Lennox HS26-042

SERVICE
HS26
UNIT
INFORMATION
Page 1
1996 Lennox Industries Inc.
Corp. 9622−L12
Litho U.S.A.
EARLY/LATE
MODEL SERIES
Revised 04−2002
HS26 SERIES UNITS
The HS26 is a high efficiency residential split−system con
densing unit which features a scroll compressor. Early
model HS26 units (−261,−311,−411, and −461) are available
in sizes ranging from 2 through 3−1/2 tons. Late model
HS26 units (−018, −024, −030, −036, −042, −048 and −060)
are available in sizes ranging from 1−1/2 through 5 tons.
The series is designed for use with an expansion valve in
the indoor unit.This manual is divided into sections which
discuss the major components, refrigerant system, charg
ing procedure, maintenance and operation sequence. In
formation in this manual covers both early and late model
HS26 units.
All specifications in this manual are subject to change.
Late Model
HS26 shown
ELECTRICAL DATA (Early Model)
SPECIFICATIONS (Early Model)
Model No. HS26−261 HS26−311 HS26−411 HS26−461
Outdoor
Coil
Condenser
Fan
HCFC−22 (charge furnished)
Face area (sq.ft.)
Tube diameter (in.)
No. of Rows
Fins per inch
Diameter (in.)
No. of Blades
Motor hp
Cfm
RPM
Watts
Liquid line connection
Suction line connection
HS26−261 HS26−311 HS26−411 HS26−461
Model No.
Line voltage data − 60hz./1 phase
Compressor
Rated load amps
Power factor
Locked rotor amps
Condenser
Fan Motor
Full load amps
Locked rotor amps
Max fuse or c.b. size (amps)
*Minimum circuit ampacity
outer / inner
*Refer to National Electrical Code Manual to determine wire, fuse and disconnect size requirements.
NOTE − Extremes of operating range are plus 10% and minus 5% of line voltage
11.8/5.4 15.9/5.5 15.9/15.3 21.6/20.8
3/8 3/8 3/8 3/8
1.36 1.36 2.0 2.0
20 20 20 20
24 24 24 24
3333
1/6 1/6 1/6 1/6
3150 3150 3000 3230
820 820 820 820
210 210 230 205
7lbs. 11oz. 8lbs. 1oz. 9lbs. 0oz. 11lbs. 3oz.
3/8 3/8 3/8 3/8
3/4 3/4 3/4 11/8
208/230V 208/230V 208/230V 208/230V
11.6 13.5 18.0 20
.96 .96 .96 .97
62.5 76.0 90.5 107
1.1 1.1 1.1 1.1
2.0 2.0 2.0 2.0
25 30 40 45
15.6 18.0 23.6 26.1
*Refrigerant charge sufficient for 25 ft. (7.6 m) length of refrigerant lines.

Lennox HS26-042 Specifications

General

Brand	Lennox
Model	HS26-042
Category	Air Conditioner
Language	English

Summary

Early Model Specifications

Early Model Electrical Data

Late Model Specifications

Technical Specs

Late Model Electrical Data

Electrical Parameters

Scroll Compressor

Design and Operation

Description of the scroll compressor's design and the gas compression process.

Scroll Compressor Operation

Visualizing the Orbiting Motion

Diagrams illustrating the four stages of gas compression by the orbiting scroll.

Unit Components and Safety

Key Components & Warnings

Description of transformer, contactor, and safety warnings for electrical shock and ESD.

Control Components

Time Delay and Timed Off Controls

Compressor Specifications

Early and Late Model Specs

Compressor High Temperature Limit

Replacement Procedure (Early Models)

Step-by-step instructions for replacing the high temperature limit switch.

Unit Electrical Controls

Pressure Switches and Dual Capacitor

Service Valve Operation

Liquid Line Service Valve

Instructions for accessing and operating the liquid line service valve.

Suction Line Service Valve (Early Models)

Details on accessing and operating the non-backseating suction line service valve.

Service Valve Procedures

Suction Line Ball Type Valve

Instructions for operating the ball-type suction line service valve on HS26-060.

Late Model Service Valves

Access and operation procedures for late model liquid and suction line service valves.

Charging and System Preparation

Unit Charging Procedures

Procedure for charging the unit with R-22 refrigerant, including line set adjustments.

Leak Testing and Evacuation

Steps for performing leak testing and evacuating the system to remove non-condensables.

System Evacuation and Charging

Evacuation Procedure

Charging with Operating Pressures

Diagrams and Operation Sequence

Early Model Unit Diagram

Operation Sequence Details

Late Model Unit Diagrams

2-Pole Unit Diagram

3 & 4-Pole Unit Diagrams

Operation Sequence (2-Pole)

Operation Sequence (3 & 4-Pole)

Late Model Three-Phase Unit Diagrams

Three-Phase Unit Diagrams

Three-Phase Operation Sequence