[[pageindex]]
Self install is available on cooling only and heat pump types with a max 5 mtr seperation between indoor and outdoor and are under 3.5 kw. You can now hire our vacuum pump to evacuate the air from the lines and indoor unit, this is optional and will cost £50, only available on purchase of equipment. Hire our vacuum pump with your system. Now with Flaring Tool and Tube Cutters, Complete with instructions.

Self Install Information

The Cheapest Split Type Units for Self Install

• Millenniumair KFR26GW/BP Inverter - £468.83
• Millenniumair KFR34GW/BP Inverter - £527.58

Hire our vacuum pump with your system. Now with Flaring Tool and Tube Cutters, Complete with instructions.

Vacuum Pump Instructions (pdf)

Self Install Air Conditioning Instructions (pdf)

Buy the 15 Minute Video £4.99p inc VAT & Postage.

What is Air Conditioning? What is a heat pump?

Open the calculator window for a cooling-heating load check

Tips/Guides

Air Throw and Air Flow What Does This Mean ?
When selecting an air conditioner it is important to consider both the amount of air moved by the unit and also the air distribution pattern.

If the amount of air moved by the unit is too small for the room then the unit will not be able to react quickly and we will get complaints that the unit is undersized. If it is too large then the unit will be subject to short cycling (rapidly switching on and off) and occupants will complain of uncomfortable drafts.

In general, a comfortable environment will be obtained if the unit installed gives between 8 and 14 air circulations per hour. You would not, normally, select any system that gives less than 6, or more than 20 air circulations per hour.

To work out the air circulations per hour you should take the air volume moved by the air conditioner and divide this by the room volume. For instance if you have a unit moving 1000m3/hr fitted in a 100m3 room then this will give 1000/100 or 10 air circulations per hour, which should be perfectly acceptable.

In addition you should take into account the air throw from the unit which is the furthest distance from the unit outlet grille that you will feel air movement. This assumes the unit is on high speed and the louvers are set fully forward for maximum throw. If there is no air movement in an area this can lead to hot or cold spots.

Recommended Spacing for Outdoor Unit

Wall Mounted Air Conditioning Installation Sketch (pdf)

Tools Required for Self Installation (pdf)

Latent Heat? Sensible Heat? Understanding Unit Capacities

Pipe Separation Between Indoor and Outdoor Units

Trouble Shooting Guide

Indoor Unit

• Is it level? have we adequate drainage?
• Smells are always due to site conditions or drains
• When were the filters cleaned?
• Is the unit too large/small
• Is the air short cycling?

Pipework

• Pipe sizes and lengths should be as the relevent technical guide
• Both Lines should be insulated
• In cooling both pipes should be between 0 and 8 deg C
• In heating both pipes should be between 30 and 60 deg C
• Look for restrictions, kinks etc.

Outdoor Unit

• Discharge temperature should be between 50 and 70 deg C
• Suction temperature should be between-3 and 4 deg C
• Frost on expansion line - system undercharged
• Suction line should be sweating not freezing in cooling mode
• Check for resrictions, paper bags etc sucked into condenser

Testimonials/Quick Views

Self Install Photographs from Mark Grant, thanks Mark!

View self install report with images by Julian Round from Yateley (pdf 337kb)

View self install report with images by Don Wiggins of Decking Engineering (pdf 770kb)