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Terminology

Brazing: The filler metal melts and joins the piping similar to soldering but at higher temperatures and tensile strength
Welding: The filler metal melts as does the piping metal, as...

It takes a man to admit when he makes a mistake. It takes a better man to truly apologize when he does.
You sir did both. I tip my hat to you.
Unfortunately this is now the exception and not the...

Condensing unit should have been turned 90 degrees. I/O manual calls for 30" of clearance for service ...

Thanks for the info

The air handlers have a hot water coil for heating, and a separate chilled water coil for cooling. The chilled water loop temps should be ?

What are target CWS and CWR temps for a system in a resi condo, bout 150 units

I recall PVC venting being a ground shaking event. From 400 degree stack temps to 110 was mind boggling @ that time.

As others have said tho, many problems with the guniea pigs that first came...

When using Alpha's , I also use Caleffi Dirt-Mag for protection of the circ...

I graduated from there in '81, associates in RHAC @ time. They didn't offer a engineering degree then.
I have made a living in the hvac trade ever since. One of the best moves I made in my life....

Many Caleffi inverted flare installations.
All caleffi products are high quality

Legionella conditions would steer me clear of that option

My one and only son... We named
Dane. Had we been blessed with another...I liked Rial
Congrats with your family... That's what life is all about

It is a closed loop, non pressurized flow cntr. The flow cntr. was clear, but smelled heavy of methenol?
Slinky piping horizontally. The sensor is attached to coaxial

I have a Bosch 5 ton water to air, tripped on freeze stat. Reset it, some #
gpm=15 air split=18 water split=6.9
suction=74psi ( r~419 ) superheat=12 flow center circs 1.3 amps
wtr in=35.9 wtr...

That gas valve...looks like a combination vlv. Those came out
in the 60's

Just get a uncoiler thats used for PEX tubing. There a many variations, the better ones have wheels, and take apart easily

Yes exactly... The water zone is probably controlled by a wall t`stat, that operates the circ pump and fires the burner, BUT LIMITS the burner to say 175 degrees.
This way the rest of the house...

I would think the aqua stat is there to limit the boiler from steaming...

I have had the same thing on carrier equipment. ... don't know if Lennox uses a similar hi limit
pull hi limit and check
good luck

test

Looks like pulling blower assembly from that won't be fun...

Yes record snow amounts here too.
Temps finally forecast to climb above freezing in the coming days.

I for one have seen enough frozen pipes
for this season

Pipe it to the manufacturer specs. Be ready willing and able to thread 2.5" andor 3"... that is if you want it to operate properly

Pulling the blower assembly looks like apain in the vein...

If the pilot is lit then the pile is ok. Try temporarily bypassing the control wiring. All connections must be clean and tight. Never leave controls bypassed after trouble shooting

Good luck....

Good info. thank you...

What instruments do you use to check mfd. on run caps ?

The tail gives it away...

Opossum

I must say, I ALWAYS clean flame sensors with sand cloth. I have never had issues with said flame sensors ... ever due to sand cloth cleaning...


Stay safe out there bros.

I use wire ties, with a " twister-tool". Yes, hands and knees.

Yes there is a better way...


I use 2" DOW blue board, and I use 6"x6" # 10 wire mesh. You can lay out tubing percisely, sure, it takes more time, but that's how I roll...


MERRY CHRISTMAS

If your talkin' bout removing a bolt... left hand drills and screw extractors { easy outs } do sometimes work. Striaght holes well centered are the ticket. Another way many of us use is to weld a...

Codes everywhere require that, the heating equipment be on it's own desingnated circuit.
If half of the house is also on heating circ. " anything goes " as far as what the cause could be.

You...

Yeah... what I 've come to realize, as I grown older... Heights scare me ... well, sometimes.
I go by jobs, and remember when, I was standing on top of that chimmney, poke in' a flue liner down. ...

As flange stated, Lower both cut in and cut out. 0 psi cut in, 2 psi out. If you want to really control a steamer, try a vapor-stat, senses in oz. of pressure! I would verify safe operation of...

Thats how I heat my house. Load firebox, when stove temp. is established fan switch energizes a double pole relay. One contact starts wood stove blower mtr. The other starts furnace blower. Tie...

I've seen auto air vents misapplied on the 3rd floor of a building that were sucking air into the system !

If your working in a multi-story building, make sure you have about 5 psi at the...

I'm in Mi. My slow time is ALWAYS late April, May. Normally the temps. require little to no heat, and NO A/C. I tell my customers that have marginal equipment ( during heating season ) call me in...

I'm going back to the job location next week, I'll let ya' know how it went...

Good info. Jim and klok-mkr.

System users want to replace programable t'stat with non-pro. type.
I appreciate the info. time for me to read up and continue my edu. 30+ years in the trenches, and...

I'm working on a Trane rooftop YHCO36AURMAOBEOOO. Unit has a Trane t'stat, with 6 wires. Wires on terminals: 7,8,9,11,12, and 14. Of course there is not a wiring diagram in unit. Any chance...

Every time I hear our burner fire up, { L.P. furnace } I think , " I should clean and check that "... that was like, 5 years ago. I call it, a experiment of system abuse:bump:

1. Intake piping

2. Exhaust piping

3. Condensate drain piping

Not a fan...

Lennox won't sell parts to non-dealers, they make a good product, but due to their policies, I walk ... why jump thru hoops when there's plenty of other stuff to work on out there...

Wire units using priority. You can keep flue piping size to a minimum. Allowing only one unit to run at a time.

I have two;

Went on the days last call, No Heat, I find the oil tank in basement empty . I go upstairs and tell home owner "your oil tank is empty". She says to me condescending "Do you knowing...

What process did you use to clean them ?

Trion "AIR BEAR", media-type 20"x25"x5". Simple, easy change, 1 or 2 per year is good for most any resi. application

What gets me is when they say ...turn left at xxx rd. WELL... if I'm coming from the North should I turn left ? Or do you mean turn left from the South ?

Women that know North, South, East and...

Any pipe that traverses the floor is a trip hazard.

Any pipe that traverses the floor with a cover over it, is a trip hazard.

A condensate pump will be his hero.