CaptiveAire DXM1-1 Installation Manual

Direct Expansion Coil

Modules

Installation, Operation, and Maintenance Manual

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RECEIVING AND INSPECTION

ARNING!!

Direct Expansion Coil Module

Upon receiving unit, check for any interior and exterior damage, and if found, report it immediately to the carrier. Also check that all accessory items are accounted for and are damage free.

Direct Expansion Coil

Installation of this module should only be performed by a qualified professional who has read and understands these instructions and is familiar with proper safety precautions. Improper installation poses serious risk of injury due to electric shock, and other potential hazards. Read this manual thoroughly before installing or servicing this equipment. ALWAYS disconnect power prior to working on module.

. This document is the property of the owner of this equipment and is required for future maintenance. Leave this document with the owner when installation or service is complete.

February 2010 Rev. 9

A0011048

TABLE OF CONTENTS

WARRANTY ............................................................................................................................................ 4

INSTALLATION ....................................................................................................................................... 5

Mechanical .......................................................................................................................................... 5

Site Preparation .............................................................................................................................. 5

Assembly ........................................................................................................................................ 5

Plumbing Connections .................................................................................................................... 6

Compressor Installation and Connection ......................................................................................... 6

Roof Mount Installation with Blower Only Unit .................................................................................. 9

Indoor Installation with Direct Fired Unit ........................................................................................... 9

Electrical ........................................................................................................................................... 10

OPERATION ......................................................................................................................................... 11

Start Up ............................................................................................................................................. 11

Special Tools Required ................................................................................................................. 11

Start Up Procedure ....................................................................................................................... 11

Component Description ..................................................................................................................... 12

Troubleshooting ................................................................................................................................ 13

Troubleshooting Chart ................................................................................................................... 13

MAINTENANCE .................................................................................................................................... 14

General Maintenance ........................................................................................................................ 14

Every 6 months ................................................................................................................................. 14

Yearly................................................................................................................................................ 14

Start-Up and Maintenance Documentation ........................................................................................ 15

Job Information ............................................................................................................................. 15

DX coil Information ........................................................................................................................ 15

Maintenance Record ..................................................................................................................... 15

Factory Service Department .......................................................................................................... 15

WARRANTY

This equipment is warranted to be free from defects in materials and workmanship, under normal use and service, for a period of 12 months from date of shipment. This warranty shall not apply if:

1. The equipment is not installed by a qualified installer per the MANUFACTURER’S installation instructions shipped with the product,

2. The equipment is not installed in accordance with federal, state and local codes and regulations,

3. The equipment is misused or neglected,

4. The equipment is not operated within its published capacity,

5. The invoice is not paid within the terms of the sales agreement.

The MANUFACTURER shall not be liable for incidental and consequential losses and damages potentially attributable to malfunctioning equipment. Should any part of the equipment prove to be defective in material or workmanship within the 12-month warranty period, upon examination by the MANUFACTURER, such part will be repaired or replaced by MANUFACTURER at no charge. The BUYER shall pay all labor costs incurred in connection with such repair or replacement. Equipment shall not be returned without MANUFACTURER’S prior authorization and all returned equipment shall be shipped by the BUYER, freight prepaid to a destination determined by the MANUFACTURER.

INSTALLATION

Sloped

Air

It is imperative that this unit is installed and operated with the designed airflow and electrical supply in accordance with this manual. If there are any questions about any items, please call the service department at 1-866-784-6900 for warranty and technical support issues.

Mechanical

WARNING: DO NOT RAISE VENTILATOR BY THE INTAKE HOOD, FILTER TRACKS, OR PIPING – USE LIFTING LUGS PROVIDED OR A SLING

Site Preparation

1. Provide clearance around installation site to safely rig and lift equipment into its final position. Supports must adequately support equipment. Refer to manufacturer’s estimated weights.

2. Compressor Unit must be within 75 Ft of air handler unit.

3. Compressor Unit must not be near intake of air handler unit.

4. Consider general service and installation space when locating unit.

Assembly

There are several items shipped loose with the DX coil modules. These items include sheet metal screws, nuts and bolts, and foam gaskets. It is important to know where the coil is to be installed. For direct fired heaters and electric coil modules, the DX coil module mounts to the end discharge side of the air handling unit. This keeps any refrigerant leaking from burning, avoiding the creation of toxic gasses. Place caulk on the outside of any external screws used to prevent water leaks.

Upon unit arrival, follow the following procedure to assemble the DX coil. For use with a direct fired or electric heater:

1. Attach the DX coil module to the discharge side of the air handler using the nuts, bolts and angle bracket washers included. Apply the foam gasket to the air handler to ensure that there is a liquid tight seal formed between the DX coil module and the air handling unit.

2. Attach the down discharge plenum to the end of the DX coil module using the supplied foam gasket, nuts and bolts. Or, attach ductwork directly to the end of the unit using sheet metal screws following SMACNA guidelines.

For use without a direct fired or electric heater:

1. Attach the DX coil module to the intake side of the air handler using the nuts, bolts and

Handler

Coil Module

Intake Hood

angle washers included. Apply the foam gasket to the air handler to ensure that there is a liquid tight seal formed between the DX coil module and the air handling unit.

Curb Rail

2. Complete installation of ductwork per SMACNA standard installation.

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