Lennox 13ACD-018-230 User Manual

506694-01 Issue 1720 Page 1 of 16
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INSTALLATION INSTRUCTIONS
13ACD Split System Air Conditioner
with Dry Nitrogen Holding Charge
215 Metropolitan Drive
West Columbia, SC 29170
This manual must be left with the homeowner for future reference.
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
Table of Contents
General ........................................................................2
Unit Dimensions - inches (mm) ...................................2
Parts Arrangement.......................................................2
Shipping and Packing List ...........................................3
Torque Requirements ..................................................3
Operating Gauge Set and Service Valves ...................3
Recovering Refrigerant from Existing System ............. 4
New Outdoor Unit Placement ......................................5
Replacement Line Set .................................................6
Brazing Connections ...................................................7
Removing Existing Metering Device and Flushing Line
Set and Indoor Coil ....................................................10
Installing New Indoor Metering Device ...................... 11
Leak Test Line Set and Indoor Coil ............................ 12
Evacuating Line Set, Indoor Coil and Outdoor Unit ... 13
Electrical ....................................................................14
Servicing Outdoor Unit Delivered Void of Nitrogen
Charge .......................................................................15
Maintenance ..............................................................15
This unit is factory-charged with dry nitrogen. The
unit is intended for installation in existing HCFC-22
systems. Carefully follow all installation procedures.
Open both service valves to evacuate system. This
unit is constructed without a factory installed lter drier.
Field-provided liquid line lter drier should be installed
per Figure 6A.
NOTE
Installation or repairs made by unqualied persons can
result in hazards to you and others. Installation MUST
conform with local building codes or, in the absence of
local codes, with the National Electrical Code NFPA
70/ANSI C1-1993 or current edition and Canadian
Electrical Code Part 1 CSA C22.1.
WARNING
Improper selection of a matching indoor unit and
a matching metering device, improper installation,
adjustment, alteration, service or maintenance may void
the warranty. The qualied installer or agency must use
factory-authorized kits or accessories when modifying
this products. Refer to the individual instructions
packaged with the kits or accessories when installing.
CAUTION
These instructions are intended as a general guide and
do not supersede national, state or local codes in any
way.
NOTE
This product contains a chemical known to the State
of California to cause cancer, birth defects or other
reproductive harm.
WARNING

Lennox 13ACD-018-230 Specifications

General

SEER Rating	13
Refrigerant	R-410A
Compressor Type	Single-stage
Voltage	208/230V
Phase	1
Sound Level	76 dB
Cooling Capacity	1.5 Tons (18, 000 BTU/h)
Energy Efficiency Ratio (EER)	11.0

Summary

Operating Gauge Set and Service Valves

Using Manifold Gauge Set

Details the use of a manifold gauge set for system checks and ensures use of low-loss fittings.

Operating Service Valves

Explains how to operate liquid and vapor line service valves for various procedures.

Accessing Service Ports

Procedure for accessing and using service ports on both angle and ball-type service valves.

Reinstalling Stem Caps

Instructions for properly reinstalling service valve stem caps using torque or manual tightening.

Recovering Refrigerant

Disconnect Power

Ensures all power to the outdoor unit is disconnected before proceeding with recovery.

Connect Manifold Gauge Set

Details connecting a gauge set, recovery cylinder, and machine to the unit's service ports.

Refrigerant Recovery Methods

Outlines two methods for removing refrigerant, depending on system valve configuration.

Outdoor Unit Placement

Installation Clearances

Specifies required clearances around the outdoor unit for proper operation and airflow.

Slab and Mounting Guidelines

Provides instructions for mounting the unit on a slab or structure, including slope.

Refrigerant Line Set

Line Set Requirements

Details recommended line set sizes and types for different unit models.

Long Line Set Considerations

Provides guidance and contact information for installing line sets longer than 50 feet.

Brazing Connections

Safety Precautions for Brazing

Highlights safety warnings and precautions during brazing operations, including handling hazardous materials.

Brazing Alloy Recommendations

Specifies suitable silver alloy brazing rods for copper-to-copper and other metal connections.

Line Preparation for Brazing

Steps for cutting, deburring, and preparing refrigerant lines and removing valve cores.

Gauge Set Attachment for Brazing

Connects manifold gauge set for brazing using nitrogen flow for protection.

Brazing Procedure

Details the steps for wrapping valves, brazing the line set, and cooling the joints.

Metering Device and Flushing

Removing Existing Metering Device

Procedure for removing existing fixed orifice or expansion valve metering devices.

Flushing Line Set and Indoor Coil

Instructions for flushing the line set and indoor coil with clean refrigerant.

Installing New Indoor Metering Device

Indoor Expansion Valve Installation

Details the installation of an expansion valve at the indoor coil, including bulb placement.

Fixed Orifice (RFC) Device Installation

Provides guidance for installing a fixed orifice device, referencing catalog numbers.

Leak Test and Evacuation

Leak Test Procedure

Steps for connecting gauges and testing the line set and indoor coil for leaks.

Evacuating the System

Procedure for evacuating the line set, indoor coil, and outdoor unit to the required micron level.

Electrical Connections

Wiring Compliance

Emphasizes adherence to national and local electrical codes for wiring.

Circuit Size and Disconnect

Guidelines for sizing circuits, disconnect switches, and fuses/breakers.

Control Wiring

Illustrates low-voltage wiring for thermostat and unit connections.

Unit Servicing and Maintenance

Servicing Void of Nitrogen Charge

Procedure for servicing the unit if it is delivered without its factory nitrogen charge.

Outdoor Unit Maintenance

Routine checks for the outdoor unit fan motor, connections, voltage, and amp draw.

Indoor Unit Maintenance

Checks for indoor unit filters, blower motor, and connections.

Indoor Coil Maintenance

Instructions for cleaning the indoor coil and checking lines for leaks.

Start-Up and Performance Checklist

Job Information

Fields for recording job details, installer information, and unit identification.

Performance Checks

Checklist items for electrical connections, airflow, temperatures, and pressures.