Installation Manual

3
In the Côr thermostat programmable configuration, different heating and cooling setpoints and
times are programmable for 4 periods per day or 2 periods per day. Programming can be done for
7 days per week, 5/2 days per week, or 1 day. The programmable thermostat can also be user
configured as a non-programmable thermostat. When operating as non-programmable, the Côr
Thermostat will still have temperature control and in the Côr 7 series, humidity control. The Côr
7 series Thermostat features Touch-N-Go® settings for quick and easy temperature change
without complicated programming schedules.
INSTALLATION CONSIDERATIONS
Power
This Thermostat is powered by 24VAC only. It requires 24VAC (Rh and/or Rc and C terminals)
of the low-voltage transformer to be connected to it for proper operation. It will not operate
without these 2 connections. Rh and Rc are connected via PCB breakout jumper. See Fig. 1. For
applications using two 24VAC transformers, one in the indoor unit and one in the outdoor unit,
connect the common from each to the C terminal. Connect R from the indoor unit to the Rh
terminal. Connect R from the outdoor unit to the Rc terminal. Then, break jumper on the circuit
board (fig. 1). The W and HUM signals are taken from the Rh power and the G signal is taken
from the Rc power. If Thermostat has been installed in a two--transformer application that is
later changed to a single--transformer installation, installer must install a field supplied jumper
between Rc and Rh. Depending on the installation, up to 14 wires may be required. Installation
with the Two-Wire Relay Module is recommended. Only 2 wires are required for connection
between the thermostat on the wall and the Two-Wire Relay Module. These two wires (V+ and
Vg) do not provide ordinary 24VAC. They carry a combination of power and communications
data that is unique to these products.
Fig. 1 -- PCB Breakout Jumper
Models
The Côr 5 and Côr 5C models are temperature control only and the Côr 7 and Côr 7C are
temperature and humidity control. All 4 can be configured for AC or HP, 1 or 2-speed