I've used the autocharge port to verify condenser pressure after unboxing, if there is a leak I also flow nitro through it to leak/pressure test worked well for me.
Many units don't have a charge port though. If one does that's totally fine to use it 🙂 they scrapped it with vrvx. Also some units have a high pressure service port added next to the transducer which can also be used to check there's pressure. Usually the guys brazing stuff in just find it easier to Crack the service port though. Whatever works to check its not flat though.
Thanks Dylan! More to come. Working a video this weekend I hope to have out to you all but it may take me one more week to complete. Total commissioning package. Lots of info. Stay tuned.
I’m sure you’re aware but the current refnet installation guide allows for 30 degrees wiggle room from the horizontal plane. What are your thoughts on that? I try and tell every installer to keep them flat. Have you seen any refrigerant issues when putting them on a slight angle?
@@dylanh2326 we try to say plus or minus 15, folks like to take advantage and the baseline rule is you should be able to eye ball that sucker level. Slightly tilted decreases the flow the upper branch gets. You want them flat.
You are responsible for having a clean tight dry system. Daikin doesn't endorse press fit fittings in North America at this time. The responsibility is yours my friend. I'm not a fan of them on vrf because the dual pressure line gets so hot and so cold very fast and very often the fitting and the pipe will not expand and contract at the same time. This causes a brief "spit" of refrigerant that leaks from the system every heat/cool cycle. So if you have 50 of those spits or 500 of those spits every cycle potentially, you'll find there's a leak at some point and the system faults on U0. Keep in mind if this happens when you pressure test the system again it will appear there are no leaks. This is because the pipe is pressed against the fitting tight. Folks will argue that the gasket installed in the fitting is supposed to help prevent this spit from occurring. Yet here we are having had to replace many of these fittings later. So all I'm allowed to say is that it's my opinion to braze when you can braze and only use press fit when needed. But again I stress this is only my opinion and that, as of today, daikins stance is that however you get to it, they Want a clean tight dry system. Hope this helps. And to be clear. Just because this "can" happen does not mean that it will always happen. These brands state all the time that it works fine on vrf. But I have to receive any test data on vrf other than "it holds 2000 psi" lol - which for the record I could care less about. Let me see the expansion and contraction testing with fitting on copper pipe. But I digress. All of this is only my opinion based on what I've dealt with to date.
Per my understanding, when multiple VRV IV heat recovery outdoors are installed, the Oil-equalizing line is required. But where is this port located? Looking at the installation manual I can't find such port. I browsed tons of pages in Google with no result...
@@InverterAlways @InverterAlways the model is REYQ12T7Y (VRV IV - r410a). We ordered BHFQ23P907A (Multi-module connection kit for 2 module systems). So, does it mean that no other pipe lines are required other than the main 3 pipes?
Again, in the north American market vrv4 and newer does not have a 4th equalization line. I would expect a 4th service port to exist if there was outside the north American market. Check the Install manual it'll have a section on piping. If it's not there that's likely because that unit doesn't need it. You can also check with your local Daikin rep just to be safe.
Dana, thanks for your work. I have a question about the Daikin controller options. I have two installed ducted FIT systems. My controllers are located in one downstairs location where wires can be connected. One system, for the upstairs, needs a remote sensor - preferably wireless. It might be possible to get a four wire run to the location, but not easily. Can you think of any Daikin controller options? While I contracted for the Daikin One communicating controllers, Honeywell’s were installed, solely to use a remote wireless sensor. Hoping your knowledge of these products can point me in a direction
You have Honeywell stats installed upstairs? To my knowledge for fit systems I thought only the daikin one or ctk04 stats would work amd neither currently have a remote sensor option. I don't however work on fit much so I could be wrong. I am primarily focused on vrf amd ductless mini splits in my dailies. You'd be best to double check with your contractor and if they don't know have them check with their vendor. But as I mentioned before I do not believe the fit works with any 3rd party stat. If it does now these days, then just any remote sensor compatible with your stat should work fine here, but still nothing for daikin one available yet on the remote sensor side (wireless sensors).
@@InverterAlways yes. I have the CTK04 Honeywell controllers, both mounted downstairs; with the controller for the upstairs system receiving inputs from a Honeywell wireless remote C7189R1004. Key in your response seems to be that Daikin has no solution for a wireless remote that can pair with any of its controllers.
@@themattixes good to know. So the ctk does have a wireless sensor option. Thanks. You're correct. The key in my response is that as of right now there are no daikin proprietary wireless sensors that will integrate with your system.
If you had to put a number to the percentage of installers who actually braze with nitrogen (when you aren't watching) what would you give? 25% 50% or 75%? I omit 0% and 100% to give an actual, real range.
Tge contractors I normally work with purge 99 percent of the time. It's usually pretty clear when they don't it's not a matter if there will be problems but more an issue of where will the problems occur. Most of the folks I work with have learned early on with inverter products that purging is not optional. Now if you ask what about the techs I don't work with. Many many many of them have been caught not purging. Usually were coming in after the fact pointing out the mistakes. I would also note that I see way more folks who do residential work breaking the rules far more often than those in the commercial world. The commercial guys know the cost for messing up while sometimes in residential folks just swap out failed equipment to cover up their mistakes during installation. I think many techs have come a long way though through their mistakes and these days at least in my market the majority of techs purge. But not all of them.
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HI Dana, that is a life saving tips.
Thank you!
Great thanks very informative
Thanks Dana,
Really appreciate your efforts.
Robert
Energywise DHP
Thank you Robert!!
Thanks Dana 🇬🇧
No problem thanks Tom!
I've used the autocharge port to verify condenser pressure after unboxing, if there is a leak I also flow nitro through it to leak/pressure test worked well for me.
Many units don't have a charge port though. If one does that's totally fine to use it 🙂 they scrapped it with vrvx. Also some units have a high pressure service port added next to the transducer which can also be used to check there's pressure. Usually the guys brazing stuff in just find it easier to Crack the service port though. Whatever works to check its not flat though.
Great video as always Dana !
Thanks Dylan! More to come. Working a video this weekend I hope to have out to you all but it may take me one more week to complete. Total commissioning package. Lots of info. Stay tuned.
I’m sure you’re aware but the current refnet installation guide allows for 30 degrees wiggle room from the horizontal plane. What are your thoughts on that? I try and tell every installer to keep them flat. Have you seen any refrigerant issues when putting them on a slight angle?
@@dylanh2326 we try to say plus or minus 15, folks like to take advantage and the baseline rule is you should be able to eye ball that sucker level. Slightly tilted decreases the flow the upper branch gets. You want them flat.
Thanks!
hey thank you!!
thanks
You're welcome
How about using RLS press fittings
Instead of braziing
You are responsible for having a clean tight dry system. Daikin doesn't endorse press fit fittings in North America at this time. The responsibility is yours my friend. I'm not a fan of them on vrf because the dual pressure line gets so hot and so cold very fast and very often the fitting and the pipe will not expand and contract at the same time. This causes a brief "spit" of refrigerant that leaks from the system every heat/cool cycle. So if you have 50 of those spits or 500 of those spits every cycle potentially, you'll find there's a leak at some point and the system faults on U0. Keep in mind if this happens when you pressure test the system again it will appear there are no leaks. This is because the pipe is pressed against the fitting tight.
Folks will argue that the gasket installed in the fitting is supposed to help prevent this spit from occurring. Yet here we are having had to replace many of these fittings later. So all I'm allowed to say is that it's my opinion to braze when you can braze and only use press fit when needed. But again I stress this is only my opinion and that, as of today, daikins stance is that however you get to it, they Want a clean tight dry system. Hope this helps. And to be clear. Just because this "can" happen does not mean that it will always happen. These brands state all the time that it works fine on vrf. But I have to receive any test data on vrf other than "it holds 2000 psi" lol - which for the record I could care less about. Let me see the expansion and contraction testing with fitting on copper pipe. But I digress. All of this is only my opinion based on what I've dealt with to date.
Do you prefer Daikin or some other manufacturers?
How about lg?
Daikin without question.
Per my understanding, when multiple VRV IV heat recovery outdoors are installed, the Oil-equalizing line is required. But where is this port located? Looking at the installation manual I can't find such port. I browsed tons of pages in Google with no result...
That's vrviii and earlier. Vrv4 and later didn't have equalizer lines, at least not in the US
@@InverterAlways @InverterAlways the model is REYQ12T7Y (VRV IV - r410a). We ordered BHFQ23P907A (Multi-module connection kit for 2 module systems). So, does it mean that no other pipe lines are required other than the main 3 pipes?
Again, in the north American market vrv4 and newer does not have a 4th equalization line. I would expect a 4th service port to exist if there was outside the north American market. Check the Install manual it'll have a section on piping. If it's not there that's likely because that unit doesn't need it. You can also check with your local Daikin rep just to be safe.
Dana, thanks for your work. I have a question about the Daikin controller options. I have two installed ducted FIT systems. My controllers are located in one downstairs location where wires can be connected. One system, for the upstairs, needs a remote sensor - preferably wireless. It might be possible to get a four wire run to the location, but not easily. Can you think of any Daikin controller options? While I contracted for the Daikin One communicating controllers, Honeywell’s were installed, solely to use a remote wireless sensor. Hoping your knowledge of these products can point me in a direction
You have Honeywell stats installed upstairs? To my knowledge for fit systems I thought only the daikin one or ctk04 stats would work amd neither currently have a remote sensor option. I don't however work on fit much so I could be wrong. I am primarily focused on vrf amd ductless mini splits in my dailies. You'd be best to double check with your contractor and if they don't know have them check with their vendor. But as I mentioned before I do not believe the fit works with any 3rd party stat. If it does now these days, then just any remote sensor compatible with your stat should work fine here, but still nothing for daikin one available yet on the remote sensor side (wireless sensors).
@@InverterAlways yes. I have the CTK04 Honeywell controllers, both mounted downstairs; with the controller for the upstairs system receiving inputs from a Honeywell wireless remote C7189R1004. Key in your response seems to be that Daikin has no solution for a wireless remote that can pair with any of its controllers.
@@themattixes good to know. So the ctk does have a wireless sensor option. Thanks. You're correct. The key in my response is that as of right now there are no daikin proprietary wireless sensors that will integrate with your system.
We went with daikin and we dump them quick had nothing but problems on residentia.
Too bad to hear, though most issues are installation related. Best of luck with the brand you chose.
If you had to put a number to the percentage of installers who actually braze with nitrogen (when you aren't watching) what would you give? 25% 50% or 75%? I omit 0% and 100% to give an actual, real range.
Tge contractors I normally work with purge 99 percent of the time. It's usually pretty clear when they don't it's not a matter if there will be problems but more an issue of where will the problems occur. Most of the folks I work with have learned early on with inverter products that purging is not optional.
Now if you ask what about the techs I don't work with. Many many many of them have been caught not purging. Usually were coming in after the fact pointing out the mistakes. I would also note that I see way more folks who do residential work breaking the rules far more often than those in the commercial world. The commercial guys know the cost for messing up while sometimes in residential folks just swap out failed equipment to cover up their mistakes during installation. I think many techs have come a long way though through their mistakes and these days at least in my market the majority of techs purge. But not all of them.
@@InverterAlways Thanks Dana.
We Will never 👎🏾 do daykin again
*Daikin