Duct Booster Install on Relay
#1
09-19-18, 09:24 PM
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Duct Booster Install on Relay
I am trying to install a duct booster that will turn on when the AC blower turns on. I know I'll have to use a relay, but I'm not sure how to wire it to my control board. I've had a little bit of experience in electrical, I've installed new breakers in my home, outlets, lighting, ect. But nothing like this. The control board is a pcbfm131 rev d. Here is the wiring diagram that was in the unit. The duct booster is a Panasonic Whisperline FV-40NLF1, I believe the amp draw is 1.1. Any help would be greatly appreciated!
#2
09-19-18, 10:54 PM
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Welcome to the forums.
I use a setup like in the picture. The RIB is a 24vac coil relay that is controlled from the furnace. Mounted to a standard 4" box you can use a power cord for 120vac in and put a receptacle in a 4" square plate right on the face of the box. Makes for a neat and safe job. This would be installed near the booster and the 24v wiring gets run to the furnace. If you decide to go this way I can give you further instruction in wiring.
Example of RIB relay
I use a setup like in the picture. The RIB is a 24vac coil relay that is controlled from the furnace. Mounted to a standard 4" box you can use a power cord for 120vac in and put a receptacle in a 4" square plate right on the face of the box. Makes for a neat and safe job. This would be installed near the booster and the 24v wiring gets run to the furnace. If you decide to go this way I can give you further instruction in wiring.
Example of RIB relay
#4
09-20-18, 11:48 AM
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#5
09-20-18, 05:57 PM
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Yep, ordered it. Should be here sat. Now I'll just have to get it wired up correctly when it comes in. I'm super pumped lol.
#6
09-21-18, 11:32 AM
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#7
09-24-18, 04:07 PM
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I'm pretty sure I hooked it up right, but to be sure, what wire goes to c, and what wire goes to g? As of now, it's not turning on. Right now I have the white and yellow wire to c, and the whatever blue to g.
#8
09-24-18, 04:12 PM
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It's AC..... so there is no polarity. The red LED will come on when the relay sees 24vAC.
The G terminal only becomes live when the blower is running.
You can move the G wire to R as a test.
The G terminal only becomes live when the blower is running.
You can move the G wire to R as a test.
#10
09-24-18, 04:31 PM
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#11
09-24-18, 05:35 PM
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The light def comes on, but the booster does not. I double checked the wiring there and it all looks good. IllI check it out again tomorrow.
#12
09-24-18, 05:41 PM
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#13
09-28-18, 11:27 AM
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Question, the Blu wire from the switch/ relay, you have an x on it, and the white/black.....that means they are not used?
#14
09-28-18, 06:10 PM
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Yes.... that is correct. The white/black is for activating that relay with 120vAC and the blue wire is for normally closed switch operation. Neither you want.
(2) Currently once a month I pour bleach down the 3/4" pipe on the left where you see a cap, to clean the condensate line. The tech said instead of pouring into that, remove the float switch on the right side, and pour the bleach down there, which will cause the bleach to run through the inside of the air handler, cleaning everything out.
(3) Instead of using bleach to clean the condensate line, use the coil cleaner products sold at the big box stores because that will clean the coil as I pour it into the pipe where the float switch is.
(4) Right now the p-trap for the condensate line is on the outside. There is no condensate pump. I put it outside because I can take it apart occasionally to clean it if algae or gunk builds up inside it. The tech said it's much better to move the p-trap inside as close to the air handler unit as possible. I asked why but he can't give me a reason. Is it true? I am in South Florida so it's not like water inside the trap will freeze.
