No heat/hot water on new install by others

adamkirwan1994

Taco 506 circ zone board- found system wiring like this on arrival. The thermostat terminals have no voltage on board but have 24 v on end switch. The indirect aquastat wiring also seems incorrect but wanted to get some insight from more experienced technicians. When adding 24v from separate source to t stat terminals it activates the circs/zones. (Indirect on zone 6)

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Photos for reference.

pedmec

Just to clarify are you using zone valves?

adamkirwan1994

he has circulators

tcassano87

no zones turn on at all?

Have to checked the Fuse on the Relay Box?

Is the In-Direct wired to the Taco Relay or the hyrdostat? Because wiring would be different for both

adamkirwan1994

fuses all fine, indirect control wired to zone 6 on board, I included pictures in post as well. They used a jumper wire on the indirect control instead of a dedicated 24v which is not an option in the manual

adamkirwan1994

also no idea why they wired the white wire to the C terminal on all heat zones

Jamie Hall

Can you make a circuit diagram of how it is wired now?