Allied 4SCU16LE160P-50 - User Manual

508219-01 Issue 2132 Page 1 of 43
SERVICE MANUAL
4SCU16LE/14LB
(P) 508219-01
*P508219-01*
Table of Contents
Technical Specications - 4SCU16LE .........................2
Technical Specications - 4SCU14LB .........................5
Technical Specications - 4SCU14LE-7 ......................8
Technical Specications - 4SCU14LB-7 ....................10
Technical Specications - 4SCU14LE-4 ....................12
Refrigerant Metering Device - Indoor Coil .................16
Installation .................................................................16
Refrigeration Piping ...................................................19
Electrical Wiring .........................................................28
Sequence of Operation..............................................32
Start-Up .....................................................................32
Maintenance ..............................................................33
Wiring Diagram ..........................................................34
Servicing Units Void of Charge ..................................38
System Refrigerant ....................................................38
Charge Labels ...........................................................41
Start-Up and Performance Checklist .........................43
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
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.
WARNING
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.
CAUTION
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 or the gas supplier.
WARNING

Summary

Technical Specifications - 4 SCU16 LE

Refrigeration Data

COOLING PERFORMANCE WITH DTC

Technical Specifications - 4 SCU14 LB

Technical Specifications - 4 SCU14 LE-7

Technical Specifications - 4 SCU14 LB-7

Technical Specifications - 4 SCU14 LE-4

MODEL NUMBER GUIDE

Explains how to interpret the unit's model number for its features and capabilities.

PHYSICAL AND ELECTRICAL DATA

Provides key physical dimensions, electrical ratings, and performance data for each model.

Refrigerant Metering Device

Installation Clearances

Refrigeration Piping

Line Set Installation

Filter Drier and System Conversion

Indoor Expansion Valve Installation

Brazing Procedures

Line Set Preparation

Covers cutting, deburring, and capping refrigerant lines before brazing.

Manifold Gauge Connection

Details connecting manifold gauges and nitrogen for brazing operations.

Service Valve Protection

Describes wrapping service valves with wet cloths to prevent heat damage during brazing.

Leak Test and Evacuation

Leak Testing Procedures

Step-by-step guide for checking the system for refrigerant leaks using nitrogen.

Evacuation Procedures

Outlines the process for evacuating the system to remove moisture and non-condensables.

Electrical Wiring

Refrigerant Charging

Maintenance

Regular Maintenance Schedule

Component Care

Servicing Units Void of Charge

System Refrigerant Procedures

Gauge Set Connections

Illustrates how to connect manifold gauges for testing and charging refrigerant.

Airflow Adjustment

Refrigerant Adjustment

Details methods for adding or removing refrigerant based on system conditions and measurements.

Air Conditioning Charging Procedure

Charging by Weight

Superheat;Subcooling Adjustments

Allied 4SCU16LE160P-50 Specifications

General

Brand	Allied
Model	4SCU16LE160P-50
Category	Air Handlers
Motor Type	ECM
Cabinet Construction	Galvanized Steel
Insulation	Foil-faced
Airflow	1600 CFM
Voltage	208/230V
Filter Type	MERV 8
Coil Type	Aluminum Fin/Copper Tube
Drain Pan	Plastic