![]() I also received today outdoor grade shielded CAT5 for the antenna cable. I am going to mount the antennas/amp in an upstairs closet and route the CAT5 antenna cable down the side of the house outdoors, then into the basement. I am going to install the controller near my other weather stuff in the computer/weather room in the basement. The controller will go in the same style NEMA box as the Eastern Voltage Research detector and look similar. I received the GPS module and made up a 2" PVC housing for it with an end cap and short section of pipe. ![]() I was looking for a old thread, but as always when you are looking for something.I'll try to document the bits as I put it together. They pull less power and are very efficiant, but you would need something to control humidity then, so maybe run a hybrid setup WATER-COOLED HEAT EXCHANGERS for a similar size setup. I always find the problem with running AC´s is the power they draw. I have not set up a room this big, but from experience its always better having two units in case one fails, like already mentioned. So you can at least run some lights till things are fixed. Id honestly look into the water cooled heat exchangers, as in the end you dont want to run half the power of your room just for cooling, not forgetting the massive electricity bill that will arouse suspicionĬheck these people out, they also have the yorks you were looking into and the heat exchangers: Also split systems dont leak smell like already mentioned, very important. no trunk and branch, just a 2" water line heading off to some fan coils. They are alot more flexible and require far less ducting. however they are only marginally more efficient, and ONLY when using low velocity low power air handlers. if you want agressive air exchanges and good filtration you will need a powerful blower like what you find in forced air systems. Media air filters and what ever treatment systems you desire require these blowers.Ĭhillers CAN DEHUMIDIFY just fine. you just have to engineer the thing properly. if your chill water is like 60 degrees by the time it reaches your fan coil, you failed at hvac. The biggest problem with chillers is they simply do not make them cheap enough for folks to even consider them for residential construction. To my knowledge, you cannot buy a 5 ton chiller for anywhere near the cost of a 5 con condensing unit There is simply nobody interested in installing them into homes, so the big companies just dont build them. WATER cooled chillers can be much more efficient. ) but im talking about air cooled chillers. ![]() heat pumps freeze because they are using the condensing coil as an evaporator. You should not be freezing your out door unit by running it in a cooling mode. a cold start kit simply allows the unit to operate such that the refrigerant boiling inside your evaporator does not get so cold that it freezes your evaporator coil assembly. With that said, you might actually want a heat pump model. being that when your lighting system is not in use this room will cool off quite quickly in such low temps.Ĭold start equipment varies across all of the manufacturers. you must consult your particular manufacturers equipment documents to find out what parts you need to order with your unit. Most modern ac systems are easily able to handle these cold start kits and might even have knockouts and screw holes drilled ready accept the additional wiring and parts. To retrofit one of these kits into an older job, you pretty much just need to add some sensors to the condensing unit and wire in a relay module that slows down the fan speed such that you get an appropriate super cool. If the condensing unit fan is shitty and old, you would probably just replace the fan motor and caps while you are at it. these things do tend to fail, and a new psc condenser fan motor is like 80 bucks new, caps another 10 bucks maby. Newer jobs can have ecm variable speed motors that automatically drop to quieter and more efficient speeds when the unit is running in a low stage or when the ambients are low. my understanding is these units do not require fan speed intervention for cold starting. Whether or not they have the sensors is another thing.
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