STEP 5a: For through-the-floor water line and electrical wires, mark another centerline 6 inches (152 mm) from the back wall (fig. 4).

Fig. 4

STEP 5b: For through-the-wall water line and electrical wires, mark a centerline 8 inches (203 mm) up from the floor centerline (fig. 5).

Fig. 5

STEP 6: Make a 4-3/4 inch (121 mm) diameter hole (for most floor flanges) or a 5-1/8 inch (130 mm) diameter hole (for swivel joint floor flange) at the centerline mark furthest from the wall. Make a 1 inch (25 mm) hole at the mark closer to the wall for the water line and electrical wires (fig. 6).

Fig. 6

IMPORTANT: The prefered floor flange installation method is to mount the floor fIange directly on the finished floor. However, if the bottom of floor flange and bottom of china toilet must be mounted at differ- ent heights, the floor flange must be mounted within 3/8 inch (10 mm) of the bottom of the toilet (see il- lustrations in next column) or leakage may result.

Below-Floor Installation

Above-Floor Installation

STEP 7: Insert floor flange into larger hole and secure to the floor with #12x3/4-inch long flat head wood or sheet metal screws (fig.7).

Fig. 7

STEP 8: Route 1/2-inch (13mm) PEX tubing through the smaller hole and install a PEX 1/2-inch MPT fitting (fig. 8).

NOTE: A water shut-off valve should be installed in the water line to the toilet for maintenance requirements.

Fig. 8

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Dometic 3400, 3300 owner manual
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3400, 3300 specifications

The Dometic 3300 and 3400 series represent a significant advancement in mobile cooling technology, specifically designed for recreational vehicles, campers, and outdoor enthusiasts. These roof-mounted air conditioning units offer efficient cooling solutions that prioritize comfort and convenience while maintaining a lightweight and compact design.

One of the standout features of both the Dometic 3300 and 3400 is their high cooling capacity, capable of efficiently cooling spaces up to 30 feet long. This powerful cooling capability ensures that users can enjoy a comfortable indoor climate, even during the hottest days of summer. The units also come equipped with a superior airflow system, allowing for even distribution of cool air throughout the living space, enhancing overall comfort.

A key technology highlight of the Dometic 3300 and 3400 is the use of a variable speed compressor. This innovative feature adjusts the cooling output based on the ambient temperature, leading to improved energy efficiency and reduced noise levels compared to conventional fixed-speed units. The result is a quieter operation that allows users to enjoy a peaceful environment while staying cool.

The design of the Dometic 3300 and 3400 series also emphasizes user-friendly operation. With an intuitive digital thermostat, users can easily set their desired temperature and make adjustments as needed. The units also feature a remote control option, providing added convenience from anywhere in the RV or camper.

Durability is another cornerstone of the Dometic 3300 and 3400. Built with robust materials that withstand the rigors of outdoor use, these units are designed to endure varying weather conditions. Moreover, the sleek, low-profile design not only enhances the aesthetic of the vehicle but also minimizes wind resistance, contributing to better fuel efficiency during travel.

In addition to their cooling capabilities, both models include an integrated heat pump option, allowing for climate control throughout the year. This versatility makes the Dometic 3300 and 3400 ideal for users who camp in diverse conditions, from sweltering summer heat to chilly fall evenings.

Overall, the Dometic 3300 and 3400 series air conditioning units combine advanced technology with practical features, creating an efficient and effective solution for maintaining a comfortable environment in mobile living spaces. Their blend of performance, durability, and user-friendly operation establishes them as leaders in the market for RV air conditioning solutions.
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