Instructions input information may generally be be obtained from design documents or field measurements.
Ac unit temperature drop attic duct.
Well there s not a universal fixed temperature your ac should always be blowing.
The result is that air your furnace or ac has already treated is losing energy back into the attic.
Place the thermometer on a vent and leave it in.
An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.
So why put an hvac system up in the attic at all.
Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal.
That has kept the ventilator working but ted surmises the high temperatures are reducing the efficiency of his air conditioning equipment.
As long as the building has not reached its thermostat s set point.
The system should be blowing air that is noticeably cooler than the building s air.
It also means that the air in those ducts is continually exposed to the ambient temperature in the attic.
Ted also has inherited a powered attic ventilator.
Put another into a supply duct as close to the unit as possible.
In addition to making the unit hard to get to for service high attic heat can trigger the high pressure limit switch turning your condenser off.
Going up into an attic and seeing ductwork running every which way is not an uncommon sight.
So even though there s no single ideal temperature you do want a 16 22 f difference from the supply air and return air.
The temperature your ac puts out is relative to the temperature you set on your thermostat.
2009 ashrae hof chapter 4 equation 48 pg 4 21 this calculator estimates the temperature drop or rise of air flowing in a duct.
Summer hasn t even arrived he notes in a post at gba s q a forum and when the temperature outside climbs to more than 95 f the temperature in the attic tops 120 f.
Professionals call this temperature.
To reset the switch you ll need to climb up into.
Well mainly it s a way to save space.
If you ve studied heat transfer at all you may recall that the rate at which heat moves from a warmer to a cooler body depends on the temperature difference which we abbreviate as δt.
Attic hvac systems save space.
Calculates the temperature change of air flowing in a duct reference.
There too unless the supply duct is long uninsulated running in a hot space such as an attic the air temperature at the supply register should be around 55 degrees.
Then allow the ac unit to run at least 15 minutes.
If the temperature in your area rarely gets that hot wait until as hot a day as possible to test.
Put one into a return duct closest to the unit as possible.
Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.
