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Lennox Value Series

Lennox Value Series
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3DJH
£
PRODUCT LITERATURE
¤
1998 Lennox Industries Inc.
Dallas, Texas
VALUE 10
TM
CONDENSING UNIT
Value 10 condensing units are designed for expansion
valve (TXV) and RFC systems. Refer to Lennox engi-
neering handbook for expansion valve kits which must
be ordered separately.
SHIPPING AND PACKING LIST
1-- Assembled 10ACB condensing unit
1-- 45
E
copper street elbow
1-- RFCIV refrigerant metering device (bullet)
1-- Coupling -- 5/16 x 3/8 (18, 24, 30)
Check unit for shipping damage. Consult last carrier
immediately if damage is found.
GENERAL INFORMATION
These instructions are intended as a general guide and
do not supersede national or local codes in any way.
Authorities having jurisdiction should be consultedbe-
fore installation.
IMPORTANT
The Clean Air Act of 1990 bans the intentional
venting of refrigerant (CFCs and HCFCs) as of July
1, 1992. Approved methods of recovery, recycling
or reclaiming must be followed. Fines and/or in-
carceration may be levied for non--compliance.
INSTALLATION
INSTRUCTIONS
9DOXH
70
6HULHV
$&% &RQGHQVL QJ 8QLWV
&21'(16,1* 81,76
1--1/2 through 5 ton
503,800M
2/98
Supersedes 503,755M
TABLE OF CONTENTS
VALUE 10 CONDENSING UNIT 1.....................
SHIPPING AND PACKING LIST 1......................
GENERAL INFORMATION 1..........................
10ACB UNIT DIMENSIONS 2.........................
SETTING THE UNIT 3................................
ELECTRICAL 3......................................
PLUMBING 4.......................................
REFRIGERANT METERING DEVICE 4..................
MANIFOLD GAUGE SET 5...........................
LIQUID & SUCTION LINE SERVICE VALVES 5..........
LEAK TESTING 6....................................
EVACUATION 7.....................................
START-UP 8........................................
CHARGING CONSIDERATIONS 8.....................
CHARGING FOR RFC SYSTEMS 9....................
CHARGING FOR TXV SYSTEMS 10...................
SYSTEM OPERATION 10.............................
MAINTENANCE 11..................................
10ACB CHECK POINTS 12............................
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Product contains fiberglass wool.
Disturbing the insulation in this product during
installation, maintenance, or repair will expose
you to fiberglass wool. Breathing this may cause
lung cancer. (Fiberglass wool is known to the
State of California to cause cancer.)
Fiberglass wool may also cause respiratory, skin,
and eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact
your supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379--9900
/LWKR 86$
All manuals and user guides at all-guides.com
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Lennox Value Series Specifications

General IconGeneral
BrandLennox
ModelValue Series
CategoryHeat Pump
LanguageEnglish

Summary

Installation Instructions

Value Series 10 ACB Condensing Units

Details for the Value Series 10ACB Condensing Units, including model numbers and superseding information.

Value 10 Condensing Unit Description

Describes the design of Value 10 condensing units for expansion valve (TXV) and RFC systems.

Shipping and Packing List

Lists the items included with the assembled 10ACB condensing unit and instructions for checking shipping damage.

General Information and Safety

General installation guidelines, code compliance, and safety notes on refrigerant venting under the Clean Air Act.

Warning: Fiberglass Wool Exposure

Warns about exposure to fiberglass wool during installation, maintenance, or repair, and potential health risks.

10 ACB Unit Dimensions

Unit Dimensions Diagrams and Table

Provides diagrams and a table listing the dimensions for various 10ACB unit models in inches and millimeters.

Setting the Unit

Installation Clearances and Mounting

Details required clearances for unit installation, slab mounting, and roof mounting, with diagrams.

Electrical Requirements and Grounding

Covers electrical wiring codes, grounding, line voltage, 24V circuits, and provides a field wiring diagram.

Plumbing

Refrigerant Piping and Connections

Instructions for refrigerant piping, line set selection, sweat connection procedures, and line kit details.

Refrigerant Metering Devices (RFCIV)

Information on RFCIV devices, drill sizes, and installation diagram for 10ACB units.

Expansion Valve Systems

RFCIV Removal and Manifold Gauge Set

Highlights the importance of RFCIV removal for expansion valves and specifies 'low loss' manifold gauge set use.

Service Valves Operation

Details on accessing service ports, opening/closing liquid/suction line valves, and their functions.

Danger: Backseating Valve Stem

Critical danger warning against backseating valve stems, which can cause component failure and injury.

Leak Testing

Warning: Pressurization Gases

Strong warning against using oxygen for pressurization; emphasizes safe use of nitrogen or CO2.

Leak Detection Methods

Outlines procedures for leak testing using HCFC-22 and nitrogen, including pressure management.

Service Valve Types

Describes suction line service valves, including ball-type for 5-ton units, and provides operational diagrams.

Evacuating

Importance of Evacuation

Explains the critical need to remove non-condensables and water vapor to prevent system corrosion and details initial evacuation steps.

Evacuation Procedure and Vacuum Levels

Covers the full evacuation process, achieving target vacuum levels, and breaking vacuum with nitrogen.

Caution: Deep Vacuum Operation

Warns against deep vacuum operation with compressors, which can cause internal arcing and damage.

Start-Up

Important: Crankcase Heater

Emphasizes energizing the crankcase heater 24 hours before start-up to prevent compressor slugging damage.

Start-Up Checklist and Charging Considerations

Provides a checklist for unit start-up and discusses initial charging considerations based on ambient temperature.

Table 3: Refrigerant Charge Adjustment

Table detailing adjustments to refrigerant charge based on line set diameter and length deviations from standard.

Table 4: Normal Operating Pressures

Table 4 Explanation and Charging Preparation

Explains Table 4 as a maintenance guide and details preparation steps for unit charging procedures.

Charging for RFC Systems

Describes weighing-in and subcooling methods for charging RFC systems based on outdoor ambient temperature.

Charging for TXV Systems

TXV Charging Methods

Details the weighing-in method (low ambient) and the approach method (high ambient) for charging TXV systems.

System Operation and Components

Covers system operation, crankcase heaters, compressor start kits, timed-off controls, and pressure switches.

Subcooling and Approach Tables

Presents tables for subcooling values for RFC systems and approach temperature targets for TXV systems.

Maintenance

Warning: Electrical Safety

Critical warning to turn off electrical power before performing any service or maintenance to avoid shock hazards.

Seasonal and Coil Maintenance

Covers essential maintenance tasks at the start of the cooling season, including condenser coil cleaning and inspection.

Indoor Unit and Component Checks

Details indoor unit maintenance like filter cleaning, blower adjustments, and checks for refrigerant sight glass installation.

Start-Up and Performance Check List

Job and Unit Information

Fields for recording essential job details, unit model, serial number, and nameplate specifications.

Cooling Section Performance Verification

Checklist items to verify proper cooling section operation, including leak checks, valve status, and refrigerant charge.

Thermostat Checks

Items to verify regarding thermostat settings, proper operation, and levelness for correct system control.

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