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Lennox ZCC092 - User Manual

Lennox ZCC092
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Page 1
UNIT INFORMATIONUNIT INFORMATION
Service Literature
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at disconnect
switch(es). Unit may have multiple power
supplies.
Table of Contents
Options / Accessories . . . . . . . . . . . . . . . . . . . . . . . Page 2

Blower Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Electrical Data /Electric Heat Data . . . . . . . . . . . . Page 10

I- Unit Components . . . . . . . . . . . . . . . . . . . . . . . Page 16
II- Placement and Installation . . . . . . . . . . . . . . . Page 27
III- Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 27
IV- Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 28
V- System Service Checks . . . . . . . . . . . . . . . . . Page 33
VI- Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 33
VII- Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 34
VIII-Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . Page 41

packaged electric units are available in standard cooling
󰀩
󰀨-
ent energy management thermostat control systems with
-
tions connect to the unit with jack plugs. When ”plugged
in” the controls become an integral part of the unit wiring.
       -
erates in single or multiple stages depending on the kW

ZCC units.
Information contained in this manual is intended for use

subject to change. Procedures outlined in this manual are
presented as a recommendation only and do not super-
sede or replace local or state codes.



for the proper rigging technique.
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and service
must be performed by a licensed professional HVAC
installer or equivalent service agency.
WARNING
To prevent serious injury or death:
1- Lock-out/tag-out before performing maintenance.
2- If system power is required (e.g., smoke detector
maintenance), disable power to blower, remove
fan belt where applicable, and ensure all
controllers and thermostats are set to the “OFF”
position before performing maintenance.
3- Always keep hands, hair, clothing, jewelry, tools,
etc., away from moving parts.
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and
wear gloves and protective clothing.
ZCC SERIES
7.5 to 12.5 ton
26.3 to 42 kW
100078
ZCC092 through 150
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Lennox ZCC092 Specifications

General IconGeneral
BrandLennox
ModelZCC092
CategoryAir Conditioner
LanguageEnglish

Summary

Unit Information and Safety

Critical Safety Warnings

Consolidates installation, electrical, and handling safety warnings.

Specifications

General Unit Data

Covers nominal tonnage, model, efficiency, and blower type.

Cooling Performance and Refrigerant

Details cooling capacity, airflow, power, EER, IEER, and refrigerant.

Coil, Fan, Blower, and Electrical Specs

Covers coil, fan, blower, filters, and electrical characteristics.

Electrical and Electric Heat Data

KCC092 S4 Model Data

Electrical and electric heat specs for KCC092S4.

Electrical and Electric Heat Data

KCC102 S4 Model Data

Electrical and electric heat specs for KCC102S4.

KCC120 S4 Model Data

Electrical and electric heat specs for KCC120S4.

KCC150 S4 Model Data

Electrical and electric heat specs for KCC150S4.

Electric Heat Capacities

Capacities by Voltage and kW

Details electric heat capacities across voltages and kW sizes.

Unit Components

Electrostatic Discharge (ESD) Precautions

Safety measures for handling electronic components.

Control Box Components Overview

Lists and describes key components within the control box.

Cooling System Components

Compressors, Protection, and Heaters

Details compressors, switches, and crankcase heaters.

Operation and Adjustment

Compressor Voltage Phasing

Procedure for phasing three-phase compressors.

Determining Unit CFM

CFM Calculation and Blower Adjustment

Procedures for determining CFM and adjusting blower belts.

Belt and Pulley Adjustment

Pulley Alignment and Belt Tension Check

Guides for aligning pulleys and checking belt tension.

Optional Electric Heat Components

Contactors, Limits, and Terminal Blocks

Details contactors, limits, and terminal blocks.

Electric Heat Fuse Ratings

Placement and Operation

Installation, Startup, and Safety

Covers installation, startup checks, and safety shutdown.

Charging

Refrigerant Charge and Check Procedure

Steps for checking and adjusting refrigerant charge.

Operating Pressures and Charging Curves

System Service Checks and Maintenance

Maintenance Safety and Filter Procedures

Covers safety warnings and filter replacement.

Economizer Information

Enthalpy Control and Free Cooling

Controller, Setpoints, and Free Cooling

Details controller, LEDs, setpoints, and free cooling.

Demand Control Ventilation and Economizer Operation

Fresh Air Calculation and DCV Settings

Chart for fresh air calculation and DCV settings.

Economizer and Power Exhaust Fans

Economizer Wiring and Diagrams

Exhaust Fan and Drain Pan Controls

Wiring Diagrams and Component Descriptions

Unit Wiring Diagram

Comprehensive wiring diagram for the ZCC unit.

Sequence of Operation

Power, Blower, and Cooling Stages

Describes power, blower, and multi-stage cooling sequences.

Thermostat Wiring and Operation

Standard Efficiency Economizer

High Performance Economizer

Electric Heat Wiring Diagrams (Y Voltage)

Electric Heat Wiring Diagrams (G, J, M Voltages)

Electric Heat Sequence of Operation

Power Supply Configurations

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