How to wire solenoid valve for totaline humidifier
Bought house and it has a totaline humidifier model p110 sbp2412. It came hooked up and it was working at one time, the filter was used.
The solenoid valve is hooked directly up to the humidity controller.
Red and white wires shown in picture go directly to solenoid valve.
http://imgur.com/1Q0PElB
http://imgur.com/64TNHZF
I have a honeywell thermostat. Here is the Equipment Interface Module.
http://imgur.com/xJqPUMZ
This is what mine looks like..
http://imgur.com/xWDifyt
I should need power wired into this circuit, right? 24 Volts to activate the valve...
The top is what is is now... The bottom is how I think it should be wired? R and C are in the EIM. Is this correct?
http://imgur.com/VwlX43G
Or do I do something with HUM 1 and 2? Are those just used if my thermostat is also a humidistat?
Thank you in advance for any responses. I just don't want to break anything and I get nervous messing with wires...
-Mike
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It sounds like the wiring for the humidifier may not be correct. The solenoid valve, which controls the flow of water to the humidifier, should be wired to the humidistat and the transformer, not to the furnace or fan. It is possible that the bottom wire of the solenoid is connected to the wrong terminal on the transformer or humidistat, or that the top wire is connected to the wrong terminal on the humidistat. I recommend consulting the installation instructions for your specific humidifier model, or consulting a professional HVAC technician to verify the correct wiring.
If humidifier is running but water valve is not clicking open, check the wire connections. If connection is OK, than unplug the humidifier from 120V outlet, disconnect water valve wires and with multimeter check resistivity on the valve coil. If the coil is burned out/open/no resistance, the coil needs to be replaced.
Hello, if you are getting 24 volts to the solenoid valve and it is not working replace it. However, if you are not getting 24 volts check the humidistat, transformer, and wiring.
Hello, in order to turn your humidifier on with the furnace the 120 volts coming from your humidifer you must hook it up to a step down transformer, then the transformer will provide 24 volts to you humidistat and solenoid valve. So you need a wire from the HUM on your control board to transformer primary side and a wire from neutral on the board to primary side of transformer. Then you need low voltage wire from secondary side of transformer to humidistat from humidistat to humidifier.
Hello, In order for the humidifier to turn on and off you need either a sail switch or current sensing relay. A sail switch senses air flow and will turn on the humidifier when the blower motor kicks on and a current sensing relay senses current through the blower motors common wire. If you have either of theses hooked up already and the solenoid valve remains open then the solenoid valve must be replaced.
Could be a couple of things. Transformer can be bad. Try connecting the two wires (usually wired red and white) from the transformer to terminal W and C on the circut board. Your bypassing the transformer and if installed a current sensing relay. The furnace transformer will/should handle the extra load. Turn on the furnace, if still not working, loosen the water supply line at the water solenoid on the humidifier, if water flows out then your supply valve isn't clogged, if no water then try screwing in the needle on the supply valve all the way in then back out. If still no water then the valve is clogged. If all is good then it looks like the water solenoid is bad or wiring to valve/humidifier control. Don't find the controls bad that often. Have fun!
hook up the new transformer to the white (common) from the blower motor, and the lead from the blower motor hooked up to the heat term on the board. (just cut the wires and wire nut all three together)
If you chose to install this with an auxilary transformer. Turn the main power off to the furnace. Mount the transformer on the handi box to the furnace or inside the furnace cabinet. Wire the primary wires from the transformer to the main power coming into the furnace. Connect black to black and white to white. Wire the secondary side of the transformer in "series" with a #50 relay, the humidistat, the solenoid valve and back to the transformer. Determine which wire powers the blower motor for the heating speed. Clamp the #50 relay to the wire.
Good luck
HVAC Teacher
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