Lennox HS26-311 User Manual

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 HS26-311 Specifications

General

Model Number	HS26-311
Category	Air Conditioner
SEER Rating	16
Refrigerant Type	R-410A
Operating Voltage	208/230V
Phase	1
Sound Level (Outdoor Unit)	76 dB

Summary

SCROLL COMPRESSOR MECHANICS

Scroll Compressor Functionality

Explains the counterclockwise orbiting action of scrolls for gas compression and discharge.

UNIT COMPONENTS AND ELECTRICAL SAFETY

Transformer, Contactor, and ESD Precautions

Details transformer, contactor functions and essential Electrostatic Discharge (ESD) safety measures.

UNIT CONTROL SYSTEMS AND OPERATIONAL SAFETY

Critical Control System Safety Warnings

Highlights DANGER warnings regarding repair or bypass of TD1-1 and TOC controls.

PRESSURE SWITCHES AND DUAL CAPACITOR FUNCTION

High and Low Pressure Switch Operation

Explains the function and trip points of the high and low pressure switches.

Compressor Grounding and Safety Warning

Emphasizes compressor grounding and general safety precautions before servicing.

EARLY MODEL SERVICE VALVE OPERATION PROCEDURES

Liquid Line Valve Operation Procedures

Step-by-step instructions for accessing, opening, and closing the liquid line service valve.

Suction Line Valve Operation Procedures

Step-by-step instructions for accessing, opening, and closing the suction line service valve.

LATE MODEL AND BALL TYPE SERVICE VALVES

Late Model Service Valves Description

Service Valve Operation Procedures (Late/Ball)

General procedures for operating service valves on late models and ball type suction valves.

SYSTEM CHARGING AND LEAK TESTING

Refrigerant Charging Guidelines

Leak Testing Procedure and Safety

Details the process for leak testing and includes critical safety warnings about explosion risk.

SYSTEM EVACUATION AND OPERATING PRESSURES

System Evacuation Procedure

Step-by-step instructions for evacuating the system to remove non-condensables.