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Posted by Pete on December 07, 2005 at 15:17:37:
I have a Weil-Mclain boiler (Model CG-5-SPDN)that is run by propane. It feeds three zones (zone valves are all Honeywell V8043F). The wiring has two wires coming from the transformer area panel - to the "end switches" of what I will call ZONE 1's zone valve ( they run from Transfomer spot G to left of "end switch" and from transformer spot R to the right side of end switch".
There are also two wires going from the transformer to the TR (comes from C) and THTR (comes from R) of the ZONE 1 valve.
From the ZONE 1 valve there are wires connecting to end switches of Zone 2 and Zone 3 valves. They actually go from the LEFT connection of Zone 1 to the RIGHT connection of both Zone 2 and 3, and from the RIGHT connection of Zone 1 to the LEFT connection of both Zone 2 and 3 . There are also wires separetely connecting to the THTR and TR of Zone 1 to the respective spots on the Zone 2 and Zone 3 valves. Each of the zones also have their own wires going to and from their separate thermostats.
When system is idle and the Thermostat for either Zone 2 or ZOne 3 call for heat...I hear a quiet "click" from the relay. BUT if the system is idle and heat is called for from ZONE 1 (The zone directly wired to the transformer area) I hear a slightly louder double click "Click-Click".
If the system is not idle, say zone 2 is running and then Zone 1 calls for heat I do not hear the click.
The valve on Zone 1 seems to "work" correctly (as do teh others) but the extra clicking noise makes me wonder if all is well, I tried replacing the relay (no help), I replaced the thermostat (no help) and all connecting wires are tight.
My questions are: 1. Is the "double click" okay (just a fact of life with this setup???)...2. Is the LEFT to RIGHT End Switch wiring okay? And if anyone has suggestions as to what should I look at next (if anything)?