Volvo L-5 A/C - Air Distribution System

Figure 4. Vent location

Installing the Return Air Vent

The supplied return air vent should be installed under the bunk in the side panel, either on the passenger or driver side. The passenger side is recommended as there is less chance that it will get blocked by objects in the luggage compartment, and it will also allow easy access to the refrigerant fitting.

To install, locate the area shown in Figure 4.

The grill should be installed between the panel supports on the backside of the kickpanel. Locate the supports and cut out for the grill. A holesaw and reciprocating saw is recommended to cut out the hole. If your kit contains the 12.5" x 5.5" grills instead of the 10" x 10" grill, use a 4" holesaw to cut at least two holes behind each grill. Use of the reciprocating saw is optional for those grills.

Installing the Supply Air Distribution

For this installation, a custom air plenum must be installed, as well as the Volvo ductwork. A 4" duct will feed the Volvo ductwork, and a 6" (for the 14k system) or 4" (for the 10k system) will feed the custom air plenum.

Volvo Ductwork

To feed the Volvo ductwork, remove the passenger side window footwell and a section of the duct, as shown in Figure 5 and 6.

The duct is secured from the top by “star” screws. Below the bunk, there is a sensor which must be removed. Access the sensor from the passenger luggage door. Remove the duct from the truck, and cut a 4" hole into it as shown in Figure 7 & 8.

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Dometic VN 780, VN 830, VN 770 manual Installing the Return Air Vent, Installing the Supply Air Distribution, Volvo Ductwork
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VN 780, VN 880, VN 830, VN 770 specifications

Dometic's VN series, which includes the VN 770, VN 830, VN 880, and VN 780 models, represents a line of advanced cooling solutions designed for both commercial and recreational use. These portable refrigeration units are tailored to meet the diverse needs of outdoor enthusiasts, travelers, and businesses requiring reliable and efficient cooling options.

Starting with the VN 770, this model features a compact design while offering a generous storage capacity. Its robust construction ensures durability in rugged environments, making it an ideal choice for camping and road trips. The VN 770 is equipped with a powerful compressor, providing rapid cooling capabilities and allowing users to set and maintain temperatures between -22 °C to +10 °C. Additionally, its energy-efficient design minimizes power consumption, making it easier to rely on battery power during extended off-grid adventures.

Moving on to the VN 830, this model builds upon the strengths of the VN 770 and provides an even larger storage capacity, accommodating more items for longer trips. Its dual-zone feature allows users to simultaneously keep beverages chilled and food frozen or cooled, offering increased versatility. The VN 830 boasts intelligent temperature control technology, which automatically adjusts the cooling power based on the external temperature, optimizing performance and energy use.

The VN 880 takes convenience a step further by integrating smart technology, offering users the ability to control and monitor temperatures via a smartphone app. This connectivity feature allows for real-time adjustments, alerts for temperature changes, and energy usage tracking. The VN 880 also includes a stylish LED display panel for easy operation and monitoring.

Lastly, the VN 780 serves as a bridge between the smaller and larger models in the series. It combines the portability of the VN 770 with some of the advanced features of the VN 830 and VN 880. The VN 780 also emphasizes energy efficiency, utilizing Dometic's latest cooling technology to extend battery life during off-grid excursions.

In conclusion, the Dometic VN series offers a range of features and specifications designed to cater to various cooling needs. With models that vary in capacity and technology, campers, travelers, and business owners can find an option perfect for their requirements. Each model ensures high-quality performance, reliable durability, and energy efficiency, hallmark characteristics of Dometic’s commitment to innovation in portable refrigeration.
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