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Update. Called URI tech support and they gave me the Copeland specs to check. Compressor dead. New one on order with 407C. All is well. Thanks for the tips everyone.

Didn't trip on hp, hp is tied in with iol.

I have a commercial crac unit going off on hi head, internal ol. I megged out 1 comp at 500v and got 170 on the 3 legs. I megged out comp at 500v 2 and got upwards around 385 on the legs. Im used to...

I have set all the units up with a 8-10 degree superheat and there is little flashing in the sight glass. Both running 1 unit and then running both units.


I have the p66 set up with an...

They have P66 on fan 1 and temperature controls for fans 2-4. No flooded receiver. I have 27 lieberts, all have receivers and I usually don't have problems with them. Just make sure the liquid is...

Anyone here have experience with Data Air units? I have 4 units that I'm having trouble getting my condensing units to dial in correctly now that we are in the shoulder seasons going into winter. I...

How many FRNQ 3-2/10 amp fuses do you carry? :)

They used to have a product called 'techinacan' but they stopped making it years ago. Now you have to call a guy who has training and the tools in to fix it. :)

Anyone have a recommended belimo replacement for an Elodrive BEP-88F1U. It's a nema 4 out door actuator. I don't see any cross reference tables for Belimo. The unit is only 2 years old, but out of...

I'm replacing a line set for a chiller with remote condenser, and the customer has them run under ground to the condenser. The line set is 120ft of 1-1/8 liq. and 1-5/8 hot gas. We definitely know...

You know. Just plugged them in.

I have a test bench in my garage (shed) and it hums.

I didn't check for super heat, the unit only has regular heat. No sub cooling on that model either. So...

Home owners who do it yourself disasters keep us and fire companies in business. :gah:

No, these units are basic, terminal strip set up. No premierlink, everything is run off the delta controller, which has been problematic and most of the problems come from the software. They are...

Your ac mechanic would be able to answer all your questions in context within the area you live. I know for sure, installing used equipment in my area is a no-no.... But as a home owner, you can...

It's an environmentally friendly air conditioning. I think it's worse when they pull up in a hatchback with gauges in hand.....

I do believe there are freeze stats on the coils, but the original programmer set in 45 as a low temp. they also set in a 5 min. delay in the cgl, (which is set in the software) and the equip. has a...

No, haven't checked it yet. Got the call from them today and checked the BMs from home. The alarm reset itself before I got to look, but I did look at the trends. I don't think it's th h/c, identical...

It's shoulder season up here in NY, but the temps today was 65 and the room had a good load (30 people). Air filters are in descent shape (not too dirty, there's a diff pres. switch). The unit does...

DX, 10 ton.
oat 60 deg,
ret air 73,
unit went into cooling and discharge droped to 45 deg, (not hard to figure out why)

Delta is set to cut comp at 45.

I want to know what average...

What do you normally set frost protection discharge on DAT? I have one set at 45 but is alarming and locking out. Any ideas? Thanks.

It's an older manual and it's not clear on the clearances. Unless you can find something I can't, the model # is 48HJF012-H-671, Carrier. The manual is not with the unit. The other unit is the same...

That's what I figured. I just need to know where else I would find it to support what I need to justify to the client. They need /want a code to quote. I have access to all the nfpa code books, but...

I have a few units that have the exhaust of a 300kbtu 2 stage gas pack ~3 ft across from a 100k btu Economizer inlet. If I take the pre filter off and put my head in the OA plenum, my glasses fog up...

When he calls for a service call and tries to get a warranty, he will be out of luck. Most manufactures will not warranty web purchased equipment.

Then you turn into the crook trying to steal his...

Its there to blow the rats off the food. And permits? Fa git abat it. It's new york!