Friedrich HAZARDGARG R-410A User Manual

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Service Manual

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Hazardous Duty

Room Air Conditioner

R-410AModels

Cool Only

SH15M30A

SH20M30A

HG-ServMan(4-10)

Table Of Contents

 

Important Safety Information .....................................................................................................................

2-4

Introduction ...................................................................................................................................................

4

Unit Identification ..........................................................................................................................................

5

Hazardgard Application ................................................................................................................................

6

Performance Specifications and Installation Data ........................................................................................

7

Electrical Data ..............................................................................................................................................

8

HazardGard Special Features ......................................................................................................................

9

Component Definitions ...............................................................................................................................

10

Component Testing ................................................................................................................................

11-12

R-410ASealed System Repair Considerations ..........................................................................................

13

Sealed Refrigeration System Repairs ...................................................................................................

14-17

Refrigerant Charging .............................................................................................................................

14-17

Compressor Checks ..............................................................................................................................

18-19

Compressor Replacement .....................................................................................................................

19-20

Routine Maintenance .............................................................................................................................

21-22

Performance Test Data Sheet .....................................................................................................................

23

Troubleshooting .....................................................................................................................................

24-26

Wiring Diagram and Schematic ..................................................................................................................

27

Warranty .....................................................................................................................................................

28

Technical Assistance ...................................................................................................................................

29

1

IMPORTANT SAFETY INFORMATION

The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair, and who is equipped with the proper tools and test instruments required to service this product.

Installation or repairs made by unqualified persons can result in subjecting the unqualified person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal.

Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered. If you install or perform service on equipment, it is your responsibility to read and obey these warnings to guard against any bodily injury or property damage which may result to you or others.

Your safety and the safety of others are very important.

We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety messages.

This is a safety Alert symbol.

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol with the word “WARNING” or “CAUTION”. These words mean:

WARNING

CAUTION

You can be killed or seriously injured if you do not follow instructions.

You can receive minor or moderate injury if you do not follow instructions.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what will happen if the instructions are not followed.

A message to alert you of potential property damage will have the NOTICE word “NOTICE”. Potential property damage can occur if instructions

are not followed.

PERSONAL INJURY OR DEATH HAZARDS

ELECTRICAL HAZARDS:

Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenance, or service.

Make sure to follow proper lockout/tag out procedures.

Always work in the company of a qualified assistant if possible.

Capacitors, even when disconnected from the electrical power source, retain an electrical charge potential capable of causing electric shock or electrocution.

Handle, discharge, and test capacitors according to safe, established, standards, and approved procedures.

Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary to test or troubleshoot equipment with the power on to the unit.

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Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, and sleeve on the room side of the air conditioning unit while cleaning.

Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.

Never operate the A/C unit with wet hands.

Use air conditioner on a single dedicated circuit within the specified amperage rating.

Use on a properly grounded outlet only.

Do not remove ground prong of plug.

Do not cut or modify the power supply cord.

Do not use extension cords with the unit.

Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, goggles, clothing, adequately insulated tools, and testing equipment etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

REFRIGERATION SYSTEM HAZARDS:

Use approved standard refrigerant recovering procedures and equipment to relieve pressure before opening system for repair.

Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor to moderate injury.

Be extremely careful when using an oxy-acetylenetorch. Direct contact with the torch’s flame or hot surfaces can cause serious burns.

Make sure to protect personal and surrounding property with fire proof materials.

Have a fire extinguisher at hand while using a torch.

Provide adequate ventilation to vent off toxic fumes, and work with a qualified assistant whenever possible.

Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks, flushing etc.

Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves, safety glasses, clothing etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

MECHANICAL HAZARDS:

Extreme care, proper judgment and all safety procedures must be followed when testing, troubleshooting, handling, or working around unit with moving and/or rotating parts.

Be careful when, handling and working around exposed edges and corners of sleeve, chassis, and other unit components especially the sharp fins of the indoor and outdoor coils.

Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

3

PROPERTY DAMAGE HAZARDS

FIRE DAMAGE HAZARDS:

Read the Installation/Operation Manual for this air conditioning unit prior to operating.

Use air conditioner on a single dedicated circuit within the specified amperage rating.

Connect to a properly grounded outlet only.

Do not remove ground prong of plug.

Do not cut or modify the power supply cord.

Do not use extension cords with the unit.

Failure to follow these instructions can result in fire and minor to serious property damage.

WATER DAMAGE HAZARDS:

Improper installation maintenance, or servicing of the air conditioner unit, or not following the above Safety Warnings can result in water damage to personal items or property.

Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit.

Do not drill holes in the bottom of the drain pan or the underside of the unit.

Failure to follow these instructions can result in result in damage to the unit and/or minor to serious property damage.

INTRODUCTION

This service manual is designed to be used in conjunction with the operation and installation manual provided with each unit.

This service manual was written to assist the professional HVAC service technician to quickly and accurately diagnose and repair any malfunctions of this product.

This manual, therefore, will deal with all subjects in a general nature. (i.e. All text will pertain to all models).

IMPORTANT: It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a proper diagnosis and repair.

(See Unit Identification.)

Discharge Air Plenum

 

Slot

 

Tab

Slot

Return Air Grille

 

Tab

 

Latches

Latch

Return air grille

4

Unit Identification

Model Number Code

S H 15 M 3 0 A

1st Digit – Function

S = Straight Cool, Value Series

H = HazardGard

3rd and 4th Digit - Approximate

BTU/HR (Cooling)

Heating BTU/Hr capacity listed in the

Specifi cation/Performance Data Section

8th Digit – Engineering

Major change

7th Digit – Options

0 = Straight Cool &

6th Digit – Voltage

3 = 230-208Volts

5th Digit

Alphabetical Modifier

RAC Serial Number Identification Guide

Serial Number

 

A

K

A

R

00001

Decade Manufactured

 

 

 

 

 

L=0

C=3

F=6

J=9

 

 

 

Production Run Number

A=1

D=4

G=7

 

 

 

 

 

B=2

E=5

H=8

 

 

 

 

Product Line

 

 

 

 

 

Year Manufactured

 

 

 

 

A=1

D=4

G=7

K=0

 

 

 

R = RAC

B=2

E=5

H=8

 

 

 

 

 

C=3

F=6

J=9

 

 

 

 

 

 

 

 

 

 

 

Month Manufactured

 

 

 

 

 

A=Jan D=Apr G=Jul K=Oct

 

 

 

 

B=Feb E=May H=Aug L=Nov

 

 

 

 

C=Mar F=Jun J=Sept M=Dec

 

 

 

 

 

 

 

 

 

 

 

 

5

HAZARDGARD APPLICATION

UL Listed for use in Class I, Division 2, Groups A, B, C and D hazardous locations.

Hazardgard is speci cally designed to cool living quarters, storage areas and other enclosures situated in hazardous locations, where speci c volatileammable liquids or gases are handled or used within enclosed containers or systems.

For more than 30 years, the Friedrich Hazardgard has endured some of the toughest and most unforgiving operating conditions imaginable. Time-testedin the eld where it counts, Hazardgard is trusted by professionals who have to get the job done. Robust engineering with design details like 33% thicker

ns extend the life of the coil. Diamonblue Technology, our anti-corrosivetreatment, provides added endurance and protection in coastal or corrosive environments.

Ideal applications

O shore oil rigs, on-shoreoil company of ces and re neries

Petrochemical sites and propane ll-upstations

Paint and varnish storage or processing plants

Grain alcohol processors or storage sites

Plant areas using strong solvents or chemicals

Munitions plants or armories

PVC or plastics plants and processing points

Recycling plants

Furniture re nishing/stripping workshops

Fertilizer plants

Of ce complexes where methane is a by-product

Hazardous materials storage

| HAZARDOUS DUTY|

6

Specifications and PERFORMANCE DATA

Cooling Performance Data

 

EVAPORATOR AIR

 

 

 

 

 

OPERATING

ELECTRICAL RATINGS

R-410AREF.

 

BREAKER

 

TEMP. DEG. F

CONDENSER

Discharge

Suction

Super

Sub-

PRESSURES

 

FUSE

 

 

 

 

 

 

 

Discharge

 

TEMPERATURE

Temp

Temp

Heat

Cooling

 

 

 

 

Locked Rotor

 

Voltage

60 Hertz

 

Temp. Drop F.

DEG. F

Suction

Discharge

Amps Cool

Amps Heat

Charge in OZ.

 

 

Air

 

 

 

 

 

 

 

 

 

 

Amps

 

 

Amps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SH15M30A

54

26

127

186

67

18

35

137

480

6.9

-

43

50

208 / 230

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SH15M30A

54

26

185

124

68

15

38

137

485

9.1

-

43

42.7

208 / 230

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speci cations

 

 

 

 

 

 

 

 

 

 

Energy

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ef ciency

Moisture

Air Direction

Room Side Air

 

Cooling Capacity

 

Electrical Characteristics (60 Hertz)

 

Ratio AHAM

Removal

Controls

Circulation

Model

(BTU/Hr.- AHAM)

Volts Rated

Amps AHAM

Watts

 

 

EER

(Pints/ Hr.)

 

 

 

CFM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SH15M30A

14500/14000

 

230/208

 

6.9/7.4

1495/1443

 

9.7/9.7

 

6.0

8-way

 

 

375

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SH20M30A

19500/19000

 

230/208

 

9.1/10.0

2074/2021

 

9.4/9.4

 

4.0

8-way

 

 

375

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Installation Information

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dimensions

 

 

 

 

 

 

 

 

Circuit Rating

 

 

 

 

 

 

 

 

 

Window Width

Thru-The-Wall

Breaker or

Weight

 

 

 

 

(Inches)

 

 

 

 

 

 

 

 

 

 

 

 

(Inches)

Finished Hole (Inches)

T - D Fuse

 

(Lbs.)

 

 

 

 

 

 

 

 

 

 

 

 

Depth

Depth J Box

Minimum

Minimum

 

 

 

 

 

 

 

 

 

 

 

 

Overall

to Louvers

Extension

Extension

 

 

 

 

 

 

 

 

 

Model

Height

Width

 

 

 

Into Room

Outside

Min.

Max .

Height

Width

Max. Depth

Volts - Amps

Net

Shipping

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SH15M30A

15 15/16

25 15/16

27 3/8

6

 

3 1/16

16 15/16

27 7/8

42

16 3/16

26 3/16

6

250V

- 15A

156

168

SH20M30A

17 15/16

25 15/16

27 3/8

6

 

3 1/16

16 15/16

27 7/8

42

18 3/16

26 3/16

6

250V

- 15A

160

174

Due to continuing engineering research and technology, specifications are subject to change without notice. Manufactured under U.S. Design Patent

DES 368, 306 decorative front; Utility Patent 5, 622, 058. MAXIMUM outdoor ambient operating temperature is 130°F. MAXIMUM TEMPERATURE RATING FOR CLASS I, DIVISION 2, GROUPS A,B,C,D.

OPERATING TEMPERATURE CODE T3B

STANDARD ON ALL M ODEL S.

This advanced corrosion protection treatment protects the outdoor coil against deterioration and extends the life of the unit especially in harsh coastal environments.

Max.

Wall

Depth

R-410A

Junction

Box

All models use environmentally

Front friendlyR-410Arefrigerant.

SIDE VIEW

7

7

electrical DATA

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before service or installation.

All electrical connections and wiring MUST be installedbyaqualifiedelectricianandconformto the National Electrical Code and all local codes which have jurisdiction.

Failure to do so can result in personal injury or death.

NOTICE

FIRE HAZARD

Not following the above WARNING could result in fire or electrically unsafe conditions which could cause moderate or serious property damage.

Read, understand and follow the above warning.

electrical REQUIREMENTS

ALL FIELD WIRING MUST MEET THE REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE (ANSI/NFPA 70)

ARTICLE 501.

THE FIELD-PROVIDEDCIRCUIT PROTECTION DEVICE (HACR CIRCUIT BREAKER OR TIME DELAY FUSE)

MUST NOT EXCEED THE AMPACITY INDICATED ON THE PRODUCT NAMEPLATE.

IMPORTANT: Before you begin the actual installation of your air conditioner, check local electrical codes and the information below.

Your air conditioner must be connected to a power supply with the same A.C. voltage and frequency (hertz) as marked on the data plate located on the chassis. Only alternating current (A.C.), no direct current (D.C.), can be used.

An overloaded circuit will invariably cause malfunction or failure of the air conditioner therefore, it is extremely important that the electrical power is adequate. Consult your power company if in doubt.

Model Number

Connection Type

Circuit Rating

Time Delay Fuse

 

 

 

 

 

SH15

Junction Box

250V-15Amp

 

 

 

SH20

Junction Box

250V-15Amp

 

 

 

8

HAZARDGARD SPECIAL FEATURES

Permanent Split-Capacitor,totally enclosed fan motor to assure efficient operation even under adverse electrical conditions. Motor has a special stainless steel shaft to resist corrosion and a hermetically sealed overload forarc-freeoperation.

High capacity compressor with internal hermetically sealed overload.

Solid-staterelay contains transient voltage suppressor to protect controls against transient voltage spikes.

Provides solid state switches for arc-freeoperation.

Hot gas bypass low ambient control to permit operation without freezing at outdoor ambient temperatures as

low as 45°F (7°C).

Environmentally sealed on-offswitch and gold plated

contacts in thermostat for corrosion resistance.

Electrodeposited epoxy primer and alkyd enamel, both oven-bakedfor an attractive,long-lastingfinish.

Copper tubing/aluminum fin coils.

Galvanized steel cabinet and base pan, all bonderized.

Slide-outchassis for easy installation in window orthrough–the–wall.

Extra insulation inside, including completely insulated plenum chamber for quieter, more efficient cooling.

Entire unit test run in environmental chamber before crating.

Eight–wayair flow control for uniform air circulation.

Condensate drain with exclusive mosquito trap.

15 amp circuit with time-delayfuse required. Accommodates direct wiring.

Long lasting 3/8” (10mm) thick air filter, germicidally treated, easily removed for cleaning.

Friedrich Air Conditioning quality has been proven by more than 25 years of successful experience from the Gulf of Mexico to the searing sands of the Arabian desert.

Control Panel

Function Control (Power)

This switch is a double pole, single throw toggle switch.

ON - Turns everything on.

OFF - Turns everything off.

Temperature Control

The knob at the bottom is the thermostat which is a cross ambient type used to maintain the desired comfort level. The thermostat reacts only to a change in temperature at the bulb location - turn the knob clockwise to set cooler, counterclockwise for warmer.

Exclusive

Friedrich leads with the first UL Listed Room Air

Conditioners designed to cool living quarters and other enclosures situated in hazardous locations where specific volatile flammable liquids or gases are handled or used with enclosed containers or systems. Friedrich Hazardgard room air conditioners are designed to meet the National Electrical Code, Article 500 requirements for Class I, Division 2, Groups A, B, C, D Hazardous locations, and are the only air conditioners UL Listed for this application. THIS UNIT IS LISTED BY UNDERWRITERS LABORATORIES FOR USE IN CLASS I, DIVISION 2,GROUPS A, B, C, D HAZARDOUS LOCATIONS.

Operating Temperature Code: T3B.

9