Connect Refrigerant Lines

17.Install the valve cores.

	18.	Install the R-410A thermal expansion valve specified for this
		system in the indoor coil.
		NOTE: R-410A systems use only thermal expansion valves.
	19.	Pressurize the lines and indoor coil with a pressure not to
	A	exceed 20 psig.
	A	Leak test the lines with a pressure not to exceed 20 psig.
	20.	Leak test the lines with a pressure not to exceed 20 psig.
	21.	Open the suction and liquid service valves fully.
	22.	Insulate the suction line with refrigerant line insulation
		material of ¹⁄₄" or more wall thickness.
	23.	Pack insulating material around refrigerant lines where they
		penetrate the structure to protect the lines and to minimize

B	vibration transmission.

A. Suction pressure tap

B. Liquid pressure tap

Refrigerant lines must be connected by a licensed, EPA certified refrigerant technician in accordance with established procedures.

IMPORTANT:

■Connecting refrigerant lines must be clean, dehydrated, refrigerant-grade copper lines. Heat pumps should be installed only with specified line sizes for approved system combinations with elevation differences up to 15 ft and total length of up to 50 ft. See the Suction Line Sizes and Liquid Line Sizes charts later in this section.

■Avoid sharp bends or possible kinking in the refrigerant lines during installation as this may cause a reduction in performance.

■Use care with the refrigerant lines during the installation process. Sharp bends or possible kinking in the lines will cause a reduction in performance.

■To avoid contamination of the refrigerant system, do not remove the caps from the lines or system connection points until connections are ready to be completed.

Install Thermal Expansion Valve

W4GH6 heat pumps are designed for use with thermal expansion valve systems only. An R-410A system will not operate properly with an R-22 thermal expansion valve.

Thermal expansion valves equipped with Chatleff-type fittings are available from the manufacturer. See Thermal Expansion Valve Kits chart in “System Requirements.”

Thermal Expansion Valve Installation

	E
	D
A. Distributor	D. Liquid line stub
B. Teflon® seal	E. Strainer
C. Thermal expansion valve	F. Teflon® seal

To install the thermal expansion valve:

1.Separate the distributor assembly.

2.If a piston orifice is installed, remove the piston orifice and old Teflon® seal and discard.

3.Insert nozzle end of the thermal expansion valve along with a new Teflon® seal into the distributor.

4.Tighten to 20 to 30 ft lbs. Use backup wrench on all wrench flats.

NOTE: Overtightening may crush the Teflon® seal and cause a leak.

5.Attach liquid line portion of distributor assembly along with new Teflon® seal to the inlet of the thermal expansion valve.

®Teflon is a registered trademark of E.I. Dupont de Nemours and Company.

W4GH6 specifications

The Whirlpool W4GH6 is a cutting-edge refrigerator designed to meet the demands of modern households. With its sleek design and advanced features, it stands out as a reliable appliance that combines functionality with style.

One of the main features of the W4GH6 is its generous storage capacity. This refrigerator provides ample space for all your food storage needs, ensuring that you can store everything from fresh produce to large party platters without any hassle. The adjustable shelves allow for customizable configurations, accommodating items of various sizes.

Equipped with advanced cooling technologies, the Whirlpool W4GH6 ensures that your food stays fresher for longer. The refrigerator incorporates a multi-air flow system, which efficiently circulates cool air throughout the compartments, maintaining consistent temperatures. This technology helps prevent hotspots and ensures that all items, whether on the top or bottom shelf, receive equal cooling.

Energy efficiency is another hallmark of the W4GH6. It features an Energy Star certification, indicating that it meets strict energy efficiency guidelines set by the US Environmental Protection Agency. This means you can enjoy substantial savings on your energy bills while minimizing your environmental footprint.

The W4GH6 also offers a range of intelligent features designed for user convenience. The refrigerator comes with a temperature management system that allows users to set and monitor temperatures easily. Additionally, its frost-free operation means that you won't have to deal with the hassle of manual defrosting, making maintenance straightforward.

In terms of design, the Whirlpool W4GH6 boasts a modern aesthetic that complements any kitchen décor. The stainless steel finish not only adds a touch of elegance but also resists fingerprints and smudges, ensuring the appliance remains looking pristine.

For families with busy lifestyles, the Whirlpool W4GH6 includes a water and ice dispenser, providing easy access to chilled water and ice on demand. This feature is particularly convenient for hydration during hot days or for quickly preparing drinks for guests.

In summary, the Whirlpool W4GH6 is a versatile refrigerator that excels in both performance and style. Its spacious interior, advanced cooling technologies, and energy-efficient design make it a perfect choice for anyone looking to upgrade their kitchen appliances. With user-friendly features and a contemporary look, the W4GH6 is tailored to enhance your culinary experience while keeping your food fresher for longer.