Dometic CARAVAN B3200

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User Manual120 pages

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Summary

Safety Instructions

Recognize Safety Information

Learn to identify the safety-alert symbol and its meaning for personal injury awareness.

Understand Signal Words

Understand the meaning of signal words like WARNING and CAUTION for risk assessment.

General Information

Air Conditioner Design and Application

Details the intended design and application of this air conditioner for caravans.

Factors Affecting Cooling Performance

Explains how caravan heat gain affects performance and preventative measures.

Condensation Management

Information on condensation formation and how to minimize it during operation.

Choosing Proper Location

Normal Location for Installation

Describes the standard placement for the air conditioner over a roof vent.

Alternative Locations for Installation

Recommends placement for single or dual unit installations when no roof vent is used.

Installation Instructions

Precautions

Critical safety warnings and general precautions before starting installation.

Location Selection Details

Check for obstructions, roof support, and internal obstructions for installation.

Roof Preparation

Steps for preparing the caravan roof for unit installation.

Creating a New Roof Opening

Instructions for marking and cutting a new opening if no existing vent is present.

Wiring Requirements

Details the electrical supply line requirements for the unit.

Placing Air Conditioner on Roof

Guidance on safely lifting and positioning the unit onto the caravan roof.

Installing the Air Conditioner Unit

Step-by-step guide for physically mounting the air conditioner.

Measuring Ceiling to Roof Thickness

Instructions on how to measure and prepare ducts based on roof thickness.

Connecting Power Supply

Instructions for connecting the unit to the power supply, emphasizing safety.

Air Distribution Box Installation

Steps for installing the air distribution box and associated components.

Operating Instructions

Controls Overview

Explanation of the selector switch and thermostat functions.

Cooling Operation

How to set the thermostat and fan speed for optimal cooling.

Fan Operation

Instructions for using the fan-only mode for air circulation.

Heating Operation

Guide for using the optional electric heater for supplemental heating.

Customer Maintenance

Regular maintenance tasks for the air conditioner, including filter cleaning.

Air Conditioner Wiring Diagram

Summary

Safety Instructions

Recognize Safety Information

Learn to identify the safety-alert symbol and its meaning for personal injury awareness.

Understand Signal Words

Understand the meaning of signal words like WARNING and CAUTION for risk assessment.

General Information

Air Conditioner Design and Application

Details the intended design and application of this air conditioner for caravans.

Factors Affecting Cooling Performance

Explains how caravan heat gain affects performance and preventative measures.

Condensation Management

Information on condensation formation and how to minimize it during operation.

Choosing Proper Location

Normal Location for Installation

Describes the standard placement for the air conditioner over a roof vent.

Alternative Locations for Installation

Recommends placement for single or dual unit installations when no roof vent is used.

Installation Instructions

Precautions

Critical safety warnings and general precautions before starting installation.

Location Selection Details

Check for obstructions, roof support, and internal obstructions for installation.

Roof Preparation

Steps for preparing the caravan roof for unit installation.

Creating a New Roof Opening

Instructions for marking and cutting a new opening if no existing vent is present.

Wiring Requirements

Details the electrical supply line requirements for the unit.

Placing Air Conditioner on Roof

Guidance on safely lifting and positioning the unit onto the caravan roof.

Installing the Air Conditioner Unit

Step-by-step guide for physically mounting the air conditioner.

Measuring Ceiling to Roof Thickness

Instructions on how to measure and prepare ducts based on roof thickness.

Connecting Power Supply

Instructions for connecting the unit to the power supply, emphasizing safety.

Air Distribution Box Installation

Steps for installing the air distribution box and associated components.

Operating Instructions

Controls Overview

Explanation of the selector switch and thermostat functions.

Cooling Operation

How to set the thermostat and fan speed for optimal cooling.

Fan Operation

Instructions for using the fan-only mode for air circulation.

Heating Operation

Guide for using the optional electric heater for supplemental heating.

Customer Maintenance

Regular maintenance tasks for the air conditioner, including filter cleaning.

Air Conditioner Wiring Diagram

This document is an installation and operating manual for a Dometic Roof-Top Air Conditioner, specifically the CARAVAN MODEL B3200, Type 3253.331.

Function Description:

The Dometic B3200 is a roof-top air conditioner designed for installation on caravans. Its primary function is to provide cooling and dehumidification, and with an optional electric heater, it can also offer supplemental heating. The unit is intended to maintain a desired indoor temperature, with its effectiveness dependent on the caravan's heat gain. It operates by circulating air within the caravan, removing moisture during normal operation, and providing either cool or warm air as selected by the user.

Important Technical Specifications:

Model Number: B3200
Type: 3253.331
Nominal Compressor Capacity (KW): 3.2 KW (for cooling)
Electric Heater Capacity (KW): 1.5 KW (optional)
Electrical Rating: 220-240 VAC, 50Hz, 1 Phase
Full Load Amps (Compressor/Motor): 5.2/0.8 A
Locked Rotor Amps (Comp/Motor): 24/5.0 A
Circuit Protection: 10 Amp Time Delay Fuse or Circuit Breaker
Input Power (KW): 1.35 KW (cooling), 1.64 KW (heating)
Minimum Wire Size: 1mm² Copper, up to 8 meters
Generator Size (Manufacturer Guidelines): 1 Unit - 3.5KW, 2 Units - 5.0KW. Note that generators lose power at high altitudes and from lack of maintenance, and total caravan power usage must be considered.
Unit Weight: Approximately 45 Kilograms
Roof Opening Dimensions: 362mm x 362mm (± 3.2mm)
Roof Thickness: Minimum 25mm, maximum 100mm (alternate installation methods for roofs over 100mm thick)
Roof Load Requirement: Designed to support 65 Kg when the caravan is in motion (normally a 100Kg static load design meets this).
Acceptable Roof Slant: 8° to either side is acceptable; front to back slant is NOT acceptable.
Torque Specification for Mounting Bolts: 4.5 to 5.5 NM (Newton Meters) to compress the roof gasket to approximately 13mm.

Usage Features:

Selector Switch: Offers eight positions including "OFF", controlling fan speed (HIGH FAN, MED FAN, LOW FAN), cooling modes (HIGH COOL, MED COOL, LOW COOL), and heating mode (OPT HEAT, if equipped).
Thermostat: Controls the compressor ON/OFF operation for cooling within a temperature range of 18.5°C to 32.5°C. The thermostat does not control the optional electric heater.
Cooling Operation: Users can select desired temperature and fan speed. The compressor and fan start simultaneously when cooling is called for. A 2-3 minute wait is recommended before restarting the unit after manual shutdown to allow refrigerant pressures to equalize. The blower runs continuously to circulate air and maintain an even temperature.
Fan Operation: Allows air circulation without cooling or heating, with selectable HIGH, MED, or LOW fan speeds.
Heating Operation (Optional): If equipped, the electric heater can be turned on to remove chill on cool days. The selector switch is used to activate "OPT HEAT". The thermostat does not control the heater's ON/OFF cycle. If the optional heater is not installed but selected, the fan will run as "LOW FAN".
Condensation Management: The air conditioner removes moisture from the air during normal operation. Keeping doors and windows closed minimizes condensed moisture on cold surfaces. The manufacturer is not responsible for damage caused by condensed moisture.
Heat Gain Reduction: Recommendations include parking in shaded areas, using window shades, keeping windows/doors shut, minimizing heat-producing appliances, and starting the air conditioner early. Accessories like outdoor patios and window awnings can also help.

Maintenance Features:

Return Air Filters: Periodically remove the filters located above the removable panels in the air box, wash them with soap and warm water, let them dry, and reinstall. It is important never to run the air conditioner without the return air filter in place to prevent evaporator coil plugging.
Air Box Housing and Control Panel: Clean with a soft cloth dampened with a mild detergent. Avoid furniture polish or scouring powders.
Blower Motor: Factory lubricated and requires no service under normal use.
Frost Prevention: If frost forms on the evaporator coil, inspect and clean the filter if dirty, ensure air louvers are not obstructed, and adjust the thermostat to a warmer setting. If frosting continues, operate on LOW, MED, or HIGH FAN only until the coil is clear of frost.
Troubleshooting: Before calling for service, check if the caravan's power source (motor generator or land line) is running and properly sized, and check fuses or circuit breakers.
Professional Service: The unit must be serviced by qualified personnel. Any damaged wiring or supply cord must be replaced by the manufacturer, its service agent, or a similarly qualified person.
Information for Service: When calling for service, provide the Air Conditioner Model and Serial Number (found on the rating plate on the base pan) and the Air Distribution Box Kit Part and Serial Number (found on the rating plate on the ceiling template, visible through the air box filter grill opening).