Carrier Performance 50VR-K User Manual

5
Installation Instructions
IMPORTANT: Effective January 1, 2015, all split system and packaged
air conditioners must be installed pursuant to applicable regional
efficiency standards issued by the Department of Energy.
NOTE: Read the entire instruction manual before starting the
installation.
NOTE: Installer: Make sure the Owner’s Manual and Service
Instructions are left with the unit after installation.
A09033
Fig. 1 – Unit 50VR
Table of Contents
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Receiving and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Identify Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Inspect Shipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Slab Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging/Lifting of Unit (See Fig. 5) . . . . . . . . . . . . . . . . . . . . . . 8
Configuring Units for Downflow (Vertical) Discharge . . . . . . . 9
High-Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Special Procedures for 208-V Operation . . . . . . . . . . . . . . . . . 10
Control Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Standard Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Transformer Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pre-Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Checking and Adjusting Refrigerant Charge . . . . . . . . . . . . . . 13
Indoor Airflow and Airflow Adjustments . . . . . . . . . . . . . . . . 13
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Demand Defrost Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Indoor Blower and Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Outdoor Coil, Indoor Coil, and Condensate Drain Pan . . . . . . 28
Outdoor Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Electrical Controls and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 28
Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Evaporator Airflow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Metering Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Loss of Charge Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
High-Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Copeland Scroll Compressor (Puron [R-410A] Refrigerant) . . 29
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Compressor Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Servicing Systems on Roofs with Synthetic Materials. . . . . . . 30
Synthetic Roof Precautionary Procedure . . . . . . . . . . . . . . . . . 30
Liquid Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Puron (R-410A) Refrigerant Charging . . . . . . . . . . . . . . . . . . . 30
Loss of Charge Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Check Defrost Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Start-up Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Safety Considerations
Improper installation adjustment, alteration, service, maintenance, or use
can cause explosion, fire, electrical shock, or other conditions which
may cause death, personal injury, or property damage. Consult a
qualified installer, service agency, or your distributor or branch for
information or assistance. The qualified installer or agency must use
factory-authorized kits or accessories when modifying this product Refer
to the individual instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Use quenching cloth for brazing operations. Have a fire
extinguisher available. Read these instructions thoroughly and follow all
warnings or cautions included in literature and attached to the unit.
Consult local building codes, the current editions of the National
Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the Canadian electrical Code
CSA C22.1.
Recognize safety information. This is the safety-alert symbol . When
you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury. Understand these signal words;
DANGER, WARNING, and CAUTION. These words are used with the
safety-alert symbol. DANGER identifies the most serious hazards which
will result in severe personal injury or death. WARNING signifies
hazards which could result in personal injury or death. CAUTION is
used to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
50VR-K
Performance™ 15+ SEER2 2-Stage Packaged Heat
Pump
System with Puron® (R-410A) Refrigerant
Single and Three Phase
2-5 Nominal Tons (Sizes 24-60)

Carrier Performance 50VR-K Specifications

General

Brand	Carrier
Model	Performance 50VR-K
Category	Heat Pump
Language	English

Summary

Installation Instructions

Safety Considerations

General safety warnings and precautions to prevent personal injury, death, or property damage.

Introduction

Overview of the packaged heat pump system and its intended use.

Receiving and Installation

Guidance on unpacking, inspecting, and preparing the unit for installation.

Step 1 - Check Equipment

Procedures for inspecting the unit for shipping damage and verifying contents.

Step 2 - Provide Unit Support

Instructions for securing the unit to its mounting surface, such as a roof curb or slab.

Slab Mount

Guidelines for placing the unit on a solid, level pad above grade.

Required Clearances

Specifications for minimum clearances around the unit for operation and servicing.

Step 3 - Provide Clearances

Ensuring adequate space around the unit for airflow and maintenance access.

Step 4 – Field-Fabricate Ductwork

Instructions for designing and installing ductwork to the unit.

Step 5 - Rig and Place Unit

Guidelines for safely lifting and positioning the unit.

Step 6 - Connect Condensate Drain

Procedure for connecting the condensate drain line and trap.

Step 7 - Install Duct Connections

Requirements for duct system design, sizing, and installation.

Configuring Units for Downflow (Vertical) Discharge

Steps to reconfigure the unit for vertical discharge airflow.

Step 8 - Install Electrical Connections

Instructions for making safe and proper electrical connections to the unit.

High-Voltage Connections

Details on connecting the main power supply to the unit.

Special Procedures for 208-V Operation

Specific adjustments for operating the unit on 208V power.

Control Voltage Connections

Guidance on connecting low-voltage control wires from the thermostat.

Transformer Protection

Information on protecting the unit's transformer from shorts or overloads.

Pre-Start-Up and Operation

Step 1 - Check Cooling and Heating Control Operation

Verifying proper operation of thermostat and system controls.

Step 2 - Check for Refrigerant Leaks

Procedures for detecting and repairing refrigerant leaks.

Checking and Adjusting Refrigerant Charge

Procedures for verifying and adjusting the system's refrigerant charge.

Indoor Airflow and Airflow Adjustments

Guidance on checking and adjusting indoor airflow for optimal performance.

Sequence of Operation

Detailed explanation of how the unit operates in different modes.

Defrost Mode

Explanation of the automatic defrost cycle operation.

Demand Defrost Mode

Configuration and operation of the demand defrost system.

Maintenance and Component Information

Air Filter

Procedures for inspecting, cleaning, or replacing the air filter.

Indoor Blower and Motor

Instructions for cleaning and maintaining the indoor blower motor and wheel.

Outdoor Coil, Indoor Coil, and Condensate Drain Pan

Maintenance steps for cleaning coils and drain pan.

Outdoor Fan

Guidance on inspecting and cleaning the outdoor fan and grille.

Electrical Controls and Wiring

Annual inspection and checking of electrical controls and wiring connections.

Refrigerant Circuit

Inspection of refrigerant tubing connections for leaks.

Evaporator Airflow

Checking evaporator airflow and ensuring filter is clean.

Metering Device

Description of the fixed orifice and TXV metering devices used.

Pressure Switches

Explanation of pressure switches and their function in the refrigeration circuit.

Loss of Charge Switch

Function and operation of the loss of charge switch.

High-Pressure Switch

Details on the high-pressure switch and its role in system protection.

Copeland Scroll Compressor (Puron [R-410A] Refrigerant)

Information about the compressor designed for R-410A refrigerant.

Refrigerant

Safety and handling information for Puron (R-410A) refrigerant.

Compressor Oil

Details on the type of oil used and precautions for handling.

Servicing Systems on Roofs with Synthetic Materials

Precautions for working on units installed on synthetic roofing.

Synthetic Roof Precautionary Procedure

Steps to protect roofing materials from compressor oil exposure.

Liquid Line Filter Drier

Information on replacing the filter drier for Puron (R-410A) systems.

Puron (R-410A) Refrigerant Charging

Procedure for charging the system with R-410A refrigerant.

Check Defrost Thermostat

Locating and checking the defrost thermostat's operation.

Troubleshooting Guide

Troubleshooting Chart

Guide to diagnosing and resolving common unit operational issues.

Start-Up Checklist

Preliminary Information

Fields for recording unit model, serial number, date, and technician.

Pre-Start-Up

Checklist items to verify before initiating unit start-up.

Start-Up

Sections for recording electrical, temperature, and pressure data during start-up.