Carrier UC Open XP Installation And Start-Up Instructions Manual

Installation and Start-Up Instructions

TABLE OF CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Service Area Requirements . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12
UC Open XP Control System . . . . . . . . . . . . . . . . . . . . 10
Control System Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 10
To Wire the Controller to the Network . . . . . . . . . . . 11
COMPONENT INSTALLATION AND
FIELD WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-22
Wiring Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Supply-Air Temperature Sensor . . . . . . . . . . . . . . . . . 12
Fan Status Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Fan Status Switch Adjustment. . . . . . . . . . . . . . . . . . . 14
Fan Status Switch Field Installation . . . . . . . . . . . . . 14
Return-Air Temperature Sensor . . . . . . . . . . . . . . . . . 15
Outdoor-Air Temperature Sensor . . . . . . . . . . . . . . . . . 15
Mixed-Air Temperature Sensor . . . . . . . . . . . . . . . . . . 15
Low-Temperature Thermostat . . . . . . . . . . . . . . . . . . . 15
Preheat Temperature Sensor . . . . . . . . . . . . . . . . . . 15
Filter Status Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Steam/Water Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Field-Supplied Two-Position Water Valves . . . . . . . 18
Mixing Box Damper Actuators . . . . . . . . . . . . . . . . . . . 18
Exhaust Damper Actuator . . . . . . . . . . . . . . . . . . . . . . . 19
Face and Bypass Damper Actuator . . . . . . . . . . . . . . 19
Variable-Frequency Drives . . . . . . . . . . . . . . . . . . . . . . 19
DX Cooling Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Electric Heat Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Electric Heat Sequencer. . . . . . . . . . . . . . . . . . . . . . . . . . 21
SCR Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Vernier Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 22,23
Communication LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
UC OPEN XP SPECIFICATIONS. . . . . . . . . . . . . . . . . . 23
UC OPEN XP IO SPECIFICATIONS . . . . . . . . . . . . . . . 24

SAFETY CONSIDERATIONS

IMPORTANT: This equipment generates, uses, and
can radiate radio frequency energy and if not installed
and used in accordance with these instructions may
cause radio interference. The equipment has been tested
and complies with the limits of a Class A computing
device as defined by FCC (Federal Communications
Commission) regulations, Subpart J of Part 14, which
are designed to provide reasonable protections against
such interference when operated in a commercial
environment.
Installation and start-up of air-handling equipment can be
hazardous due to system pressure, rotating parts, and electrical
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53390010-01
UC Open XP/UC Open XP IO
Weathertight Outdoor Air Handlers
components. Only trained and qualified service personnel
should install, start-up or service air-conditioning equipment.
Page
precautions in the literature, tags and labels attached to the unit,
and other safety precautions that may apply.
Standards Institute) Z223.1 or latest version. Wear a hard hat,
safety glasses, and work gloves.
Printed in U.S.A.
for 39MN,MW Indoor and
When working on air-conditioning equipment, observe
Follow all safety codes, including ANSI (American National
WARNING
Disconnect all power to the unit, then lock out and safety
tag all disconnects before performing maintenance or
service. Unit may automatically start if power is not
disconnected. Electrical shock and personal injury could
result.
WARNING
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and gog-
gles and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from sys-
tem using both high-pressure and low pressure ports.
c. Traces of vapor should be displaced with nitrogen
and the work area should be well ventilated. Refrig-
erant in contact with an open flame produces toxic
gases.
d. Cut component connection tubing with tubing cutter
and remove component from unit. Use a pan to catch
any oil that may come out of the lines and as a gage
for how much oil to add to the system.
e. Carefully unsweat remaining tubing stubs when nec-
essary. Oil can ignite when exposed to torch flame.
Failure to follow these procedures may result in personal
injury or death.
CAUTION
DO NOT re-use compressor oil or any oil that has been
exposed to the atmosphere. Dispose of oil per local codes
and regulations. DO NOT leave refrigerant system open to
air any longer than the actual time required to service the
equipment. Seal circuits being serviced and charge with
dry nitrogen to prevent oil contamination when timely
repairs cannot be completed. Failure to follow these proce-
dures may result in damage to equipment.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Form 39M-12SI Pg 1 10-12 Replaces: 39M-3SI