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Dometic 640315C - User Manual

Dometic 640315C
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CLIMATE CONTROL
AIR CONDITIONERS
Form No. 3317817.000 1/21 | ©2021 Dometic Corporation
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
Brisk Air (457915, 459516), Brisk II (B57915, B59516),
High Performance (540315, 540316), Blizzard NXT (H540315, H540316),
Penguin (640312, 640315, 640316), Penguin II (640312C, 640315C, 640316C),
FreshJet (FJX3473, FJX3573)
EN
Value Air Distribution Box,
Mechanical
Installation and Operation Manual . ........2

Table of Contents

Questions and Answers

  • J
    Justin GarzaAug 17, 2025
    Why is my Dometic 640315C not maintaining the desired temperature?
    • M
      mcclainjennaAug 17, 2025
      Your Dometic Air Conditioner might struggle to maintain the desired temperature if the RV is gaining heat due to high outdoor temperatures or humidity. To mitigate this, park the RV in a shaded area. Additionally, use window shades, blinds, or curtains, keep windows and doors closed or minimize their use, and avoid using heat-producing appliances inside the RV. You can also operate the product in the High Fan/Cooling mode or start the product before the outside temperature increases.
  • K
    Kimberly WolfAug 20, 2025
    How to fix a Dometic 640315C that won't turn on?
    • S
      Stephanie EvansAug 20, 2025
      If your Dometic Air Conditioner isn't working, check if the circuit breaker has been activated and reset it if necessary. Also, inspect the fuse and replace it if it has blown.
  • P
    Patrick LucasAug 22, 2025
    What to do if my Dometic Air Conditioner doesn't cool enough?
    • M
      Michael TurnerAug 23, 2025
      If your Dometic Air Conditioner isn't maintaining the desired temperature, consider that the RV's heat gain could be affected by high outdoor temperatures or humidity. Try parking the RV in a shaded area. Additionally, use window shades, blinds, or curtains, keep windows and doors closed or minimize their use, and avoid using heat-producing appliances inside the RV. You can also operate the product in the Turbo Fan/Cooling mode or start the product before the outside temperature increases.
  • D
    David TerryAug 25, 2025
    What to do if frost forms on the evaporator coil of my Dometic 640315C?
    • X
      xcochranAug 26, 2025
      If you notice frost forming on the evaporator coil of your Dometic Air Conditioner, it could be due to very cold output at a very low air speed, or the outside temperature may be relatively low. First, inspect and clean the filter. Then, open the air vents and remove any obstructions. Confirm that a minimum of two distribution vents, or the quick cool vent and one vent, are open. Adjust the thermostat control knob to a warmer setting (counterclockwise). You can also operate the product on any Fan Only setting until the coil is free of frost.
  • M
    melissafrancisAug 27, 2025
    How to prevent condensation forming on ceilings from Dometic 640315C Air Conditioner?
    • J
      jasonbakerAug 27, 2025
      To reduce condensation forming on ceilings, windows, or other surfaces when using your Dometic Air Conditioner, keep doors and windows closed when the unit is in operation. This minimizes the amount of water vapor in the air that can condense on cooler surfaces.
  • P
    Pamela MaciasAug 30, 2025
    What to do if Dometic 640315C is not working when connected to land line?
    • C
      Charles RobertsAug 30, 2025
      If your Dometic Air Conditioner isn't working or is operating poorly when connected to a land line, first confirm that the land line is plugged into the power supply and that it is properly-sized for the product's power load.
  • J
    Jenna VelezSep 1, 2025
    What to do if Dometic Air Conditioner is not working when connected to generator?
    • A
      anthonyromeroSep 1, 2025
      If your Dometic Air Conditioner is not working, or working poorly, when connected to the motor generator, you should confirm the motor generator is running and producing power. Also, confirm the fuse or circuit breaker is open, ensuring the fuse is not blown, or the circuit breaker is on and not activated.
  • R
    Ralph BrownSep 4, 2025
    What to do if my Dometic 640315C does not operate?
    • L
      Laura ColemanSep 4, 2025
      If your Dometic Air Conditioner isn't working, the circuit breaker may have activated. Try setting or resetting the circuit breaker. Alternatively, a fuse may have blown, in which case you should replace the fuse.
  • J
    James MartinezSep 6, 2025
    What to do if my Dometic 640315C does not operate well when connected to a land line?
    • S
      sreillySep 7, 2025
      If your Dometic Air Conditioner isn't operating well when connected to a power supply by a land line, first confirm the land line is plugged into the power supply. Also, confirm the land line is properly-sized for the product’s power load.
  • G
    Gregory WilkinsSep 9, 2025
    What to do if my Dometic 640315C does not operate when connected to the motor generator?
    • T
      Tyler WalkerSep 9, 2025
      If your Dometic Air Conditioner is not working properly when the RV is connected to the motor generator, confirm the motor generator is running and producing power.

Summary

Explanation of Symbols and Safety Instructions

Recognize Safety Information

Explains the safety alert symbol and its meaning to prevent potential injury.

Understand Signal Words

Defines signal words like DANGER, WARNING, CAUTION, and NOTICE to indicate hazard severity.

Supplemental Directives

Provides important directives to reduce accident and injury risks during product installation, operation, or service.

General Safety Messages

Lists critical safety warnings concerning electrical shock, fire, and explosion hazards.

Intended Use

General Information

Tools and Materials

Lists the recommended tools and materials required for the installation process.

Model Identification

Explains how to locate model and serial number identification labels on the unit.

ADB Components

Identifies and illustrates the main components of the Air Distribution Box (ADB).

Rooftop Component Dimensions by Model

Provides external dimensions and clearance measurements for various rooftop AC models.

Freshjet Rooftop Component Dimensions

Details dimensions and clearances for the Freshjet model.

Brisk Air Rooftop Component Dimensions

Details dimensions and clearances for the Brisk Air model.

Brisk II Rooftop Component Dimensions

Details dimensions and clearances for the Brisk II model.

Blizzard NXT Rooftop Component Dimensions

Details dimensions and clearances for the Blizzard NXT model.

High Performance Rooftop Component Dimensions

Details dimensions and clearances for the High Performance model.

Penguin Rooftop Component Dimensions

Details dimensions and clearances for the Penguin model.

Penguin II Rooftop Component Dimensions

Details dimensions and clearances for the Penguin II model.

ADB Component Dimensions

Provides the internal dimensions of the Air Distribution Box (ADB) component.

Placement Requirements

Specifies the requirements for positioning the rooftop component on the RV, including structural support.

Tilt Requirements

Outlines the acceptable tilt requirements for rooftop component placement on the RV roof.

Specifications

Wiring Diagrams

Pre-Installation

Determining Your Cooling Needs

Guides the user on factors to consider when determining appropriate cooling requirements for the RV.

Preparing the RV Roof Opening

Details the process of preparing the RV roof opening, ensuring structural integrity and proper fit.

Using an Existing Roof Vent Opening

Provides instructions for preparing the roof opening when an existing vent is present.

Making a New Roof Opening

Provides instructions for creating a new roof opening if no existing vent is available.

Routing the Wiring

Describes the correct procedure for routing the 115 VAC power supply wiring for the rooftop component.

Positioning the Rooftop Component

Provides instructions on how to correctly move and place the rooftop unit over the prepared opening.

Installation

Installing the Foam Dividers

Explains how to install foam dividers to fill gaps based on specific roof thicknesses.

Roof Thickness 1.25 to 5.5 in. Foam Dividers

Table guiding foam divider selection for roof thicknesses from 1.25 to 5.5 inches.

Roof Thickness 6.0 - 7.5 in. Foam Dividers

Table guiding foam divider selection for roof thicknesses from 6.0 to 7.5 inches.

Securing the Unit

Details the process of securely fastening the rooftop component to the RV roof using mounting bolts.

Wiring the Unit to the Power Supply

Explains how to connect the unit's internal wiring to the main power supply.

Connecting the Power Supply

Details connecting the 115 VAC power supply wire and the 6-pin unit electrical cord.

Finalizing the Installation

Covers the final steps to complete the ADB installation, including filter and cover placement, and power-up.

Operation

Understanding the Controls

Explains the function and operation of the temperature and fan control knobs.

Understanding the Settings

Details the available settings for cooling and fan-only operation modes.

Cooling Operation

How to use the cooling settings for effective temperature control and dehumidification.

Fan-Only Operation

How to use the fan-only settings for air circulation and ventilation without cooling.

Cooling Fan Operation

How to use the fan settings in conjunction with cooling for optimal air distribution.

Maintenance

Cleaning the Air Filter

Instructions for periodic cleaning of the air filter to maintain unit performance.

Cleaning the ADB Housing

Guidance on cleaning the Air Distribution Box housing and control panel using mild detergent.

Troubleshooting

Disposal

Limited Two-Year Warranty

Dometic 640315C Specifications

General IconGeneral
Model640315C
TypeRooftop Air Conditioner
Cooling Capacity13, 500 BTU/h
Voltage115V
Power SupplyAC
EER9.0
Operating Current12.5 A
Air Flow320 CFM
Weight77 lbs (35 kg)

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