HVAC Questions? Ask an HVAC Expert for Answers ASAP
I will continue to wait.
Please find a good one who is very familar with the Amana equipment we have installed.
Thank you and have a good day.
This is Scott, I'll attempt to answer this list of questions the best I can, I am familiar with the Amana brand and the models that you speak of, but you need to know that the Amana and Goodman brands are sold to dealers through different distributorship's throughout the country, and the distributors have access to support techs or factory techs.. so if you get no satisfaction from your dealer, go to the distributor they can get you the help you need, also an on site factory rep visit if need be.
1) The condenser fans should increase in speed, however it's hard to notice, buy without the comfort alert operational (wired in) then you may not have true 2 stage.
2) Depending on the blower profile selected by you and the contractor Yes the CFM changes on the blower and this you should be able to tell.
3)The line set not only do you lose eff. but also capacity, and depending on length and lift it could be as may as 7,000 btu. and take the SEER rating from 16 to 13.5 to 14.
4) the comfort alert lets a technician know about power trips, also through current draw, high press trips and such.
5) I suspect that the 5 ton unit being a Scroll compressor may have the wrong kind of expansion valve installed on it.
6) A start kit may help the current slap in the conduit if that is indeed what is causing the buzzing noise, in my company I sell that kit for $125 which in my area is cheap for that service, but I have seen them as high as $375.00 installed in other areas of the country.
Thank you for the reply.
#1 How can I tell which distrbutor my dealer (contractor) bought the equipment through? I am thinking the only way I am ever going to get the systems running correctly is to have them send out one of their "sharpies" to troobleshoot and repair it. I am hoping thay can back charge my contractor for not installing it properly in the first place. nfortunaly we paid him in full back in 2009 when he installed the system. I was promised a 10 year parts and 5 year labor Waranty.
#2 What is your theory on the expansion valve on the 5 Ton unit being the wrong type? I would think if he installed that one the wrong type he would have installed the 3 ton system the wrong type as well. Both systems (Aspen) evaporator coils are marked that thay came with TXV valves...
Just left the house and met the contractors men. (he needed 13 days to schedule, which of course, did not make us happy). Looks like thay are going to make good on the corrections including installing the correct size line set on the three ton unit under the five year labor warantee, so that's good. They even sent the same guy as foreman that originally installed the project in 2009. (all new units, ducts, vents, electronic air cleaners and UV lights)."Joe" the foreman says there are two valves on each system, one at the condensing unit and one at the evaporator coil. Does this sound right? How can I be sure thay have installed the correct valves? How can I insure proper two stage heating and cooling on each system before thay leave the site (Joe says this will take a few days). I don't think Joe fully understands the opperation of the comfort alert module and nether do I, so any more information on it will be greatly appreciated, particularly how it controlls the compressor. How do we select the correct blower profiles to insure maximum comfort and economy of operation?
Here is a link to the Comfort Alert Manual, It will explain the operation better than I can do by copying and pasting the info which will violates our terms of service but I can give you the link, and you can read the copyrighted information.
We are only concerned with the expansion valves that are on the indoor coils, They need to have a pressure relief bleed port. Keep in mind that Scroll compressors are louder when they shut down than the same capacity reciprocating compressor.
To ensure that the machines are functioning in a 2 stage operation, all you need do is listen to the indoor units. and at both stages check the temperature drop between the supply air and the return air. And be sure the drop stays about the same between stages, even though it is moving more CFM.
As far as heating the furnace control board has a setting that has a timer if 1st stage stays on for 5,10, 15 minutes depending on setting the second stage of heat kicks on both the burner and the blower will pick up speed.
In the installation and operation manual there are tables that tell how to set the dip switches on the control board for low fire heat, high fire heat, low cool, high cool.
You'll be given choices on blower profiles and on and off times, as far as comfort or economy, the system is very economical naturally when you have variable speed systems they are built for comfort. You'll have to decide if you want more Dehumidification, or sensible cooling.
Blower choices will be 350 cfm per ton, 400 cfm per ton, or 450cfm per ton.
I have to assume that your installer knows how to set the blower speeds, by the way the table is also on the blower door.