Lennox 13ACD-048-230 - 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

Summary

Operating Gauge Set and Service Valves

Operating Service Valves

Explains the function and operation of liquid and vapor line service valves, including angle and ball types.

To Access Service Port

Provides step-by-step instructions for accessing and connecting to the service ports on the unit.

Recovering Refrigerant from Existing System

DISCONNECT POWER

Emphasizes the critical step of disconnecting all electrical power before starting refrigerant recovery.

CONNECT MANIFOLD GAUGE SET

Guides the user on connecting the manifold gauge set, recovery cylinder, and machine for refrigerant recovery.

RECOVERING REFRIGERANT

Outlines two methods for removing refrigerant, detailing specific procedures for different system configurations.

Replacement Line Set

Refrigerant Line Set

Details refrigerant line set requirements, sizing, and recommendations for replacement.

Brazing Connections

Brazing Procedure

CUT AND DEBUR

CAP AND CORE REMOVAL

ATTACH THE MANIFOLD GAUGE SET FOR BRAZING LINE SETS TO LIQUID AND SUCTION; VAPOR LINE SERVICE VALVES

Connecting the manifold gauge set with nitrogen for the brazing procedure.

Brazing Procedure (cont.)

WRAP SERVICE VALVES

FLOW NITROGEN

BRAZE LINE SET

The actual process of brazing the line set connections to the service valves.

Removing Existing Metering Device and Flushing Line Set and Indoor Coil

TYPICAL EXISTING FIXED ORIFICE REMOVAL PROCEDURE (UNCASED COIL SHOWN)

TYPICAL EXISTING EXPANSION VALVE REMOVAL PROCEDURE (UNCASED COIL SHOWN)

CONNECT GAUGES AND EQUIPMENT FOR FLUSHING PROCEDURE

FLUSHING LINE SET

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

Installing New Indoor Metering Device

INDOOR EXPANSION VALVE INSTALLATION

Step-by-step guide for installing an indoor expansion valve, including connections and torque.

SENSING BULB INSTALLATION

EQUALIZER LINE INSTALLATION

FIXED ORIFICE (RFC) DEVICE INSTALLATION

Instructions for installing a fixed orifice (RFC) metering device at the indoor coil.

Leak Test Line Set and Indoor Coil

TEST FOR LEAKS

Procedure to test the line set and indoor coil for leaks using a trace amount of refrigerant and nitrogen.

Evacuating Line Set, Indoor Coil and Outdoor Unit

CONNECT GAUGE SET

EVACUATE THE SYSTEM

Detailed steps for evacuating the system to the required vacuum level using nitrogen and a vacuum pump.

Electrical

SIZE CIRCUIT AND INSTALL DISCONNECT SWITCH

CONTROL WIRING

TYPICAL LOW VOLTAGE CONTROL WIRING

Servicing Outdoor Unit Delivered Void of Nitrogen Charge

Maintenance

Outdoor Unit

Indoor Unit

Indoor Coil

Start-Up and Performance Checklist

Lennox 13ACD-048-230 Specifications

General

Brand	Lennox
Model	13ACD-048-230
Category	Air Conditioner
Language	English