The switches in question are end line switches that are used to fire the
boiler. If I were you, I'd replace the entire zone valve(s) with Honeywell
valves which have replaceable parts . Zone valve wiring tends to be a
complicated mess. Let him or someone else do the entire job and ask to
explain the wiring to you. The sequence is something like this: Thermostat
calls for heat, sending 24 volts to it's respective zone valve- when valve
completely opens, it closes end line switch which closes circuit to aquastat
relay on boiler which fires boiler. Boiler runs until thermostat is
satisfied or reaches high limit



"bill" wrote in message
ps.com...
Will try and keep short. Came home to a stone cold house. It being only
second year in house and not even remotely familiar with system i
called in outside help. He said my valve switches were bad, honeywell
recall had expired, and said he could not replace just switches, but
entire valve's. Total over $300 parts alone.

I have access to electronics so i ash him to somehow wire me a bypass
if possible. He did and that works. I have replaced switches but he
wired bypass when i was not looking, and dont want to call him back out
for $85 and a 2 minute job. If im am not mistaken, he wired one
thermostat directly to power.

Link to pic's and explained.

http://home.comcast.net/~janiebeast/bill.htm

Very first pics shows 2 valves the way they are wired NOW after bypass.
Valve on left is only one that had any rewiring done on it, thats
upstairs or main, one on left is downstairs and secondary.

Second pic is close up of left valve

Third pic sideways (sorry) but just to show wiring he did, see spliced
red and white wires

Pics 4 and 5 same. He plugged in his bypass to this transformer. I can
switch these back without problem.

The actual question is i have one read and one white wire to reconnect
to left valve, but not sure where to reconnect, can only guess red wire
goes to bottom middle on value, but if thats correct, where does white
wire go???