Friedrich R-410A service manual Hazardgard Special Features, Control Panel

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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 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 finish.

•

•Copper tubing/aluminum fin 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 efficient cooling.

•Entire unit test run in environmental chamber before crating.

•Eight–way air flow 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 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.

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Contents Hazardous Duty Room Air Conditioner Table Of Contents Your safety and the safety of others are very important Electrical HazardsRefrigeration System Hazards Mechanical HazardsFire Damage Hazards IntroductionWater Damage Hazards 15 M 3 0 a Hazardgard Application Ideal applicationsSpecifications and Performance Data Electric Shock Hazard Fire HazardHazardgard Special Features Control PanelComponent Definitions Mechanical componentsCapacitor Check with Capacitor Analyzer Component TestingCapacitor Connections Thermostat High Pressure Hazard410A Sealed System Repair Considerations Refrigeration system under high pressureEquipment Must be Capable 410A Sealed Refrigeration System RepairsEquipment Required Risk of Electric ShockBurn Hazard Method Of Charging / RepairsFreeze Hazard Undercharged Refrigerant Systems Overcharged Refrigerant SystemsRestricted Refrigerant System Compressor Checks Recommended procedure for compressor replacement Compressor ReplacementSingle Phase Resistance Test High TemperaturesExplosion Hazard Routine Maintenance Front Cover Sleeve / DrainClearances Electrical Indoor TemperaturesOutdoor Temperature CompressorTroubleshooting Only. Cycles on Problem Possible Cause Electromechanical Control Cool only Models Hazardgard Room AIR Conditioners Limited Warranty Limited ONE Year Parts WarrantyTechnical Support Contact Information Page Friedrich AIR Conditioning CO
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R-410A specifications

Friedrich R-410A is an advanced refrigerant widely used in HVAC (Heating, Ventilation, and Air Conditioning) systems, known for its high efficiency and environmental friendliness. As a hydrofluorocarbon (HFC) blend, R-410A has become the preferred alternative to R-22, which is being phased out due to its ozone-depleting potential. One of the main features of R-410A is its high latent heat of vaporization, which allows for efficient heat transfer and improved cooling performance in air conditioning units.

Technologically, R-410A operates at higher pressures than older refrigerants, meaning systems designed for R-410A need to be built with more robust components to safely handle these pressures. This results in a more compact system design that offers enhanced performance and reliability. The dual-component nature of R-410A—composed of difluoromethane (R-32) and pentafluoroethane (R-125)—provides an optimal balance of thermodynamic properties, leading to superior energy efficiency, especially in variable speed applications.

In terms of characteristics, R-410A has a higher cooling capacity, which enables HVAC systems to effectively cool larger spaces or run more efficiently when cooling smaller areas. The refrigerant is non-toxic and non-flammable, which enhances safety during its use. In addition, R-410A has a lower global warming potential relative to other refrigerants, making it a more environmentally responsible choice for modern cooling systems.

Moreover, R-410A systems typically require less refrigerant charge due to their efficiency, contributing to reduced greenhouse gas emissions. The adoption of R-410A aligns with regulatory trends aimed at minimizing the environmental impact of refrigerants in cooling applications.

Overall, the Friedrich R-410A refrigerant embodies a combination of technology and environmental stewardship, making it a cornerstone of contemporary HVAC design. Its ability to provide effective and energy-efficient cooling solutions while being compliant with modern environmental regulations positions R-410A as the refrigerant of choice for engineers and installers focused on sustainability and performance in air conditioning systems.
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