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If the unit has the LCD option then the scale can be set to either °C
or °F via the Scale jumper. See Figure 10. If he unit is also equipped
with the backlight option it can be enabled or disabled via the
Backlight jumper. The LCD display can be calibrated by adjusting
the LCD ADJ pot.
MANUAL OVERRIDE/OCC IN
The optional override switch output is a dry-contact and is available
on the and SWITCH - terminals. It is typically connected
to a low-voltage digital input on the controller to indicate room occupancy or override when the button
is activated.
If the override switch is ordered with the optional LCD, also included is the OCC IN. The OCC IN terminal
is a digital input that controls the OCC segment on the LCD to indicate an occupied condition. It can be
connected to a 0-5V digital signal or a dry contact signal. This is usually an active low input signal and
requires that the OCC IN terminal be shorted to COMMON to activate the input.
LED
The LED is typically used as indication as when manual override has been selected. It is available on the
LED+ and LED- terminals and requires 5 Vdc to power. The LED option is not available when LCD installed
FAN SPEED SWITCH
The 5 position speed fan speed has a resistance output signal on the FAN + and FAN - terminals and has
different resistances for each position 5 positions (Auto, Off, Low, Mid, High).
EXTERNAL JACK
The external jack is internally connected to a 4-pin terminal block labeled 1, 2, 3, 4 and excepts a 4 pin
molex connector for remote communication with the controller. The HHTA-XXX adapter converts the 4-pin
Moles to a 4 pin phone jack connection.
Figure 9
Analog Input
COMMON
Controller
SETPNT -
Analog Input
COMMON
Controller
FAN +
FAN -
Analog Input
COMMON
Controller
SENSOR -
Digital Output (+5 Vdc)
COMMON
Controller
OCC IN
COMMON
Digital Output (+5 Vdc)
COMMON
Controller
LED +
LED -
Digital Input
COMMON
Controller
SWITCH -
Wiring for PCB
Backlight
Figure 10
On
Off
Scale
Fahrenheit
Celsius
IN-GE-TSRCXXX-01 04/20
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