Re: O/T Question for HVAC guys

Posted by Bob on May 20, 2007 at 19:49:17 from (69.178.229.154):

In Reply to: O/T Question for HVAC guys posted by Pete-IN on May 20, 2007 at 19:43:20:

Typically, the system is kept pressurized to 12 PSI, and has an "expansion tank" or "bladder tank" to allow for expansion as the system heats up.

If the safety valve is "popping off" every now and then, it sounds like the expansion tank is "waterlogged", and needs air, or if it is a "bladder tank" it has failed, and needs to be replaced.

Some systems have a valve in the line to the tank, allowing easy isolation and replacement of the tank. If no valve, you will have to bleed any remaining pressure out of the system DEFORE attempting to replace the tank and/or safety valve.

And, let the system COOL first, please!

Replies:

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]