Working Group

#916 VRF System

Yuya Saito Mon 10 May

Hello all,

We made a short presentation on VRF meta-data model standardization in Haystack Connect last week.

We are planning to establish a basis for tagging VRF system and we are looking for other interested community members to contribute to the working group.

Topics we need help from community leaders include, ・How to express relationship between outdoor units and indoor units including branch box

・Varieties of VRF system: cooling only, heat pump, heat recovery etc.

・Heat source: air-source, water-source etc.

・Indoor unit: cassette, ceiling, wall mounted etc.

・Data points: set temperature, operation mode, fan angles etc.

・VRF data model in Haystack 4

We are currently working on the starting document. We have already received kind offers from several community leaders. Please let us know if you are interested.

Yuya Saito Fri 28 May

We would like to have a kick off zoom meeting early June.

Please fill out your availability from the link below.

【Schedule Adjustment】

Link:

https://docs.google.com/forms/d/e/1FAIpQLSfdOIi3dQVKez8Bo-xtm18toqr0ni9e_1JzweuihGW27Eop8A/formResponse

Due date: 6/2(Wed)

If you can’t log-on to the link, please send me an email.

My email address is yuya.saito@dsv.daikn.com.

Richard McElhinney Wed 2 Jun

Thank you Yuya-san,

This is a great initiative and I encourage the community to contribute to this working group.

I will sign up to this working group and attend the first meetingl

I also encourage other interested members to attend!!

Looking at you Jay Herron ;) !!

Cheers, Richard

Yuya Saito Thu 3 Jun

Hello Richard,

Thank you very much for your reply and comments :)

I would be happy if I could be a help to the community.

Yuya Saito Thu 3 Jun

Hello all,

Thank you very much for your interests and poll.

Based on the results of the poll, we would like to have the kick-off meeting on the following schedule.

【Date and Time】

・US: June 8th(Tue) 6pm-7pm (PDT) 9pm-10pm (EDT)

・Asia: June 9th(Wed) 6:30am-7:30am (IST) 9am-10am (CST) 10am-11am (JST) 11am-noon (PT)

I am sorry if I could not accommodate for your schedule. I will, of course, share the updates here in the community.

For the detail, please refer to the following notes. I really look forward to e-meeting you next week.

【Meeting Detail】

1, Date and Time

・US: June 8th(Tue) 6pm-7pm (PDT) 9pm-10pm (EDT)

・Asia: June 9th(Wed) 6:30am-7:30am (IST) 9am-10am (CST) 10am-11am (JST) 11am-noon (PT)

2, Zoom Link (fixed)

https://us02web.zoom.us/j/87560666817?pwd=NlZBMGsyQndZaGdiOTBCV1ZvMWtXdz09

3, Agenda

1) Introduction: Objectives, Member Introductions

2) Working Group: Project Scope, Communication and Cooperation

3) Model Definition: VRF Definition, Previous discussions on Project Haystack

4) Discussions, Next Meeting

Yuya Saito Thu 10 Jun

Hello everyone,

I am sending the meeting minutes for the previous meeting.

Please see from the weblink below. (Special thanks to Brian, Rui, Mike and Tak.)

https://drive.google.com/file/d/1DVYuzUKtdF7x5fZQj8QA9nW5Eeyy-Tdf/view?usp=sharing

Basically, I am going to communicate via an email for the discussion.

I set up a google mailing list for this WG (vrf_haystack@googlegroups.com).

(I sent an invitation. Please let me know if you have any issues.)

【Collection of links】

·GoogleDoc:  https://drive.google.com/drive/folders/1B78wbnQsIeRSiS8LKVabIq4SyHd41oEp?usp=sharing

·Mailing List: vrf_haystack@googlegroups.com

·Zoom:   https://us02web.zoom.us/j/87560666817?pwd=NlZBMGsyQndZaGdiOTBCV1ZvMWtXdz09

Yuya

Yuya Saito Thu 17 Jun

Dear all,

We would like to have 2nd zoom meeting.

Please fill out your availability from the link below.

【Schedule Adjustment】

Link: https://docs.google.com/forms/d/e/1FAIpQLSfdOIi3dQVKez8Bo-xtm18toqr0ni9e_1JzweuihGW27Eop8A/viewform?vc=0&c=0&w=1&flr=0

Due date: 6/22(Tue)

If you can’t log-on to the link, please send me an email.

My email address is yuya.saito@dsv.daikn.com.

I really look forward to meeting you again.

Best regards,

Yuya

Yuya Saito Wed 23 Jun

Dear all,

Thank you for taking the time to answer the form. I would like to set up a meeting by below schedule.

【Meeting Detail】

1.Date and Time

・US: July 1st(Thursday) 6pm-7pm (PDT) 9pm-10pm (EDT)

・Asia: July 2nd(Friday) 6:30am-7:30am (IST) 9am-10am (CST) 11am-12am (AEST)

2.Zoom Link (fixed)

https://us02web.zoom.us/j/87560666817?pwd=NlZBMGsyQndZaGdiOTBCV1ZvMWtXdz09

3.Agenda (tentative) 1)VRF modeling on Brick Schema -Rui 2)Proposal - Annie 3)Proposal - Yuya 4)Discussions 5)Action items and next step

Thank you very much in advance.

Best regards,

Yuya Saito

Yuya Saito Thu 8 Jul

I am sending the meeting notes for the 2nd meeting. Please see from the weblink below. (Special thanks to both speakers, Rui and Annie)

https://drive.google.com/drive/folders/1B78wbnQsIeRSiS8LKVabIq4SyHd41oEp

I also stored the slide received from Annie in GoogleDoc.

https://drive.google.com/drive/folders/1uBuEU9_R9CV2fN1_R0ifW7bOXbG6DR-9

Yuya Saito Tue 27 Jul

Thank you for taking the time to answer the form.

I would like to set up 3rd meeting by below schedule.

【Meeting Detail】

1Date and Time

・US: August 2nd(Monday) 6pm-7pm (PDT) 9pm-10pm (EDT)

・Asia: August 3rd(Tuesday) 6:30am-7:30am (IST) 9am-10am (CST) 11am-12am (AEST)

2Zoom Link (fixed)

https://us02web.zoom.us/j/87560666817?pwd=NlZBMGsyQndZaGdiOTBCV1ZvMWtXdz09

3Agenda (tentative)

We are going to share the agenda later.

Yuya Saito Mon 16 Aug

I am sending the meeting notes for the 3rd meeting. Please see from the weblink below. https://drive.google.com/drive/folders/1B78wbnQsIeRSiS8LKVabIq4SyHd41oEp

Thank you!

Yuya Saito Wed 18 Aug

I would like to update the current status of the VRF system working group.

In June, we started to discuss about what kind of major components (equip) of VRF system have to be defined. Then, we are planning to move onto the taxonomy and data points for each equip.

We are currently discussing about the necessity and content of “VRF system” (equip) which integrate all the related equipment of the same VRF system such as indoor units and outdoor units.

We are also discussing about the taxonomy of VRF system components including VRF indoor unit which is likely to be separated from existing Air handling Equip in Haystack.

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