Information about how to interpret Mahnehelic Gauge.

[sanchezbond007]

Hi everybody I had some questions about a Mahnehelic Gauge.

What is good for?
How can Interpret the readings?
What is recommended return static presure. whats high and low?
What is recmmended supply static presure. Whats high and low?
How can I know if the return is too big or to small? Using Mahnehelic Gauge.
How can I know if the supply is too big or to small? Using Mahnehelic Gauge.
How do I know if the filter is dirty or the evaporator coil?
What is a total low static presure? What indicate that?
What is a total high static presure? What indicate that?

[freonr22]

http://www.dwyer-inst.com/primer.cfm

and

http://hvac-talk.com/vbb/showthread.php?t=645371&highlight=magnehelic

here are some great articles

http://hvac-talk.com/vbb/forumdisplay.php?f=135

[sanchezbond007]

Thanks for reply I cant read the articles that you send me cause the system said.

sanchezbond007, you do not have permission to access this page. This could be due to one of several reasons:

Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
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http://www.dwyer-inst.com/primer.cfm

and

http://hvac-talk.com/vbb/showthread.php?t=645371&highlight=magnehelic

here are some great articles

http://hvac-talk.com/vbb/forumdisplay.php?f=135

[freonr22]

Links to Udarrell's website are not permitted. Due to the DIY rules.

[beenthere]

Links to Udarrell's website are not permitted. Due to the DIY rules.

[freonr22]

my apologies beenthere

[sanchezbond007]

you help me so much I am working for around 17 years on refrigeration and air conditioning but right now I am working as hvac tech in orlando fl and I have not experienced interpreting the mahnehelic. thanks for your help.

my apologies beenthere

[Twilly]

Twilly uses it primarily for check pressue switches and venting.

[timebuilder]

you help me so much I am working for around 17 years on refrigeration and air conditioning but right now I am working as hvac tech in orlando fl and I have not experienced interpreting the mahnehelic. thanks for your help.

Six more posts and you can apply for Pro membership, and post in a closed forum.

....which is where questions like this belong.