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Oops. Sorry about that.
You may have to contact your Carrier distributor for the older docs. I no longer have the older generation manuals after a phone change.

The owner's manuals might help, but I would scroll down and start with the installation manual...
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I am running into an issue reading the trouble codes on a Trane 4TUK4530A10N0A A minisplit (listed as a VFR, despite being a single circuit system, about 5 years old, manufacture tag by Ingersoll...

Do you have the PN for the Infinity controller and a model/serial for the unit being controlled? Is the customer wanting to use remote access or are they running any occupied schedules? Does the...

What ya wanna bet that's 18K salary and 72K commissioned! :-)

I have enjoyed my travels to and through Georgia with one exception; I had a one week class in Chamblee and traffic made me wish I was driving a tank! :eek:

Read the posts on this site and notice how many people, amateur or pro, don't bother to read the directions. I watched a "how to use your O/A torch" video the other day and noticed they shut off the...

If this is your passion, more power to you JC! I agree with HVAC 4 though; many of the techs I have had the pleasure of knowing agree that there is something that happens around the five year mark...

Read the directions for your torch set, particularly the handle shutoff procedure. Victor instructs to shut off the handle oxygen, then the handle fuel to avoid a backfire into the tip. If a small...

It's like reminding a sandwich prep box user to keep the dill pickles and tomatoes in the bottom covered for the same reason and getting the "that's too much work" response.

Thee same way you know a Wikipedia entry is correct... You don't unless you confirm it yourself through established sources. Crowd sourcing has its limits when the information is not based on general...

:D
Perfect, SS!

Like so many legalities, venting is based on intent. Your comment showed intent to release approximately 13 oz of R22 that did not have to be released, however a chiller holding 150# which splits a...

I would only spend extra for the NIST certification if a job required it (something like medical storage or highly specialized food storage) and the job would pay for it.

Consider using locknuts to make sure vibration doesn't cause the hardware to loosen and vibration isolation to limit noise transmitting to the building frame and making everybody unhappy.

Pure Pentane is a component of gasoline and natural gas, is highly flammable compound (class 4) with moderate health effects (class 1 or 2) which is heavier than air and boils about 97 deg F. and I...

Is this the reincarnation of Larmar Mechanical?

If the backup still works :D
Most of my MRI customers are private offices or mobile units and the first device to fail and not be fixed is the backup solenoid and the mobiles don't have domestic...

Liquid leaks would be visible with a positive pressure closed system, but would likely be masked by pipe sweat or hidden under insulation MrHVAC...

If they really want to get freaky, ship the compressors dry and add the oil in the field!

Mc, when you find a MRI imaging chiller that was constructed for service after leaving the factory, I will beleve in miracles! :-) If you really want to have fun though, work on a mobile scanner...

Enough to do what?

It is a generic board used by robot builders and does not plug into the existing harness. You would need to understand how the drive is wired and access the harness and power.
If you work on a...

One of the reasons I decided not to teach part time in the NC community colleges was the attitudes of many of the students... I was not willing to spoon of the class who was there just to mark time...

Guys and gals, may I take a different tact for the assistance of the new techs?

When I first started formally in HVAC, I alreasdy had a technical background and a background in mechanical and...

Can't speak for the general plumbers, but our plumbing division works potable, DWV and also works hydronics and loops right beside our HVAC/R techs. My office's two service and six special projects...

Driver boards are easy to obtain to allow manual operation of stepper motors and not too expensive, Billy. Get one that uses an external power supply and use the unit's power to avoid damage to the...

According to the Mitsubishi and GE technicians I work with on MRI support systems, they prefer not to shut down due to loss of He, however they all know that with no redundant chillers, sometimes...

According to the Mitsubishi and GE technicians I work with on MRI support systems, they prefer not to shut down due to loss of He, however they all know that with no redundant chillers, sometimes...

Colored tissue paper works too. I make a cone out of notebook paper with the bottom around the body of the auto air release and crumple a little tissue paper in the cone. If it is spraying out due...

I first bought the YJ because the mandrill rolls the flare into shape instead of crushing it, resulting in almost no leaks when properly oiled and assembled.

The YJ valve add ons already ship with the adjustable depressors. Use a Schrader tool and screw the depressor out a turn. Make sure somebody hasn't been using the brass acorn caps on the service...

Check around on price. I got my last two for a chiller repair at about $13 each.

Wonder how many ropes I could buy for the cost of one of these systems?

A plastic bag, a cloth to wrap it in and a hammer make crushed ice pretty good. It's not like you need a thousand pounds for an ice slury.

Also on the expansion valve type (TXV/EXV).

Doubt it... If it is a truly sealed system and you are losing pressure, you have leaks. Do you have an expansion tank?

Show me an absolutely clear building code and I'll show you a miracle! :D

Up until about 5 years ago I worked primarily in NC and at that point, most code referred back to the installers discression and the state authority was referring back to the manufacturer's matching,...

Why so low a maximum CO2 level?

I don't have a problem with DIYers trying to fix their property as long as they realize a couple of things:

I have spent my career finding, assembling and assimilating the information and...

The trade only sale limitation has more to do with liability and legality than protecting your market although as my supplier, the parts houses would choose to keep my $500,000 a year in purchases...

I wouldn't do the whole house in Tidewater because plant allergens and moisture would limit the use and effectiveness to almost nothing. Being a little farther north, you might have better results.

Most evap cleaners are designed not to foam to avoid getting out of control, overflowing the pan and wetting the insulation as well as making rinsing easier and more thorough. The chemical smell is...

If I may ask, where is home?

Oh, come on! You know you want to move to the land of fruits and nuts! :-)

If you want to stay in your local area, ask the refrigeration department supervisors at the local food processing, food distribution and pharmacuticals facilities and see who they use for service....

That is the same as asking how an HVAC tech makes 20% more than a troubleshooting electrician, but that was what I found in my area when I was first introduced to the career possibilities. Negotiate...

I wish I could sell at "discounted" prices like that! I would have retired years ago!!! :whistle:

When you walk into a grocery store and the first hing you notice is a chattering evap. motor or in a restaurant and ask how long their ice machine has been acting up because of mixed cube shapes, you...