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is this still for sale? Johnnyb. Johnny, put your phone number in your profile please.

I thought I would throw this into the mix since we are talking about grounding which is different from bonding and I think bonding is more improtant than grounding . To me earth ground is only...

2 boards. one is failing. which one? inputs or outputs? usually outputs or triac . i can test triac .

need the algorythm for the electronic control boards

Does anyone have the technical info on the algorithm for the Zoneline PTAC s ? Especially for electric resistance heating. Trying to determine which control board is at fault for no power to...

When troubleshooting it is not a good idea to ground one lead and test other points unless you are sure that one side of the control circuit is well grounded and I still NEVER do it as you can make...

The reason that some manufacturers dont bond the control transformer to ground is that they haven't figured out that they are supposed to . It is required by NEC except in special applications for...

what is meant by that comment about teaching you to be abetter tech? ALL neutrals are bonded or they are not neutrals. most important connection in the world is the neutral to ground bond.

it sounds to me like you are checking voltage to ground. If so : The only time to do that is to make sure that the power is off. Troubleshooting should be done by checking across the load line to...

I have not seen that happen . I have two units of my own installs that have no deterioration after 11 years with the A coil ahead of the furnace.

I have seen the indoor coil installed per factory instructions on the inlet side of the furnace so that the auxiliary heat which is the gas furnace can be run simeoultaneously with the heatpump.

Those scroll check valve s in Copelands compressors don't work!!!

Hi Guys, My customer told me that he had reversed a PTAC blower motor by switching the two cap leads. I told him that that wasn't possible ...as you said they aren't polarized. So I consulted my...

I would like to contribute to the topic....
1. Look out for 3 phase grounded leg systems. which give phase to phase voltage from either of two phases to ground. IE: 480 3 phase delta connected...

Well at coffee break I was reading the instructions on the wire nut package and it said that pre twisting the wire was not necessary. We had never twisted the wires much before....some guys...

Please don't think I'm a smart as... even though I am sometimes... I would like to point out a couple of things here. : An infinite switch is not much good for regulating a temperature if there...

I love the sman. but sometimes I want no hose. I thought
the test would take care of that. It is junk as it comes out of the box
. I'll try that Measure Quick app.

My experience with the Testo smart probes is that they are not smart, the probes work well but the app sucks. I have seen one of the pressure probes turn itself on while lying in a table. I have...

From my previous clarification : ( I want to preheat to whatever temperature that I can achieve)

I'm sure I could not get to 180 or probably even 120 but if I could get to 100 it would represent...

I din't realize that a post had to be recent to comment on it.

I don't have a problem other than I was curious to what the answer was to this old problem. I still am. I thought that the original...

sSorry It was late last night....I want to preheat to whatever temperature that I can achieve. Not necessarily 410a but I suppose that is probably the only practical choice. Also it wouldn't...

well this thread is only 6 years old or so .......did you ver figure this out? You said the pilot flame is ok after the sparking stops? You bypassed the controls and gave the pv full voltage and...

I'm not certified or even have a plumbers license but I have repaired many of these with the kits and have decided that most of them can be repaired just by cleaning them out and silicone greasing...

Your post is old but ...Yes the label can be wrong , the factory can be wrong , as I have seen it and someone else proved them wrong and they changed their manual for the equipment.

Easy to get fooled but as soon as you saw the voltage go away when connected told you that it was phantom. Hind sight is 20/20. that light bulb idea is a bit funky unless you put the right light...

Yep bunny is correct . all air heat pumps have some way of changing the metering device to match the load in the heating vs cooling characteristics of the coils and loads.

I need help here ..ASAP...
This is a request for engineering help.
I want to design and build a (Geo) or (Water source) heat pump that is going to get heat from cow manure and urine and heat water...

so easy today...internet , cell phones, internet on your cell phone, but most of all after you give new equi[pment that you have ner=ver seen the once over and you are about to get...

if they
got -7 with cap tube wouldn't i want to try to get the same 7 with the valve as well ?
I checked for the heater being on they weren't on . I cut the valve back and left and ill go...

low charge or low air flow due to ...?????dirt,capacitor,motor,curtains blocking evaporator,stat set too low,

Carrier and several others use a double layer condenser coil. My bet is that there is dirt stuck between the two coils. you have to separate the layers to clean it out . water from a hose should do...

Perlic mn 8365aul or6365aul ser no 464776
had been cap tube but someone has converted it to TXV as I would also due to POE clogging cap tube after dirty condenser overheat one time. ...

I see that in the Johnstone catalogue (which is online), that each evap has a different btuh rating for different td's. The higher the td , the higher the btuh rating of the coil.
HO do you create a...

yes I did a combustion test , tomorrow i'll post those results as I do nto knw which memory slot that they are in in my tester. I'll have to go read them offf the boiler and i'll take another test....

I have run out of technical ability here ....

Raypak... E624 T boiler...old atmospheric boiler...steel burners...copper fin tube heat exchanger ...10 or 12 inch flue up 4 feet , 90 degree 3 ft...

About 15 years ago (they are out of business now)I saw a wicooler running and working with a compressor that was belt driven and had a fan on the motor right after the drive pulley that blew air...

I can Has ? Sorry no offense here but I wpu;d never spray wd 40 into any bearings . It is not a lube . It wpu;d pn;y wash put any lube thea twas still there. It gets sticky after a very short...

What is waste pool water ? How can you see the water side of the evaporator in a heating application ? Isn't the water being pumped through the heat exchanger ?

you can get that in writing from the manufacturer of the belts.

look out for testers with expensive sensors that need replaced every 2 years and have to be sent back to the factory for replacement and calibration. get one that has long life sensors and can be...

Boy , I'm no expert on giant systems like this but.... I'd think 55 degree supply air and space temp at 68 - 70.
Is this heating only ? I was thinking 55 for cooling . What kind of controller...

didn't check the amperage , good vac old mostly virgin r22 about 75%, no oil removed, I have heard of oil slugging at the compressor and wondered if the evap could be loaded w oil but when I tapped...

update here: coil is not perfectly clean but can see light through it, a;pprox. 20 deg sub cool, 35 + superheat , 85-95 deg return,, , cap tubes mentioned, 160 to 240 head p on fan cycle...

It could be that there is low voltage on the control circuit or that the coil is wired for the wrong control voltage. Many times you can have this and the coil will hold but not pull in without...

Any ideas what restriction I could have?
6 ton Armstrong RTU
replaced the Scroll compressor with and exact replacement andnow have 10 -2o psig suction.
Replaced the (new) drier and the cap...

This is probably a fuel gas code issue and has to do with the size of the regulator and size of the gas lines supplying it. Call The manufacturer for easier answer. The tech guy there is just...

motor starter is just as said previously here : It is a contatctor with an overload relay mechanism that must be wired correctly....the protection only works if the control circuit is wired...

Upon delivery of the Hilmore dual digital not mechanical gauges ...the delivery man , muy usual counter man said;" We'll give you new seals because every one who has bought these gauges ahas had...

if the circuit breaker (you said it was a 50 amp ) is the correct breaker for the wire feeding the equipment and it does not exceed teh max fuse listed on the equipment, then you do not need another...

What are you trying to do ?
What do you mean by "would it affect the waveguide "?