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I have a customer who has a Bosch system with two indoor heads. One of the indoor coils has strong and cold air blowing from the righthand end of the coil. I can't see any obstruction on the left...

I have a customer who is a small animal vet clinic. They have a washroom within the building where dogs are bathed. The wash water runs out of the wash area through an opening between the side wall...

No, this is not in a hazardous area. The units are for control rooms; truck/train unloading room and truck loading room.

I have feed mill customer that has several 1.5-2 ton mini-split heat pumps. The outside dusty environment is causing severe operational problems with their performance. They were installed when the...

I have been using the Belimo damper actuators for several years for zoning. I am seeing rusting problems with the hardware end of these. It is difficult to insulate this area, hence condensation in...

WaterFurnace geo hp's don't use water pressure switches, they use thermistors to sense line temperatures. With this being a two-stage hp, is it the old Bristol TS compressor, or a Copeland two-stage...

If both systems were in heating mode and water flow light came on, this means that temperature of water/refrigerant hx has reached less than 15 deg for closed loop or 30 deg for open loop. Could be...

Looking at unit name plate and original? motor, they both appear to be '98 vintage by serial numbers. Not familiar with Concord brand, but I think it is made by the Allied arm of Lennox...

Compressor is Trane recip. If high discharge, why high low pressure

This is an '03 vintage package heat pump. The operating pressures, SH, and SC are off the chart.

On the initial service call, they all were within normal ranges (early in day with lower ambient...

I am attaching a picture of a device in this air dryer that I posted about in the previous post. It is a water "dump" valve or sensor of some kind. As can be seen there is a small control cable...

Copeland quit making that compressor some time ago, plus the refrigerant is R-22--HIGH DOLLARS. Your best bet is to contact your area WaterFurnace dealer and have a current vintage Series 5, or...

Ok, posting in this section about an Arrow Pneumatics Compressed Air Dryer (that I put in Refrigeration and Ice Making). I have a customer who has this brand air dryer. It has not been used in...

I have a customer who has one of these units. Arrow Pneumatics says that it is over 15 years old and they do not support or have any info on them now. There is not any info in the "fill in the...

If it's the Copeland two speed (ATVO48), no more available. Copeland stopped making them. Either change to single speed 4ton compressor or replace with new Series 5 WaterFurnace.

Don't know any pricing, yet. Will be going to service school on them next week in Mesquite, TX. Hate to go in mid July, but will be closest school to me as others will require flying vs 4 hour drive.

Just got through cleaning a Trane 2 ton RTU condenser coil. Used NuBrite in a pump up sprayer to foam coil and then CJ-95 to wash. It took three tanks of water to get most of debris out of coil (had...

How deep a micron level could one expect to reach after doing a compressor replacement for say: (1) a system up to 5 tons and (2) a system of 10 ton capacity? From what I've experienced is that the...

Would like to go this year. But it will be the first that I've missed since signing on as a WF dealer. Went to a Service and Install school last Sept that included the Aurora training. Got the AID...

The variable speed compressor heatpump that WF had at the dealer meeting last year (2011) was very quiet. It was sitting out in the open in a hallway. They would vary the compressor speed up and down...

Trane did buy the Command Aire line several years back. They have dropped it for residential. Now they are rebranding a WF unit for residential. Just hope WF dosen't switch to the Trane plastic air...

It is just the control panel only. The dampers are purchased separately as to size, configuration, and wiring: two wire or three wire.

Rodney, several questions. In the picture showing the trunk insulated with foam, why were the runouts insulated with foil FG? The can lights that were foamed, were they ICAT? What foam product and...

If the indoor coil problem is stemming from VOC's, then what device is available to accurately determine what VOC's are present?

I have had many repeat E coil leaks in the geothermal hp's that I've installed since 2001 (when the manufacturer brought out the R-410A units). The manufacturer is now on about the fourth E coil...

First of all, how do you check CURRANT with a VOLTMETER????????

For the first situation, I would say that the house has a loose neutral and that the VOLTAGE is fluctuating due to varing...

Very good installation. I make a "box" out of 2x10's or 12's with an internal 2x4 stiffner and a piece of plywood on top to set my WF units on. That way you don't have to lay on the floor to service!...

I recently bought a pair from JStone. Used them on a job yesterday and couldn't pull a vacuum below 700mc. Put N2 pressure on the system and one of the core remover tools was LEAKING! Guess that I...

What will SC tell you with piston metering? Didn't check WB indoor temp.

Didn't check for TXV. Most of the Goodman installers in this area don't know what a TXV is!!!

Just got through with a service call on a Goodman heat pump system. Customer has lived in house about a year and has had someone else servicing the system. They put UV dye in the system and told the...

If the residue is only on the copper, then I would say that it was a chemical reaction with sulfur/sulfides in the air. This material is somewhat shiny in appearance and will flake off the copper...

I had to adjust the TXV on a new install last week. It was a XP14-036/CBX27UH-036 system. With the correct SC, the SH was in the mid 20's. Did a pump down, removed the bottom cap and opened the...

Sounds like the flow center is installed backwards, the "out" side is connected to the "water in" piping to the hp's. Do the units have check valves installed in the piping between the hp's and the...

I'll ask this question here. Anyone have any experience with these valves. Can they be repaired if they are stuck open or won't open? If one is faulty, what's best approach--replace with new valve or...

Ok, so you have a 3 T system? At 1000'/ton of loop, that's twice what I normally use. Most of my loops are 3/4". Your piping is is 500' rolls? I get my piping from a supplier with specs the same as...

TC,

What loop sizing program do you use and what size pipe for loops? I'm in SW Arkansas and we are having the same hot dry weather (from radar pix just a few minutes ago, looks like we might get...

The weakest part of the DC's is the probe wire clamp in the plug. Look at this post: hvac-talk.com/vbbbshowthread.php?t=776942 ((or go to page two of this section and look at hvacrmedic's post on...

ZT, are you using the GoPayment with Quick Books? How is it working for you? Do you have a swipe device or just key in CC info? How does one go about getting customer to sign a printed receipt like...

Don't know that I have a link to the flyer, but should have the flyer in my office. What are you looking for?

Ok, I'll check that out. I didn't know that it came with that warranty.

ChaseAir,

If the heat mode TXV "clogged" then it sounds like the installers took short cuts in their brazing process of installing the split systems. If nitrogen is not purged through the lines...

I'll second WaterFurnace's new products!!! I would sure like to get the new Envision variable to replace the Envision two stage in my office. I know that it would be a lot quieter. Even though the...

Bet the installer didn't run a [B]Manual J[B]!!!!!!!!!!!!!!

Does anyone know if repair kits (parts) are available for these manifolds? I bought these with the DG-1200 mounted a couple of years ago. I've looked on the YJ website for such parts, but don't see...

Where did you get the new plug that mates with the DG 1250? The ultra fine wires broke inside of mine where the red comprssion sleeve compressed too much. I operated on it and got it repaired, but...

Great video, slc. I have the same detector, but don't have the extension probe. Did it come with the new kit? I use a set of Sony "Walkman" earbud headphones and listen for a sound like "bacon...

I have this manifold with the D-C 1250. I've noticed that when pulling a vacuum, if I open the low or high side ports too far that the micron level starts rising indicating a leak. Has anyone with...

It is a bit overpriced for just two pieces of metal. However, when you need to use it, it sure comes in handy!! Too bad that there isn't a place to put the two pieces in the bender box.

Check out the C&D #5050 ,or the 2060 core depressor ([url]www.cdvalve.com). Go to Products, then Tools and look through the three pages. I use them (the 5050) for the high pressure port all the time....