Results 1 to 7 of 7
Thread: ahu coil tev
-
23-04-2013, 09:03 PM #1
ahu coil tev
looked at a Ahu today unit has 4 coils but only 2 tevs outlet from valve was teed off to 2 coils I think it might work better with 4 tevs
-
23-04-2013, 09:38 PM #2
Re: ahu coil tev
nice drawing haha
tev's should be sized for the system anyway, if it works dont maul, fitting 4 tev's and running bulbs and by the time u run all ur pipework you wont be able to get in the ahu and if u do do it, no doubt the pipes will vibrate and chaff through
-
24-04-2013, 06:08 AM #3
Re: ahu coil tev
the problem is out let temp from coils is not balanced one is at -4 and one is at +9 as there is no control where the refrigerant goes after the valve so you can not set the super heat correctly for each coil. space to fit valves is not a issue as the units are 240kw units the problem is part of the coils are icing and parts of the coils are not very cold
-
24-04-2013, 07:13 AM #4
Re: ahu coil tev
Go for it then, maybe fit liq line solonoids and sight glasses to stage ur cooling. Hope ur pipework is better than ur drawing
-
24-04-2013, 08:09 PM #5
Re: ahu coil tev
What part of the country is the installation Martin?
Only asking because I did something similar and mine worked fine at commissioning stage but as I haven't been back to the job for 2 years, you may be looking at my work
-
24-04-2013, 09:07 PM #6
Re: ahu coil tev
Hertfodshire the drawing is the best you get with windows 8 lol
-
24-04-2013, 09:33 PM #7
Re: ahu coil tev
I'll post a couple of photo's then lol