Joined on December 12, 2010
Last Post on April 20, 2014
@ July 23, 2013 1:27 PM in r22 drop inIt is more important to fix the leaks when converting to the drop in refrigerants. Like 410a, they leak their blend at different rates and will loose their efectiveness. Just converted my wife's parents unit to mo99 due to the cost difference. Fixed the leaks and changed out the dryers and shrader cores. At that time r22 cost over $500 a jug while I could get the mo99 for about $150 per jug.
@ July 23, 2013 1:25 PM in r22 drop inIt is more important to fix the leaks when converting to the drop in refrigerants. Like 410a, they leak their blend at different rates and will loose their efectiveness. Just converted my wife's parents unit to mo99 due to the cost difference. Fixed the leaks and changed out the dryers and shrader cores. At that time r22 cost over $500 a jug while I could get the mo99 for about $150 per jug.
@ June 22, 2013 4:49 PM in A/C classesI don't know what area you are from but here are some links for schools on Long Island. First, a link to western Suffolk's BOCES at Wilson Tech
Next, a link to Eastern Suffolk BOCES:
Here is a link to Bradford Hall. One is located in Bohemia NY. The only problem with this site is that they won't give you any info without giving them your personal information:
Here is a link to Suffolk County Community College's certificate program:
And here is a link to Suffolk's Associates http://www.sunysuffolk.edu/Curricula/HVAC-AAS.asp
@ June 9, 2013 6:44 AM in possible gas conversion and selling equipmentHere is a way to figure out how much you will save on heating your home with gas:
gallons of oil consumed X 1.4 X price per therm of natural gas
price of oil consumed - result of above
The btu rating of oil is rounded to 140,000 for this formula. A therm of gas is 100,000 btus
@ May 28, 2013 5:19 PM in Repco boilershow those builder special boilers would do today. Back when those Repco's where burning though it seemed to be common practice by too many mechanics to keep down-firing them until there was back pressure on them with the smallest nozzles. These boilers where quite easy to clean. If the back pressure could have been avoided they may not have failed at the rate they did.
@ May 9, 2013 5:03 PM in Opinions Wanted!!are the way to go. The Buderus and Baisi are both triple pass systems. I have a baisi B10-4 system in my home and it appears that it would be a very good match for your home if your btu rating is correct. The Basi B10-4 has an output of 84,000 btu/hr and is over 86% efficient. I make my hot water with a phase III indirect. This year I purchased 400 gallons for the year for a 1000 square foot, three bedroom ranch on Long Island. I keep the temp at 70 degrees in the winter.
@ April 20, 2013 8:43 AM in Calling EugeneHi David,
I’m one of Eugene’s students and am in my last semester. Last week Eugene asked the class how many where working now, and it looked like just about the entire class had been hired by those they where interning with. So there aren’t a whole bunch of SCCC students looking for a job after school.
One problem I came across was that some employers are using methods that would make you shiver. After my first semester, and very green, I was hired by one of the local companies. What was the ambient temperature? NYC temp minus ten degrees. How do you properly charge a system? By using default high and low pressures as per the company. Any concern about subcooling or superheat? What’s that?
The first company I worked for just dumped refrigerant from units. When I asked them for a recovery machine to protect my EPA standing I was told they were working on it. They came to a solution the next week. I was laid off.
Right now I’m working for an employer that has a senior refrigeration tech that uses a lot of old school techniques. The difference here is that when I voice my opinion and concerns they listen and take action.
So the problems I see in my limited time working in HVAC are that there are just not enough qualified techs coming into the trade. My first AC class had well over twenty students but my last class has barely ten left. The second problem is that those not being properly trained in the theory of HVAC are being shown some terrible practices. The last problem is when someone tries to correct these practices they loose their value to their employer.
@ April 8, 2013 1:20 PM in warminMaineI agree with you icesailor when you support the use of tigerloops. Back in the day they where considered a bandaid fix. But not any more. Two pipe systems never run clean due to the increased vac created by them. Tigerloops solve that problem. I also like the fact that the tigerloop acts as a small holding tank for the oil thereby allowing it to heat up a bit before entering the pump. This is a big advantage for those using outside tanks.
You bring up another good point about the removal of the return line. A tigerloop won't solve a break in the feed oil line. But imagine the mess if the return line breaks outside! Holy Cow! I just filled up my tank and I need another delivery already. A pretty expensive cleanup that can be avoided by installing a tigerloop.
@ April 8, 2013 1:15 PM in warminMaineI have to say that I have seen tons of check valves on oil lines to fix a problem that was eventually fixed by removing the check valves and replacing or fixing the suction leak in the oil line. Check valves will assure the oil travels in the direction that is required, but it will not fix a suction leak.
@ April 7, 2013 1:16 PM in Ground water temp for On-demand hotwater in AlaskaInstalling the largest electric water heat that will fit in your conditioned space. Do not hook it up. Remove the insulation from the new electric water heater and have this unit feed your cold water feed. Let the conditioned space heat the tank.
@ April 7, 2013 1:11 PM in warminMaineNot knowing anything more than that you have an overhead oil line, I would guess that you may have air in your oil line.
@ April 4, 2013 8:20 PM in Question on sizing flat plate heat exchangersSo I am designing a system for my home as a project for the system design class I am attending. My home is heated by a oil fired hot water boiler and baseboard. I could just design the ac side for this class but I’m thinking of also including a hot water coil which would eliminate the baseboard. I completed the Manual J for my home and it states that my heat loss is 65,400 Btu/hr.
My plan is to use a flat plate heat exchanger, the type of heat exchanger that the system 2000 uses to make domestic hot water using a plain electric water storage tank, to supply a 50/50 premix of glycol to the coil. My problem is that I am having trouble finding the Btu ratings of these devices. Also, the specific heat of glycol is .85. So I figure the flat coil would have to be rated at 75,000 btu/hr right?
@ March 26, 2013 11:39 AM in Air in Oil LineI would vac check the pump and oil line from the fitting closest to the tank. If you have no leak then your problem is outside. Otherwise find the leak. It could be a bad flair, pin leak in the line, a bad gasket on the top or bottom of your fuel filter, you may have to have the pump fittings redoped or replace the gasket. Check valves do not fix suction leaks, they just add vac to the line. Tigerloop is a good idea too. It is a nice way to create a small reservoir to heat the oil.
@ March 19, 2013 5:46 PM in Anyone else use this trio setup?That boiler sure does look a lot like the Biasi boiler I have down in my basement.
@ March 13, 2013 3:47 PM in Problems with new(er) Honey well spark controlif your neutral is good then you should get the same reading in your meter from hot to ground as you would get from hot to neutral. You can also check from hot to a grounded pipe and compare to the reading from hot to the ground.
@ February 17, 2013 5:12 AM in broken bleed valve on burnerWish you took a picture of the pump. But guessing from the view of the beckett style nozzle line in this picture, I'd guess that it was a 1725 a pump.
@ February 11, 2013 8:20 PM in Looking for a New BoilerIs a bad idea. I don't know where you got your number for BTUs and I don't know where you live. But if your numbers are right then those are the BTUs needed to maintain a home's temp on a 15 degree day here on Long Island. How many days do we get those low temps? For most of the heating season even the best sized boiler is oversized.
As far as what type of system is best, all I will suggest is a low mass three pass boiler which is oil fired. I prefer the Riello burner. LP is more expensive than oil and contains about 93,000 BTUs per gallon compared to oil's approximate 137.000 BTUs per gallon.
@ January 25, 2013 1:38 PM in ThermoPride OL5-85RB no flameDepending on how badly you have saturated the unit with oil, you may be looking at a very smoky start up to new equipment. If you do finally get it to light, you could be looking at a self-inflicted puff back. Sorry to say, but every time you hit that reset, you increase the cost of the inevitable service call.
@ January 15, 2013 4:08 PM in Burnham V-14A summer shutdownIt is not always a good idea to shut your boiler off for the summer but many people do. I would make sure that the boiler was cleaned very well before turning it off though. Because it will get pretty wet between the sections if it is in a basement. This will turn whatever is in the sections into mud. Turn it on in the fall and you could end up with a substance that is tougher than cement. Also keep an eye on the boiler when you first shut it off. Old flange gaskets tend to leak and could do some real damage to the area around the boiler.
My other concern is your choice of water heater. They are the cheapest to install and, by far, the most expensive to operate. If you have access to gas that would be the way to go. And I'm pretty sure that a gas water heater would be cheaper to run than an electric water heater. Plus you get a much better recovery rate from gas and oil. I have had electric water heaters in the past. When you run out of hot water you have a bit of a wait before you get it back.
@ January 15, 2013 4:06 PM in Burnham V-14A summer shutdownIt is not always a good idea to shut your boiler off for the summer but many people do. I would make sure that the boiler was cleaned very well before turning it off though. Because it will get pretty wet between the sections if it is in a basement. This will turn whatever is in the sections into mud. Turn it on in the fall and you could end up with a substance that is tougher than cement. Also keep an eye on the boiler when you first shut it off. Old flange gaskets tend to leak and could do some real damage to the area around the boiler.
My other concern is your choice of water heater. They are the cheapest to install and, by far, the most expensive to operate. If you have access to gas that would be the way to go. And I'm pretty sure that an oil water heater would be cheaper to run than an electric water heater. Plus you get a much better recovery rate from gas and oil. I have had electric water heaters in the past. When you run out of hot water you have a bit of a wait before you get it back.
@ January 8, 2013 12:06 PM in Upgrading Beckett AFGAll of these upgrades would be worth doing during a repair that required the part to be changed. But they wouldn't be cost effective to change otherwise.