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  1. Are the pvc flues separate all the way to the...

    Are the pvc flues separate all the way to the atmosphere or are they common vented (connected)?
  2. Thanks for posting this. I will discuss it with...

    Thanks for posting this. I will discuss it with the UL Standards Technical Panel and NFPA 211 technical cmte. In the meantime, note Duravent still covered themselves by pushing back to the ANSI...
  3. Typo- B-vent carries a 1" clearance to...

    Typo- B-vent carries a 1" clearance to combustibles. Flying fingers typing.

    Draft is simply the stack pressure differential With Respect To the CAZ air. Remember, "draft" is technically not mass...
  4. B-vent carries a 6" clearance to combustibles....

    B-vent carries a 6" clearance to combustibles. Single walled unlisted connector is 6" as you stated. If mfrs. are to continue putting their condensate ports on the front corners of coils, a tech has...
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    You need to figure out what is causing the...

    You need to figure out what is causing the negative pressure pulling air down the chimney before adding a useless hole in the wall. You need to ensure the upper envelope is sealed. Can ceiling lights...
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    5 y/o is their Intellifire IPI ignition. Always...

    5 y/o is their Intellifire IPI ignition. Always start with inlet gas pressure because the rest doesn't matter if you don't have gas to the valve. Can't really get into diagnostics on this public...
  7. At 7 wci, you don't need any regulation for most...

    At 7 wci, you don't need any regulation for most equipment. Pipe it with a spool piece the size of the 325. When the system gets boosted to 2 psi, they can't turn it on until you have a MP regulator...
  8. Thread: Cv

    by hearthman
    Replies
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    2,381

    I used to sell industrial controls. I suggest you...

    I used to sell industrial controls. I suggest you read through some Masonelian materials to better undersand valves, Cv, cavitation, etc.
    HTH
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    These units are notorious for the ground wire...

    These units are notorious for the ground wire corroding. A new ground wire to a clean attachment will usually do the trick.
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    This is Not a DIY forum. We recommend you...

    This is Not a DIY forum.

    We recommend you have a qualified tech replace the valve and pilot assy. with one approved by the mfr. if available. Do NOT attempt DIY repair and do NOT attempt...
  11. Replies
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    36,364

    They quit making that remote about 20 yrs ago....

    They quit making that remote about 20 yrs ago. Just get yourself any basic battery powered on/ off remote and you're done. This is a DIY capable installation.
    The red button on the remote receiver...
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    1,207

    Cementing a barometric damper shut is usually a...

    Cementing a barometric damper shut is usually a sign of weak draft. Note the counterweight is in the Vertical slot on a horizontal run. As noted by Steve, et al. More pics, info., and combustion...
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    1,369

    What is the make and model of the fireplace?

    What is the make and model of the fireplace?
  14. What is the size of the chimney liner and...

    What is the size of the chimney liner and material? It appears it may have been relined. Also, please provide a clear shot of the rating plate on your water heater and pics of the vent connector....
  15. This is NOT a DIY site. Ignition must occur...

    This is NOT a DIY site.

    Ignition must occur within 4 seconds of a call for heat. The blue-ish flame may be a sign of a venting problem. Do NOT continue using this fireplace until repaired.
  16. Refer to the manual

    Blocking the air ducts will overheat the fireplace and probably burn the house down. It's out of warranty so why not replace it with a modern fireplace. That is, if you're even allowed to burn open...
  17. Replies
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    Thanks for all your hard work and patience. Enjoy...

    Thanks for all your hard work and patience. Enjoy life buddy.
    Bob
  18. The other guys gave you some ideas on the IAQ...

    The other guys gave you some ideas on the IAQ side of it. I'll address the medical side.

    You both should see your MD. Describe the situation and bleeding issues. He may want to do some blood...
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    All these are valid points. When you demo'd the...

    All these are valid points. When you demo'd the house and rebuilt it more than a certain %, the entire house loses any grandfathering and must meet the current code.

    You bring the liner into the...
  20. Replies
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    The fireplaces were tested and listed with those...

    The fireplaces were tested and listed with those caps. Caps on prefabs are a HUGE component of the cooling system for the whole fireplace. You modify the cap you could burn the house down. I've seen...
  21. Replies
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    1,836

    Several of those air cooled factory built...

    Several of those air cooled factory built fireplace chimneys are too short: min 3 feet above the roof plus 2' above any point within 10 LF measured by the flue gas outlet and not the rain cap. Those...
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    I'd use the TC adapter to document the millivolts...

    I'd use the TC adapter to document the millivolts open and closed circuit. Make sure the pilot burner is clean or replace it with an OEM. Then use a combustion analyzer to measure the O2 at the...
  23. Replies
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    It's actually required around Philly by PECO for...

    It's actually required around Philly by PECO for exterior piping because their gas is scrubbed. Gotta' check with the utility. Zinc sulphide flakes can clog a valve just as copper sulphide black...
  24. Replies
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    Copper is approved by the gas codes UNLESS you...

    Copper is approved by the gas codes UNLESS you have greater than 0.3 grains of hydrogen sulphide per 100 SCF. Your LP provider will advise you but understand most of the country uses soft copper for...
  25. Thread: CO2 alarm

    by hearthman
    Replies
    7
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    1,660

    They use O2 sensors in MRI centers to detect...

    They use O2 sensors in MRI centers to detect helium leaks. A helium sensor would be very expensive and unpredictable. An O2 sensor showing a drop in ambient levels indicates helium displacing the O2...
  26. You need a qualified tech to inspect and service...

    You need a qualified tech to inspect and service it. You can clean the unit using a citrus-based solvent cleaner. If the glass seal is gone, you could be smelling aldehydes, which accompany carbon...
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    First of all, you should have the information in...

    First of all, you should have the information in the conversion kit from HL. It would include either a burner change or adjusting the air shutter. Typically air shutters on gas fireplaces are wide...
  28. Most mfrs. publish hysteresis of about 3 degrees...

    Most mfrs. publish hysteresis of about 3 degrees F on these remotes. They use cheap thermistors so don't ask for too much from them. Check with the mfr. Otherwise, simply set it 8 degrees over what...
  29. This is a listed decorative appliance. It is not...

    This is a listed decorative appliance. It is not designed for heating. It cannot be modified unless specifically stated by the mfr. with their approved parts. I know of no mfr. or appliance that has...
  30. Manometer tubing is used for very low pressures....

    Manometer tubing is used for very low pressures. Shouldn't be an issue. If it was for higher pressures, then yes, the static pressure of proportionately higher for smaller diameters, just as it is in...
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    There's nothing in the codes and stds....

    There's nothing in the codes and stds. prohibiting a double female single walled vent connector in the IRC Ch 24 or NFPA 54. If you have your requisite min. 2 screws per joint, what's the problem?
  32. Replies
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    No pic showing connection to B-vent. You should...

    No pic showing connection to B-vent. You should have a "draft hood connector" as your transition to single walled pipe. That allows you to connect the single walled piping without risk of penetrating...
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    LOL Wayne. I have the manual and read it. They...

    LOL Wayne. I have the manual and read it. They don't say it's worthless to test below 3"wg. They claim that when testing properly installed ductwork, the leakage from properly made seams and joints...
  34. Replies
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    There are several reasons to use this equipment....

    There are several reasons to use this equipment. You can use it with infrared thermography to locate leaks to the exterior for calculation of energy waste and savings after remediation. You can use...
  35. Replies
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    A package unit as shown has both supply and...

    A package unit as shown has both supply and return trunks adjacent to themselves but also close to the combustion chamber and exhaust. If there is a shunt in the ducts, 'stuff' from one side and...
  36. When you change from common vented appliances to...

    When you change from common vented appliances to a single gas appliance, this triggers the need for a level II inspection per NFPA 211. That will undoubtedly indicate the need for a chimney liner....
  37. Check burner compartment to blower for bypasses. ...

    Check burner compartment to blower for bypasses.
    Did you perform combustion analysis?
    Are there any low points/ sags/ traps in the venting?
    Is combustion air intake hard piped to outdoors or...
  38. Replies
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    A chimney must be suitable for the class of...

    A chimney must be suitable for the class of service. A 'chimney' is not rated for positive vent pressure. If you have a CAT III or IV gas appliance, it must be vented using listed venting (UL1738)...
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    Galvanized steel pipe has been fine and accepted...

    Galvanized steel pipe has been fine and accepted by the gas utility. They require galvy outdoors so no problem with H2S. If you're really worried about it, take a piece of chrome plated brass...
  40. You need to determine if the noise is coming from...

    You need to determine if the noise is coming from the box or the liners. Typically, banging in a metal fireplace is caused by the box being wracked so sitting uneven with stresses. you may need to...
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    Give it 20-40 min. then re-test. ANSI Z21.88...

    Give it 20-40 min. then re-test.

    ANSI Z21.88 calls for 25ppm AF with half burner covered with embers. They do this under ideal conditions with the unit really cooked in and going for as long as...
  42. Replies
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    20,473

    I use SprayWay because it's an alcohol-based...

    I use SprayWay because it's an alcohol-based foam. Mfrs. have determined ammonia-based glass cleaners can cause a rainbow discoloration of the tempered and ceramic glass (yours is ceramic). To remove...
  43. Replies
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    You can seal the circumferential joints once...

    You can seal the circumferential joints once you've established the layout then silicone the firestop penetrations both inner and outer. You can attach a short length of tubing to a caulking gun for...
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    The O2 number will change as the vent heats up...

    The O2 number will change as the vent heats up and thermosyphons. That's about normal for a gas DV with a short vent run. The CO is supposed to be <25ppm AF. That's on a unit in perfect condition...
  45. Replies
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    When you frame out for the firestop that forces...

    When you frame out for the firestop that forces your clearances to combustibles- 3" top/ 1" sides and bottom. Frame it in on all four sides then insulate up to this box but not inside. The sheathing...
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    You should be fine with your plan Gravity. It is...

    You should be fine with your plan Gravity. It is advisable to to vent off the top then out if you have the 3" clearance but if not it should vent just fine out the rear at that horizontal offset.
    ...
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    PVC has a maximum operating temperature of 140F....

    PVC has a maximum operating temperature of 140F. Typical flue gas outlet temps. are around 110F for normal operation. You can use a tapered thread brass, Nylon, or ss plug with a dab of standard 300F...
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    You would need to remove the flue tiles to make...

    You would need to remove the flue tiles to make room for a liner with the requisite insulation to meet the listing for a zero clearance to combustibles. Any competent chimney contractor should be...
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    Aside from being a code violation and dangerous,...

    Aside from being a code violation and dangerous, open flame testing is virtually useless. The lower explosive limit for methane is 4.4% or about 44,000 ppm. You should be able to detect that level by...
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    BE 41 allows vented logs. If the BE48 has gas...

    BE 41 allows vented logs. If the BE48 has gas knockouts then yes, you can install vented logs. These units were NOT listed for use with ventfree gas logs.
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