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Tim McElwain

Tim McElwain

Joined on August 17, 2009

Last Post on April 23, 2014

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I would venture to say that

@ March 7, 2014 1:10 PM in Carlin Gas Conversion or new oil tank?

the boiler will probably last another 10 years with a Carlin EZ Pro the new Carlin Burner. I wish that the near boiler piping could be changed as copper is not a good idea on steam. All of the conversions I ever did required some refurbishing of the existing boiler, including perhaps a new fire box or at least a target wall in the chamber, removing the outside jacket and checking the sections for proper sealing, and in the case of steam making sure all the controls etc. worked and did not need any maintenance.

Part of the issue with replacing oil steam boilers with gas atmospheric steam is the efficiency is much lower do to high excess air requirements.

This boiler looks like it has been maintained and with some gasket replacement etc. it will go 10 more years.

I looked back at my records and I have converted 27 of these over the years. I took a chance and called one of the customers that had the conversion done eight years ago (Carlin G3B) and it is still running with good efficiency. The customer is more than happy with the long term operation. The only service has been to replace a hot surface igniter three years ago. The boiler is given annual maintenance by one of my trusted service companies here in this area.

What was the question

@ March 6, 2014 4:31 PM in Adjusting a Gas Control

always good to get a second opinion especially on adjusting a gas control.

Your boiler is a good

@ March 6, 2014 4:29 PM in Carlin Gas Conversion or new oil tank?

candidate for the new Carlin EZ Pro conversion burner, have it converted just make sure whoever does it has experience with gas conversion burners.

With the HE and VHE boilers

@ March 6, 2014 4:24 PM in Help needed on flame rollout switch keeping tripping

there is a flap between the transition (RED Hose) and the flue collector (WHITE Hose). If that flap is not working the pressure switch will not work properly and you will get poor combustion due to restriction caused by the flap. It needs the top removed from the flue collector and a cleaning and a check of the flap to see if it needs replaced. This is a very typical problem with the HE and VHE boilers with this flap. This by the way was the beginning of a design system to reclaim some of the heat lost up the flue in the flue collector. There is a copper coil in the collector which is part of the boiler system water tubing.

What is your location

@ March 5, 2014 2:11 PM in Steam Training

in the northeast. I have a training center in Rhode Island, you can contact me at

What is recommended in the

@ March 4, 2014 9:38 PM in Ultra 155

I and O manual is usually the best to follow. Why are you asking is there a problem?

Has it been

@ March 4, 2014 9:36 PM in WM GV90+ Backfiring

cleaned and serviced since it was installed? Has a combustion analysis been done?

Are there any lights flashing on the United Technology 1013-200 control?

What is your location

@ March 3, 2014 10:18 PM in Not getting enough heat.

in New York?

Wire as follows (corrected)

@ March 3, 2014 10:10 PM in Honeywell Zone Valve V8043 wiring

Wire the hot lead (R) from the transformer to one yellow lead, wire the other yellow lead to one thermostat lead, A series circuit and it does not matter which motor lead goes to which connection.  The two red leads (end switch) go to "T T" on the relay. It does not matter which red goes to which "T".

Thanks Pughie just one too many sentences.

No asbestoes

@ March 3, 2014 10:03 PM in trageser copper core custom water heater

in these water heaters,

By the way welcome to HeatingHelp!

@ March 2, 2014 8:02 PM in Cgm-4 boiler

We look forward to helping you here.

What do you have for a relay

@ March 2, 2014 8:00 PM in Cgm-4 boiler

on the boiler? Did you take millivolt readings on the powerpile system? If so what were your readings? What was the number of the valve you removed and what are the numbers of the one you installed?

There are

@ February 28, 2014 9:29 PM in Gas fire

gas valves used on either vented or unvented heaters, unvented have to have an oxygen depletion safety device, that can be set for hi-fire or low fire. Get in touch with your local fireplace store they can set you up with just about anything in the way of vented or unvented. 

There are no negative pressure

@ February 28, 2014 9:18 PM in Reducing mod/com output with multiple stage gas valve

gas valves that are what I would call multi stage in the real sense as the turn down ratios are defined by how low the firing rate can go based on burner design and port loading with the varying speed of the inducer. This falls under a standard which has not been changed here in the US, at least not to my knowledge. It has to do with the minimum firing rate for safe ignition based on using flame rectification as a flame proving system.

Kane is a British company

@ February 28, 2014 12:03 PM in KANE 455 flue gas analyser...

the 455 and 457 can be seen at

The majority of testers

@ February 28, 2014 11:53 AM in KANE 455 flue gas analyser...

have an oxygen sensor and a Carbon Monoxide sensor, some can be changed in the field. UEI offers one with a CO2 sensor but none of the others have a CO2 sensor. That is unless Icesailor has info on some new ones I do not know about. Most of the detectors sold today can be sensor changed and calibrated in the field without sending back to the factory.

I believe the Kane is a commercial industrial level tester but I will look it up to make sure.

That pilot is obsolete and

@ February 26, 2014 8:45 PM in Janitrol Automatic pilot

no longer available. You would have to d a complete changeover which is not cheap and requires someone with experience at doing such things. Sound like it is time to replace the old boiler.

Ceiling installation or

@ February 26, 2014 5:01 PM in How many of you carry

wall receptacle are probably more for convenience and will still work it just may take a little longer to alarm. Most of the over the counter detectors alarm at 70 PPM after 240 minutes which satisfies UL-2034. My detector I use alarms at 9 PPM immediately, much safer.

Eric, I believe

@ February 26, 2014 12:01 PM in How many of you carry

you meant CO not CO2?

Carbon Monoxide at

@ February 26, 2014 12:00 PM in How many of you carry

60 degrees is .97 specific gravity as compared to air which is 1.0 SG. As the temperature goes down however CO may actually become slightly heavier than air. It brings me to something I teach my classes, CO will accumulate at typically mid point in a room. So the detectors should be at that point (sorry Massachusetts), I call it "head to bed" head standing up to bed lying down. I prefer for use in my home portable detectors like CO Experts 2014 or 2015. I can move them from room to room depending on what rooms are occupied especially at night on the night stand in the bedroom. I heat with a pellet stove so definitely one in the room about 25 feet from the stove.

The fact that CO and air are so close in SG makes CO even more dangerous. Your body will actually absorb CO faster and hold it longer than it will oxygen.

Education is the big thing get to Jim Davis classes or Bacharach and my 3 day combustion testing design equipment classes.

Gasoline from Natural Gas?

@ February 25, 2014 1:27 PM in Gasoline from Natural Gas?

Cheap Gasoline from Natural Gas — Finally? 
Cheap Gasoline from Natural Gas — Finally?[u][color=#0066cc]Oxidative coupling[/color][/u] converts natural gas to ethylene. Unfortunately, stopping the reaction before the ethylene becomes carbon dioxide has eluded researchers until now. According to the MIT Technology Review, a [u][color=#0066cc]new nanowire catalyst[/color][/u] prevents the runaway reaction, and can produce large quantities of gasoline at half the cost of an oil-based product.

More from [u][color=#0066cc]Oil & Gas Technology[/color][/u]...

How many of you carry

@ February 24, 2014 7:05 PM in How many of you carry

a Personal Protective Equipment Carbon Monoxide detector?

What level of PPM does it go off at?

Should fire department first responders and police have detectors?

All this is really not necessary as you would quickly be able to tell if CO is present the minute you enter a dwelling as it would cause a headache, sore throat and you would know it was CO. What do you think about that statement.

Recent CO incidents have brought to question proper training, personal CO detection carried on your person, and police and fire personnel entering buildings and being over come.

Should public buildings be required to have CO detectors?

A wet kit Combustion Analyzer set up will pick up CO immediately and a zero smoke reading on a gas boiler would tell you if you had high levels of CO. What do you think about that statement?

On an oil boiler or furnace it is not necessary to have a wet kit (blue chemical) Fyrite for measuring oxygen?  It is not necessary because we take an over-fire draft reading.
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