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Is it possible to run a fireplace vent (direct vent) not in straight line(horizontally), but about 5" down on a 12" running length, that is in a slope of 34 degree? Anyone can help?

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Hello green rose. My uncle had a old stove like you have seen in the western movies with right angle pipeing to the wall of his one room country store. If you use the correct size diameter pipe/duck for your fire place, correct seal for the temperature for the wall, and rain/bug cap on the end of the duck YES. Be very careful for wall studs when routing through the wall. Smoke will follow the heat, heat will seek the least resistance to the highest path.

Posted on Oct 01, 2008

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Hi, our outside vent keeps freezing, ant suggestions on this issue? Thanks for your time.


Add a 12" piece of pipe elbowed down if possible. Also make sure the pipe is sloped back to the furnace 1/4" per ft.

Jan 11, 2015 | Heating & Cooling

1 Answer

Proper vents for a mobile home


The amount of air that flows to each room is determined by the size of the ducts. Once pressurized all rooms should already be balanced. The diffuser may alter the direction of the air but the hot air will quickly rise and the cold air return from the furnace will such the colder air from all rooms at once down the hallway. Hence the diffuser is doing it's job, It does not need to be replaced. Trailer sized diffusers are difficult to get and match. If you cut the hole size larger to allow a house diffuser you may have unbalanced the amount of heat for each room... if you cut them all larger then it is back in balance again. Weather the air goes up or sideways is just personal preference. You can get magnetic shield to divert the air if you please for far less money.

Nov 13, 2013 | Heating & Cooling

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Blade on fireplace heat o lator appears to be turning the wrong way. Heat does not come out of the top of the fireplace. What do I do to be able to take out the heat o later and reverse the fan?


Roger. it depends of whether this is a Gas Fireplace or a Wood Burning Fireplace?

If it's a direct vent gas fireplace, the blower was installed incorrectly. To access the blower, you will have to dismantle most of the interior of the firebox and the burner tray (Interior floor of the firebox). This will involve disconnecting the gas line from the burner. The blower is on the floor of the control compartment and is attached to the rear wall of the control compartment. Whoever installed it, has it aimed in the wrong direction. Which is can of hard to do, since there is an arrow on it, pointing in the UP direction. Once you unplug it, you can take out the sheet metal screws that hold it in place, and it will be quite obvious which way the exhaust should face. Which is UP.

Now that I've told you how to do all of that, I must be totally honest, by telling you, the blower will not increase it's efficiency. Your Direct Vent Gas Fireplace is rated as a Decorative Gas Appliance only. It is not heater rated. In fact, 80 % of all the heat goes out the direct vent. The only real heat, is generated off the glass, once it's hot.

So now, you get the chance to make the decision. With all that's involved, is worth changing the blower and not really gain anything?

If you have a wood burning, brick fireplace Heat-a-Lator, just turning the fan motor around, so that it's pulling air into the chamber, will solve the problem.

I really hope all of this has helped you. If I can be of further assistance please let me know. Thanks.

Jul 14, 2011 | Heating & Cooling

1 Answer

We have not turned the heater on since 2010. it is a gas with fake logs.A rennai flame fire inbuilt standards. Husband says the thermacouple is not working? what do you recommend?


Stephanie, I 'm not sure how it was determined, that your direct-vent gas fireplace needs a Thermocouple? As a dirty pilot light will also mimic a faulty thermocouple. In addition, if the fire hasn't been used since Winter of last tear, and the gas line to the unit has been turned OFF since then, the air in the gas line must be purge, before the Pilot will light and hold.

If all of the above can safely be ruled out, then the thermocouple should be replaced. The facing of the fireplace will have to be removed, to access the Thermocouple.and it's connections to the gas control valve. You didn't mention which Rinnai Gas Fireplace you have, but most if their units, use Thermocouple part # 90193475. If you're going to replace it, it would be a good idea to also replace the Thermocouple Retainer, part # 9377.

I hope this helps you to further troubleshoot and solve the problem. Please let me know. Thanks.

Jun 21, 2011 | Rinnai Heating & Cooling

1 Answer

Gas fireplace wont stay lit- it is a sealed unit so can taccess the pilot or gas holes in the logs. is it safe to remove glass panel?


Yes, removing the glass is safe, if you do it carefully, so as not to break it. Put it well out of your way, after removing it. In fact, removing it is the only way to access and service the Pilot Assembly and the Burners.

If the pilot won't stay lit, there are several things that can cause this on a Direct Vent Gas Fireplace:
  • The direct vent on the outside of the house is block or clogged.
  • Wind is blowing back through the direct vent, blowing out the pilot.
  • Low gas pressure
  • A dirty pilot.
  • The thermocouple and/or Thermopile (part of the pilot assembly) has failed.
If you can provide me with the make and model number of your gas fireplace, I may be able to furnish you with an Owners Manual, that will help you to continue to troubleshoot the problem.

Hope this helped you.

Apr 29, 2011 | Heating & Cooling

1 Answer

Is the gas stove Dovre model DV450, by heatilator, serial # GA384694 a B -Vent or Direct Vent?


Janny, generally with Heatilator gas fireplaces, the letters in the Model Numbers indicate whether it's a Direct Vent or a B-Vent. In your case, it's a Direct Vent. Had it been a B-Vent the Model Number would be BV450.

Hope this answered your question. Please be knid enough to rate my reply to you. Thanks.

Mar 24, 2011 | Heating & Cooling

1 Answer

Our Rinnai C85 tankless water heater is used for radiant heating. During the heating season it will occasionally throw a "12" code and cut out. It will reset and run for several days. Technician...


Sorry to read about your problem, I hope this helps you out.

Ok your code 12 is a gas issue, or this listed below

Check that the gas is turned on at the water heater and gas meter. Check for obstructions in the flue outlet.
Ensure gas line, meter, and/or regulator is sized properly. Ensure gas type and pressure is correct. Bleed all air from gas lines. Ensure proper Rinnai venting material was installed. Ensure condensation collar was installed properly. Ensure vent length is within limits.
Verify dip switches are set properly. Ensure appliance is properly grounded. Disconnect keypad. Disconnect EZConnect or MSA controls to isolate the problem. Check power supply for loose connections.
Check power supply for proper voltage and voltage drops. Ensure flame rod wire is connected. Remove flame rod and check for carbon build-up; clean with sand paper or emery
cloth. Disconnect and reconnect all wiring harnesses on unit and PC board. Check all components for electrical short. Check gas solenoid valves for open or short circuits. Remove burner plate and inspect burner surface for condensation or debris.

your manometer levals should be around 3-4

if you are running other gas appliances, like pool heater

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question's. take the time to rate us.Thanks and good luck

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Jan 04, 2011 | Heating & Cooling

1 Answer

What is the maximum length of exhaust venting that one can use


According to the manual the longest run of pipe that can be used is 78.7" (6'6.7"), but the maximum termination height is 51.2" (4'3.2"). Hope this helps
http://www.delonghi.com/delonghi/data/int/usa/libretti.nsf/d43b2a60086dfe93c1256a47004ad1f5/37974a66fe82678885256f1200671bfa/$FILE/CF210.pdf

Jan 18, 2010 | DeLonghi CF210 Portable Air Conditioner

2 Answers

I have a Peterson Real-Frye ceramic vent-free fireplace/ log set in my bedroom and my problem is that the log set constantly shut off and the piole goes out. What is my problem and how can this problem be...


there is a thermocouple which is a piece of metal that sits in the pilot flame if this is not in the flame the pilot will go out if this is bad the pilot usually will not light or stay lit let me know if this is useful or of any ?'s

Jan 06, 2009 | Heating & Cooling

1 Answer

Rudd exhuast and air intake lines


You need to make sureyou are at least 12" above ground with your termination if you live where you get accumulating snow levels. Next, your exhaust needs to be separated from your intake via a "goose neck"(straight pipe out of your house with 90 degree elbow pointed up then attach a 10" piece of pipe with a 90 degree elbow pointed out away from your house. The reason you want to keep them separated is that your intake will **** exhausted air into combustion chamber causing burner lift etc. due to no oxygen to properly burn. I usually put a 45 degree on intake so it is not so inviting to birds etc. Good Luck

Mar 10, 2008 | Heating & Cooling

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