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5-WIRE HEATING AND COOLING SYSTEM
WARNING: Remove jumper between terminals Rh and Rc: Both 24
volts returns of the transformers must be connected together in
order to have the fan working with the heating and the cooling
system. *Otherwise, the fan will only work with the cooling system.
*(both transformer supplies, 120/240 vac, must be the same).
n Connect the heating relay to terminal W.
o Connect the cooling relay to terminal Y
p Connect the fan relay to terminal G.
q Connect the 24VAC heating transformer to terminal Rh.
r Connect the 24VAC cooling transformer to terminal Rc.
REMOTE ECONO MODE
Connect the auxiliary system (alarm or domotic system for instance)
between the terminals X (positive) and C (negative). The signal
from those systems must be 12 to 24 VAC or VDC.
FIRST POWER-UP
When power is applied for the first time, the display
must show time and day as well as the ambient
temperature as follows:
If the display is different, press the RESET button.
Use a fine probe such as straightened paper clip to
gently push the RESET button.
Note: Your thermostat is using two (2) “AA” size
batteries to protect its memory against a power failure. Even though
your thermostat will operate without batteries, it is recommended to
replace the batteries when the display is showing “BATT”.
OPERATING MODES
The thermostat has four (4) operating modes: AUTOmatic, MANual,
TIMER ECONO and REMOTE ECONO.
AUTO
The AUTOmatic mode executes in sequence (hourly)
the recorded programs.
Press on the AUTO button. The “PROG” icon and
the running program will be displayed.
Pressing or button displays the tempera-
ture set point of the running program for five (5) seconds.
MAN
The MANual mode allows the user to bypass the pro-
gramming.
Press on the MAN button. The icon will be
displayed.
A first pressing on or displays the MAN
temperature set point. Each subsequent pressing will change
the MAN temperature set point by 0.5°C (1°F).
TIMER ECONO
The TIMER ECONO mode holds the ECONO temper-
ature set point until user predetermined
time and day is reached. Then, the thermostat turns to
AUTOmatic mode.
This operating mode avoids the user to reprogram his
thermostat for a prolonged absence (up to one week)
and allows for maximum savings.
To get into this operating mode, press and hold MAN button for
three (3) seconds.
The icon, the return time and the ECONO temperature set
point will be displayed.
Press DAY, HOUR and MIN keys to specify the return time.
Press or button to specify the ECONO temperature set
point.
REMOTE ECONO
An auxiliary system as your alarm or domotic system for instance,
can turn your thermostat to ECONO mode. The thermostat holds
the ECONO temperature set point as long as the signal of the auxil-
iary system is applied.
The icon is flashing to indicate that the auxiliary signal is
present.
When the auxiliary signal is removed, the thermostat returns to the
previous operating mode (see wiring diagram).
FUNCTION SWITCH
This switch selects the functions: HEAT, COOL, and OFF.
HEAT: Select that position to control the heating system. In
AUTO mode, the thermostat will refer to heating pro-
grams to control the temperature.
COOL: Select that position to control the cooling system. In
AUTO mode, the thermostat will refer to cooling pro-
grams to control the temperature.
OFF: This function shuts off the heating and cooling systems.