Sanyo CMH3172A User Manual

4
2. Installation Site Selection
2-1. Indoor Unit
AVOID:
G direct sunlight.
G nearby heat sources that may affect performance of the
unit.
G areas where leakage of flammable gas may be expected.
G placing or allowing any obstructions near the air conditioner
inlet or outlet.
G installing in rooms that contain instant-on (rapid-start)
fluorescent lamps. (These may prevent the air conditioner
from receiving signals.)
G places where large amounts of oil mist exist.
G installing in locations where there are devices that
generate high-frequency emissions.
DO:
G select an appropriate position from which every corner of
the room can be uniformly air-conditioned. (High on a wall
is best for wall-mounted types.)
G select a location that will hold the weight of the unit.
G select a location where tubing and drain hose have the
shortest run to the outside. (Fig. 1)
G allow room for operation and maintenance as well as
unrestricted air flow around the unit. (Fig. 2a or 2b)
G install the unit within the maximum elevation difference
(H1, H2, H3, H4) above or below the outdoor unit and
within a total tubing length (L1+L2+L3, L1+L2+L3+L4)
from the outdoor unit as detailed in Table 3 and Fig. 3a.
Drain hose
Indoor unit
Outside drainage
Fig. 1
2" (5 cm)
min.
6" (15 cm)
min.
Front View
2" (5 cm)
min.
Fig. 2a
For wall-mounted units
For ceiling-mounted cassette units
INDOOR
UNIT (1)
INDOOR
UNIT (4)
INDOOR
UNIT (3)
INDOOR
UNIT (2)
Tubing length (L1)
L2
L3
L4
H2
H3
H4
OUTDOOR
UNIT
Elevation
difference (H1)
Fig. 3a
WARNING
To prevent abnormal heat generation
and the possibility of fire, do not
place obstacles, enclosures and
grilles in front of or surrounding the
air conditioner in a way that may
block air flow.
Indoor unit
Floor level
Wall
Minimum height
from floor level
5' (1.5 m)
Fig. 3b
• Air delivery from a ceiling-
mounted cassette unit will
be degraded if the distance
from the floor to the ceiling
is greater than 10 ft. (3 m).
• For stable operation of the
air conditioner, do not install
wall-mounted units less
than 5' (1.5 m) from floor
level. (Fig. 3b)
CAUTION
Fig. 2b
3.3 ft.
(1m)
(1m)
(1m)
3.3 ft.
(1m)
3.3 ft.
3.3 ft.
3.3 ft.
(1m)
09-207 CMH3172A_OU 12/10/09 3:13 PM Page 4

Sanyo CMH3172A Specifications

General

Brand	Sanyo
Model	CMH3172A
Category	Air Conditioner
Language	English

Summary

Notice and Product Identification

Correction and Production Change Information

Indicates sections for corrections, service flashes, production changes, or added information.

Product Model and Capacity Summary

Provides a summary of outdoor unit models, capacities, and product codes.

Technical & Service Manual Overview

Outdoor Unit Identification and Applicable Indoor Units

Identifies outdoor units and lists compatible indoor unit types.

Safety Precautions

General and Electrical Safety Guidelines

Covers general safety, electrical shock warnings, and proper wiring practices.

Refrigerant, High Place, and Maintenance Safety

Details safety for refrigerant handling, working at heights, and maintenance procedures.

Applicable Indoor Units

Wall Mounted and Semi-Concealed Unit Compatibility

Details compatibility tables for wall-mounted and semi-concealed indoor units.

Operating Range Specifications

Cooling and Heating Temperature Limits

Specifies the operational temperature ranges for cooling and heating modes.

Unit Specifications Overview

CMH1972A 230V Specifications

Detailed specifications for the CMH1972A outdoor unit at 230V.

CMH1972A 208V Specifications

Detailed specifications for the CMH1972A outdoor unit at 208V.

CMH2472A 230V Specifications

Detailed specifications for the CMH2472A outdoor unit at 230V.

CMH2472A 208V Specifications

Detailed specifications for the CMH2472A outdoor unit at 208V.

CMH3172A 230V Specifications

Detailed specifications for the CMH3172A outdoor unit at 230V.

CMH3172A 208V Specifications

Detailed specifications for the CMH3172A outdoor unit at 208V.

Major Component Specifications

CMH1972A Outdoor Unit Components

Details on control PCB, compressor, fan motor, and heat exchanger for CMH1972A.

CMH2472A Outdoor Unit Components

Details on control PCB, compressor, fan motor, and heat exchanger for CMH2472A.

CMH3172A Outdoor Unit Components

Details on control PCB, compressor, fan motor, and heat exchanger for CMH3172A.

Other Component Specifications

Sensor Specifications and Charts

Information on sensors and corresponding resistance charts.

Dimensional Data

CMH1972A Outdoor Unit Dimensions

Provides detailed diagrams and measurements for the CMH1972A outdoor unit.

CMH2472A Outdoor Unit Dimensions

Provides detailed diagrams and measurements for the CMH2472A outdoor unit.

CMH3172A Outdoor Unit Dimensions

Provides detailed diagrams and measurements for the CMH3172A outdoor unit.

Refrigerant Flow and Tubing

CMH1972A Refrigerant Flow and Tubing Insulation

Illustrates refrigerant flow and specifies tubing insulation requirements.

CMH2472A Refrigerant Flow Diagram

Illustrates the refrigerant path for the CMH2472A model.

CMH3172A Refrigerant Flow Diagram

Illustrates the refrigerant path for the CMH3172A model.

Performance Data

CMH1972A Performance Charts and Notes

Cooling and heating performance charts with usage notes for CMH1972A.

CMH2472A Performance Charts

Cooling and heating performance charts for CMH2472A.

CMH3172A Performance Charts

Cooling and heating performance charts for CMH3172A.

Capacity Data

CMH1972A Cooling Capacity Tables

Tables detailing cooling capacity based on temperature conditions for CMH1972A.

CMH2472A Cooling Capacity Tables

Tables detailing cooling capacity based on temperature conditions for CMH2472A.

CMH3172A Cooling Capacity Tables

Tables detailing cooling capacity based on temperature conditions for CMH3172A.

Heating Capacity Data

CMH1972A Heating Capacity Tables

Tables detailing heating capacity based on temperature conditions for CMH1972A.

CMH2472A Heating Capacity Tables

Tables detailing heating capacity based on temperature conditions for CMH2472A.

CMH3172A Heating Capacity Tables

Tables detailing heating capacity based on temperature conditions for CMH3172A.

Electrical Data

CMH1972A Electric Wiring Diagram

Shows the electrical connections and wiring diagram for CMH1972A.

CMH2472A Electric Wiring Diagram

Shows the electrical connections and wiring diagram for CMH2472A.

CMH3172A Electric Wiring Diagram

Shows the electrical connections and wiring diagram for CMH3172A.

Unit Functions

Initial Operation and HEAT Mode

Explains initial start-up sequence and HEAT mode operations.

HEAT Mode: Defrost and Operation States

Details defrost sequences and operational states within HEAT mode.

COOL Mode and Freeze Prevention

Describes COOL mode operation, freeze prevention, and stop conditions.

SENSOR DRY Mode and Frequency Control

Explains SENSOR DRY mode and frequency control mechanisms.

Low Ambient Cooling Operation

Low Ambient Cooling Mode and Protection

Covers mode transitions and protective actions for low ambient cooling.

Protective Functions

Defrost Detection and Release

Explains the mechanisms for detecting and releasing defrost cycles.

Current Control and Frequency Adjustment

Describes how current is managed by adjusting operating frequency.

Start-up Current, Compressor Control, and HEAT Start-up

Covers low start current, compressor temp control, and HEAT start-up.

Troubleshooting Precautions

Handling High-Voltage Electronic Components

Warns about charged capacitors and safe handling of electronic boards.

Trouble Diagnosis using Error Lamps

Error Lamp Locations and Meanings

Identifies error lamp locations and their diagnostic codes.

Outdoor System Checks

Outdoor Unit Power and Defrost Test

Checks outdoor unit power, operation, and performs a defrost test.

Troubleshooting Part Diagnostics

Part-Specific Problem and Inspection Guide

Maps common problems to inspection points for various parts.

Detailed Component Inspection Points

Provides specific checks for components like fuses, compressors, and sensors.

Electric Expansion Valve Inspection

Details the procedure for testing the electric expansion valve's functionality.

Sensors, Breaker, and Refrigerant Pressure Checks

Covers checks for temperature sensors, breakers, and refrigerant pressure.

Fan Motor Troubleshooting

DC Fan Motor Symptoms and Diagnostics

Lists fan motor issues and diagnostic procedures via voltage checks.

Refrigerant R410A Servicing Precautions

R410A Refrigerant Characteristics

Explains the properties, composition, and handling of R410A refrigerant.

Servicing Checklist and Tubing Precautions

Covers pre-servicing checks, flare tool usage, and tubing precautions.

Tools for R410A Servicing

Lists specialized tools required for servicing R410A systems.

Compressor Malfunction and Replacement

Compressor Replacement Procedure

Details steps for recovering refrigerant, replacing compressor, checking seals, and evacuation.

Refrigerant Recharging Procedures

Explains refrigerant charging methods, safety, and quantity guidelines.

Refrigerant Leak Detection and Repair

Leak Detection, Repair, and Recharge Process

Outlines steps to find, fix refrigerant leaks, and recharge the system.

Additional Refrigerant and Retrofitting

Covers procedures for adding refrigerant and retrofitting existing systems.

Installation Instructions Appendix

Overview and Model Combinations

Lists installation sections and provides an overview of unit combinations.

Important Installation and Safety Guidelines

General Installation Safety and Site Selection

Covers general safety, electrical precautions, and site selection criteria.

General Installation Information

Required Tools, Accessories, and Materials

Lists necessary tools, supplied accessories, and required materials.

Installation Site Selection

Indoor and Outdoor Unit Placement Guidelines

Specifies ideal locations, areas to avoid, and clearances for unit placement.

Tubing Length and Elevation Limits

Provides specifications for maximum tubing length and elevation differences.

Connecting Indoor and Outdoor Units

CMH1972A Indoor Unit Connection Diagrams

Illustrates connection methods for indoor units with CMH1972A.

CMH2472A Indoor Unit Connection Diagrams

Illustrates connection methods for indoor units with CMH2472A.

CMH3172A Indoor Unit Connection Diagrams

Illustrates connection methods for indoor units with CMH3172A.

Outdoor Unit Installation

Outdoor Unit Placement and Baffle Installation

Details outdoor unit placement and the installation of wind baffle plates.

Baffle Plate Dimensions and Parts

Provides dimensions and required parts for baffle plate installation.

Installation Process Steps

Tubing, Wiring, and Flaring Procedures

Covers embedding tubing, wiring, and the flaring process.

Tube Connection Precautions and Torque

Covers cautions for tube connection and specified tightening torques.

Outdoor Unit Outer Dimensions

Dimensional Diagrams for CMH1972A/CMH2472A/CMH3172A

Provides detailed measurement diagrams for all outdoor unit models.

Outdoor Unit Installation Diagram and Clearance

Flaring Procedure and Tube Preparation

Refrigerant Tubing Installation Details

Refrigerant Tubing Insulation and Securing

Explains how to properly insulate and secure refrigerant tubing.

Air Purging Procedures

Effects of Air/Moisture and Vacuum Pump Purging

Details air purging effects and vacuum pump procedures.

Vacuum Pump Purging Steps and Precautions

Covers detailed steps for vacuum pump operation and safety.

Refrigerant Pump Down Procedure

Explains how to recover refrigerant using the pump down method.

Wiring Instructions and Precautions

General Wiring Precautions

Covers safety, grounding, and connection guidelines for wiring.

Recommended Wire Size and Length

Provides guidance on wire selection based on length and electrical codes.

Wiring System Diagrams for Unit Configurations

Shows wiring diagrams for different indoor and outdoor unit configurations.

Connecting Wires to Terminals

Explains the correct procedure for connecting wires to unit terminals.

Outdoor Unit Wiring Connections and Routing

Details connections to the outdoor unit's terminal board and cable management.

Test Run Procedures

Performing Test Run and Checking Connections

Outlines how to conduct a test run and check for tubing/wiring errors.

Installation Completion Checks

Home Automation and Final Installation Verification

Covers HA device connection and a checklist for final installation verification.

Unit Combination Tables Appendix

List of Combination Tables and Notes

Lists available combination tables and provides important operational notes.

3-Room Outdoor Unit Combinations (CMH1972A)

CMH1972A 3-Room Combinations (230V/208V)

Details possible indoor unit combinations for 3-room setups with CMH1972A.

CMH1972A 3-Room Combination Table (230V)

Table listing 3-room indoor unit combinations for CMH1972A at 230V.

CMH1972A 3-Room Combination Table (208V)

Table listing 3-room indoor unit combinations for CMH1972A at 208V.

4-Room Outdoor Unit Combinations (CMH2472A)

CMH2472A 4-Room Combinations (230V)

Details possible indoor unit combinations for 4-room setups with CMH2472A.

CMH2472A 4-Room Combination Table (230V)

Table listing 4-room indoor unit combinations for CMH2472A at 230V.

CMH2472A 4-Room Combination Table (208V)

Table listing 4-room indoor unit combinations for CMH2472A at 208V.

4-Room Outdoor Unit Combinations (CMH3172A)

CMH3172A 4-Room Combinations (230V)

Details possible indoor unit combinations for 4-room setups with CMH3172A.

CMH3172A 4-Room Combination Table (230V)

Table listing 4-room indoor unit combinations for CMH3172A at 230V.

CMH3172A 4-Room Combination Table (208V)

Table listing 4-room indoor unit combinations for CMH3172A at 208V.