Frequently Asked Questions
KFR51 / KFR50 - ¼ and ½ inch
KFR66 / KFR70 - 3/8 and 5/8 inch
KMS9918 - ¼ and 3/8 pipe for the 9000 BTU units; ¼ and ½ for 12000 BTU unit.
KMS121224 - ¼ and ½ pipe for 12000 BTU units; 3/8 and 5/8 for the 24000 BTU unit.
KFR66 / KFR70 - 7 metres
KMS9918 – 9000 BTU 5 metres / 18000 BTU 6 metres
KMS121224 – 12000 BTU 6 metres / 24000 BTU 7 metres
KFR32 – 15 metres
KFR51/KFR50 – 20 metres
KFR66/KFR70 – 25 metres
KMS9918 – 9000 BTU 12 metres / 18000 BTU 20 metres
KMS121224 – 12000 BTU 15 metres / 24000 BTU 25 metres
KFR51 / KFR50 – for each additional metre of pipe-work over 6 metres add 50g per metre.
KFR66 / KFR70 – for each additional metre of pipe-work over 7 metres add 60g per metre of gas.
KMS9918 – 9000 BTU for each additional metre of pipe-work over 5 metres add 40g per metre & 18000 BTU for each additional metre of pipe-work over 6 metres add 50g per metre of gas.
KMS121224 – 12000 BTU for each additional metre of pipe-work over 6 metres add 50g per metre of gas & 24000 BTU for each additional metre of pipe-work over 7 metres add 60g per metre of gas.
Signal wires are 0.75mm2 - 2 core flex.
KMS9918 require a standard 13 Amp supply / spur to each indoor unit
Plus a permanent 5 Amp supply to the outdoor unit
KMS121224 require a standard 13 Amp supply / spur to each 12000 indoor unit & a 20 Amp isolator with a C or D Motor Rated Trip
Plus a permanent 5 Amp supply to the outdoor unit.
KFR50 / KFR70 / KMS9918 / KMS121224 requires power to the indoor and outdoor unit see above for details.
KFR32 – 10.53p per hour
KFR51 – 16.36p per hour
KFR66 – 21.62p per hour
KFR50 – 18.94p per hour
KFR70 – 28.92p per hour
KYR35 – 13.99p per hour
THP06 – 10p per hour
THP09 – 14p per hour
THP12 – 18p per hour
None of Wall Mounted air conditioning units will automatically restart.
Swimming Pool Heaters will automatically restart.
Ceiling Cassettes & Mobiles have a range of 18 degrees to 30 degrees.
Ceiling Cassettes come with an indoor and outdoor unit, pre-insulated copper pipe-work to connect the units, electrical interconnecting cables, ceiling trim panel for the indoor unit, ceiling fixings (subject to ceiling void height) and a remote control, plus manuals.
Mobile Air Conditioner comes with an exhaust hose, window fitting kit for exhaust hose, water outlet pipe and a remote control, plus manuals.
However there are two exceptions to this rule, they are ‘DF’ or ‘E3’ (dependant on system model), both these codes mean that the unit is running through it’s defrost procedure and normal operation will resume within approx 30mins. This normally only happens during the colder months. If your system does not resume operation please contact us.
A Mini Lime Pump like the Orange Pump is used to take the condensation water from the drip tray; however it is fitted in plastic conduit (trunking) to the side of the indoor unit rather than fitted into the drip tray. You can use this conduit to hide your refrigerant pipes and cables as well. It can also take that water up to maximum height of 8 metres.
What size hole do I need to make for the pipe-work to go through the wall?
You will need a 65mm approx. hole through the wall.What bore size are the pipes for each system?
KFR32 - 1/4 and 3/8 inchKFR51 / KFR50 - ¼ and ½ inch
KFR66 / KFR70 - 3/8 and 5/8 inch
KMS9918 - ¼ and 3/8 pipe for the 9000 BTU units; ¼ and ½ for 12000 BTU unit.
KMS121224 - ¼ and ½ pipe for 12000 BTU units; 3/8 and 5/8 for the 24000 BTU unit.
What pipe length are the units pre-gassed to?
KFR32 / KFR51 /KFR50 - 6 metresKFR66 / KFR70 - 7 metres
KMS9918 – 9000 BTU 5 metres / 18000 BTU 6 metres
KMS121224 – 12000 BTU 6 metres / 24000 BTU 7 metres
What is the maximum pipe run I could have between the units?
For each 1 Metre of vertical pipe-run, reduce overall length by 1.5MKFR32 – 15 metres
KFR51/KFR50 – 20 metres
KFR66/KFR70 – 25 metres
KMS9918 – 9000 BTU 12 metres / 18000 BTU 20 metres
KMS121224 – 12000 BTU 15 metres / 24000 BTU 25 metres
How much extra gas should be added for each additional metre of pipe-work?
KFR32 - for each additional metre of pipe-work over 6 metres add 40g per metre.KFR51 / KFR50 – for each additional metre of pipe-work over 6 metres add 50g per metre.
KFR66 / KFR70 – for each additional metre of pipe-work over 7 metres add 60g per metre of gas.
KMS9918 – 9000 BTU for each additional metre of pipe-work over 5 metres add 40g per metre & 18000 BTU for each additional metre of pipe-work over 6 metres add 50g per metre of gas.
KMS121224 – 12000 BTU for each additional metre of pipe-work over 6 metres add 50g per metre of gas & 24000 BTU for each additional metre of pipe-work over 7 metres add 60g per metre of gas.
What type of electrical cable is used?
All systems use 2.5mm2 - 3 core flex for power supply / interconnections.Signal wires are 0.75mm2 - 2 core flex.
What power do the units require?
KFR32 / KFR51 / KFR50 require a standard 13 Amp supply / KFR66 / KFR 70 requires a 20 Amp isolator with a C or D Motor Rated TripKMS9918 require a standard 13 Amp supply / spur to each indoor unit
Plus a permanent 5 Amp supply to the outdoor unit
KMS121224 require a standard 13 Amp supply / spur to each 12000 indoor unit & a 20 Amp isolator with a C or D Motor Rated Trip
Plus a permanent 5 Amp supply to the outdoor unit.
Which unit does the power go to?
KFR32 / KFR51 / KFR66 requires power to the indoor unit onlyKFR50 / KFR70 / KMS9918 / KMS121224 requires power to the indoor and outdoor unit see above for details.
What is the running cost of the units?
Based on an average cost of electricity @ 10p per kilowatt hour:KFR32 – 10.53p per hour
KFR51 – 16.36p per hour
KFR66 – 21.62p per hour
KFR50 – 18.94p per hour
KFR70 – 28.92p per hour
KYR35 – 13.99p per hour
THP06 – 10p per hour
THP09 – 14p per hour
THP12 – 18p per hour
Will the system automatically restart after a power cut?
Ceiling Cassette Systems will automatically restart.None of Wall Mounted air conditioning units will automatically restart.
Swimming Pool Heaters will automatically restart.
What is the temperature range of the air conditioning units?
Wall split units have a range of 16 degrees to 31 degreesCeiling Cassettes & Mobiles have a range of 18 degrees to 30 degrees.
What is included with our air conditioning systems?
Wall split and multi-split units come with an indoor and outdoor unit, pre-insulated copper pipe-work to connect the units, electrical interconnecting cables, a wall mounting bracket for the indoor unit and remote control with a wall holster, plus manuals.Ceiling Cassettes come with an indoor and outdoor unit, pre-insulated copper pipe-work to connect the units, electrical interconnecting cables, ceiling trim panel for the indoor unit, ceiling fixings (subject to ceiling void height) and a remote control, plus manuals.
Mobile Air Conditioner comes with an exhaust hose, window fitting kit for exhaust hose, water outlet pipe and a remote control, plus manuals.
Can the outdoor unit go in a loft, garage or warehouse?
These are not ideal locations to mount the outdoor unit as it requires fresh air to flow through the matrix to aid operation and cooling in summer. There would also be the need to install an adequate condensation drain from the unit for water removal when the unit is run in heating mode. As a guide if you have a warehouse of a minimum 2000 approx SqFt with high eaves, then this would be acceptable for the outdoor unit, but more units would need a larger warehouse, approx extra 1000 SqFt per unit. The warehouse temperature would also need to be fairly cool, as most are. But it would not be suitable in a hot manufacturing area for example.Is the outdoor unit weatherproof?
Yes, the outer casing is made from painted steel and will withstand general rainfall and sunlight. However we would recommend as part of the general maintenance of the whole system that it is periodically treated for rust and anti-corrosion. If you are in an area where the air has a higher salt content then we suggest that a higher level of maintenance is carried out to increase the life of the casing.Does the outdoor unit need a cover / shade?
No not necessarily, however a cover can protect it from harsh weather conditions enabling it to be treated for rust and anti-corrosion less often, and will also provide shade in the summer. But, full airflow to the front and back must be available. The front must have at least 60cm clear and the back 10cm.Can I build a cover / canopy?
Yes providing it is not blocking any airflow to the unit. A ‘picket fence’ type of surround, i.e planked with very open gaps, with a roof would be acceptable. The front must have at least 60cm clear and the back 10cm, or the ‘planks’ must give at least 50% air flow between them.Can I mount a wall split unit on a dwarf wall?
The lower down the wall you mount the indoor unit the more efficiency you will lose when cooling. This is due to the location of the louvers along the bottom of the inside unit as it’s designed to mount high on the wall and blow down into the room. However, many customers have done this with good results, keep louvers fixed horizontally and do not block the flow into the room. As a rule you will lose about 15% efficiency. In winter it actually works very well as heat rises!How does the timer function work?
The timer function works on a day to day basis. The settings are stored in the remote control unit and sent to the indoor unit through infrared signalling. You just initialise the timer each day by pointing the remote at the indoor unit and pressing the timer function.What type of maintenance do the systems require and how often?
The inside unit will require the filters to be checked and possibly removed, cleaned and refitted at least once a quarter depending on how dusty the environment is. Contact us for help on removing and refitting the filters if you are unsure.If an error code appears in the display what should I do?
If any error code beginning with ‘E’ appears in the display then immediately switch off the unit and telephone us on 0870 3344556 for technical support. DO NOT USE the equipment again until you are told to do so by our engineers otherwise permanent damage may occur.However there are two exceptions to this rule, they are ‘DF’ or ‘E3’ (dependant on system model), both these codes mean that the unit is running through it’s defrost procedure and normal operation will resume within approx 30mins. This normally only happens during the colder months. If your system does not resume operation please contact us.
What is the purpose of a mini orange / mini lime pump?
A Pump must be used when it is not possible to use gravity to take the condensation water away from the drip tray in the indoor unit to the outside of the premises. The pump is placed inside the drip tray or above the ceiling and will pump the water up to a maximum height of 8 metres, then out of the building.A Mini Lime Pump like the Orange Pump is used to take the condensation water from the drip tray; however it is fitted in plastic conduit (trunking) to the side of the indoor unit rather than fitted into the drip tray. You can use this conduit to hide your refrigerant pipes and cables as well. It can also take that water up to maximum height of 8 metres.
What is the maximum water lift height for the internal ceiling cassette condensate pumps?
80cm from the bottom of the unit is the maximum water lift height, then the pipe will need to use gravity to drain the water out of the building.The FAQ section will be added to periodically so please check back to see if more information is available each time you have a question.
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