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

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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: New
Book 1 4
Tab 11a 13a
Installation, Start-Up and
Configuration Instructions
Part Number 33ZCBC-01
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Bypass Controller Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Field-Supplied Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• DUCT TEMPERATURE (DAT) SENSOR
Mount Bypass Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• LOCATION
• MOUNTING
Connect the Power Transformer . . . . . . . . . . . . . . . . . . . . . . . .2
Bypass Controller Inputs and Outputs . . . . . . . . . . . . . . . . . 5
Install Duct Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . 5
Install Pressure Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Install Field-Supplied Actuators . . . . . . . . . . . . . . . . . . . . . . . .6
• FLOATING POINT HIGH-TORQUE ACTUATORS
• LINKED ACTUATORS
Damper Stops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Connect the Carrier Network Communication Bus . . . . . 6
• COMMUNICATION BUS WIRE SPECIFICATIONS
• CONNECTION TO THE COMMUNICATION BUS
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Perform System Checkout
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CONFIGURATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-17
Status Display Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maintenance Tables
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
• BYPASS CONTROLLER MAINTENANCE TABLE
• BYPASS CONTROLLER COMMISSIONING
MAINTENANCE TABLE
• BYPASS CONTROLLER SYSTEM PILOT DEFAULT
MAINTENANCE TABLE
Configuration Tables
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
• ALARM CONFIGURATION TABLE
• BYPASS CONTROLLER CONFIGURATION TABLE
• SYSTEM PRESSURE SET POINT CONFIGURATION
TABLE
• DUCT SENSOR CONFIGURATION TABLE
• DEVICE CONFIGURATION TABLE
• LANGUAGE CONFIGURATION TABLE
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-20
System Pressure Operation
. . . . . . . . . . . . . . . . . . . . . . . .18
Bypass Controller Calibration . . . . . . . . . . . . . . . . . . . . . .18
SAFETY CONSIDERATIONS
GENERAL
The 3V control system VVT bypass controller (33ZCBC-01)
is a system static pressure controller that operates to maintain the
desired system duct pressure based on the system pressure set
point. The VVT bypass controller is used with a system of VVT
zone controllers. Zone controllers maintain precise temperature
control in the space by regulating the flow of conditioned air into
the space and operating an optional terminal fan.
As part of the 3V control system, the bypass controller is
designed to communicate using a Carrier protocol with a
Linkage Coordinator zone controller. One Linkage Coordina-
tor zone controller can coordinate up to 31 additional zone
controllers. The purpose of the Linkage Coordinator/zone
relationship is to provide an efficient data path for communica-
tion between the zone controllers, bypass controller, and
associated Carrier network air source. This arrangement makes
up the 3V control system.
A user interface is not required for everyday operation of
the bypass controller. A service person or building owner can
configure or operate the bypass controller through a Carrier
network user interface such as the System Pilot or Carrier
software.
INSTALLATION
General —
The bypass controller is used to control the
bypass damper actuator in the 3V control system. The purpose
of 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 constant
volume HVAC (heating, ventilation and air conditioning) unit
to supply variable volumes of air to the building. The system
bypasses 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/variable
temperature) system. If the damper selected is too large, it may
have to modulate more than necessary to react to system pres-
sure changes. The ability of the system to stay within a pressure
range is compromised. When the damper is undersized, the
capability of the damper to control the pressure may be com-
promised due to the inability to bypass enough air volume. An
undersized damper also creates higher airflow velocities which
add to the noise generated by the system.
SAFETY NOTE
Air-conditioning equipment will provide safe and reli-
able service when operated within design specifications.
The equipment should be operated and serviced only by
authorized personnel who have a thorough knowledge
of system operation, safety devices and emergency
procedures.
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 is
not disconnected. Electrical shock and personal injury
could result.
3V™ Control System
VVT® Bypass Controller
33ZC