Updated 08/22/2019: The 33ZCRLYBRD and E025-71308201 and E025-71520303 relay boards are now obsolete. If you
are using one of these newer stats, T1070, T1075, E055-71520316, E055-71520317, E055-71520318, or E055-71520319, you can
use the new model relay board E025-71481103.
Please note that it must be used with one of those newer stats. If you
don't have one, you would have to purchase a new stat to go with the
board. If you'd like to provide the model and serial for your current fan coils, we can also send that on to IEC to confirm what will work now.
So, we are handling each relay board order case by case to be sure that we pair the correct relay board with the your thermostat. Use the chat system, or email us your details so we can match you up correctly.
E025-71308201 and E025-71520303 have been replaced by the current model E025-71481103 which is what will be shipped.
Fan Coil Relay Board. Eliminates the requirements to install
individual control relays for fan speeds and line voltage
valves. Interface to either 3 fan speeds or 2 line voltage
valves . Small footprint allows easy installation . Quick
connect 1/4-in. male type crimp lugs for line voltage connections.
Carrier's HVAC Controls 33ZCRLYBRD fan coil relay board
matches to low voltage fan coil thermostats to provide the
line voltage control if low voltage terminals are not on
your fan coil.