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Lennox KCC102S4M - User Manual

Lennox KCC102S4M
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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 KCC102S4M Specifications

General IconGeneral
BrandLennox
ModelKCC102S4M
CategoryAir Conditioner
LanguageEnglish

Summary

UNIT INFORMATION

Service Literature

Provides service information for ZCC units, covering operation and maintenance procedures.

SPECIFICATIONS

General Data

Technical specifications including tonnage, model, efficiency, and blower type for ZCC units.

BLOWER DATA

ELECTRICAL AND ELECTRIC HEAT DATA

I-UNIT COMPONENTS

ZCC PLUMBING AND COMPRESSOR CIRCUITS DETAIL

B-Cooling Components

Compressors B1 and B2

Description of the two scroll compressors used in ZCC units.

High Pressure Switches S4 and S7

Function and location of high pressure safety switches.

Low Ambient Switches S11 & S84 (optional)

Optional switches for mechanical cooling at low outdoor temperatures.

OPERATION AND ADJUSTMENT

Three Scroll Compressor Voltage Phasing

Importance of correct voltage phasing for three-phase compressors.

D-Determining Unit CFM

D-Optional Electric Heat Components

Contactors K15, K16

Function of contactors K15 and K16 in controlling electric heat.

High Temperature Limits S15 (Primary)

Primary high-temperature limit switch for electric heat.

High Temperature Limit S20, S157, S158, S15, S160 & S161 (Secondary)

Secondary high-temperature limit switches for electric heat.

Heating Elements HE1 through HE6

Description of electric heating elements.

II-PLACEMENT AND INSTALLATION

Safety or Emergency Shutdown

Safety procedures and shutdown conditions.

IV-CHARGING

REFRIGERANT CHARGE AND CHECK

Guidelines for checking and adjusting refrigerant charge.

VI-MAINTENANCE

VII-ACCESSORIES

VIII-Wiring Diagrams and Sequence of Operation

ZCC092;150 UNIT DIAGRAM

Detailed wiring diagram identifying ZCC092/150 unit components.

ZCC092;150 Sequence of Operation

Step-by-step operation sequence for ZCC092/150 cooling/heating.

EHA-7.5, 15, 22.5, 30, 45 & 60 kW G, J VOLTAGE ZCC SERIES UNITS

Sequence of Operation - EHA 7.5, 15, 22.5, 30, 45, 60 kW - Y and G, J, M

Operation sequence for electric heat sections across various voltages/kW.

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