Currently working on pre wiring a hood controls package for a future job at a restaurant, the wiring is just temporary and will be brought up to code onsite.
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For any inquiries please contact me at chris @hvacrvideos.com
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12523 LIMONITE AVE.
440 - 184
MIRA LOMA, CA. 91752
Working on a hood conversion, we have a smart Hood system and the restaurant no longer wants to use it. They want conventional motor starters, switches, and relays installed. So what we have here is the main power switch that the cooks would turn on when they get there. When they do that, all the motor starters get energized, the makeup air gets energized, the AC interlock relay gets energized, and miscellaneous exhaust fan relays get energized.
But if there's a fire in the building, they have an automatic fire suppression system represented by this switch. When that goes off, all the exhaust fans continue to run. the fire relay is energized, but the Makeup Air and the AC Interlink are not energized because we want to try to suffocate the fire. Same thing, if nobody is in the building, in the fire suppression system goes off, the hood switches off boom.
All the exhaust fans still turn on the make a pair, does not turn on the ACs Do not turn on Okay This is a typical restaurant exhaust wiring package.
In my honest opinion you should not be allowed to uninstall smart fan/hood systems without a architect involved and a permit. Ive seen so many fires over the years.
Glad you are using the best control gear, Telemecanique can't be beaten.
They most gonna switch to vfd control now so you can balance air out better Are you in Kanata ?
DO you need to be a UL 508 panel shop to build this and install it? I've heard various things about that in different jurisdictions
Why so much copper. Does 110V standard require such thick wires?
Okay good but what if the building has bad leakage like an open window? would that make it worse with the exhaust fans running?
I used to do fedex offices, and holy crap the amount of stuff required from fire dept is horrendous but pulling it all out like that makes it make sense. Rock on as always Chris!!
This is the way it should be!!!
It would be nice to turn the fire light switch into a nice real push button fire switch with a safety cover.
Some time delay would be best practice. Instead of DOL start of multiple motors all at the same time.
I lost my phone for a bit! This video looped for a good two hours
Just a question what was the Smart system doing? and why did they want to change it? with every thing starting at once. there is going to be a lot of inrush current on the electrical supply. Are you in Barrhaven ?
This was interesting because I had to create a similar retro fit involving multi zone hvac systems condensing ten units into three simple t-stat controls remotely mounted.
Manufacturers systems were way beyond the customer’s price range.
This hood system is typically on is the electrical contractor to provide and install.
Determining the line of who provides equipment and interconnect has been the topic of many discussions with hvac companies.
I found your channel and subscribed in the same aforementioned vein- being tasked with new walk in freezer equipment and its interconnections for which i was unfamiliar. Unfortunately neither was the hvac installer as it turned out.
This gives me hope that tradesmen exist to find solutions not just farm it out to the other trades.
You can't have a smart hood system when you have dumb employees for sure. One switch they can handle, maybe? Service area Orleans??
Dude. This is the best restaurant exhaust sequence of operation that I have seen
I love retro-fitting systems with just Relay-logic, it makes it very easy to maintain and troubleshoot, compared to a closed smartsystem that might not be repairable in a couple years because of software/new versions coming out.
$$$$$
This would be awesome on a training board with wire diagram. Nicely done Chris!
You're a gold mine Chris, this is such an amazingly explained video to show the basics for interlocking. Definitely going to be going over this video with my apprentices tomorrow 👌
could you share the diagram for this configuration ?
That's cool, I never knew the exhaust fans would be enabled during a fire. Obviously that makes lots of sense when you think about it. I'm just used to everything going 'OFF' for an alarm the A/V & IT world.
I enjoy watching your channel as it's fun to see the intricacies of someone else's job. You do good work sir! 👍
hi Service area Ottawa??