Re: Not giving up just yet - Perhaps a Pro can help?

I tried to locate an internal wiring diagram, but was unsuccessful. In
similar relays the third wire you have would connect to the "TV" terminal



"RBM" <rbm2(remove this)@optonline.net> wrote in message
news:u%nkf.285$Kf4.234@xxxxxxxxxxx
> Jack, I understand your dilemma. The thing is wired in a peculiar fashion.
> Normally a zone valve would be powered by a separate 24 volt transformer.
> One leg of the 24 volts goes directly to the valve and the other leg is
> broken through your series 80 (two wire) thermostat. When the zone valve
> is completely open, there is an auxiliary switch (two red wires) built
> into the zone valve that connect to the "TT" or T-TV terminals in the
> aquastat relay to energize the circulator and burner. In your situation
> they used the transformer built into the aquastat relay, to power the zone
> valve. The infamous third wire you need would have to be connected at the
> aquastat relay to either the T or TV terminal, but without an internal
> wiring diagram of the relay, I can't tell which. Run the third wire and
> try each
>
>
>
> "Jack Benimble" <noname@xxxxxxxxxxxx> wrote in message
> news:irdkf.143330$vw5.134756@xxxxxxxxxxxxxxxxxxxxxxxxx
>> RBM (or anyone who can help):
>>
>> Actually, it seems that the wire from the "W" terminal in the Aquastat
>> is going directly to the thermostat. This is contrary to the wiring
>> diagram, which indicates that the white wire which leads to the
>> thermostat should be connected to the "T" terminal on the Aquastat.
>>
>> But the white wire from the "T" terminal on the Aquastat is connected
>> to a terminal on the motorized valve. (See pictures)
>>
>> Should it be this way? It seems to work, but might you know why they
>> did it this way?
>>
>> The motorized valve is a Honeywell. At the end of this message I have
>> posted links to pictures of the valve and wires I have carefully
>> labeled.
>>
>> You'll notice that there is a second motorized valve that seems to be
>> unused. When I had some repairs done on the boiler, the technician
>> mentioned that the system probably used to have 2 zones, but now both
>> zones work from the one motorized valve... At any rate, all the rooms
>> in my house get heat, so I guess it is working.
>>
>> You suggested: "If your thermostat wires are connected to terminals T
>> and TV and you have a terminal marked W, connect your common wire to
>> it."
>>
>> Is this correct advice? Even though the white wire to the thermostat
>> is also connected to the W terminal? This may not be applicable anyway
>> since my white thermostat wire is connected to the W terminal instead
>> of the T.
>>
>> I just want to know for sure which is the common that I need to run to
>> the thermostat.
>>
>> There is a short red wire (jumper?) between 2 terminals on the bottom
>> of the motorized valve (see pictures). I carefully traced where all
>> the wires lead (with the power shut off, of course) and carefully
>> labeled everything in the pictures.
>>
>> The 5th picture is the electronic schematic of the motorized valve. I
>> included it so you'll know what each terminal on the bottom end switch
>> of the valve is. Some of the text in the diagram was washed out by my
>> camera's flash, so I had to manually replace it in my image editing
>> program.
>>
>> Can you tell me how I should proceed, based on these new pictures?
>>
>> http://server5.theimagehosting.com/image.php?img=Valve1.jpg
>>
>> http://server5.theimagehosting.com/image.php?img=Valve2.jpg
>>
>> http://server5.theimagehosting.com/image.php?img=Valve3.jpg
>>
>> http://server5.theimagehosting.com/image.php?img=Valve4.jpg
>>
>> http://server5.theimagehosting.com/image.php?img=Valve5.jpg
>>
>> If you need anything else, please let me know. I should also mention
>> that I do have a multi-meter in case it can be used to test certain
>> lines...
>>
>> Jack
>
>


.

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