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Lennox KCC150S4M - User Manual

Lennox KCC150S4M
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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 KCC150S4M Specifications

General IconGeneral
Tons12.5
Cooling Capacity150, 000 BTU/h
SEER Rating11.2
Phase3
RefrigerantR-410A

Summary

OPTIONS; ACCESSORIES

Indoor Air Quality

Options for improving indoor air quality, including filters and sensors.

Electric Heat

Various electric heat kW options and voltage configurations.

Economizer

Economizer options for energy saving and compliance.

SPECIFICATIONS

General Data

Basic unit data including tonnage, model, efficiency, and blower type.

BLOWER DATA

Belt Drive - 7.5 | 8.5 Ton

Blower performance data for 7.5 and 8.5 ton units.

Belt Drive - 10 | 12.5 Ton

Blower performance data for 10 and 12.5 ton units.

ELECTRICAL;ELECTRIC HEAT DATA

7.5 Ton

Electrical and electric heat data for the 7.5 ton model.

10 Ton

Electrical and electric heat data for the 10 ton model.

ELECTRIC HEAT CAPACITIES

ZCC PARTS ARRANGEMENT

I-UNIT COMPONENTS

ZCC PLUMBING AND COMPRESSOR CIRCUITS DETAIL

B-Cooling Components

Description of cooling system components like compressors and fans.

OPERATION; ADJUSTMENT

Three Scroll Compressor Voltage Phasing

Procedure for ensuring correct compressor and blower rotation.

D-Determining Unit CFM

Method for calculating unit airflow based on static pressure.

E-Blower Belt Adjustment

Guidelines for adjusting blower belt tension for optimal performance.

ELECTRIC HEAT CONTROL ASSEMBLY

II-PLACEMENT AND INSTALLATION

B-Cooling Startup

Procedures for initiating cooling operation and checking system stages.

IV-CHARGING

Refrigerant Charge and Check

Procedures for checking and adjusting refrigerant charge using approach method.

V-SYSTEMS SERVICE CHECKS

VI-MAINTENANCE

Standard Economizer Down Flow and Horizontal

VIII-Wiring Diagrams and Sequence of Operation

ZCC092;150 Sequence of Operation

ELECTRONIC OR ELECTROMECHANICAL THERMOSTAT

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

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