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Type of Flue pipe for Nordyne Intertherm mobile home gas furnace

The furnace is being installed into a doube-wide mobile home. It's missing the flue pipe(s) and roof cap(s) and I don't know what kind I need to buy. The outer flue piping diamerter is 8" and the inner piping is 5". Does the pipe have to be insulated, or is it just two pipes with one inside the other, with roof caps? I can't find anything about flue piping for mobile home gas furnaces on the web. There are no Intertherm Nordyne dealers in Alaska, and the company's website only has a "dealer locator" which is worthless, or it says a customer can WRITE them and gives their snail mail address -- unbelievable. I can't afford a "heating company installation" with all their extra fees and mark-ups. If I could buy the flue piping and roof caps, I could get someone in the mobile home park to install it.

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The flue is just 1 pipe inside another, no insulation. But has lil support brackets holding the inner pipe in its place, centered to the outer pipe. I googled Nordyne Flue Pipe, and it is available online. And HELLO from the heart of Texas! Hope this helps!

Posted on Mar 12, 2017

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Hello there, Usually the flue size is determined by the BTU which is generated by the unit. Considering that your unit produces between 35,000 and 40,000 BTU per hour the 2" Flue is okay. Although if you can replace it a 3" will do the job better but the 2" will not cause any harm if left in place as the quantity of BTU generated is equivalent to 2" of flue.
Hope this solution has been helpful?
Thank you for visiting FixYa.

Posted on Aug 13, 2011

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My daughter recently purtchased a Trailer house which has a Intertherm Model MMHB-070ABHR-06. When we tried to service the air filter or Filters we discovered there were none. We know there should be


On some of the mobile home style furnaces, the door itself should be louvered for return air to enter the furnace. If so, look and you should see provisions for holding the filter in the door. It may be missing a long spring or other type of clip to retain it though.

If it is a gas furnace the flu pipe should come out the top, look on either side of the flu pipe for a door or pair of doors with a little sheet metal handle. If so, remove and look inside to see if there are provisions there.

Also iIf there is no louvered door, sometimes the filters just rest on top of the furnace. Not a good deal if so.

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1 Answer

I need an Owners Manual for Intertherm M7RL 060A BW


Unfortunantly In order to download the manual you have to fill out that you are a student HVAC professional at NORDYNE University Log In Register
Once you are in you select north american products.
Then select intertherm and click search products.
The Search will come up.
Select HVAC, Leave Select product type set to optional and type in the box below that M7RL. Click Search products.
Click the first Item on the list M7RL 95.1% AFUE Gas Furnace.
This will give you it all!

Be advised. If you are not a HVAC professional. Installing the furnace is not recommended. In order to get parts you will need to have a Contractors license or EPA Certification to purchase from the supply chains like Johnstone supply (the best place to get any part). Please be careful and think about the dangers of carbon monoxide, gas explosions and improper electrical hookups if you are attempting to do the repair yourself.

Hope this helps you
Jay

Nov 03, 2014 | Heating & Cooling

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Vanderhoof BC Canada


http://www.intertherm.net/DealerServiceLocator.aspx

Jan 08, 2014 | Intertherm 56000 Btu Gas Furnace

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Nordyne furnace FEH017HA-04 the fan runs full force when the ac is on but half speed when the furnace kicks in


That is probably normal if it is electric heat to slow the air over the heating elements. Even some gas units do this. Check to see if the unit blower motor has wires for multiple speeds.

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Just replaced pressure switch on intertherm m1mb gas furnace but still codes "pressure switch open"


CHECK FLUE FOR OBSTUCTIONS AS WELL AS COMBUSTION AIR INTAKE FIRST. THEN CHECK TO SEE IF THE FURNACE DRAIN IS OPEN AND NOT CLOGGED [ONLY IF YOUR FURNACE IS A CONDENSATING HIGH EFFICIENCY MODEL, typically the flue pipe will be 2 or 3 inch pvc pipe] over the years more often than not, it is an obstruction or poor drainage which will not prove the pressure switch to allow the burner to ignite. in rare cases the furnace control board could be bad as well.TRY DISCONNECTING FLUE AND COMB. AIR AT FURNACE JUST TO SEE IF FURNACE WILL IGNITE. HOPE THIS HELPS!!!!!!

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My reliance sta-kleen 502 is leaking. The water is dripping on top of the pilot light, extinguishing the flame . Please advise me with step by step instructions to diagnose and attempt fix this myself....


If you have a leaking water heater there is a serious problem.
http://waterheatertimer.org/Water-heater-leaking.html
Page shows how to limp along on a leaking water heater if your water heater needs replacement.

One of three things is causing the water:
1) Loose water connection on top of tank that is dripping down inside tank >> check pipes on top of tank.

2) The vent is clogged or not working correctly causing condensation inside flue pipe.
Condensation water is dripping back down inside tank.
Problem means possible CO poisoning if gas is not venting.
Look at vent pipe to see if joints are corroded.
Use long fireplace match > light match and put into draft hood at top of tank and see if smoke goes up.
Put hand at draft hood opening when water heater turns on to see if vent gas enters home.
Do same test when furnace turns on to see if furnace vent is pushing back into water heater.
Does water heater vent inside same pipe as furnace? You may need to set up separate vent for water heater if furnace gasses are pushing back into home.
Check furnace vent for obstructions.
Look at vent stack top of home to see if hood is in place.
Check if bird nest is built inside warm vent pipe.
Improper flue is top priority for getting fixed so vent gasses properly escape home.
You may have to call a plumber.
Professional plumbing forum:
http://www.thetankatwaterheaterrescue.com/forums/forum3/

3) Your water heater is rusted out.
A rusted tank has to be replaced.
It cannot be repaired.
However, before replacing tank, you do not want a tank failure where tank ruptures and water runs inside home until water is shut off.
This will cause major damage.
Protect yourself first.
Turn off water valve above tank.
Move gas knob to 'pilot' so burner is not heating water.
Open tub spout on hot side to relieve pressure on tank so it will not rupture.

Now you're protected.
Link above shows how to limp along on failed tank until you can replace heater.

You need a new gas water heater from Lowes or Home Depot
Look at label on side of you tank for gallons and btu's of your water heater.
Measure height to flue pipe so you get same height water heater, so pipes don't have to be changed.
You need a pipe wrench and teflon tape which will be wrapped on each pipe thread when pipes are reassembled.

Step1) Drain water heater using valve at bottom of tank.
http://waterheatertimer.org/Water-heater-will-not-drain.html

2) Turn off gas valve going into heater.
When gas valve is perpendicular to gas line, then gas is off.
Dissemble gas line to water heater.

3) Disconnect flue pipe and support flue pipe with wire so it doesn't not fall down. Flue pipe joints should be held together at each joint with 3 screws.

4) Turn off water. Shut off valve is on COLD side.
Disconnect water pipes.

5) Move old water heater out of way.

6) Set new water heater in place. Put water heater in drip pan.

7) Connect water pipes >> cold goes to side marked cold.
Hot to hot.
Buy new flexible water connector pipes at home center for easy installation of water pipes.

8) Connect gas line exactly as it was connected before.
Home center sells flexible gas line connector for easy installation of gas line.
To test for gas leak after installation, mix liquid soap with water and put around gas line joints to see if there are bubbles.
Natural gas has less pressure than water lines, so gas pipes are easy to seal with ordinary wrench.

9) install TP pipe that runs to floor. Use old one off old heater.

10) Fill tank completely with water until water is coming out of tub spout.

11) Turn on gas, and light pilot as shown in manual.
New gas heater sometimes have small water leak when first fired up, so ignore a bit of water.

12) Save water heater manual like it is gold, and read everything in manual.

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1 Answer

I have a mobile home furnace and I have no manual. I think it needs a filter but I can't tell where it is supposed to go or what kind of filter I should use. Is there a diagram available I could look at?...


The filter is usually located in the door or front cover. If you have trouble finding material you can measure opening and get one or more 1 inch thick high effiency filter. You can set these filters on their sides or upright,it really does't matter as long as you have direction of air flow going the right way. Arrows pointing into blower compartment. I have taken two or more filters and duct taped them together to get the right size. Not pretty, but it works.Hope this helps. Thanks

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Intertherm furnace problem?'s


the blower on my furnace keeps going on and off when i turn the furnace on .ichanged the snapdiscs no change changed thermocoupler and therostat still no change whats my problem

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