When we learned it would be necessary to rebuild the curbs to code, we also learned that they are size-specific to the A/C unit.
Our current air conditioning units are over 16 years old. It seemed unwise to go to the expense of rebuilding the curbs for the old units, which may begin to fail at any time. Three new A/C units were installed, replacing the 3.5 ton units with 4 ton units. We now have four 4 ton A/C units on the roof, each with a curb that is bolted right through the roof to the ceiling truss. The new high efficiency, excellent Seer Rating units will certainly be cost-saving while in operation.
A crane was expected early in the afternoon to place the heavy equiptment up on the roof. I missed it by moments, so there are no dramatic photos available. Ed Scobee was kind enough to take a few photos up on the roof, to show you what's going on.
Photo 1 shows one of the new Payne 4 ton A/C units installed today on its curb, which is bolted through the roof. The new unit is then bolted to the curb. (The old curbs were made of wood which was tarred in place.)
Photo 2 shows the inside of the unit, and the compressor.
Photo 3 shows the other side of the unit.
Photo 4 shows one of the 5 new roof drains installed to carry the water off of the roof. Although this one looks like a thimble, it is actually about a foot and a half high.
Photo 5 shows our maintenance man Mike installing the drain pipe through the ceiling, through the library ceiling, to drain out the back of the building, by the fence. In the contract, we agreed that our crew would complete this portion of the job. Total cost of all the curbs and units is right around $11,000.
It is expected that Jean's will be finished today, and our new efficient air conditioning will be functional tonight. The roofing may not be done tomorrow, due to high possibility of rain.
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