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Carrier 38EH User Manual

Carrier 38EH
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Carrier 38EH Specifications

General IconGeneral
BrandCarrier
Model38EH
CategoryAir Conditioner
LanguageEnglish

Summary

Introduction and Safety

General System Components

Lists the four major components required for the Multiplex air conditioning system installation.

Safety Considerations for Installation

Highlights hazards of installation and servicing, emphasizing trained personnel and safety precautions.

Electrical Shock Hazard Warning

Warns to turn off main power before installation or servicing due to electrical shock risk.

Preparing for Installation

Jobsite and Equipment Preparation

Instructions for positioning the outdoor unit, checking clearances, and ensuring proper airflow.

Indoor Fan Coil Location Selection

Guidelines for selecting suitable walls for indoor fan coils, considering structural support and drainage.

Multiplex Control Box Location

Criteria for selecting an accessible and convenient location for the control box, with distance limits.

Making Wall Penetrations for Piping

Procedure for cutting holes in walls for refrigerant tubing, ensuring proper drainage angle.

Installation Steps

Mounting Bracket Installation

Instructions for securing the mounting bracket to wall studs or concrete for indoor fan coils.

Electrical Wiring Installation

Guidance on providing separate circuits, disconnects, and connecting wiring to the control box.

Piping and Drain Hose Preparation

Steps for shaping refrigerant tubing and preparing drain hoses for proper condensate flow.

Indoor Fan Coil Installation

Steps for hanging the indoor unit, ensuring it is level, and checking drain hose functionality.

Refrigerant Piping Connections

Instructions for using proper tubing, insulating lines, and making flare connections with AccuRater.

Outdoor Unit Wiring

Guidance to refer to separate instructions and system wiring diagrams for outdoor unit connections.

Multiplex Control Box Installation

Details on mounting the control box, connecting tubing and wiring from indoor/outdoor units.

System Purge and Evacuation

Purging and Evacuating the System

Procedure for purging air from the system using thermostats to energize valves and checking for leaks.

Refrigerant System Charging

Charging the Refrigerant System

Instructions on determining the correct refrigerant charge amount and using a weigh-in method.

System Start-Up Procedures

Crankcase Heater Energization

Procedure to energize the crankcase heater 24 hours before starting the outdoor unit.

Powering Up System Components

Instructions to turn on disconnect switches for indoor fan coils and the outdoor unit.

Setting Fan Switch

Guidance on setting the fan switch to ON or AUTO for desired operation.

Setting Thermostat Dial

Instructions to set the thermostat dial to the desired temperature for operation.

Setting Operation Mode

Instructions to set the selector switch to HEAT or COOL and operate for 15 minutes.

Indoor Fan Coil Speed Check

Verify that all indoor fan coil fan speeds are operating correctly.

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