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Rooftop Thermostat Controller
Specification and Installation Instructions
www.neptronic.com
Page | 3
Mounting Instructions
CAUTION: Remove power to avoid a risk of malfunction.
A. Remove the captive screw that’s holding the base and the front cover of the unit together.
B. Lift the front cover of the unit to separate it from the base.
C. Pull all wires through the holes in the base.
D. Secure the base to the wall using wall anchors and screws (supplied). Make the appropriate connections.
E. Mount the control module on the base and secure using the screw.
Programming Mode
The Mode Selector DIP switch (DS1) must be set to the “ON” position (Programming Mode). Refer to wiring on page 2. To exit, set the
DIP switch back to the “OFF” position (Operation Mode). All changes will be saved.
Symbols used in this Manual
Temperature
Heating
Cooling
Fan
Schedule Mode
Timer/clock
W1 = Heating Stage 1
W2 = Heating Stage 2
Y1 = Cooling Stage 1
Y2 = Cooling Stage 2
User Control
1.
“Inside Temp Sensor Offset”
Range:
Offset:
Increment:
10 to 40ºC
[50 to 104ºF]
Max. ± 5ºC
0.1ºC
[0.2ºF]
Compare the displayed temperature reading with a known value from a thermometer. To offset or calibrate the sensor, use the
arrows key to set the desired temperature reading. This is useful for thermostats installed in areas where the temperature read is
slightly different than the room’s actual temperature. For example, a thermostat placed right under the air diffuser. If the thermostat
is set to use an external temperature sensor (Step 28 on page 7), the thermostat displays “OFF”. The thermostat displays “---“ if
there an error with the sensor.
A
E
D
C
B
C
Icon indicates in “Programming Mode”
Setting description (e.g
“inside temper sensor offset”
)
Setting value
Advance to next setting
Return to previous setting
Change value