Cambridge Air Solutions.
46
M-Series Technical Manual
SETTING TEMPERATURES
The Operating Electronic Thermostat requires two
temperature settings. When the temperature drops below
the HEAT ON setting, the heater will turn on. When
the heater raises the space temperature above the HEAT
OFF setting, the heater will turn off. This difference
provides an adjustable range of operation for the heater
which minimizes temperature swings.
The minimum run time and off time for the heater
regardless of temperature are both set at 2 minutes. The
allowable temperature range is 40°F to 99°F. The HEAT
OFF temperature can not be set lower than the HEAT
ON temperature.
1. Press and hold the
HEAT ON
button while pressing
the
UP
or the
DOWN
button until the desired
temperature for the heater to turn ON is displayed.
2. Press and hold the
HEAT OFF
button while pressing
the
UP
or the
DOWN
button until the desired
temperature for the heater to turn OFF is displayed.
TEMPERATURE CALIBRATION
To compensate for lead wire resistance, it may be
necessary to make an adjustment to the displayed
temperature to correct it to the temperature measured at
the thermistor sensor. The calibration feature allows the
displayed temperature to be offset either above or below
the actual sensed temperature. Be sure to use an accurate
temperature meter for making this correction.
1. Press and hold the
HEAT ON
and
HEAT OFF
buttons
while pressing the
UP
or the
DOWN
button until the
correct temperature is displayed. ( A period [.] after
the temperature will indicate the Calibration Mode).
2. Pressing the
UP
or the
DOWN
button will display the
current calibration difference above or below (-) the
measured temperature.
