Pipe Sizing Guidelines, Outdoor Condensing Units

PIPE SIZING GUIDELINES

Piping design and line sizing is the responsibility of the installer. The following table can be used as a guideline. The ‘Net Distance to Condensing Unit’ column allows 50% of the Distance for the equivalent restriction to refrigerant flow caused by elbows. We recommend the installer minimize restriction to refrigerant flow by incorporating the following features in their design: Use fewer elbows; use long radius elbows when possible; use 45° elbows instead of 90° elbows, if possible. A vertical suction riser greater than 3 to 4 feet in height should have a P trap at the base to facilitate oil return up the riser. For long vertical risers, an additional P trap is recommended for each 20 feet of riser to assure proper oil movement.

Model		Less Equivalent	Net Distance	Suction Line	Liquid Line
	Total Equivalent Length	Length Allowance	Net Distance	Suction Line	Liquid Line
	Total Equivalent Length	Length Allowance	to Condensing Unit	Size	Size
		for Elbows	to Condensing Unit	Size	Size
		for Elbows
	Less Than 45 Feet	15 Feet	Less Than 30 Feet	7/8"	3/8"
HQC135	From 45 to 300 Feet	100 Feet	From 30 to 200 Feet	11/8"	1/2"
	Over 300 Feet	100 Feet	Over 200 Feet	13/8"	1/2"
	Less Than 75 Feet	25 Feet	Less Than 50 Feet	11/8"	1/2"
HQC200	From 75 to 375 Feet	125 Feet	From 50 to 250 Feet	13/8"	1/2"
	Over 375 Feet	125 Feet	Over 250 Feet	15/8"	5/8"

Additional information is available from your compressor manufacturer's system design manual.

OUTDOOR CONDENSING UNITS

Outdoor condensing units are equipped with weather resistant outdoor covers, crankcase heaters and head pressure valves to control the flow of refrigerant through the condenser.

Refrigerant charging of the system in ambients above 70°F requires additional charging equal to the pounds necessary to flood the condenser under low ambient conditions, as defined in the chart below:

MODEL	CONDENSING UNIT	APPROXIMATE ADDITIONAL
	(HP)	R-404A CHARGE
HQC135	3 or 31/4	8 lbs
HQC200	5	15 lbs

Charging of the system with refrigerant in ambients below 70°F requires caution to prevent overcharging since the pressure control valve will already be partially functioning and the amount of additional charge must be determined.

VALVE AND PRESSURE SETTINGS

LOW PRESSURE CONTROL SETTING

(Refrigerant R-404A)
Low Pressure Cut-In	30 psig
Low Pressure Cut-Out	10 psig
The ideal superheat at the evaporator outlet is 8 – 10°F.

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HQC200, ML-124070, ML-124069, HQC135 specifications

Hobart, a name synonymous with quality and innovation in food preparation equipment, boasts a diverse line of products designed for the industrial kitchen. Among their offerings are the HQC135, ML-124069, ML-124070, and HQC200, each engineered to meet the demanding needs of a commercial kitchen.

The HQC135 is a dynamic countertop food processor that excels in versatility and efficiency. Designed for both small and large-scale operations, it features a powerful motor capable of handling various food items, from fresh vegetables to nuts and meats. Its precision cutting blades are crafted from high-quality stainless steel, ensuring durability and optimal performance. The intuitive control panel allows users to adjust settings for speed and time, making it facile to achieve the desired texture and consistency.

Next, the ML-124069 and ML-124070 are collaborative models specializing in food storage solutions. These models are characterized by their robust construction, designed to withstand the rigors of daily use in commercial kitchens. Both models come equipped with advanced temperature control systems, ensuring that perishable goods are maintained at optimal conditions. Their user-friendly interfaces include digital displays that provide real-time monitoring, allowing chefs to manage inventory efficiently and safely.

The HQC200 stands out in Hobart's lineup as an exemplary mixer with high-capacity capabilities suited for large batch production. This model integrates cutting-edge technology, including a planetary mixing mechanism that ensures thorough mixing and blending of ingredients. Its ergonomic design includes a tilt-back head for easy access to the mixing bowl and a variety of available attachments to accommodate different mixing requirements—from kneading dough to whipping cream. The HQC200 is also equipped with a safety interlock system, ensuring safe operation at all times.

Collectively, these models reflect Hobart's commitment to quality, innovation, and ease of use, making them essential components for any commercial kitchen. The emphasis on user-friendly interfaces, advanced technology, and superior materials not only enhances efficiency but also delivers excellent results, meeting the rigorous demands of food service professionals. Whether you require food processing, storage, or mixing solutions, Hobart's range provides the functionality and reliability that helps to elevate culinary operations to new heights.