RAC (Room Air Conditioning) is a comprehensive range of domestic and light commercial split systems. This includes the Summit standard wall mounts (A/A rated up to 7kW), the elegant Shirokuma premium wall and floor mounts, the award winning S-Series (with SCOP's up to 4.7 SEER's up to 8.5) and the flexible MonoMultizone single and multi split series which are compatible with wall, floor, cassette and ducted indoor unit types. The RAC range can be fully integrated into the central control systems and BMS interfaces of the Utopia and Set Free ranges. Domestic Heating systems are air-to-water heat pumps available as either a Yutaki monobloc (Yutaki M) or Yutaki split system type(Yutaki S & Yutampo). Air source heat pumps provide an economical and environmentally friendly alternative to traditional heating systems. By taking advantage of thermodynamics processes, heat pumps provide more heat output then the energy input. Hitachi Yutaki M range for instance, has a full load COP of up to 4.31, where 1kW of electrical energy is used to provide up to 4.31kW of heating output.

Hitachi offers a wide variety of control systems giving customers the flexibility to control their air conditioning system to suit their requirements. The H-Link communications system, which is common across all System Free Utopia and Set Free products, provides a single and comprehensive range of local, central and BMS gateway controller options. Even RAC products benefit, with a H-Link interface module now available. Utopia are high specification single and multi split systems. This range includes the compact ES, IVX Comfort & IVX Premium and the RASC centrifugal ducted types. The unique IVX systems incorporate VRF (Variable Refrigerant Flow) control on up to 8 indoor units, making them the market leader in terms of flexibility, user comfort and energy efficiency. The RASC centrifugal ducted units are outdoor units specifically designed to be installed internally, to allow an invisible air conditioning installation. All Utopia systems are compatible with System Free indoor units, with 12 indoor unit types and 15 capacities available.

Our Set Free range is VRF (Variable Refrigerant Flow) systems and includes the Mini 2 Pipe,  Side Flow 2 Pipe and the Modular Standard & High Efficiency 2 Pipe Heat Pump & 3 Pipe Heat Recovery. Each system allows a mixed combination of system free indoor units, including 12 indoor unit types, each of up to 15 capacities. The Set Free range incorporates a number of features unique to Hitachi, such as the Side FLow FSNM wall mountable outdoor units (up to 37.5kW), the space saving monobloc design (up to 150kW capacity), and cold draft off coil temperature control across our entire range. harga indoor unit acThe Hitachi Set Free systems offer high efficiency (COP's of up to 4.80) and excellent reliability.cost of 21 seer ac unit Ventilation is a range of products well known for being the lowest height on the market (capacity of 2000m3/h from a unit that's less than 650mm high). difference between air handling unit and hvac

This includes the KPI-Energy recovery using Celluloid heat exchanger to transfer temperature and humidity, the KPI-Heat recovery using aluminium to transfer temperature only. By using KPI-active, you are able to reduce your heating/cooling loads when used in conjunction with VRF or Split systems. The Econofresh kit is easy to install, it provide up to 100% fresh air and has the ability to provide 'free cooling' when the outdoor temperature is below the indoor setting temperature. Samurai Chillers offer world-renowned reliability thanks to Hitachi's own twin screw compressors. Samurai are commercial and industrial chilled water systems, including cooling only and heat pump air-to-water, water-to-water and condenserless types. The Samurai are based upon Hitachi's peerless twin screw compressors, which are industry renowned for their efficiency and reliability. A slide valve provides continuous capacity control from 15 - 100% at high part load efficiency, while maintaining impeccable low vibration, low noise levels and a high power factor.

Samurai chillers include many high specification features as standard, such as acrylic coated condenser coils and star delta compressor motors. C water leaving temperature control is possible, with water leaving temperature controlled from -10??C on cooling capacities from 106 kW to 1280 kW. If you have upgraded your computer to Windows 10 or to Windows 8 and the drive was working before, but is no longer working correctly, you can save time by starting with Clearing the upper and lower registry filters to remove the upper and lower control filters from the registry. Step 1: See if the drive appears in BIOS On a notebook computer Figure : Example of CD/DVD drive listing in notebook BIOS On a desktop computer Figure : Example of CD/DVD drive listing in desktop BIOS If there is no CD/DVD drive listed in BIOS, the problem is probably hardware-related. If you are using a desktop computer, continue to Check the drive cable connections. If you are using a notebook computer, go to HP Customer Support -Contact for further assistance.

Step 2: Checking the drive name in Device Manager Figure : Device Manager: DVD/CD-ROM drives If is not in the list, skip to Resetting the computer power. Figure : Uninstall DVD/CD-ROM drive in Device Manager Figure : Scan for hardware changes If the CD/DVD drive name is missing, the drive is not being detected by Windows. Scan for hardware changes again to attempt to detect the drive. If the drive is still not detected, close Device Manager and skip to Resetting the computer power to reset power and reseat the drive cables if necessary. If a drive name is shown with an alert icon (the drive icon is marked with an alert symbol ), double-click the drive name to find more information. Do the following depending on what is shown in the Device Status section: If error code 10, 19, 31, 32, 39 or 41 is shown in Device Status, a problem exists with the integration of previous CD burning software. Use Clearing the upper and lower registry filters to remove associated control filters from the registry.

If a drive name is shown with a disabled icon (the drive icon is marked with an arrow pointing down ), the drive has been disabled. Right-click the drive name and select . You may have to restart the computer. The drive should work correctly once it has been enabled. To reset the BIOS on a notebook computer, press to Setup Defaults, press , then press again to Save and Exit. To reset the BIOS on a desktop computer, use the arrow keys to navigate to the tab, select , press , then press again to confirm. If the CD/DVD drive is listed as normal, with no special icons , Windows is detecting the drive but other software used to burn discs may not be detecting the drive. Use the steps in Software for burning discs does not recognize the drive to make the disc burning software detect the drive. Step 3: Use the Hardware and Devices troubleshooter Figure : Find and fix problems in Control Panel Figure : Configure a device Step 4: Resetting the computer power

Step 5: Checking drive cable connections (desktop tower computers only) If you are using a desktop computer, perform the steps in this section to check the CD/DVD drive cabling. If you are using a notebook computer, skip to Clearing the upper and lower registry filters. Figure : Removing the side panel Figure : Power cable and data cable Figure : Replacing the side panel Figure : Example of CD/DVD drive listing in BIOS If Windows does not recognize the drive, repeat Step 2 to see if the drive name appears in Device Manager and troubleshoot disc burning software if needed. drive name still does not appear If you suspect that the drive may be bad after using these steps, test the drive to see if the hardware has failed. For more information about testing for CD/DVD drive hardware failures, refer to one of the following HP support documents: Desktop PCs: Testing for Hardware Failures (Windows 10, 8) (in English) Notebook PCs: Testing for Hardware Failures (Windows 10, 8) (in English)