500 Mamaroneck Avenue, Harrison, NY 10528
Phone: (914) 835-4484 Fax: (914) 835-4532
4.3.11.1 We will support a radiant floor with the use of a separate relay.
(URC will not stock relay.) A radiant floor with the relay connects like
a conventional system. The only item is that when the call for heat
on the Radiant floor then the FAN “G” should not turn ON. The fan
should only turn on when the 2nd stage is called for.
5Back Panel:
5.1 Below is the total number of connectors that are required to make the
thermostat work with different types of Heating and Cooling.
5.1.1 Please refer to section for different heat and cooling wiring set up.
5.1.1.1 RH: 24 VAC from the heating system
5.1.1.2 RC: 24 VAC from the cooling system.
5.1.1.2.1 Note: If a separate 24 VAC is not supplied to the RC terminal,
you should install a jumper from RH to RC.
5.1.1.3 C: 24 VAC common
5.1.1.4 G: Fan Terminal.
5.1.1.4.1 If you are using a single speed fan, connect it to the “G”
terminal, since the fan speed is set to Low by default.
5.1.1.4.2 On a multi-speed fan, “G” is the lowest speed.
5.1.1.5 W1: 1st stage heat or AUX heat for a heat pump system.
5.1.1.6 W2: 2nd stage heat or 2nd Stage AUX heat for a heat pump.
5.1.1.7 Y1: 1st stage compressor (Air Conditioner)
5.1.1.8 Y2: 2nd stage compressor (Air Conditioner)
5.1.1.9 B: Reversing valve (heat)
5.1.1.10 O: Reversing valve (cool)
5.1.1.11 S+: External Temperature Sensor (Power +).
5.1.1.11.1 Thermostat (THZ-100) will only support one hardwired
Thermostat)
