Use and Care Manual

55
▪ K. OUTDOOR TEMPERATURE MODE
NOTE: If the system requires a xed operating temperature, the outdoor sensor is not required and should not be installed.
There is no connection required if an outdoor sensor is not used in the installation.
1. Use a minimum 18 AWG wire for runs of up to 150 feet.
2. Mount the outdoor sensor on an exterior surface of the building, preferably on the north side in an area that will not be affected by direct sunlight
and will be exposed to varying weather conditions.
NOTE: For correct mounting procedures, follow instructions provided with the sensor.
NOTE: If sensor wires are located in an area with sources of potential electromagnetic interference (EMI), the sensor wires should be shielded, or
the wires routed in a grounded metal conduit. If using shielded cable, the shielding should be connected to the common ground of the appliance.
NOTE: Outdoor Temperature Mode Icon on the display will ash if an Outdoor Sensor or 0~10 Volt is not connected to the appliance.
See Figure 38 to set your Outdoor Reset Curve.
To check the CH Target Temperature while using Outdoor Temperature Mode, press the button while the appliance is operational and the display
panel is powered on.
▪ L. 0~10 VOLT INPUT
NOTE: The optimal set up should be determined for each job location.Default setting: Max Temperature: 180 °F, Min Temperature: 120°F
NOTE: Ensure that the polarity of the connections from the external modulating appliance controller to the appliance is correct.
Reversed polarity could lead to erratic and/or no response from the appliance controller.
NOTE: Outdoor Temperature Mode Icon on the display will ash if an Outdoor Sensor or 0~10 Volt is not connected to the appliance.
Reversed polarity could lead to erratic and/or no response from the appliance controller.
Figure 38 – Outdoor Reset Curve – See Installer Mode for Curve Setting Descriptions
1. A signal from a building management system may be connected to the appliance to enable remote control. This signal should be a 0~10 volt
positive-going DC signal. When the 0~10V input is wired to the appliance terminal strip, a building control system can be used to control the set point
temperature of the appliance. The control interprets the 0~10 volt signal as follows; when the signal is between 0 and 1.5 volts, the appliance will be
in standby mode, not ring. When the signal rises above 1.5 volts, the appliance will ignite. As the signal continues to rise towards its maximum of 10
volts, the appliance will increase in set point temperature.
2. Connect a building management system or other auxiliary control signal to the terminals marked for this purpose on the appliance terminal block
(shown in Piping Diagrams, this manual). Caution should be used to ensure that the 0~10 VOLT + connection does not be come connected to
ground.