For those that don't know the vent valve was required when two diaphragm gas valves were used. Because they were pilot type solenoids the pressure between them had to be relieved for the first valve...
Type: Posts; User: Jim Davis
For those that don't know the vent valve was required when two diaphragm gas valves were used. Because they were pilot type solenoids the pressure between them had to be relieved for the first valve...
I was talking about the water heater flue. Yes, on a new furnace you drill a hole in the flue, but it was the water heater that was mentioned as the problem.
Definitely sounds like he found the problem, but I wonder why he drilled a hole in the flue for the combustion test. That test is taken below the drafthood, not in the flue. I guess he could have...
If your temperature rise is 60 degrees with a 265 degree flue temperature you definitely have bad airflow. As rundawg said the flue temperature should be 302 minimum. Forget the manufacturers spec...
Good idea to leave the water traps open when storing. I actually blow through the hose assembly when it cools down and there is always water in it.
The O2 sensor is exposed to O2 regardless. They...
Unless you are under EPA inspection guidelines there is no reason to measure or control NOX. NOX production increases as efficiency increases. To lower NOX you have to screw up efficiency. ...
If the efficiency of the furnace in low fire is only 50% but is 70% in high fire then it is costing you more regardless of size. A 2-stage can also be inefficient in low fire but not usually as low...
O2 sensors can last 2-3 years but it is rare they last longer. In storage, in vacuum containers they still only have maybe a 3 year life. But if the warranty is 4 years then it doesn't matter.
...
Input 80,000 and output 79,000?? 170 cfm per 10,000 btu? Its a miracle!!
Something wrong with my calculator. 1366 X 44 X 1.08 = 64,900 btus not 79,000??
The nice thing about the built in draft is when something is in a closet or when you are doing a flue interference test. I still think the Dwyer is the best for the flue sizing or restriction test...
NCI is recommending the Sauermann C-030 analyzer. It is priced right and has many features that others don't have. It can measure draft and combustion at the same time with two different probes. ...
Not sure the TIF 8800 would be my choice of gas leak detectors. It does pick up gas leaks but it also picks up pipe dope, after shave, deodorant. A friend of mine and customer smelled gas in his...
Right now I don't don't think you can get either. We are recommending the Sauermann C-030 with Blue Tooth. This allow you to read the display on your I=phone from a distance which is great for...
Odds are that if the O2 doesn't go back to 20.9% there is excess moisture in the trap. Not enough variance to cause a problem. Turning them off and re-zeroing them might make them even less...
They are easy to fix. Other analyzers had similar wires.
As soon as you said you had to put a sign above sidewall vents stating there is a vent below, I knew it was Taxachusetts. Wait spell check got me, it Massachusetts. That was there update to the Code...
If it is still working okay, then just add the Clearwave. If they are having any problems it might need flushing first.
would be shocked to know how little maintenance a tankless water heater needs if you add a Field Controls Clearwave to your water line. Scale is the biggest problem with them and the Clearwave has...
Does it ever make you wonder when you read the beginning of the Gas Code that states, "None of the information in this code has been checked for accuracy, correctness or of sound " Anyone using this...
I compare opening the inspection door on an oil burner to look at the flame the same as opening the door on a refrigerator to see how dark it was before I opened the door. Opening the inspection...
Do you have any proof that the furnaces aren't underfired? At 3.5" I know everyone I tested was! Induced draft furnaces are included in the non-de-rating category, which I assume RTU are also...
Comparing cars to furnaces is like comparing carrots to oranges. In 2006, actual testing at high altitudes by ASHRAE stated that new furnaces at altitude up to 7000 feet didn't need de-rating. ...
The water heater is not an orphan. It was an abused child by its uncle but now it is grown up and able to live a normal life.
Water heaters have hotter flue gases when furnaces are removed because...
I would presume based on the fact that new equipment at 5000 feet is probably quite underfired there will be less carboning. Carboning up is caused by poor setup and installation. Outside moisture...
Call them first. I am not sure if they have any in stock at this time. Phone # 905-898-3912
Talk to Nancy McKerighan she is the owner with her husband. Super nice lady. Tell her Jim Davis and...
Are you familiar with a company called Canco Climate Care in Newmarket, Ont. They have been trained by NCI and can get them. I have been to their place several times.
The only time you check for CO at a register is if it is made of wood and on fire. If CO is coming out of a register it would also be in the room you are standing. No, you do not test at the...
It is not apples to apples but putting sugar in cold water versus hot water has some relevance.
Also anytime someone tries to compare car engines or compression combustion to furnaces combustion...
rundawg - I think we were typing at the same time:}
Which part of the installation and operation has a manufacturer checked the operation? They do no testing at altitudes above 1000 feet. They do not test their equipment with gas outside the 1030...
You guys make me feel proud!!
If it takes more than 5 minutes there is a good chance the pump is weak. On the Bacharach if you put your finger on the port and the pump almost stops its good. If it keeps running and there is...
Never turn your analyzer off when you max CO. Just let it run until it clears as R600 and jbhenergy stated. The CO will not usually re-zero and will just keep giving error messages
2-ton AC = 800 cfm 2-1/2-ton AC = 1000 CFM 3 ton AC = 1200 cfm
80,000 natural draft furnace = 800 cfm Induced draft = 1040 cfm Condensing furnace = 1200 cfm
100,000 natural draft furnace =...
If you are in the South which requires more cooling than heating and the ducts are sized for cooling and there is not enough airflow for heating, there is definitely not enough airflow for cooling...
As I stated, poor airflow and improper venting. Nothing to do with oversizing.
It is amazing that all the furnaces in southern states are 200 to 300 percent oversized and yet they last for 20 or 30 years. When equipment cycles on and off that usually means it accomplished what...
I think that with a 10 year warranty, by the time you need to pay for a new motor you will have saved enough to buy several.
If you check most duct systems and register locations, you will find the supplies in the floor and the returns in the ceiling. That may be great for cooling but not as great for heating. All your...
I have a student that has been trained in the past that I work with over the phone all the time. He is in New Jersey but I am not sure if it is in the North. Frank Marini 914-849=9168. Tell him...
The most heat you can get out of a 60,000 btu furnace is approximately 43,000 btus The most you can get out of a 40,000 btu furnace is about 29,000 btus. That is if the person setting them up...
That doesn't work on a 80%
Question to my students: Does a 60,000 or 80,000 btu furnace come from the factory set at 60,000 or 80,000? At factory settings the 60,000 is more likely a 51,000 and the 80,000 more likely a...
Did you expect anything less? All my students are the best of the best!!
Sounds line you have never had a analyzer before.. How are you going to learn how to use it? Won't find it on You-tube!!
All gas logs regardless of vented or unvented must be checked with a combustion analyzer. It may appear the logs can only sit one way, they only have to been out of alignment a 1/4" to make...
Back in 1994 I taught an oil seminar in Nova Scotia. Gas wasn't allowed there at the time. That has changed since then. People don't realize that oil actually produces less CO2 per btu than LP.
Something I should mention about NCI contractors. Many have been trained and attended classes for many years. They may no longer get re-certified but they still adhere to all the protocols we...
Honestly that's too bad they didn't consult with you guys more. That was a loss of great knowledge on their part.
We will get to play with one sooner or later. It may be great or just okay. ...
All combustion analyzers have a good purpose. The fact that most of the manufacturers that make them don't know how to use them in the field can sometimes create overkill. Fieldpiece engineer...