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"Rail" had a good experience, as many people have. However, there have been many owners who have had bad experiences - as well as the tech's who had to explain the failure somehow.

The sealants...

One entry asks how do you get any cleaning fluid in, and that is a good question.

I have poured in solvent when the line was big enough, and I have around somewhere a little container with a screw...

I agree the inducer probably should come on as well as the blower to be extra safe and clear out any gas (if the gas valve opened).

If I had to use anything other than RX-11, I think I would choose mineral spirits. Isn't mineral spirits a more pure solvent?

However, mineral spirits is also very flammable.

It would take a...

In most residential furnaces is the inducer motor energized on a call for heat when a limit is open?

As I recall many older furnaces the module never gets energized with an open limit, but what...

I think I will do the following:
Before the end of the summer I will get back out to this place and do some static pressure readings.
Then, if it works out that the temperature rise is too high at...

Does anybody know of any reliable data on the reduction of costs of air conditioning with and without an operating economizer?

Rooftop economizers are expensive to repair.

The science is good...

The reference for my cities competency card test was NFPA 96, Commercial Kitchen Exhausts, or something like that.
It is worth having and isn't all that expensive.
What I recall them saying is...

I got a good job in a Hospital Maintenance Department one summer while I was in school.
Learned a lot.
It is like looking for any job - you just have to be in the right place at the right time.

There was this great article in some magazine about a reefer semi in Mexico with about a $1 Million dollars worth of seafood in it.
Some shmuck tech comes along and becomes a hero because he...

Before getting to be a "regulator" a little time in the field would be good.
Just try telling the restuarant owner with one customer all day that you will look for the leak but they are tough to...

Well, it looks like I did it. The furnace blower seems to be too big for the ductwork. When I slow up the blower the heat rise get high, and even will trip the furnace off on the hi-limit.
...

Thanks drj controls

You know, I ran out to my regional carrier guys.
Since I am not a carrier dealer they first wanted not to help. But they have seen me around over the years and gave me a copy...

I do not have NWST and don't want to buy it yet.

I just got called in job that is password protected (level4 or level1)

Can it be unlocked from the display?