The Coleman Mach 15 is a versatile and energy-efficient under-bunk or cabinet air conditioning unit designed for use in recreational vehicles (RVs) and other compact living spaces. This guide is based on official installation instructions and technical documentation provided by the manufacturer and its partners. The focus is on the installation process for the KoolRV A/C Connect system, which is designed to enhance airflow and efficiency in the Coleman Mach 15 model. The instructions cover the removal of internal components, installation of the A/C Connect system, use of vent adapters, and sealing techniques to ensure optimal performance. The guide also includes warnings, maintenance recommendations, and considerations for safety and compliance.
Overview of the Coleman Mach 15 and KoolRV A/C Connect System
The Coleman Mach 15 is part of the 4661X Series of under-bunk and cabinet air conditioners. It operates on a 115 VAC power supply and requires 12 VDC for the thermostat. The unit is designed for installation in RVs and is intended to provide efficient cooling in confined spaces. The KoolRV A/C Connect system is an optional accessory that can be installed to improve airflow distribution and overall unit performance.
The installation process involves removing several internal components, including the filter cover, the “chute,” and the foam divider in the plenum. These components are not reinstalled after the KoolRV system is in place. The A/C Connect system includes vent adapters that are adjusted to the correct orientation and sealed using HVAC foil tape to prevent air leaks. The installation instructions emphasize the importance of using only the specified components and materials, and recommend that only qualified individuals perform the installation.
Step-by-Step Installation Process
The installation of the KoolRV A/C Connect system for the Coleman Mach 15 involves several key steps. These steps are detailed in the manufacturer's documentation and are intended to ensure a safe and effective installation.
Removing Internal Components
The first step in the installation process is to remove the filter covers and filters from the air conditioning unit. This is followed by the removal of four screws that hold the cover in place. Care must be taken to hold the cover during screw removal to prevent damage. Once the cover is removed, an odd-shaped cover known as a “chute” becomes visible. This component is also removed by locating and removing four screws that hold it in place. The “chute” is not reinstalled after removal.
Beneath the “chute” is the plenum, a large open area within the unit. The plenum is divided into two compartments by a foam divider. This divider is also removed and not reinstalled. The removal of the foam divider allows for greater airflow and better performance when the A/C Connect system is installed. The vent extender, which resembles a box and is located at the front duct opening, is also removed and not reinstalled.
Installing the A/C Connect System
After the internal components are removed, the A/C Connect system can be installed. The system is inserted into the square opening at the bottom of the Coleman Mach 15 unit. The fit is snug and should snap into place. The silicone seal on the adapter helps to lock the system in place and prevent rattling. The lip of the adapter should sit flush with the metal base of the unit to ensure a secure fit.
The two vent adapters that are included with the system are then inserted into the ventilation openings on either side of the plenum. These adapters are shipped with the system turned 90 degrees to minimize the risk of damage during shipping and to reduce packing space. The user must adjust the vent adapters to the correct orientation by holding them in place and pressing slightly toward the AC adapter to keep the ducting collapsed. The adapters are then turned in the desired direction. If the vent openings are too small or too large, adjustments may be necessary. Instructions for adapting the system to different configurations are available on the manufacturer’s website under the “My Vent Adapter Doesn’t Fit!” section.
Once the vent adapters are in place, HVAC foil tape is used to secure them and prevent air leaks. The tape is applied around the vent adapters to cover any excess opening in the plenum. This step is crucial for maintaining the efficiency of the system and ensuring that air is distributed properly.
Final Checks and Reassembly
After the A/C Connect system is installed, it is important to test the unit to ensure that there are no air leaks. The unit is turned on and the system is checked for cold air leaks. If any leaks are detected, they can be sealed using additional HVAC foil tape. Once the system is confirmed to be airtight, the A/C cover, filters, and filter covers can be reinstalled.
It is recommended that the removed “chute” and foam divider be stored in a safe place in case the A/C Connect system needs to be removed in the future. The Coleman Mach 15 will not function without either the A/C Connect system or the original components being in place.
Safety and Compliance Considerations
The installation and operation of the Coleman Mach 15 must be performed by qualified individuals who have the necessary training and experience. This is emphasized in the manufacturer’s documentation, which states that some states require installation and service personnel to be licensed. The use of only the specified components and materials is also strongly recommended to ensure the safety and proper functioning of the unit.
Before energizing the system, all personnel should be informed that the equipment is being powered on. The thermostat system switch should be placed into the “OFF” position, and all wiring connections should be verified by referring to the wiring diagram located on the back of the wiring box door. It is also recommended that the checkout instructions be thoroughly reviewed before beginning the procedure.
Operation and Maintenance Instructions
Once the Coleman Mach 15 is installed and operational, it is important to follow the manufacturer’s recommendations for operation and maintenance. The unit is designed to require minimal maintenance, but regular cleaning of the return air filter and condensate drain is necessary to ensure optimal performance. The return air filter can accumulate dust and dirt more quickly than in ceiling-mounted systems, so it is recommended that it be checked weekly.
Failure to clean or replace the filter at regular intervals can lead to a reduction in air volume and potential damage to the unit. The condensate drain should also be inspected and cleared as needed to prevent blockages. These maintenance tasks are essential for maintaining the efficiency and longevity of the unit.
Conclusion
The installation of the KoolRV A/C Connect system for the Coleman Mach 15 is a detailed process that involves the removal of internal components, installation of the new system, and sealing of the unit to prevent air leaks. The process requires careful attention to detail and adherence to the manufacturer’s instructions to ensure a safe and effective installation. The system is designed to improve airflow and efficiency, making it a valuable addition for users of the Coleman Mach 15. Regular maintenance, including filter cleaning and condensate drain inspection, is essential for keeping the unit in good working order. By following the recommended procedures and using only the specified components, users can ensure that their Coleman Mach 15 continues to provide reliable and efficient cooling performance.