HVAC Questions? Ask an HVAC Expert for Answers ASAP
Hello, My name is XXXXX XXXXX I will assist you today
did you unplug the transformer?
let me pull that up, give me a few minutes please.
do you have 2 lead thermostat wire?
yes red and white
in one jacket?
from the transformer, connect the red to transformer and connect to humidistat with red in the 2 lead cable
attach the white wire to the other connection at humidistat.
are there only 2 humidistat terminals?
yes both black and all instructions say to connect a red to each one?
think of the red being the hot wire. we feed it with red (hot) and leave the humidistat with white coming back to the humidifier.
the white is now hot wire back to humidifier.
you have 2 terminals on humidifier?
yes 2 wires only
hum 1 and hum 2 ?
ok...they are both blue and coming from the humidifier solenoid
that white wire from humidity control will connect to one of the blue wires.
are we doing as we go, or do you just want me to finish?
just finish i am writing it down cuz i am not at the house
connect a dirrerent white wire to the common of the transformer and attach the other end to the other blue wire. (the red in this 2 wire cable will not be used)
that was different
this will give you 24 volts when the humidistat calls
do you have any kind of pressure switch that came with system?
yes...it is wired to the humidistat right now
ok, it was pre wired?
no, i wired it as per the instructions. Red to the C and white to the NO then connect red to the black humidistat and connect 2 whites togethter at humidistat
I would do it this way
the red wire from the transformer, connect it through the humidistat
thats all you need
then humidistat will not have power unless the fan is running.
that red to fan switch is the hot, then come out of fan switch to the humidistat.
that may be where the trouble was
what do i do about the press sw?
open that in new browser window please.
see if that makes sense
i did, it is the same diagram i have in the instructions
come out of transformer with hot, run to pressure switch, come out of pressure switch and to humidistat. come out of humidistat and back to the blue wire.
that puts pressure switch in series with humidistat.
if eithr switch is open, humidifier will not come on.
think of these controls as simple light switch, on or off.
dealing with cables may be confusing, as red is hot then it changes to a white wire.
am I making sense?
yes...I am confused what to do with the second wire from the transformer?
white from transformer goes straight to other blue wire.
it is our common (neutral)
ok....but when i use the voltage tester on the transformer both terminals are live
are you reading to ground?
no...it is just a pen type tester and lights up when voltage is present
don't pay attn to that,
So , use the white from transformer to blue at humidifier.
yup got it...
tape off the spare red wire in this cable as it is not used.
think of all other wiring white or red as being of the hot (other side of transformer)
it will be your hot wire, even if color changes.
this is just to save you some wire
you could actually use 1 red wire from device to device
If you need further assistance, just let me know., I will be here for follow up even after accept.
let me know how this works out please,
ok Ron thanks for the help
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Good luck, I think you have it.
did you get it?