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10
Operation
(continued)
2. Adjusting Parameters
After entering the password, editing
parameters is accomplished as follows:
3. System Parameters
Select
Temperature Units
Outdoor Sensor Source
Not Installed Outdoor Sensor is not connected to the boiler. Sensor is not
monitored for faults.
Wired
Outdoor Sensor is wired to boiler low voltage PCB.
Modbus
Outdoor temperature is retrieved through the Modbus connection
from another boiler or Energy Management System.
Wireless outdoor sensor is installed. Honeywell Wireless Outdoor Air
Wireless
Reset Adapter part number 105766-01 is a wireless outdoor air
sensor. The package includes a Wireless Receiver Module and
Wireless Outdoor Sensor. The sensor communicates wirelessly to the
receiver module. The receiver module is wired to the low voltage
PCB EnviraCOM terminals. Refer to wiring section for more
information.
Outdoor Sensor Calibration
Outdoor sensor calibration allows a single point adjustment of the outdoor sensor
reading. This adjustment is a correction offset added to or subtracted from the
outdoor temperature sensor reading. It is recommended to make any calibration
when outdoor air temperature is at or near the most common operating point. For
example, when necessary, calibrate the sensor when outdoor air is halfway between
Minimum and a Maximum Outdoor Temperature parameter value is recommended.
Anti-short Cycle Time
Anti-short cycle is a tool that helps prevent excessive cycling resulting from a fast
cycling enable-disable input. It provides a minimum delay time before the next
burner cycle. DHW demand is serviced immediately, without any delay.
106308-05 - 3/23
Figure 10-18: Adjusting Parameters
to access the following parameters.
Parameter and Description
APEX
Installation, Operating, & Service Instructions
Factory Setting
Fahrenheit
Wired
0 degrees
0 min.
Range / Choices
Fahrenheit,
Celsius
Not installed,
Wired,
Modbus,
Wireless
-50 + 50°F
tenths of degree
(-45.6 to 10°C)
0 - 20 min.
87
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