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BAM Nation,

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Thanks so much for being subscribers and I look forward to having a great time developing this book alongside you!

-Phil

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Tip of the Day 6/21/2016

The camera backup method! Sometimes a field controller or supervisory device gets overloaded or is just plain old. So what do you do when the customer wants to upgrade?

Downloading the database from the controller may crash it and you can edit points without breaking things...

This is where clipping tool or your camera on your smart phone comes into play. I've done this many times where I took screenshots of programs and tree structures to help me as I create a replica of the older controllers database.

So think outside the box and take photos or screenshots of the database.

Tip of the day 6/19/2016

Reference the specification when you copy sequence of operations into your control drawings!

I remember it like yesterday, I copied a sequence of operations for an all wood media room in Dallas Texas. The sequence called for 100% outdoor air to be mixed with the air coming off the Direct Expansion coil. This somehow would magically dehumidify the room. I'd complained multiple times about the need for a heating coil to at least try to heat up the air and lower the relative humidity.

However, I was told no and I proceeded to copy the sequence onto the drawings. Imagine my surprise when I was told my sequence wouldn't work and I was responsible for the cost to fix it. Surely, the contracting tier knew that I didn't write the sequence....

I was told however that since I put the sequence on my drawings without referencing a specification I essentially made the sequence my own and was liable for its no performance.

So lesson for you all out there, clearly reference in your drawings that the sequence you have comes from the specification and was not written by you!

Tip of the day 6/18/2016

When setting up your BAS graphics make sure you use a concept called "breadcrumbs".

A breadcrumb is a way to help a user find their way back and to understand where they are. Breadcrumbs can be very simple to setup. For example, if you are in a Air Handler page then the breadcrumb would go back to the page before it or to the home page.

The quickest way to do this is to create a mind map starting at your home page. From here you will go and map out the logical flow to all of your template graphics. Then on each template you will add your breadcrumbs and link back to the previous pages.

So don't let your users get lost, give them breadcrumbs to find their way back.

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In my update to my How to Evaluate BAS series I discuss evaluating graphics packages.

I lay out specification language, evaluation criteria and I describe the technologies behind graphics. As an added bonus I have not only written the article but I have also recorded a podcast for this topic.

You can access the article here http://buildingautomationmonthly.com/evaluatebas and the podcast here http://buildingautomationmonthly.com/episode6

Also for those of you who are interested I recorded a video to give you a behind the scenes of what me recording a podcast is like you can see that here.

I'm interested in your thoughts!

Tip of the day 6/17/2016

Setup your trends for change of value rather then time based logging.
Have you ever looked at a trend report for a space and everything looks normal? You see minor deviations but nothing that would indicate that the tenants report of "it gets real hot then it gets real cold" is true.

In this case you are most likely experiencing a trend report where the time sample is setup to wide and is capturing only snapshots of what is happening. This used to be good back in the day when BAS's had limited memory and computing power but today's machines can handle so much more!

That is why I recommend all trends be setup based on change of value. Change of value when properly tuned will give you a real-time snapshot that is as close as possible to that of your BAS's performance.

So next time you are configuring your trends, consider using change of value!

Tip of the day 6/16/16

Expose points for balancing on your BAS but categorize them so they only show up to certain logins.

I've been on multiple service calls where the airflow or 'k' factor settings were exposed to everyone on the BAS. This is bad for many reasons, one of the biggest ones being that a lot of folks don't keep records of their balancing factors.

However, if you erase these points then it makes it much more difficult for the balancer to do their job. That is why today's tip is to create balancing points but to put them in a category that is only exposed to a select set of user roles.

This gives you the best of both worlds.
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