Friedrich Sh20m30b-a, Sh20m30-a, Sh20m30a-a, Sh15m30b-a, Sh15m30a-a Owner's Manual
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Service Manual
2 0 11
Hazardous Duty
Room Air Conditioner
R-410A Models
Cool Only
SH15M30*
SH20M30*
HG-ServMan (1-11) |
*Last character may vary. |
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Table Of Contents |
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Important Safety Information ..................................................................................................................... |
2-4 |
Introduction ................................................................................................................................................... |
4 |
Unit Identifi cation .......................................................................................................................................... |
5 |
Hazardgard Application ................................................................................................................................ |
6 |
Performance Specifi cations and Installation Data ........................................................................................ |
7 |
Electrical Data .............................................................................................................................................. |
8 |
Hazardgard Special Features ...................................................................................................................... |
9 |
Component Defi nitions ............................................................................................................................... |
10 |
Component Testing ................................................................................................................................ |
11-12 |
R-410A Sealed 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
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IMPORTANT SAFETY INFORMATION
The information contained in this manual is intended for use by a qualifi ed 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 unqualifi ed persons can result in subjecting the unqualifi ed 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 qualifi ed 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 specifi ed amperage rating.
•Use on a properly grounded circuit only.
•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-acetylene torch. Direct contact with the torch’s fl ame or hot surfaces can cause serious burns.
•Make sure to protect personal and surrounding property with fi re proof materials.
•Have a fi re extinguisher at hand while using a torch.
•Provide adequate ventilation to vent off toxic fumes, and work with a qualifi ed assistant whenever possible.
•Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks, fl ushing 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 fi ns 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
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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 specifi ed amperage rating.
•Connect to a properly grounded circuit only.
•Do not use extension cords with the unit.
•Failure to follow these instructions can result in fi re 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 suffi cient 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 Identifi cation.)
Bypass Valve |
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Capillary Tubes |
Condenser |
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Air Discharge |
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Compressor |
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Condenser/Fan Blade |
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Fan Blade |
Shroud |
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Electrical |
Condenser Coil |
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Compartment |
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Condenser |
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Shroud Brace |
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On/Off Switch |
Fan/Blower |
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Thermostat |
Motor |
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Condenser |
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Air Intake |
Air Intake |
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Indoor Blower |
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Air Discharge |
Wheel |
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Front Cover |
Sleeve |
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Air Discharge
Vents
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UNIT IDENTIFICATION
Model Number Code
S H 15 M 3 0 A - 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
9th Digit – Engineering Suffi x
Indicates Modifi cation
(Subject to change)
8th Digit – Marketing Suffi x
Indicates Modifi cation
(Subject to change)
7th Digit – Options
0 = Straight Cool &
6th Digit – Voltage
3 = 230-208 Volts
5th Digit - Model Series/Year Introduced
M=2010
RAC Serial Number Identifi cation Guide
Serial Number |
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00001 |
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Decade Manufactured |
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L=0 |
C=3 |
F=6 |
J=9 |
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Production Run Number |
A=1 |
D=4 |
G=7 |
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B=2 |
E=5 |
H=8 |
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Year Manufactured |
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Product Line |
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A=1 |
D=4 |
G=7 |
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R = RAC |
B=2 |
E=5 |
H=8 |
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C=3 |
F=6 |
J=9 |
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Month Manufactured |
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A=Jan D=Apr G=Jul K=Oct |
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B=Feb E=May H=Aug L=Nov |
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C=Mar F=Jun J=Sept M=Dec |
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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 volatile €ammable 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-tested in 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-corrosive treatment, provides added endurance and protection in coastal or corrosive environments.
Ideal applications
O!shore oil rigs, on-shore oil company of•ces and re•neries
Petrochemical sites and propane •ll-up stations
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
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SPECIFICATIONS AND PERFORMANCE DATA
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Cooling Performance Data |
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EVAPORATOR AIR |
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OPERATING |
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ELECTRICAL RATINGS |
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R-410A REF. |
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BREAKER |
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TEMP. DEG. F |
CONDENSER |
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PRESSURES |
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FUSE |
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Discharge |
Suction |
Super |
Sub- |
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Discharge |
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TEMPERATURE |
Temp |
Temp |
Heat |
Cooling |
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Locked Rotor |
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Voltage |
60 Hertz |
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Temp. Drop F. |
DEG. F |
Suction |
Discharge |
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Amps Cool |
Amps Heat |
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Charge in OZ. |
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Air |
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Amps |
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Amps |
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SH15M30* |
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54 |
26 |
127 |
186 |
67 |
18 |
35 |
137 |
480 |
6.9 |
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43 |
50 |
208 / 230 |
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26 |
185 |
124 |
68 |
15 |
38 |
137 |
485 |
9.1 |
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43 |
42.7 |
208 / 230 |
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SH15M30* |
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* Due to continuing research in new energy-saving technology, performance data and 8th and 9th character are subject to change without notice.
Speci•cations
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Energy |
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Efficiency |
Moisture |
Air Direction |
Room Side Air |
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Cooling Capacity |
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Electrical Characteristics (60 Hertz) |
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Ratio AHAM |
Removal |
Controls |
Circulation |
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Model |
(BTU/Hr.- AHAM) |
Volts Rated |
Amps AHAM |
Watts |
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(Pints/ Hr.) |
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CFM |
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SH15M30* |
14500/14000 |
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230/208 |
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6.9/7.4 |
1495/1443 |
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9.7/9.7 |
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6.0 |
8-way |
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375 |
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SH20M30* |
19500/19000 |
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230/208 |
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9.1/10.0 |
2074/2021 |
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9.4/9.4 |
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4.0 |
8-way |
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375 |
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Installation Information |
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Circuit Rating |
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Dimensions |
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Window Width |
Thru-The-Wall |
Breaker or |
Weight |
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Finished Hole (Inches) |
T - D Fuse |
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Depth |
Depth J Box |
Minimum |
Minimum |
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Overall |
to Louvers |
Extension |
Extension |
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Model |
Height |
Width |
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Into Room |
Outside |
Min. |
Max . |
Height |
Width |
Max. Depth |
Volts - Amps |
Net |
Shipping |
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SH15M30* |
15 15/16 |
25 15/16 |
27 3/8 |
6 |
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3 1/16 |
16 15/16 |
27 7/8 |
42 |
16 3/16 |
26 3/16 |
6 |
250V |
- 15A |
156 |
168 |
SH20M30* |
17 15/16 |
25 15/16 |
27 3/8 |
6 |
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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, spec ¿cations 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
Max.
Wall
Depth
S TAN DARD ON A LL M ODE L S
This advanced corrosion protection treatment protects the outdoor coil against deterioration and extends the life of the unit especially in harsh coastal environments.
SIDE VIEW
Junction
Box
Front
7 |
7 |
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ELECTRICAL DATA
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or installation.
All electrical connections and wiring MUST be installed by a qualifi ed electrician and conform to 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 fi re 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-PROVIDED CIRCUIT 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 |
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Time Delay Fuse |
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SH15 |
Junction Box |
250V-15 Amp |
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SH20 |
Junction Box |
250V-15 Amp |
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8
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HAZARDGARD SPECIAL FEATURES
•Permanent Split-Capacitor, totally enclosed fan motor to assure effi cient operation even under adverse electrical conditions. Motor has a special stainless steel shaft to resist corrosion and a hermetically sealed overload for arc-free operation.
•High capacity compressor with internal hermetically sealed overload.
•Solid-state relay contains transient voltage suppressor to protect controls against transient voltage spikes.
Provides solid state switches for arc-free operation.
•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-off switch and gold plated contacts in thermostat for corrosion resistance.
•Electrodeposited epoxy primer and alkyd enamel, both oven-baked for an attractive, long-lasting fi nish.
•Copper tubing/aluminum fi n coils.
•Galvanized steel cabinet and base pan, all bonderized.
•Slide-out chassis for easy installation in window or through–the–wall.
•Extra insulation inside, including completely insulated plenum chamber for quieter, more effi cient cooling.
•Entire unit test run in environmental chamber before crating.
•Eight–way air fl ow control for uniform air circulation.
•Condensate drain with exclusive mosquito trap.
•15 amp circuit with time-delay fuse required. Accommodates direct wiring.
•Long lasting 3/8” (10mm) thick air fi lter, 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.
(Fan motor runs continuously)
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 fi rst UL Listed Room Air Conditioners designed to cool living quarters and other enclosures situated in hazardous locations where specifi c volatile fl ammable 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
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