Carrier 50TC-A04 User Manual

Installation Instructions
NOTE: Read the entire instruction manual before starting
the installation
TABLE OF CONTENTS
SAFETY CONSIDERATIONS .................... 2
Rated Indoor Airflow .......................... 3
INSTALLATION ............................... 5
Jobsite Survey ................................ 6
Step 1 - Plan for Unit Location .................. 6
Roof Mount ............................... 6
Step 2 - Plan for Sequence of Unit Installation ...... 7
Curb-Mount Installation ..................... 7
Pad-Mount Installation ...................... 7
Frame-Mount Installation .................... 7
Step 3 - Inspect Unit ........................... 7
Step 4 - Provide Unit Support ................... 7
Roof Curb Mount .......................... 7
Slab Mount (Horizontal Units Only) ........... 7
Alternate Unit Support
(In Lieu of Curb or Slab Mount) .............. 7
Step 5 - Field Fabricate Ductwork ................ 9
For Units with Accessory Electric Heaters ...... 9
Step 6 - Rig and Place Unit ..................... 9
Positioning on Curb ....................... 10
Step 7 - Convert to Horizontal and Connect
Ductwork ........................... 10
Step 8 - Install Outside Air Hood ............... 11
Economizer and Two Position Damper Hood
Package Removal and Setup -- Factory Option .. 11
Economizer Hood and Two-Position Hood ..... 11
Step 9 - Install External Condensate Trap
and Line ............................ 12
Step 10 - Make Electrical Connections ........... 12
Field Power Supply ........................ 12
Units with Factory-Installed
Non-Fused Disconnect ..................... 13
Units without Factory-Installed
Non-Fused Disconnect ..................... 14
All Units ................................ 14
Convenience Outlets ....................... 14
Factory-Option Thru-Base Connections ...... 16
Units without Thru-Base Connections ......... 16
Field Control Wiring ....................... 16
Thermostat ............................... 16
Unit without Thru-Base Connection Kit ....... 17
Heat Anticipator Settings ................... 17
Electric Heaters ............................ 17
Single Point Boxes & Supplementary Fuses .... 18
Single Point Boxes without Fuses ............ 18
Low-Voltage Control Connections ............ 18
Humidi-MiZer <n_Control Connections .......... 19
Humidi-MiZer - Space RH Controller ........ 19
EconoMiSer X (Factory-Installed Option) ....... 19
PremierLink TM(Factory Option) ............... 21
Supply Air Temperature (SAT) Sensor ......... 24
Outdoor Air Temperature (OAT) Sensor ....... 24
EconoMi$er2 ............................. 24
Field Connections .......................... 24
Space Sensors ............................ 26
Connect Thermostat ....................... 26
Configure the Unit for Thermostat Mode ...... 26
Economizer Controls ........................ 27
Indoor Air Quality (CO2 sensor) ............. 27
Outdoor Air Quality Sensor ................. 27
Space Relative Humidity Sensor or
Humidistat Connections .................... 28
Smoke Detector/Fire Shutdown (FSD) ......... 28
Filter Status Switch ........................ 29
Supply Fan Status Switch ................... 29
Remote Occupied Switch ................... 29
Power Exhaust (output) ..................... 29
CCN Communication Bus .................. 29
RTU Open Control System ................... 31
Supply Air Temperature (SAT) Sensor ......... 34

Carrier 50TC-A04 Specifications

General

Brand	Carrier
Model	50TC-A04
Category	Air Conditioner
Language	English

Summary

Installation Process Overview

Jobsite Survey and Location Planning

Conduct site survey, check codes, and plan unit location and support.

Unit Support and Installation Sequence

Details on roof curb, slab, alternate supports, and installation sequence.

Ductwork, Rigging, and Positioning

Fabricate ductwork, rig unit safely, and position correctly on curb.

Condensate and Air Hood Installation

Install condensate trap/line and assemble outside air hood.

Electrical Connections

Making main power supply connections and installing disconnect switch.

Safety Precautions

Electrical Safety Hazards

Critical warnings for preventing electrical shock during installation and service.

General Operational Safety

Hazards related to unit operation, refrigerant, and environmental concerns.

Cut Hazard

Cautionary measures for handling sharp sheet metal edges.

Control System Wiring and Configuration

Field Control Wiring

Routing control wires, connecting thermostats, and low-voltage wiring.

PremierLink™ Controller

PremierLink controller installation, wiring, and configuration for thermostat mode.

Economizer Controls

Installation and wiring of economizer sensors and controls for IAQ and enthalpy.

RTU Open Control System

Overview of RTU Open board, wiring, and protocols for building automation.

Component Specifics and Electrical Sizing

Model Number Nomenclature

Explanation of the 50TC model number coding system.

Electric Heaters

Installation of accessory electric heaters and related components.

Unit Wire/Fuse or HACR Breaker Sizing Data

Tables for selecting correct wire, fuse, or HACR breaker sizes.

Start-Up, Troubleshooting, and Accessories

Local Access and Troubleshooting

Using local access ports and troubleshooting RTU Open communication.

Install Accessories

Instructions for installing various optional accessories like curbs and dampers.

UNIT START-UP CHECKLIST

Comprehensive checklist for pre-startup and startup verification procedures.

HUMIDIMIZER START-UP

Step-by-step startup procedures for the Humidimizer option on 50TC-B07 units.