Self Contained Air Conditioner Set Free (VRF Systems) Hitachi Products For Business Set Free (VRF Systems) FSNMQ ( Set-Free Front Flow Type ) Product Demo Video Support I have one Hitachi i-clean split AC 2ton unit installed in my home. I want to connect another indoor ductless unit to the already installed outdoor compressor. I only need to use one indoor unit at a time. How do I connect two indoor units to a single compressor - is this possible? If his house is relatively new and well insulated and not too enormous (1500 SF or less) and not in a very hot area, two tons is probably enough for the whole house most of the time. I've got 2.25 tons downstairs and 2.5 tons upstairs in a 3200 SF house and it's always been more than enough so 2 tons for 1500 SF or less is probably fine even if you run both evaporators at once. However, I would want to be sure that you could switch off one of the two evaporators because that seems essential to his planned usage.

It could be for energy savings or just because he already knows 2 tons isn't enough for the entire house, he doesn't say. The actual question of connecting two evaporators to one condensor is quite easy, you just need to add a T to the freon supply and a T to the freon return. But how will the compressor be told to turn on? You don't want the room with the evaporator you are not using to run the compressor. And how do you stop freon from going to the evaporator you are not using?stand alone ac unit walmart The outdoor unit needs to have a control board that allows for more than on indoor unit to hook to. haier air conditioner parts ukAt minimal you would need to changed the board unless it already has it in it, which is not common. car ac repair folsom ca

Then the system must have separate valves for each indoor unit so to prevent refrigerant flowing to the unit not being used.If you really do use only 1 at a time, this piping (tee it in where possible) will work. Only 1 terminal will work at a time and the condenser will only see 1 indoor coil (the load). If you use more than 1 terminal at a time, then it depends if the outdoor unit (outdoor compressor) can meet the demand (indoor coils). A 2-ton outdoor unit will give you a little more than 2-tons when more than 1 terminal unit is operating but there is a limit. Each manufacturer can be different regarding how to wire in the additional thermostat. Check with a rep to find out the exact Tstat wiring (i.e., the inclusion of another indoor unit) and Tstat programming. It can but you must modify the circuit to protect from operating both of them at same time by the following: You need to install two T connections at the IN/OUT of compressor. Modify the compressor protection by adding relive valve to bypass the pressure upon increasing pressure.

Use two solenoid valves each one at the O/P T tube which will feed the Indoor unit. Solenoid valves will be feed power from O/P terminal in indoor unite which assigned to feed out door unit and add relay protection to prevent both solenoid open. Remember if you are feeding the the two indoor unit from different power source so you must install relay or contractor which will feed the Compressor from independent power source or direct.Browse other questions tagged hvac or ask your own question.Hitachi Split air conditioners are one of most selling split air conditioners for premium range customers. Hitachi is one of the leading manufacturer in air conditioners and it has a major production plant setup at Kadi, Gujrat which is among top-1o manufacturing plants of them worldwide. Split air conditioners by Hitachi are one of the best looking AC’s in Indian markets. Hitachi offer split air conditioner’s in almost every range of budget they can for consumers. There premium range air conditioners are costliest in Indian markets giving a strong competition to O’General split air conditioner’s market share.

And they offer lower range air conditioner as well like KAZE series for those who can’t afford to buy a premium range product. However there are some difference of features in different range of AC’s they offer. It’s like, the more you shell out money, more features you get. However most required features are available in lower priced range as well. These air conditioner have an image in market, Buy Once and Forget It. However get the air conditioner timely serviced and enjoy its cooling for decades. When it comes to cooling, they have got no match. To give a strong competition to brand like O’General, they have ensured to offer their customer features like Super Cool which gives instant cooling on demand. These AC’s starts at high RPM to quickly reach the desired temperature and with lower power consumption as well. Also its Direct Efficient Technology adjusts the compressor speed and refrigerant flow to maintain the desired temperature, this is the same technology which LG is offering with branding of INVERTER V.

Also it has a inbuilt feature of Auto Fan speed which adjusts the speed of fan, e.g if the compressor is cut off after reaching desired temperature, fan speed also comes down to a lower level and vice versa. However there is also an option to adjust fan speed as well to suit your comfort level as well. And its 4-way Air-Distribution cools a bigger area in lesser time by adjusting the movement of horizontal and vertical louvers. Also upto my knowledge, only Hitachi offers to run air conditioner in a temperature range of 16 deg to 32 deg C. Talking of build quality, the product quality is fantastic. It is indeed very impressive, however not to forget, one is paying a premium cost for it too as well. Its outer body has a great finish and the copper tubing which is connected with outdoor unit, is also of copper inside air conditioner. We mentioned this point of copper tubing because we heard that some manufacturer keep Aluminium tubing inside air conditioner and keeps it of copper on outside part for showing it to customers.

However this is not wrong, this is just done for doing cost cutting and to lower down the prices. This doesn’t make any negative effect on air conditioner capability. Hitachi offers best looks in air conditioners market, however Samsung, LG & even Panasonic even came up with some good looking split air conditioner’s are well. And these companies are giving good competition to Hitachi when it comes to look. Personally i like looks more of Samsung & Panasonic. However looks i am talking about here is of iClean or iTec. KAZE has got some standard looks but they are not bad at all. However looks is something which one should not give much priority and should focus more on quality, performance and long life which is Hitachi AC is capable of. To lower down power consumption at a drastic rate, there premium ranged models have Twin Rotary Compressor which features a “Permanent Magnet Motor” to magnetize it without electricity, as a result it becomes 10% more power efficient  than other conventional AC compressors.

Its inbuilt Tropical Inverter Compressor can withstand temperature upto 52 deg C. It has a inbuilt Power Active Module inverter system which suppresses electrical distortion to minimize power losses. This inverter works in combination of PWM (Pulse Width Modulation) & PAM (Pulse Amplitude Modulation) which helps in minimizing the phase gap & draws more effective power. This technology is patented by Hitachi. We have prepared a special comparison table which would show you the major difference of features between every model of Hitachi split air conditioner’s. This is one of the most advertised features by Hitachi (even in TV commercial’s). The unique thing about this feature is that it automatically removes the dust accumulated on the AC filter. Its working is pretty simple, when filter clean function gets command from controller, its inbuilt cleaning unit makes one cycle from its home position to dust collector box position to sweep the dust by the brush fitted on micromesh Stainless Steel Plated filter.

And then, dust collector collects and move the dust to dust collector box. Auto Cleaning has got many advantages: Also, do read its manual for more detail how the cleaning happens and in how much time intervals. You’ll really come to know about many interesting facts about it. This is an intelligent feature which will help you getting a more comfortable room environment by reducing level of humidity as well with room temperature. This feature is not a simple On/Off timer feature but the unique thing about this feature is when you set a particular time e.g. suppose you want your room to be cooled down at 9pm. So the air conditioner will scan the room condition an hour before and will start by himself and will run till the room reaches the desired temperature required by user. As i described about this in Hitachi window AC review as well that this air conditioner is smart enough to find himself in which city it is installed, the time and the metabolic needs e.g. hot, very hot & humid (to be chosen by you).

And it has inbuilt data fed into it already of above 100 cities of their temperature and humidity. Based on these factors, AC automatically changes the settings of himself from time to time to maintain a proper climate inside room. This filter helps preventing bacterial growth inside the air conditioner. In this mode, air circulation speed & set temperature changes automatically and run continuously for 30 minutes to cool down the room quickly. You can lock down your AC digitally to prevent misuse of it from children or any stranger whom you want that he/she should not be able to use it. This feature ensures uniform air-distribution (throughout the room) by movement of louvers in horizontal and vertical direction. This feature allows Vertical louvers to set at opposite direction to divert air-flow in opposites sides of room. This unique feature adjusts the temperature automatically at night by increasing it 1 deg C for up to 4 hours and you’ll not feel chilled in the middle of the night.

It prevents the air conditioner from rusting and corrosion and ensures a long life of the product. This feature keep an eye on working of compressor i.e. when the compressor is cut off, it automatically slows down the movement of fan speed too and vice versa to save power. This feature will automatically keep the air conditioner at 25 deg C with suitable fan speed and will maintain it as much as you want. Filter Clean Indicator LED light up when the filter needs to be cleaned in the indoor unit. This air conditioner comes with preset selectable fan speeds which you can choose as per your comfort level you require. This feature resumes the working of air conditioner on same settings automatically after a power failure. When activated, this feature will slow down the fan speed as required to low down level of moisture inside room. This features prevents frosting of indoor unit and ensures optimum working of air conditioner for longer periods. This stick draws the airborne particles like dust, pollen, mite, germs etc to ensure providing clean air.

This feature is about air flow mechanism which enables spiral air flow, creating a “whorl” effect, ensuring there are no hot air pockets inside room. This filter deodorizes the air and eliminate even the tiniest sized bacteria to make the air free from odor and bacteria. From all the reviews we aggregated for Hitachi, they were just above average. People living in metro cities and using this product are however satisfied with it, but if you live in a remote area, not in any metro city, you’ll find after sales service as average only. Hitachi has made such wonderful products, but they are not at all socially active too among consumers. Hitachi really needs to pump up his image as a more trustable brand among consumers mind like LG & Samsung do. Please note that you may can get a good difference of prices mentioned above in list and the price you get from authorized dealer. It is always best to check your nearby authorized dealer for best prices & to buy this air conditioner.