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Type: Posts; User: swdtech

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  1. Replies
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    Recover the refrigerant and weigh in the factory...

    Recover the refrigerant and weigh in the factory charge. After that you will require some type of heat load to test system properly. It may be best for you to await better conditions should your...
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    You should always expect a professional to be...

    You should always expect a professional to be open and honest with you. Saying that if the contractor cannot for cost reasons perform a manual j prior to an estimate he should inform you of that and...
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    I would recommend a basic Physics book. Within...

    I would recommend a basic Physics book. Within the book you will discover such knowledge as laws of motion, electron theory including the terms conductance, capacitance, electromagnetism, and...
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    Generally package units indoor blower motors...

    Generally package units indoor blower motors operate at higher static pressures than split systems. If this is the case with yours than the trunk line ducting requirements will be best at whatever...
  5. You can find a free app on play or apple called...

    You can find a free app on play or apple called supercool slide rule. It has a ductulator app among many other apps that will allow you to enter dimensions and determine whether the velocity and...
  6. Refrigeration copper is measured across the ...

    Refrigeration copper is measured across the outside dimensions. Plumbing copper is measured across the inside dimensions. So, if you were to place to straight edges up on each side of your copper ...
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    With variable speed technology that comes with...

    With variable speed technology that comes with most ductless systems the system will modulate down to the lowest possible capacity to effectively and efficiently remove the heat and humidity from...
  8. It sounds as if your old air handler had a psc...

    It sounds as if your old air handler had a psc blower motor while your new air handler has a ecm blower motor. The advantage of the ecm motor is that it is capable of increasing its torque when faced...
  9. There is a wesite called Coolcalc that has a...

    There is a wesite called Coolcalc that has a reasonable easy and somewhat accurate load calculating tool. You would need to create an account with them but there is no charge unless you actually need...
  10. Be cautious with multiple ducted mini splits. Of...

    Be cautious with multiple ducted mini splits. Of course there are situations where they are best but always consider the long haul. Each indoor unit should be maintained and from my experience they...
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    You can always wait for the draft to come around.

    You can always wait for the draft to come around.
  12. Thread: Geo opinions

    by swdtech
    Replies
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    604

    Perform a manual j with the existing envelop and...

    Perform a manual j with the existing envelop and then one with the current codes in your area. After that it is only a matter of doing the math. I with above who suggest he install the windows...
  13. Yea, we must all watch out for that eventual heat...

    Yea, we must all watch out for that eventual heat death of the universe!
  14. Replies
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    I live in Jacksonville and if you are even a...

    I live in Jacksonville and if you are even a decent technician you will find work within a week. Not much natural or LP this way but on occasion run into one or the other. Lots of heat pumps, heat...
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    The balance point is a figure to be used in...

    The balance point is a figure to be used in determining when the auxiliary heat strips will be needed to maintain the necessary amount of added energy into your home. If you were to have a balance...
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    The replacements for 22 are a scary thing in our...

    The replacements for 22 are a scary thing in our business. Have seen my best results from the Summit Plus products. Although, they must be inserted by themselves. Most of the drop ins actually lose...
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    Manual j will never steer you wrong when figured...

    Manual j will never steer you wrong when figured correctly. Also, check the static and or do the math with the ductulator.
  18. Replies
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    1,443

    A manual j will provide you with the answer you...

    A manual j will provide you with the answer you are looking for. Not sure how far you would like to go for the answer but there is a decent on line site by the name of coolcalc that can assist you...
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    1,892

    In general an whole house humidifier can assist...

    In general an whole house humidifier can assist in adding humidity in the winter months. The effectiveness of a whole house humidifier will of course be contingent on the actual effectiveness of your...
  20. All of the communicating systems i work on are...

    All of the communicating systems i work on are internally controlled by the internal processors. In defrost the air handler will default to fan speed for heat strip package. If you reconfigure the...
  21. Replies
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    Sticky: Poll: Carrier for me. Although, Bryant is all the same...

    Carrier for me. Although, Bryant is all the same parts with a different paint job. Oh yea, and about 4% less costly.
  22. Replies
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    You can always perform a few test runs and take...

    You can always perform a few test runs and take sc and sh readings. You will it correct quicker than you think.
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    853

    I have known manufacturers to use a high temp...

    I have known manufacturers to use a high temp bake oven. The coils travel through the oven after prep and the convective currents in the oven bake everything evenly. Wish we had a portable bake oven...
  24. Replies
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    1,790

    All the constant torque motors i have worked with...

    All the constant torque motors i have worked with have adjustments on the fan board for the motor module. Try setting the constant setting to high speed and turn your thermostat fan selector to on...
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    I have had much goodness come my way by using...

    I have had much goodness come my way by using Fieldpiece testers all around.
  26. The higher seer units are all using the constant...

    The higher seer units are all using the constant torque motors and mostly eev for metering. With these capabilities at the indoor unit many condensers can work efficiently with only three types of...
  27. Replies
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    Most fan boards for constant torque motors have...

    Most fan boards for constant torque motors have adjustable settings on them. One should allow to use a selector for fan speed when you select ON instead of AUTO. Place your jumber on the highest...
  28. Replies
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    You can push it through at a 1497 fpm velocity...

    You can push it through at a 1497 fpm velocity and 0.24 sp. Of course that not counting the return sp for a necessary total.
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    If our industry is to follow the corporate suit...

    If our industry is to follow the corporate suit of other industries, such as the software sector, our customers our probably in for it. Refrigerant will be akin to an operating system like windows....
  30. Thread: Too cold

    by swdtech
    Replies
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    2,591

    Not really much of that here about. I moved to...

    Not really much of that here about. I moved to Florida in the late 80's so have not experienced the negative temperatures since then. Oh, I did need to actually wear long pants to work yesterday...
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    Just a thought but since it takes a while for the...

    Just a thought but since it takes a while for the discharge pressure to rise are you sure that the indoor blower is operating during the rise. If the blower shuts down the pressure will sky rocket...
  32. Replies
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    It is unfortunate when an component stops...

    It is unfortunate when an component stops operation after we have addressed any issue. Over the years i have had many components perform badly after a check out or even a repair. Of course not every...
  33. If you would like to go a bit further you could...

    If you would like to go a bit further you could install a wifi thermostat and link to it through an application on your phone. Should they get out of line at the actual thermostat yours will not only...
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    according to the EPA guidelines all refrigerant...

    according to the EPA guidelines all refrigerant must be in approved containers. So, if it is an approved container, ie.. recovery cylinder you are good.
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    Be cautious around the UV lights. We have has...

    Be cautious around the UV lights. We have has several of our newer techs find themselves with flash burn by "adverting their eyes " instead of disconnecting the UV light while performing pm's. The...
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    The code is still R6 in Florida. Here is a link...

    The code is still R6 in Florida. Here is a link to the code book if you would like a reference point. Good luck.

    https://codes.iccsafe.org/content/FMC2017/chapter-6-duct-systems
  37. Replies
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    Goodman has barely changed their technology in...

    Goodman has barely changed their technology in their base models for many years. Their technology in their upper tier equipment, in my opinion is nominal at best. I am not a ruud dealer personally...
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    You could attempt to physically remove the coil...

    You could attempt to physically remove the coil and if it will not go into heating then the valve is stuck in cooling and it will need to be replaced. Even as it is rare that they go bad it does...
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    You stated the heating system was a hydronic...

    You stated the heating system was a hydronic system. Is the system a separate boiler with radiators or in line heat exchanger mounted in the air conditioning ducting. if it is the former you should...
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    It is unfortunate that franchises such as One...

    It is unfortunate that franchises such as One Hour blight our industry. I am not one to chat unknowingly about another company but i have personally experienced customers whom have called the local...
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    Should this noise arisen only after the install...

    Should this noise arisen only after the install of the zoning system it may be safe to assume the noise is caused by the ducting. Have you taken static reading at the inlet and outlet plenums with...
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    I am with AR. UV lights work best at the inlet of...

    I am with AR. UV lights work best at the inlet of the evaporator. While there are several manufacturers whom offer a dual bulb set up I personally do not like the upper bulb as it generally wrecks...
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    Either on the outdoor units control panel or a...

    Either on the outdoor units control panel or a website from the manufacturer you can locate a charging chart for the heating mode. Generally it is based on the indoor and out door ambient dry bulb...
  44. Thread: Aluminum Coils

    by swdtech
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    773

    I have been working in North Florida for several...

    I have been working in North Florida for several decades. Prior to 410a systems i had minimal evaporator coil leaks. Over the previous 5-8 years i've personally located dozens of evaporator coil...
  45. Have you tried a quick field test out of the unit...

    Have you tried a quick field test out of the unit with necessary components. Ignition modules operate at high high voltages and of course low currents. Even small anomalies in the ceramic around the...
  46. Replies
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    Honeywell dampers generally default open. So,...

    Honeywell dampers generally default open. So, when you call for one floor and not the other the other damper should power close. The temperature sensor on the Honeywell zone board are prone to...
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    JC , Perform a static pressure check at your unit...

    JC , Perform a static pressure check at your unit with and without the filter. The static meters these days are easy to use and accurate enough to diagnose the majority of ducting issues. Also...
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    534

    Along with checking the sub cooling and super...

    Along with checking the sub cooling and super heat settings check the temperature split (delta t) at the air handler without the heat strips activated. Should the delta t be low then you may have a...
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    Generally voltage drop is caused by some type of...

    Generally voltage drop is caused by some type of power consumption. Probably not a complete short to ground but at least one electrical component in the system is consuming excessive power. Try to...
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