InterNACHI Message Board - HVAC http://www.nachi.org/forum Topics include heating, venting, and air conditioning. en Fri, 20 Nov 2009 23:40:26 GMT vBulletin 60 http://nachi.cachefly.net/forum/images/2006/misc/rss.jpg InterNACHI Message Board - HVAC http://www.nachi.org/forum hvac switch http://www.nachi.org/forum/f20/heating-venting-air-conditioning-switch-45304/ Fri, 20 Nov 2009 21:50:39 GMT Is it required to have a switch to turn off the HVAC unit or is it acceptable to be wired directly Is it required to have a switch to turn off the HVAC unit or is it acceptable to be wired directly ]]> HVAC dlee2 http://www.nachi.org/forum/f20/heating-venting-air-conditioning-switch-45304/ Water in Combustion Air Blower http://www.nachi.org/forum/f20/water-combustion-air-blower-45264/ Thu, 19 Nov 2009 14:42:12 GMT I inspected a Lennox G26 (2002), yesterday, with a combustion air blower full of water. The problem has existed long enough for a large amount of rust to have accumulated directly below the fan and you can hear the "splashing" and gurgling noises from the water as the fan operates.

Does anyone know a cause and a remedy? ]]> HVAC jbushart http://www.nachi.org/forum/f20/water-combustion-air-blower-45264/ boiler year please http://www.nachi.org/forum/f20/boiler-year-please-45252/ Thu, 19 Nov 2009 02:09:37 GMT Peerless hot water boiler, model number 85-245. No serial number was available. I will try to post some photos, but may not get to that point. Owner says it is only 8 years old. I say much older. Any help would be greatly appreciated. Thanks, todd Attachment 33397 (http://www.nachi.org/forum/attachments/f20/33397-boiler-year-please-100_5978.jpg) Attachment 33398 (http://www.nachi.org/forum/attachments/f20/33398-boiler-year-please-100_5979.jpg) Attachment 33395 (http://www.nachi.org/forum/attachments/f20/33395-boiler-year-please-100_5977.jpg) Peerless hot water boiler, model number 85-245. No serial number was available. I will try to post some photos, but may not get to that point. Owner says it is only 8 years old. I say much older. Any help would be greatly appreciated.

Thanks, todd
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]]> HVAC tvanvranken http://www.nachi.org/forum/f20/boiler-year-please-45252/ Must have to do with the economy http://www.nachi.org/forum/f20/must-have-do-economy-45247/ Wed, 18 Nov 2009 23:58:07 GMT Had a client call me today and the conversation started—you know—“you did a home inspection for me on….” She was a first time home buyer and she took my advice to have the air handler and a-coil cleaned since it appears it has been run for a period of time with no filter in place and was very dirty. What the technician told her next was that there was a gap between the main supply and the furnace closet ceiling that was continually sucking fiberglass particles into the system and distributing the fiberglass particles throughout the home through the ventilation supply ducts. What I would normally expect to hear is that he suggested that the gap be closed off/ sealed. What he suggested instead is that the client have all of the OLD blown in fiberglass insulation vacuumed out of the attic and have NEW blown in fiberglass insulation installed. The client said the HVAC tech even pointed out dirty fiberglass particles along the edge of the carpet next to the wall. She asked me why I hadn’t mentioned this problem in the report. I did not know what to say, other than that I have never heard of such an action and recommend she get a second opinion before she paid this guy a dime. Note that the home was built (and insulated) in 1995. ]]> HVAC acatterton http://www.nachi.org/forum/f20/must-have-do-economy-45247/ Helpfull HVAC age chart Link http://www.nachi.org/forum/f20/helpfull-heating-venting-air-conditioning-age-chart-link-45229/ Wed, 18 Nov 2009 13:26:40 GMT http://hisearch.org/hvac.aspx http://hisearch.org/hvac.aspx ]]> HVAC rkie http://www.nachi.org/forum/f20/helpfull-heating-venting-air-conditioning-age-chart-link-45229/ age ? http://www.nachi.org/forum/f20/age-45217/ Tue, 17 Nov 2009 23:02:50 GMT any help is appreciated - American Standard model - UGF-105EA serial - H60C004408 thanks any help is appreciated -
American Standard

model - UGF-105EA
serial - H60C004408

thanks ]]> HVAC mbyrd http://www.nachi.org/forum/f20/age-45217/ Trapped dishwasher drain pipe http://www.nachi.org/forum/f20/trapped-dishwasher-drain-pipe-45103/ Sat, 14 Nov 2009 02:27:12 GMT The copper pipe attached to the trap attached to the cast iron waste is the drain for the dishwasher. Aside from contadct of dissimilar metals and not being installed to the manufacturer's recommendations, just what is the defect here?
It doesn't look like contamination of the cabinet from siphoning would be a problem.
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]]> HVAC kshepard http://www.nachi.org/forum/f20/trapped-dishwasher-drain-pipe-45103/ Carrier BDP Age http://www.nachi.org/forum/f20/carrier-bdp-age-45075/ Fri, 13 Nov 2009 14:25:40 GMT I'm kind of lost here - the model and serial numbers for this evaporator unit don't seem to follow and info I have - any one know the age of this unit?

Carrier BDP 1601X77710 (Ser# CK5BXW024017AAAA)

Thanks in advance ]]> HVAC bsmith http://www.nachi.org/forum/f20/carrier-bdp-age-45075/ Carrier http://www.nachi.org/forum/f20/carrier-45055/ Thu, 12 Nov 2009 19:42:53 GMT Can someone give me an estimate of age? 1974-75?????

Electric Carrier units

AC: Model 38HQ940300 Serial R055014
Heat: Model 40AQ030330JR Serial Q0A54360

Data plates on both were very hard to read. I can't seem to locate them in either of my reference books.

Thanks in advance!:)

Randy ]]> HVAC rstufflebeem http://www.nachi.org/forum/f20/carrier-45055/ How is this for ventilation? http://www.nachi.org/forum/f20/ventilation-44999/ Wed, 11 Nov 2009 00:39:42 GMT The batt insulation is installed on the roof decking and there are no soffit, peak ridge, or air hawks installed. Trying to do a sealed in attic on the gulf coast is just not gonna work. :roll: The batt insulation is installed on the roof decking and there are no soffit, peak ridge, or air hawks installed. Trying to do a sealed in attic on the gulf coast is just not gonna work. :roll:
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]]> HVAC rwashington http://www.nachi.org/forum/f20/ventilation-44999/ Hydronic Furnace http://www.nachi.org/forum/f20/hydronic-furnace-44997/ Tue, 10 Nov 2009 23:45:28 GMT I ran into a Hydronic furnace system the other day that had been designed for use with a 40 gal LP gas water heater. The owner had removed the LP gas heater and replaced it with a 40 gal electric(in order to save money). The new system had not yet been used through an entire winter. I admit to being weak in my knowledge of this type of system. I expressed concerns that the new system might not operate as designed knowing that an electric heater does not have the recovery rate of an LP heater. Of course, I defaulted to the experts and recommended they bring in a Heat/Air guy qualified in this type of system for his advise. I did also advise the Realtor(verbally) to google it for general info and to call the factory and talk to the experts, since he expressed to me a complete lack of knowledge in this area. I am aware now that this killed the deal. Anyone have any thoughts on my call? I ran into a Hydronic furnace system the other day that had been designed for use with a 40 gal LP gas water heater. The owner had removed the LP gas heater and replaced it with a 40 gal electric(in order to save money). The new system had not yet been used through an entire winter. I admit to being weak in my knowledge of this type of system.
I expressed concerns that the new system might not operate as designed knowing that an electric heater does not have the recovery rate of an LP heater. Of course, I defaulted to the experts and recommended they bring in a Heat/Air guy qualified in this type of system for his advise. I did also advise the Realtor(verbally) to google it for general info and to call the factory and talk to the experts, since he expressed to me a complete lack of knowledge in this area.
I am aware now that this killed the deal.
Anyone have any thoughts on my call? ]]> HVAC lrollins http://www.nachi.org/forum/f20/hydronic-furnace-44997/ Condensation line and combution high effeciency furnace http://www.nachi.org/forum/f20/condensation-line-and-combution-high-effeciency-furnace-44976/ Tue, 10 Nov 2009 11:56:33 GMT I inspected a 2 year old house that just got sold. The HVAC unit is RUUD Achiever 90 Plus - High efficiency. I looked at the manual online it says it has a trap in the unit for the furnace side. the condensation line for the AC connects to the furnace condensation line. Is the trap good. Plus it looks like it is taking combution air from the attic I inspected a 2 year old house that just got sold. The HVAC unit is RUUD Achiever 90 Plus - High efficiency. I looked at the manual online it says it has a trap in the unit for the furnace side. the condensation line for the AC connects to the furnace condensation line. Is the trap good. Plus it looks like it is taking combution air from the attic
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]]> HVAC eferraioli http://www.nachi.org/forum/f20/condensation-line-and-combution-high-effeciency-furnace-44976/ A/C compressor age, please http://www.nachi.org/forum/f20/c-compressor-age-please-44949/ Mon, 09 Nov 2009 22:56:39 GMT Unitary:

M/N DRCS0601CD
S/N 980853157

I'm guessing 1998, but none of my references for that brand show that serial number format. TIA

Maybe manufactured under the AirPro brand? ]]> HVAC fnewman http://www.nachi.org/forum/f20/c-compressor-age-please-44949/ Gas Dryer Vent Question.... http://www.nachi.org/forum/f20/gas-dryer-vent-question-44943/ Mon, 09 Nov 2009 20:02:02 GMT older galvanized duct....for dryer vent. What is proper? Image: http://i187.photobucket.com/albums/x296/dawlita/Jose044.jpg older galvanized duct....for dryer vent. What is proper?

]]> HVAC dnasser http://www.nachi.org/forum/f20/gas-dryer-vent-question-44943/ Direct Vent gas logs http://www.nachi.org/forum/f20/direct-vent-gas-logs-44915/ Sun, 08 Nov 2009 15:28:14 GMT Would you call out this vent as being installed too close to combustibles, it less than 12 inches to the mulch. Maybe it is the mulch that is too close to the vent. Thanks!! Would you call out this vent as being installed too close to combustibles, it less than 12 inches to the mulch. Maybe it is the mulch that is too close to the vent.

Thanks!!
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]]> HVAC bhartley http://www.nachi.org/forum/f20/direct-vent-gas-logs-44915/