HanifanHVAC
Region: US
Saturday 20 December 2025 21:34:53 GMT
4682
218
48
28
Music
Download
Comments
Darryl Jochec :
7.5 lbs is at satisfied pressure
2025-12-31 05:01:22
0
poshhdog :
Aside from hot/ cold decks, they also function on actuators for reheat coils. Introducing heating hot water
2025-12-23 05:05:59
3
Danny :
I dont think its very small, I believe its adequately sized for its job.
2025-12-22 01:15:05
1
KORNDAWG :
I do all the pneumatics at our company. Take spring rate add together and divide by 2 and that's neutral. Say 7-12 spring rate. So add that's 19 then divide by 2 and you get 9.5 so set stat at ambient room temp and adjust pressure to 9.5 psig. Dialed.
2026-01-17 21:33:58
2
Neville Falwell :
2 story laboratory buiding, it interfaced with AB SLC 100 via pressure switches to control the air handlers
2025-12-27 14:08:06
1
JackMaster414 :
Great video, but if water and oil come out of that port, your pneumatic system is in BIG trouble…next video….dual pressure, night set back
2026-01-17 13:43:38
1
7NATE9 :
I did one once and it worked. The painter broke it taking it apart.
2025-12-22 10:29:50
2
joelmitch67 :
Work on them all the time here in la
2025-12-29 21:56:28
1
30RAP :
Thanks for taking the time to do this.
2026-01-17 07:00:12
1
foragesband :
Awesome video
2026-01-07 05:05:04
1
HanifanHVAC :
10psi is usually the neutral/satisfied psi of most pneumatic systems. In this case with direct acting, if the psi drops below 10psi, then the hot deck damper starts opening. The lower the psi, the more open the hot deck damper is for that area that the thermostat is controlling. If the psi raises, then the cold deck starts opening. The higher the psi, the more open the cold damper. They’re actually controlled by only one actuator and are connected together so if the hot deck opens, the cold deck is automatically closed. Hope this helps!
2025-12-21 16:16:22
0
E_N456 :
work on pneumatic all the time with my company based out of ny. coworkers refuse to work on it, its clean simple work. great video
2025-12-31 03:26:06
1
Fulgur GS :
how did you know to do 10 psi when you reached temp? its not always 10 right? or is their a way to find out what psi you need for a specific temp?
2025-12-21 14:43:53
1
Bay Air Conditioning & Heating :
Is it reverse acting or direct
2026-01-14 22:13:18
1
HVAC GURU :
Great explanation ✌
2025-12-21 03:52:52
1
Carlos Garza :
Those screws get lost cause the remove them to remove cover, when u are supposed to turn inward the covers then ist removed then unscrew to lock
2026-01-10 17:58:22
1
Luis Elizalde :
Thanks very interesting.
2025-12-28 19:37:17
1
HVAC GURU :
I used to calibrate mercury stats back in the day.
2025-12-21 03:57:08
3
Jonathan :
very cool, never seen that before. Also have no idea what a hot or cool deck is lol. Thanks for the vid
2025-12-21 23:43:29
3
Hey, I just :
Wow thanks man had no idea it was made by Johnson Controls
2025-12-20 23:49:43
1
Joseph Lannigan :
They used pneumatic controls bc of voltage drop over long wires especially low voltage air is the same even if it’s a mile away
2026-01-05 04:09:44
0
HanifanHVAC :
Let me know what else you guys would like to see and I’ll try my best to show it when or if I come across it. There are a lot of things related to hvac in this building if you all want me to get into it. I think in the next video on pneumatics I’m going to show you and talk about the actual air compressors that supply the air for the pneumatics throughout the building. But what would you all like to see?
2025-12-22 00:18:06
0
Lets Be Techs :
that's pretty cool, I have messed with pneumatic zone systems and dampers but never a stat, the ones I dealt with used 24v stats
2026-01-16 03:16:12
0
To see more videos from user @hanifanhvac, please go to the Tikwm
homepage.
