Mini splits are an efficient way to heat and cool several rooms. Because they don’t need ducts, they can be easily installed in multiple indoor zones, only requiring a small hole to connect the indoor units with the outdoor unit.
Like most air conditioning systems, where you install your mini split is critical. Even if they don’t need ductwork, where you put your mini split will likely be its permanent home, especially for models like wall mounted and ceiling cassette units. Before installing your mini split in its permanent location, there are several factors you need to consider.
You are watching: Mini Split Placement: Where Should You Install Your Mini Split?
In this article, we discuss how to determine the placement of your indoor and outdoor units, and the optimum distances and locations.
Select a location that’s solid enough to support the unit’s weight. This will also help prevent vibration, which can make the unit excessively noisy. Placing the unit at a decent height (at least 7 feet off the ground for wall mounted units) allows for good airflow and convenient drainage. You’ll also want to take sound into consideration, as installing the indoor unit too low can be disruptive.
Avoid installing the unit in a location that receives direct sunlight, and make sure to install the unit away from any doors. Every mini split has its own clearance requirements. Some can be mounted almost flush with the ceiling while others need to be mounted a foot or more down. Be sure to check your installation manual and look for an image like the one below to make sure your unit is installed for optimal performance.
Choose a location that’s at least three feet from all objects, especially electrical devices such as TVs and computers. Do not install the unit near flammable objects or heat sources.
Make sure you install the indoor unit at a height that will allow easy access to the filter and louver.
You may not be too keen on having your mini split be the focal point of the room. In that case, choose a location that’s as inconspicuous as possible. Installing the unit at a proper height will make it less noticeable than if you were to install it at a lower height.
With the indoor units out of the way, it’s time to place the outdoor unit.
To begin, the best location for a mini split condenser is one that can support its considerable weight. Condenser units can weigh anywhere from 80 to 250 pounds, and soft ground may cause the unit to shift, resulting in issues with the connections.
For the most secure placement possible, pour a concrete pad on the ground and mount the unit with anchor bolts. If you do not have the ability to mount the unit to concrete, a great alternative is to use a pre-engineered condenser pad. These pads are designed to support the weight of a unit when placed on solid ground. Always make sure to level your pad prior to securing the unit to it.
Airflow is the key to your mini split’s performance. When looking for a place to install your mini split, you should choose an area that offers optimum inlet and outlet airflow and is easily accessible for inspection, maintenance, and service.
Do not install your unit where it will be exposed to heat or steam from sources like boiler stacks, chimneys, steam relief ports, other air conditioning units, kitchen vents, plumbing vents, etc. Such extreme temperatures may degrade performance or cause damage to the unit.
When using multiple outdoor units, avoid placing them where discharge of one outdoor unit will blow into the inlet side of an adjacent unit.
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Appropriate airflow through the outdoor unit coil is critical for proper operation. Clearances ensure that heat radiation and discharge airflow aren’t restricted around the outdoor unit. The exact dimensions will depend on your specific unit, but in general it is best to keep any objects 28 inches from the front air outlet, 12 inches from the rear air inlet, 40 inches from the top, and 12 to 24 inches from either side. The diagram on the right shows the basic configuration.
*Pro Tip: If only the minimum amount of clearance is used, the unit performance can decrease by up to 15%. Never use less than the minimum clearance. Excess heat buildup or poor airflow can cause the unit to fail.
Wall Mounting
Outdoor units follow the same guidelines as central air condenser units when it comes to mounting. Avoid obstructions like shrubs, posts and other objects that can impede airflow.
Featured outdoor wall mount:
Quick Sling QSWB2000 Wall Bracket
Many wall mounts do not allow for enough air flow behind the unit. This mini split condenser wall bracket provides 25” of shelf space, allowing plenty of space between the wall and the outdoor unit. It can support units up to 350 lbs and features six points of anti-vibration isolation.
Windy conditions can interfere with your unit in several ways. From knocking the unit over to disrupting the condenser fan, you want to make sure that wind gusts do not have a negative impact on your mini split.
Wall and rooftop installations are most susceptible to wind issues; therefore, any unit installed on a wall or roof must be secured using the unit’s mounting points.
Ground installations are not without risk of wind issues, either. If you live in a high wind area like a coastal location, a wind barrier may be necessary in order to achieve the best performance.
The wind barrier needs to be constructed of a strong material like concrete in order to effectively obstruct the wind. The height and width of the barrier should be large enough to fully shield the unit. It should be at least 50% wider and taller than the dimensions of the outdoor unit. The unit must be placed at least 28 inches away from the wall to allow for proper air flow around it.
*Pro Tip: Anti-vibration dampers are critical in high wind areas. These are often included with wall brackets and stands, but they may be added if you’re ground mounting. Dampers will not only prevent the unit from audibly shaking but will also help to keep it secure and level.
Rain itself will not have a major impact on the performance of the unit. However, the unit should never be placed in an area where there is standing water. If your location is prone to flood, consider a mini split stand, wall mounting, or roof mounting. The outdoor unit is water resistant, not waterproof. If you are in an area with a lot of rainfall, it may be wise to install hoods over the unit’s air inlet and outlet. A roof or covering may also be used, but it must be at least 40 inches above the unit.
As heat pump performance has improved, so too has the usage of mini split units as primary heat sources. If you plan on using your heat pump as a primary heat source, you must make sure that your unit is clear of snow. Keep the following in mind if you’re concerned about snow’s effects on your mini split:
In very snowy areas, a hood or roof may be advisable. This surface must be at least 40 inches above the top of the unit, and it should be wide enough to fully protect your mini split. It is also important to install the outdoor unit air inlet and discharge areas away from prevailing winter winds. Always be sure to seal all piping and electrical access panels to prevent any moisture from getting inside.
Recommended mini split condenser stands:
Quick Sling QSMS1201 12″ Mini Split Condenser Stand
This condenser stand provides a sturdy, solid system to elevate your mini split outdoor condenser off the ground. It supports condensers up to 400 lbs and features four points of anti-vibration isolation.
The mounting stand is pre-slotted to allow for quick installation. Each foot is ready to receive 1/4″/20 hardware to bolt into concrete, cement, plastic pad or wood. It has a ground clearance of 12″, allowing plenty of space beneath the unit. All hardware is included.
Quick Sling QSMS1801 18″ Mini Split Condenser Stand
For larger outdoor units that require more space, we recommend this stand that provides 18” of ground clearance. It can support condensers up to 400 lbs and features four points of anti-vibration isolation.
The stand is made of 14 gauge square steel tubing for durability and comes with 50 derometer pads on each foot. The footprint can be adjusted from 34″ to 40″ wide in 1″ increments, while the height can be adjusted up to 1.25″.
All refrigerant piping — including connections, service valves, and elbows — should be completely and correctly insulated with closed cell pipe insulation. To prevent heat loss or heat gain through the refrigerant piping, all refrigerant piping including liquid and vapor lines should be insulated separately.
Keep the following insulation tips in mind when installing your mini split system:
*Pro Tip: All pipe insulation exposed to outdoor elements should be properly protected with PVC, aluminum vapor barrier, conduit or wide vinyl tape, or alternatively placed in a weather-resistant enclosure such as a pipe rack with a top cover. This will protect the insulation from drying out and cracking over time.
Source: https://gardencourte.com
Categories: Outdoor
This post was last modified on 19/10/2023 15:35
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