Carrier VVT 33ZC Installation, Start-up And Configuration Instructions

Contents

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 533-30012 Printed in U.S.A. Form 33ZC-14SI Pg 1 10-04 Replaces: NewBook 1 4Tab 11a 13aInstallation, Start-Up andConfiguration InstructionsPart Number 33ZCBC-01CONTENTS PageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Bypass Controller Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Field-Supplied Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2• DUCT TEMPERATURE (DAT) SENSORMount Bypass Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2• LOCATION• MOUNTINGConnect the Power Transformer . . . . . . . . . . . . . . . . . . . . . . . .2Bypass Controller Inputs and Outputs . . . . . . . . . . . . . . . . . 5Install Duct Temperature Sensor. . . . . . . . . . . . . . . . . . . . . . . 5Install Pressure Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Install Field-Supplied Actuators . . . . . . . . . . . . . . . . . . . . . . . .6• FLOATING POINT HIGH-TORQUE ACTUATORS• LINKED ACTUATORSDamper Stops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Connect the Carrier Network Communication Bus . . . . . 6• COMMUNICATION BUS WIRE SPECIFICATIONS• CONNECTION TO THE COMMUNICATION BUSSTART-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Perform System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-17Status Display Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Maintenance Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13• BYPASS CONTROLLER MAINTENANCE TABLE• BYPASS CONTROLLER COMMISSIONINGMAINTENANCE TABLE• BYPASS CONTROLLER SYSTEM PILOT DEFAULTMAINTENANCE TABLEConfiguration Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15• ALARM CONFIGURATION TABLE• BYPASS CONTROLLER CONFIGURATION TABLE• SYSTEM PRESSURE SET POINT CONFIGURATIONTABLE• DUCT SENSOR CONFIGURATION TABLE• DEVICE CONFIGURATION TABLE• LANGUAGE CONFIGURATION TABLEOPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-20System Pressure Operation . . . . . . . . . . . . . . . . . . . . . . . .18Bypass Controller Calibration . . . . . . . . . . . . . . . . . . . . . .18SAFETY CONSIDERATIONSGENERALThe 3V control system VVT bypass controller (33ZCBC-01)is a system static pressure controller that operates to maintain thedesired system duct pressure based on the system pressure setpoint. The VVT bypass controller is used with a system of VVTzone controllers. Zone controllers maintain precise temperaturecontrol in the space by regulating the flow of conditioned air intothe space and operating an optional terminal fan.As part of the 3V control system, the bypass controller isdesigned to communicate using a Carrier protocol with aLinkage Coordinator zone controller. One Linkage Coordina-tor zone controller can coordinate up to 31 additional zonecontrollers. The purpose of the Linkage Coordinator/zonerelationship is to provide an efficient data path for communica-tion between the zone controllers, bypass controller, andassociated Carrier network air source. This arrangement makesup the 3V control system.A user interface is not required for everyday operation ofthe bypass controller. A service person or building owner canconfigure or operate the bypass controller through a Carriernetwork user interface such as the System Pilot or Carriersoftware.INSTALLATIONGeneral — The bypass controller is used to control thebypass damper actuator in the 3V control system. The purposeof the bypass damper is to account for fluctuations in the sup-ply air pressure caused by the zone dampers modulating to sat-isfy individual set points. The bypass system allows a constantvolume HVAC (heating, ventilation and air conditioning) unitto supply variable volumes of air to the building. The systembypasses air from the supply side to the return side of the unit.Determining the proper size for the bypass damper is criti-cal for the operation of the VVT (variable volume/variabletemperature) system. If the damper selected is too large, it mayhave to modulate more than necessary to react to system pres-sure changes. The ability of the system to stay within a pressurerange is compromised. When the damper is undersized, thecapability of the damper to control the pressure may be com-promised due to the inability to bypass enough air volume. Anundersized damper also creates higher airflow velocities whichadd to the noise generated by the system.SAFETY NOTEAir-conditioning equipment will provide safe and reli-able service when operated within design specifications.The equipment should be operated and serviced only byauthorized personnel who have a thorough knowledgeof system operation, safety devices and emergencyprocedures.Good judgement should be used in applying any manu-facturer’s instructions to avoid injury to personnel or dam-age to equipment and property.Disconnect all power to the unit before performing mainte-nance or service. Unit may automatically start if power isnot disconnected. Electrical shock and personal injurycould result.3V™ Control SystemVVT® Bypass Controller33ZC