Table Of Contents; Receiving; Unpacking; Handling - Greenheck DGX Installation, Operation And Maintenance Manual

Table of Contents

Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Hoisting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inspection and Maintenance During Storage . . . . . . . 3
Models and Capacities . . . . . . . . . . . . . . . . . . . . . . . . 3
Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation Issues
Provide and Install Switch S4 . . . . . . . . . . . . . . . . . 3
Install Condensate Drain (P Trap) . . . . . . . . . . . . . . 3
Service Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Additional Clearances for Packaged DX Units . . . . 3
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Compressed Refrigerant . . . . . . . . . . . . . . . . . . . . . 4
Safety Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Supplemental Installation, Operation and
Maintenance Manuals . . . . . . . . . . . . . . . . . . . . . . . 4
Subassemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DX System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Factory Installed Refrigeration System
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Compressor Compartment Components . . . . . . . . . . 7
Additional Control Components . . . . . . . . . . . . . . . 7
Typical Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . 8-9
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . 10
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . 10
Control Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Control Sequence/Variable Air Volume (optional) . 11
Pre Start-Up
Pre Start-Up Checklist . . . . . . . . . . . . . . . . . . . . . . 11
Special Tools Required: . . . . . . . . . . . . . . . . . . . . . 11
Start-Up Checklist . . . . . . . . . . . . . . . . . . . . . . 11-12
Electrical Start-Up Checklist . . . . . . . . . . . . . . . . . 12
Refrigeration System Start-Up Checklist . . . . . . . 12
Troubleshooting - Refrigeration Circuit . . . . . . . . 13-16
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 17
Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Annually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . . 18-19
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2
Packaged DX Module for Make-Up Air Unit

Receiving

This Packaged DX Module is installed as a component
of a make-up air unit and does not require any special
handling. Refer to the Receiving portion of the unit
IOM for complete instructions on receiving, unpacking
and handling.

Unpacking

The Packaged DX unit is shipped as a complete
installed unit. Protective coverings have been installed
on the face of the condenser coil that should be left in
place until installation of the unit is complete. The only
item that was shipped loose with the unit is the P Trap
kit (see below right). Verify that the P Trap kit has been
received. Refer to Unpacking instructions in unit IOM.

Handling

Units are to be rigged and moved by the lifting
brackets provided. Do not forklift. Refer to the
Handling portion of the unit IOM for complete
instructions on handling.

Hoisting

All units equipped with a Packaged DX Module are
provided with either four or six lifting lugs. When the
unit is being hoisted, all of the provided lugs must
be used for support. Four lifting lugs are on the four
corners of the unit, located at the base. In addition,
there may be two more lifting lugs located at the top
of the unit. The locations of those two top lugs varies
somewhat from unit to unit. Use spreader bars to
prevent damage to the cabinet.
Use spreader bars as shown to prevent damage to the
cabinet. If top-mounted lifting lugs are present, they
must be used in conjunction with the bottom-mounted
lifting lugs when hoisting the unit.
Lifting Details
Use lifting lugs on
all four corners.
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