Question on 4 ton coil with 5 ton Fan.
I was looking over the Manual J Load for my house this weekend that the Hvac crew left for me.
Is the fan to high speed for coil ?
The fan speed’s on the 5 ton furnace to be installed are variable. 1270 low, 1840 Med -Heat, 2270 Cool- High.
Sensible Latent Split : 75% / 25% . This because I told them Im adding a dehumidifier and to add this to the load calculation.
Does this fan speed of 2270 seem correct going over a 4 ton coil? I have not done any Hvac for while but this does seem a little high to me. I also thought maybe because of the southwest climate, New Mexico. I was told the speed of 2270 would be ok. Now Keep in mind all the Ducts are to being redone with round and square metal, brand new at 0.5 sp.
The house is close to 2200 sqft. Half this house has a lot of glass facing west . You would not believe how hot it get on the west side of this house with no AC. 90 degrees peak from 2-5 pm indoors in the summer. That’s why I told them new duct work all way and kicked in some extra cash for the job to be done right.
The J calculation seems very correct as to all the upgrades insulation. Etc. But the furnace seems to be a little oversized. Im thinking for the fan speeds and the climate conditions
Also I was thinking of maybe looking for furnace with the fan running on 240V Any suggestions ?
The company I hired deals mainly in residential and had no clue as to what furnaces have 240V fans and neither do I for residential. I only hook up the electrical side of the commercial unit those I know.