tekmar 545 Thermostat Installation - Manual (Page 24)

© 2008 D 545 - 07/08 24 of 40
Thermostat Operation
The thermostat has a built-in sensor to measure air
temperature at the thermostat. In addition to the built-in
sensor, the thermostat has terminals to connect up to two
separate auxiliary sensors. These sensors can either be
room sensors, floor sensors, a remote sensor, an outdoor
sensor, a coil sensor or a duct sensor. If an auxiliary sensor is installed, you must make the
appropriate sensor input setting before the thermostat will
recognize the sensor.
•
• Locate the Sensor 1 and 2 settings in the Adjust menu.
Auxiliary Sensors Section A
Indoor Sensor 076 Outdoor Sensor 070 Duct Sensor 083
Indoor Sensor 077 Slab Sensor 079 Universal Sensor 071
Room Sensor
A room sensor measures the air temperature in the zone
that the thermostat controls. This measurement is used to
calculate on times for heating and cooling operations. Up
to three auxiliary sensor inputs can be configured for a
room sensor. If additional room sensors are installed, the
thermostat averages the room sensor readings and uses
the average as the current room temperature.
If a built-in sensor reading is not required, the built-in sensor
can be turned off. This removes the built-in sensor from
the temperature average.
Floor Sensor
A floor sensor measures floor temperature in the zone that
the thermostat controls. Floor temperature operates in a
range between the Floor Minimum and Floor Maximum
settings.
•
• Locate the Floor Minimum and the Floor Maximum
settings in the Adjust Menu.
Remote Sensor
A single remote sensor can be connected to the thermostat.
The temperature measured by a remote sensor does not
affect the heating and cooling operation and is only used
for display purposes.
•
• Locate the Remote sensor under the Sensor 1 item in
the Adjust menu.
Outdoor Sensor
An outdoor sensor can be connected to the thermostat. The
temperature measured by an outdoor sensor is displayed on
the thermostat. The thermostat communicates the outdoor
temperature to all other devices on the tN4 network.
•
• Locate the Outdoor sensor under the Sensor 2 item in
the Adjust menu.
Coil Sensor
A coil sensor can be connected to the thermostat. The coil
sensor measures the coil return water temperature allowing
the thermostat to determine the operation of the heating
and / or cooling fan. A duct sensor cannot be installed when
a coil sensor is used.
•
• Locate the Coil sensor under the Sensor 2 item in the
Adjust menu.
Duct Sensor
A duct sensor can be connected to the thermostat. The duct
sensor is located in the duct downstream of the heating
or cooling coil. The duct sensor allows the thermostat to
determine the operation of the heating or cooling fan. A duct
sensor cannot be installed when a coil sensor is used.
•
• Locate the Duct sensor under the Sensor 2 item in the
Adjust menu.