Variable Refrigerant Flow (VRF) Problem

[Anonymous]

Hello Guys !
I'm working on my graduation project with revit, lately I found out that revit couldn't handle with the VRF systems,it happened after I located my indoor and outdoor units then I chose generate layout & the revit couldn't connect the pipes for the VRF system 
So I chose to connect the pipes manually from the outdoor units to the indoor units(ceiling cassette) 
By the way I downloaded the VRF units from LG website !
so my questions are : 
1. Is there any method to connect the pipes automatically ?
2. If I connect them manually is it ok for the load calculation & the losses in the pipe lines ?

[RobDraw]

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@Anonymous wrote:

Hello Guys !
I'm working on my graduation project with revit, lately I found out that revit couldn't handle with the VRF systems,it happened after I located my indoor and outdoor units then I chose generate layout & the revit couldn't connect the pipes for the VRF system 
So I chose to connect the pipes manually from the outdoor units to the indoor units(ceiling cassette) 
By the way I downloaded the VRF units from LG website !
so my questions are : 
1. Is there any method to connect the pipes automatically ?
2. If I connect them manually is it ok for the load calculation & the losses in the pipe lines ?

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I've been doing some large VRF systems lately. They are quite popular these days for a number of reasons. We only show them very schematically and provide the vender drawings and manufacturer families. I'm fairly certain that those systems need to be designed by the vendor and the very nature of the systems makes calculations complicated.

IMHO, getting automatic routing to work is very doable with proper routing preferences, just like any other system.

I'm not experienced enough in systems to know if calcs are doable in Revit OOTB or if additional software is needed. 

[Anonymous]

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@RobDraw wrote:

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@Anonymous wrote:

Hello Guys !
I'm working on my graduation project with revit, lately I found out that revit couldn't handle with the VRF systems,it happened after I located my indoor and outdoor units then I chose generate layout & the revit couldn't connect the pipes for the VRF system 
So I chose to connect the pipes manually from the outdoor units to the indoor units(ceiling cassette) 
By the way I downloaded the VRF units from LG website !
so my questions are : 
1. Is there any method to connect the pipes automatically ?
2. If I connect them manually is it ok for the load calculation & the losses in the pipe lines ?

---

I've been doing some large VRF systems lately. They are quite popular these days for a number of reasons. We only show them very schematically and provide the vender drawings and manufacturer families. I'm fairly certain that those systems need to be designed by the vendor and the very nature of the systems makes calculations complicated.

IMHO, getting automatic routing to work is very doable with proper routing preferences, just like any other system.

I'm not experienced enough in systems to know if calcs are doable in Revit OOTB or if additional software is needed. 

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I think you are right about that these systems should be drawn & designed by the vendor 
But as for my graduation project I already chose to design VRF system for my building with revit, so should I change the (VRF) system or is there any other solutions ?

Thanks rob & I really appreciate it  🙂

Mazin

[Anonymous]

I once received training from daikin for VRV system...indeed its quite complicated...there are certain rules that you must concern to design VRV..such as max pipe length..position between put door and indoor...what happen if your outdoor unit level higher that your indoor unit...also the cooling calculation...if your company have vendor of daikin perhaps they can explain to you about VRV system...those kind of thing that i mentioned ..things that revit can't define..

[Anonymous]

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@Anonymous wrote:

I once received training from daikin for VRV system...indeed its quite complicated...there are certain rules that you must concern to design VRV..such as max pipe length..position between put door and indoor...what happen if your outdoor unit level higher that your indoor unit...also the cooling calculation...if your company have vendor of daikin perhaps they can explain to you about VRV system...those kind of thing that i mentioned ..things that revit can't define..

Mmmh yeah as you mentioned I think I should contact LG to get better information & explanation about their systems, and I've heard that they have an software called LATS that works very well with Revit but that software needs a serial number 😞
anyway thank you bruh !

[RobDraw]

According to the website LATS is for AutoCAD. http://www.lg-vrf.com/lats-cad-2-0.aspx

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@Anonymous wrote:

Hello Guys !
1. Is there any method to connect the pipes automatically ?
2. If I connect them manually is it ok for the load calculation & the losses in the pipe lines ? 

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I just wanted to revisit your questions. The answer to both of them is yes, but it requires a lot of front end work.

Automatic connecting should be easy. These systems are simple to construct. Pipes are small and don't come in many sizes. Only a few fittings are used. Setting routing preferences should not take much time. 

Manual connections are always acceptable and calcs will work with whatever is assigned to them.

Revit is capable of what you want, but not OOTB. There is a lot of front end work to do if you want calcs to work. You might want to look at the requirements of the project and determine how deep you go into the calculations aspect of it.