TomEus
New Member
Hi, we have a hot water in floor radiant heating, powered by a Navien 250/200h boiler. Each zone is using Honeywell VC2714zz11/u actuater to activate the pump.
Previously we have been using the Emerson UP500W thermostats, wired up and setup by the install technician as following:
wires:
C - BLUE
W/E - BLACK
RH - RED
O/B - BROWN
and internally set to:
Outdoor Equipment Configuration: AC2 (Conventional cooling 2)
Indoor Equipment Configuration: EL2 (EL2 - Electric 2)
Reversing Value Position: 2 (Configuration for the default reversingvalve state. This is for the wire in the"O/B" terminal. This is relevant for heatpumps, zone valves, and zone panelsystems)
Obviously this does not match our system but it worked well for years
Now when I wire the T6 Pro the same and set it up correctly for boiler, hot water, 1 stage - the way I think it should be I am getting very strange behavior:
When the heat supposed to turn on and the actuator should open, it continuously opens and closes - never stops. I think this has something to do with the O/B wire, which supposed to be only used for heatpumps but I have no idea how to wire it differently. The manual says only use R 9power), W (Valve) and C (24V) but if I leave the O/B disconnected the actuator will not open at all.
Any suggestions on how to correctly wire these things together and setup correctly, please? I guess replacing a thermostat when the install was not done per the documentation is turning out to be much more complex.
Truly appreciate any help or pointers.
Previously we have been using the Emerson UP500W thermostats, wired up and setup by the install technician as following:
wires:
C - BLUE
W/E - BLACK
RH - RED
O/B - BROWN
and internally set to:
Outdoor Equipment Configuration: AC2 (Conventional cooling 2)
Indoor Equipment Configuration: EL2 (EL2 - Electric 2)
Reversing Value Position: 2 (Configuration for the default reversingvalve state. This is for the wire in the"O/B" terminal. This is relevant for heatpumps, zone valves, and zone panelsystems)
Obviously this does not match our system but it worked well for years
Now when I wire the T6 Pro the same and set it up correctly for boiler, hot water, 1 stage - the way I think it should be I am getting very strange behavior:
When the heat supposed to turn on and the actuator should open, it continuously opens and closes - never stops. I think this has something to do with the O/B wire, which supposed to be only used for heatpumps but I have no idea how to wire it differently. The manual says only use R 9power), W (Valve) and C (24V) but if I leave the O/B disconnected the actuator will not open at all.
Any suggestions on how to correctly wire these things together and setup correctly, please? I guess replacing a thermostat when the install was not done per the documentation is turning out to be much more complex.
Truly appreciate any help or pointers.
