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I install 5-8 Climatemaster WSHP for the last 10 years on replacement jobs and I have not had hardly any problems as most of you guys write about. Keep in mind Climate master does manufacture 3 way...

Install make-up fan to cancel out the majority of the exhaust fan. Provide outside air on new a/c system and use digital manometer to adjust amount of outside air to dinning room to achieve positive...

mardoman

Research your own replacement compressor and live with the results. You are not the only company in the hvac world with concerns about capacity and selection.Fix the unit and move on.

workingman

I just got the software and used it twice. I didn't try to reconfigure the program on these particular units. I will try to find out and get back to you.

master mechanic

measure your rpm on the blower pulley, take static preasure readings on supply and return duct near ahu. plot readings on manufactures data sheets.
This is not as accurate as a duct traverse but it...

I just purchased service tool V and loaded it to my laptop. It is a kit with a converter box , software disc, and usb cable. I logged on to a 50eko44-5 this morning; it work great. I think the cost...

Does anybody have this software and if so is it user friendly. I need this software so I can access a 50ek-044-6 to check setpoints and troubleshooting of economizer.

My customer has a vav system using this model rooftop unit. I want to know what program can I purchase from carrier to access and view set points , economizer, sensor readings ect. I have a old...

It's seems you have a low voltage problem between the thermostat and low voltage terminal block. Disconnect thermostat wire on both sides ; ring out wires and check each one to ground. You stated...

When I suggested use hot gas bypass as the last stage of capacity it means unload compressor to it's lowest capacity before having hot gas bypass energized. If you do not have capacity reduction with...

I believe you are confussed about the job application. I speculate you have hot gas by pass feeding into the nozzle of the txv. If so this should prevent the coil from freezing up and it should be...

hvacdoctor

The supply and return elbows is causing a major duct restriction especially on a light commercial rooftop unit. It would be difficult to over come that excessive static even with a...

hardwire

Put two L-series Lennox rooftops you won't be sorry.

Honeywell Touchscreen or T-7300

I have installed rooftops units from Carrier , Trane , Lennox. AAon, York,ect. I feel the Lennox L-series is hard to beat. One unit is more economical to install than two; however if space...

Read a Titus, Price,or other grille manufactures catalog.It descibes selection for different applications. Perforated diffuser, slot diffusers and cone diffusers. They all perform differently with...

Buy a magnehelic gauge or digital manometer and learn how radical fittings cause extreme preasure drops.You can not put 10 lbs of potatoes in a 5 lb sack.

I agree, do anything you can to eliminate dog houses. Start pricing your jobs using a roofing contractor. Explain to the customer the advantages.

Perform a duct traverse and acquire total cfm to ensure 350 - 400 cfm per ton is being delivered across cooling coil. If a traverse is to difficult measure external static and blower rpm and plot cfm...

Outside air introduced into the a/c system main purpose is to provide ventalition as well as providing positive preasure inside buildings [in hot humid climates]. It also serves as free cooling...

I second that atmosphere

Yes you can still be a gentlemen, howevever you go ahead with trying to fit a round peg in a square hole.

I had this problem last week on a 60 ton Trane chiller. I found my voltage to be lower than normal. I usually measure around 487v and I was reading 445v along with dirty condensers coils caused my...

CHECK SUPERHEAT ON BOTH TXV'S REFERENCING it's respective suction line. One valve is overfeeding and the other under feeding refrigerant through the coil

Gentlemen, why can't you install a 38ARS009 CONDENSING UNIT RATED AT 8.5 TONS.