Ask Experts Questions for FREE Help !
Ask
    wallykap's Avatar
    wallykap Posts: 65, Reputation: 1
    Junior Member
     
    #1

    Feb 25, 2014, 04:22 PM
    How important is pitch of exhaust pipe for high efficiency furnace through wall of h?
    Furnace shuts off a lot with a code of 3 indicating pressure switch... furnace is 6 months old. Could the pitch of exhaust be causing problem (i.e. 1/4 " per 12") orthe three 90 degree elbows in the line? Furnace id 7 feet from outside wall for exhausting...
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
     
    #2

    Feb 25, 2014, 05:18 PM
    Hi Wallykap

    Reasonable questions, for sure! Without knowing the furnace model and the fresh air and exhaust pipe type and sizes I can't answer in any way for certain, but if the furnace is 7 feet from the wall (i.e., probably 10 liner feet if include the vertical piping) and was professionally installed you are probably OK with elbows and distance...I hope.

    With that being said, troubleshooting furnaces is a very difficult thing to do online via text messaging back and forth like this. I'll save you some real time and hassle here and just tell you to contact the manufacturer of the forced air furnace...talk to the technical services department. Here, have the model number and the serial number of the furnace handy and have a basic electrical tester handy (or even better, a GOOD quality one). These tech. departments are very efficient at walking you step by step through problems like this...;) They'll focus you in on the problem part/issue 5 minutes or so...I promise!

    Good luck!

    Mark

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

High Efficiency Furnace Exhaust Pipe Leaking [ 7 Answers ]

I bought a new (40 year old) house recently. It has a gas high efficiency furnace that passed the gas company inspection, so I thought it was OK. But then I saw that there's leaking coming from every single joint in the exhaust pipe. I was told by the home warranty company's person that it was...

Ultra High Efficiency Water Heater - Exhaust Condensate Drain - What to do? [ 18 Answers ]

I want to install an ultra-high efficiency water heater (98%+ efficient). The exhaust runs cool enough that the combustion product water vapor condenses in the exhaust line and needs to be drained. My plumber told me that it was impossible to install this heater, because there is no floor drain....

Exhaust Pipes for High Efficiency Furnaces [ 5 Answers ]

Does the exhaust termination on a high efficiency furnace need to be at a 90 degree on the exterior of the house? I recently had both the intake and exhaust pipes replaced. The intake on the exterior is on a 90 degree angle pointing down, the exhaust pipe on the exterior has a straight...

I have a high efficiency (95%) furnace and the exhaust noise bothers my neighbors. [ 16 Answers ]

I have a high efficiency (95%) furnace and the exhaust noise bothers my neighbors. I have had the contractor reroute the exhaust but this just moved the noise to the other side of my house. Is the any why I can muffle/silence the noise?

Exhaust on high efficiency furance [ 7 Answers ]

A year ago I had my old furnace (a York) replaced with a lennox 95% efficient furnace. The exhaust from the new furnace exits the side of the house, and the furnace heats up the house fine. However, I also see some exhaust coming out from the old exhaust on top of the house. Should I still have...


View more questions Search