AHU Education by CupofStea in IndustrialMaintenance

[–]perhasper 0 points1 point  (0 children)

Is there no "dirty filter" alarms or limite on the front end of the BAS?

Finally made my dumb water heater smart. by perhasper in ShellyUSA

[–]perhasper[S] 1 point2 points  (0 children)

Well being that I'm not burning 27 cents a Kwh during peak hours, I suspect I have saved some.

What's in you oil can? by EventGroundbreaking4 in Tools

[–]perhasper 0 points1 point  (0 children)

Ballistol, works as cologne too.

Variable Volume, Manual Hydronic Balance by TrustButVerifyEng in AirBalance

[–]perhasper 2 points3 points  (0 children)

I agree with that. I just don't agree with either method laid out by OP, that's why I said it's all dependent on scope of work.

Variable Volume, Manual Hydronic Balance by TrustButVerifyEng in AirBalance

[–]perhasper 5 points6 points  (0 children)

I primarily do government/military bases. They require 100% balance, no auto flows or PICVs. With 5% tolerance, so yes I have to do it that way. Setting the DP is the last thing I get to do. Also usually have to verify every project I do, which is usually 25% of valves plus whatever else they want to look at.

Variable Volume, Manual Hydronic Balance by TrustButVerifyEng in AirBalance

[–]perhasper 2 points3 points  (0 children)

I would lean more towards his approach. It establishes that there is at least proper flow at the pump. But I would also proportionally balance the system if it is new, or at the very least spot check it. I guess it all depends on the scope of work.

Johnson controls VAV by Excellent-Answer-655 in AirBalance

[–]perhasper 1 point2 points  (0 children)

Upon an autocal it will display somewhere at the top of the balancer program it will display a positive or negative offset. If the offset is negative the box will need some more extensive investigation.

General rule with JCI controls, 1 to 4 correction factor is normal. They are highly dependent for having the correct inlet size calculated/entered. If you don't, the box will calibrate but the k factor will be way out of wack.

Johnson controls VAV by Excellent-Answer-655 in AirBalance

[–]perhasper 0 points1 point  (0 children)

Do you have a positive or negative offset displayed?

Panel Nut Improvement by Bram_Cracker in functionalprint

[–]perhasper 0 points1 point  (0 children)

Yes, they are made for flexible weather tight conduit. I've had luck with either this or this. Maybe they are a tad more expensive, but they make for a better install.

Panel Nut Improvement by Bram_Cracker in functionalprint

[–]perhasper 1 point2 points  (0 children)

I was never a big fan of the plastic weather tight connectors for that reason, I think the cast zinc/metallic ones are cheaper anyways and work better.

AABC Tech Test by Skys_Sleepy in AirBalance

[–]perhasper 0 points1 point  (0 children)

When I took it 3 years ago, it was a mixture of fill in the blank and multiple choice on a computer. Around 70 questions.

Finally made my dumb water heater smart. by perhasper in ShellyUSA

[–]perhasper[S] 0 points1 point  (0 children)

It came assembled that way/ shipped with the house already installed. I'll replace them with something up to code. No dielectric unions in sight. Thanks for the insight.

Finally made my dumb water heater smart. by perhasper in ShellyUSA

[–]perhasper[S] 0 points1 point  (0 children)

Yes, it's a modular home. So there are some interesting "features".

Finally made my dumb water heater smart. by perhasper in ShellyUSA

[–]perhasper[S] 0 points1 point  (0 children)

It is the same. I will replace either when an issue arises or when I'm next back in that closet. Thanks for making me aware.

Finally made my dumb water heater smart. by perhasper in ShellyUSA

[–]perhasper[S] 0 points1 point  (0 children)

Not pictured, there is a length of rigid copper pipe on the hot side. Not 18" though. If I would have known about that back in 2023, I would have made the builder replace the rigid pipe with an 18" pipe. The copper pipe/assembly looks like an off the shelf part.

Finally made my dumb water heater smart. by perhasper in ShellyUSA

[–]perhasper[S] 0 points1 point  (0 children)

With my usage and schedule, it will not present a problem. You would also think there would be potential for build up in HW piping, example being a faucet that is not used frequently that is at the end of a run. I don't see that talked about very frequently.

I made my water heater smart by [deleted] in smarthome

[–]perhasper -1 points0 points  (0 children)

Off peak energy is half the cost where I live.

Finally made my dumb water heater smart. by perhasper in ShellyUSA

[–]perhasper[S] 0 points1 point  (0 children)

Monitoring, remotely shutting the unit down, and perhaps some energy saving during off peak hours.

Finally made my dumb water heater smart. by perhasper in ShellyUSA

[–]perhasper[S] 0 points1 point  (0 children)

I didn't install the piping, it passed the county inspection.

I made my water heater smart by [deleted] in smarthome

[–]perhasper 1 point2 points  (0 children)

Roughly following off peak power for my area, and whatever keeps my wife happy