Lennox SSB048H4S4

6/2013 507163-01
*2P62013* *P507163-01*
Page 1
2013 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause personal injury, loss of life, or
damage to property.
Installation and service must be performed by a licensed
professional installer (or equivalent) or a service agency.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
IMPORTANT
This unit must be matched with an indoor coil as speci
fied in Lennox SSB*H4 Product Specification bulletin.
Coils previously charged with HCFC-22 must be
flushed.
NOTICE TO INSTALLER
UNIT PLACEMENT
It is critical for proper unit operation to place outdoor unit on an
elevated surface as described in Unit Placement section on page 7.
BRAZING LINE SET TO SERVICE VALVES
It is imperative to follow the brazing technique illustrated starting on
page 12 to avoid damaging the service valve's internal seals.
INSTALLATION
INSTRUCTIONS
S-CLASS SSB*H4 Units
AIR CONDITIONER UNITS
507163-01
6/2013
Supersedes 506641-01
TABLE OF CONTENTS
Shipping and Packing List 1......................
General 1......................................
Unit Dimensions 2...............................
Model Number Identification 2....................
Unit Parts Arrangement 3........................
Operating Gauge Set and Service Valves 4.........
Recovering Refrigerant from Existing System 6.....
New Unit Placement 7...........................
Removing and Installing Panels 9.................
New or Replacement Line Set 10...................
Brazing Connections 12...........................
Flushing Line Set and Indoor Coil 15................
Installing Indoor Metering Device 16................
Leak Test Line Set and Indoor Coil 17...............
Evacuating Line Set and Indoor Coil 18.............
Electrical 19.....................................
Servicing Units Delivered Void of Charge 21.........
Unit Start-Up 21.................................
System Refrigerant 22............................
System Operation 25.............................
Maintenance 26..................................
Checklists 27....................................
Shipping and Packing List
Check the unit for shipping damage and listed times below
are intact. If damaged, or if parts are missing, immediately
contact the last shipping carrier.
1 - Assembled outdoor unit.
General
Two-stage S-Class SSB*H4 outdoor units use
HFC-410A refrigerant. This unit must be installed with a
matching indoor coil and line set as outlined in the Product
Specification bulletin. S-Class SSB*H4 outdoor units
are designed for use in expansion valve systems (TXV)
only. They are not designed to be used with other
refrigerant flow control devices. The Product Specification
bulletin lists a TXV kit that must be ordered separately.
Litho U.S.A.

Lennox SSB048H4S4 Specifications

General

Model	SSB048H4S4
Cooling Capacity (tons)	4
Refrigerant	R-410A
Voltage	208/230V
Phase	1
Compressor Type	Scroll
Sound Level (Outdoor Unit)	76 dB
Cooling Capacity	48000 BTU/h
Stages	Single

Summary

Notice to Installer

Unit Placement

Critical placement considerations for proper unit operation and installation.

Model Number Identification

Model Number Identification

Explanation of the alphanumeric code used to identify model numbers and their components.

Unit Parts Arrangement

Typical Unit Parts Arrangement

Diagram illustrating the location of control panel components and plumbing/electrical parts.

Operating Gauge Set and Service Valves

Torque Requirements

Specifies required torque values for various fasteners used during installation and servicing.

Using Manifold Gauge Set

Guidelines for selecting and using a manifold gauge set for refrigerant systems.

Operating Service Valves

Explains the function and operation of liquid and vapor line service valves.

Recovering Refrigerant from Existing System

Refrigerant Recovery Methods

Details two methods for recovering HCFC-22 refrigerant from existing systems.

New Unit Placement

Positioning Considerations

Factors to consider when positioning the unit, including sound ordinances and window placement.

Placing Unit on Slab

Elevating the Unit

Unit Placement and Stabilizing

Outside Unit Placement Details

Slab Mounting and Stabilizing Unit

New or Replacement Line Set

Refrigerant Line Set

Information on installing or replacing existing refrigerant line sets, including compatibility and sizing.

Brazing Connections

Brazing Procedures and Safety

Outlines procedures and safety precautions for brazing line set connections to service valves.

Brazing Procedures

Cut and Debur

Cap and Core Removal

Attach Manifold Gauge Set

Brazing Procedures (Continued)

Wrap Service Valves

Flow Nitrogen

Braze Line Set

Flushing Line Set and Indoor Coil

Fixed Orifice Removal Procedure

Expansion Valve Removal Procedure

Connect Gauges and Equipment for Flushing

Flushing Line Set

Installing Indoor Metering Device

Indoor Expansion Valve Installation

Steps for installing the expansion valve on the liquid line orifice housing.

Equalizer Line Installation

Sensing Bulb Installation

Leak Test Line Set and Indoor Coil

Test for Leaks

Procedure for leak testing the line set and indoor unit after connections are made.

Evacuating Line Set and Indoor Coil

Connect Gauge Set

Evacuate the System

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

Electrical

Size Circuit and Install Disconnect Switch

Install Thermostat

Unit Low Voltage Connections

Servicing Units Delivered Void of Charge

System Servicing Procedure

Steps for cleaning, evacuating, and charging a system delivered without refrigerant.

Unit Start-Up

Gauge Set Connections for Testing and Charging

System Refrigerant Procedures

Outlines procedures for connecting gauges, checking airflow, and adjusting refrigerant charge.

Refrigerant Charging

When to Charge

Charging Methods Overview

Charge Methods

Weigh-In Method

Approach TXV Charge Method

Using the approach method to determine and adjust refrigerant charge for TXV systems.

Subcooling TXV Charge Method

Using the subcooling method to determine and adjust refrigerant charge for TXV systems.

System Operation

Second-Stage Operation

Field Operational Checklist

Unit Readings

Start-Up and Performance Checklist

Checklist for verifying electrical connections, airflow, and refrigerant charge.