VRV ( Inquiry about Ventilation and Humidification)
VRV ( Inquiry about Ventilation and Humidification)
(OP)
I hope someone help me with (vrv xpress) prgramme after i design the indoor units and outdoor units (using this programmee) i also need to ventilate the building so i used a VKM device for Ventilation and Humidification and i got an erro message that is tell me "the room temprature cannot be controlled by a VKM device" and i tried many changes in the temprature of the indoor unit and outdoor unit but the message does'nt disappear !!!!!
Thank you for your quick reply in this matter .
Thank you for your quick reply in this matter .





RE: VRV ( Inquiry about Ventilation and Humidification)
although i don't know the specifics of that software, I seriously hope you use a commercial software (Trace, HAP) for the actual load calculation???
RE: VRV ( Inquiry about Ventilation and Humidification)
thanks again .
RE: VRV ( Inquiry about Ventilation and Humidification)
if you already don't get support designing (the part where they sell it to you!), who does your client get support?
no rep nearby means no factory startup, no licensed contractor, ....
My advice if you have Mitsubishi rep nearby, go with Mitsu. Many spare parts, much denser support.
RE: VRV ( Inquiry about Ventilation and Humidification)
RE: VRV ( Inquiry about Ventilation and Humidification)
in vrv express you can use the program to correctly set up piping system, outdoor unit and so on.
you also need vkm programm to calculate exact temperature downstream of ventilation unit.
that you need some outside software to calculate how much load is taken by ventilation unit so that you can correctly select additional indoor unit for the space.
not ideal, but it works. daikin does not offer software which covers "rounded" calculations. they are still better than they were not long ago, though; in times when competitors were already offering comprehensive calculation software they were still offering just their fancy tables.
RE: VRV ( Inquiry about Ventilation and Humidification)
see related systems and equipment and fundamentals handbooks from ASHRAE, you should get better answers than from vendors. You should start to design systems without relying on vendors. Love the observations by HerrKaleun above - No vendor, No spec, period.
Remember, Vendors are..... Vendors, they are there to SELL equipment, not engineer systems for you. And they WILL LIE to anyone to sell their equipment.
RE: VRV ( Inquiry about Ventilation and Humidification)
especially VRV vendors... "oh you have low ambient temp, don't worry... oh you don't even have simultaneous heating and cooling, VRV still is the best system for you... "