WHO SHOULD USE THIS MANUAL

This service manual is made to assist the service technician apply his knowledge and training to this model air conditioner. This manual is written both for experienced service persons and those who are new to air conditioning service. To help those with less experience or who are new to this kind of unit we have included more explanations of basic procedures in simple language than is usual in some service manuals. The experienced technician will of course find he knows many of these things already and can go directly to the procedures and information he needs; the less experienced technician will better understand what to do even before he arrives on the job, and therefore be better able to work by himself as well as assist the more experienced technician.

TABLE OF CONTENTS

1. SPECIFICATIONS

I -

1

1-1

Unit Specifications

I -

2

1-2

Major Component Specifications

I - 12

(A) Indoor Units

I - 12

(B) Outdoor Units

I - 22

1-3

Other Component Specifications

I - 25

1-4

Dimensional Data

I - 38

(A) Indoor Units

I - 38

(B) Outdoor Units

I - 47

1-5

Refrigerant Flow Diagram

I - 49

1-6

Operating Range

I - 50

1-7

Cooling Capacity

I - 51

1-8

Heating Capacity

I - 71

1-9

Performance Charts

I - 72

1-10

Noise Criterion Curves

I - 90

1-11

Increasing the Fan Speed

I - 95

1-12

Air throw Distance Chart

I - 96

1-13

Installation Instructions

I - 99

2. PROCESSES AND FUNCTIONS

II -

1

2-1

Room Temperature Control

II -

2

2-2 Cold Draft Prevention (Heating Cycle)

II -

4

2-3 Automatic Fan Speed (Indoor Unit)

II -

5

2-4 Outdoor Fan Speed Control

II -

6

2-5

Freeze Prevention (Cooling)

II -

7

2-6 Condensing Temperature Control (Cooling)

II -

8

SM830082

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Sanyo UH3642 / CH3642, XH3642 / CH3642, XH4242 / CH4242, XH2442 / CH2442 WHO should USE this Manual Table of Contents