single-Duct Terminal Unit (VCCF, VCWF, and VCEF) Unit Heat Cooling Only (VCCF model) Hot Water (VCWF model) Electric (VCEF model) Control DD11 DD12 DD13 DD14 DD15 DD17 DD12 DD13 DD17 DD14 DD15 Description SpaceTemp Control without Reheat SpaceTemp Control with Remote Normally-Closed On/Off Hot Water Valve (Normally-Open Outputs) SpaceTemp Control with Remote Proportional Hot Water Valve with Optional Spare On/Off Output Spa
PAGE 3
Controls— LonMark DDC VAV Controller 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.
PAGE 4
Controls— LonMark DDC VAV Controller Zone sensor air balance – When 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.
PAGE 5
Controls— LonMark DDC VAV Controller Trane DDC VAV Controller Logic Controller Logic 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.
PAGE 6
Controls— LonMark DDC VAV Controller Single-Duct: On/Off Hot Water Reheat – Three stages of on/off hot water reheat are available. Two-position water valves complete the HW reheat system and are either fully opened or fully closed. The heating minimum airflow setpoint is enforced during reheat. Stage 1 energizes when the space temperature is at or below the heating setpoint. When the zone temperature rises above the active heating setpoint by 0.5°F (0.28°C), stage 1 is de-energized.
PAGE 7
Controls— LonMark DDC VAV Controller Fan-Powered Terminal Units: On/Off Hot Water Reheat – One or two stages of on/off hot water reheat are available. Two position water valves complete the HW reheat system and are either fully opened or fully closed. The heating minimum airflow setpoint is enforced during reheat. On parallel fan-powered units, the fan is energized upon a call for heating.
PAGE 8
Controls— LonMark DDC VAV Controller Ventilation Control Ventilation control enhances the usability of Trane DDC controllers in more select applications that require measurement of outside air (ventilation). Ventilation control is designed for use with constant volume single-duct VAV units which modulate VAV-PRC008-EN the primary damper and associated reheat to maintain an average constant discharge air temperature.
PAGE 9
Controls— LonMark DDC VAV Controller the air valve to maintain space comfort, the exhaust box modulates a similar amount to maintain the required CFM differential. This is a simple, reliable means of pressurization control, which meets the requirements of the majority of zone pressurization control applications. Typical applications include: Flow Tracking Control This enhanced VAV DDC controller feature allows two Trane VV550 controllers to coordinate modulation simultaneously.
PAGE 10
Controls— LonMark DDC VAV Controller Control Drawings VV550—DDC LonMark Controller for Single-Duct Terminals DD11–Space Temp Control Cooling Only DD12–Space Temp Control w/ N.C. Hot Water Valve DD13–Space Temp Control w/ Modulating Hot Water Valve DD14 Space Temp Control w/ Stage Electric Heat DD15–Space Temp Control w/ Pulse-width Modulation DD17–Space Temp Control w/ N.O. Hot Water Valve HEATER STAGE OPTIONAL CONTACTOR(S) TRANSFORMER 10. 7.
PAGE 11
Controls— LonMark DDC VAV Controller Control Drawings VV550—DDC LonMark Controller for Dual-Duct Terminals DD11–Space Temp Control (No Remote Heat) and Heating Control DD18–Space Temp Control (No Remote Heat) and Heating Control—Constant-Volume Control COOLING VALVE 24VAC TO TB1 ON HEATING VALVE UCM 6.
PAGE 12
Controls— LonMark DDC VAV Controller Control Drawings VV550—DDC LonMark Controller for Fan-Powered Terminals DD11–Space Temp Control Cooling Only DD12–Space Temp Control w/ N.C. Hot Water Valve DD13–Space Temp Control w/ Modulating Hot Water Valve DD14–Space Temp Control w/ Stage Electric Heat DD15–Space Temp Control w/ Pulse-width Modulation DD17–Space Temp Control w/ N.O. Hot Water Valve 6. OPTIONAL FIELD INSTALLED ELECTRIC HEATER 8. 7. HEATER STAGE 2ND V 5.
PAGE 13
Controls— LonMark DDC VAV Controller Control Drawings VV550—DDC LonMark Controller for ECM Fan-Powered Terminals DD11—Space Temp Control Cooling Only DD12—Space Temp Control w/ N.C. Hot Water Valve DD13—Space Temp Control w/ Modulating Hot Water Valve DD14—Space Temp Control w/ Stage Electric Heat DD15—Space Temp Control w/ Pulse-width Modulation DD17—Space Temp Control w/ N.O. Hot Water Valve TO DAMPER ACTUATOR HEATER STAGE CONTACTOR(S) 7.
PAGE 14
Controls— LonMark DDC VAV Controller Accessories LonMark Direct Digital Controller—Unit Control Module The Trane LonMark direct digital controller Unit Control Module (DDCUCM) is a microprocessor-based terminal unit with non-volatile memory which provides accurate airflow and room temperature control of Trane and non-Trane VAV air terminal units. LonMark provides a simple open protocol to allow integration of Trane VAV units and controls into other existing control systems.
PAGE 15
Controls— LonMark DDC VAV Controller Data Lists Table 1 provides an input/output listing forTracer VV550/551 VAV controllers. Table 2 provides the configuration properties for the controller.The content of the lists conforms to both the LonMark SCC functional profile 8500 and the LonMark node object. Table 1.