Burnham Apex APX399 Installation, Operating And Service Instructions page 91

X. Operation
G. Changing Adjustable Parameters (continued)
2. Adjusting Parameters (continued)
From the "Home" screen select the Adjust button to access the adjustment mode screens show below (if required, refer to
the previous page to review how to enter Adjustment mode):
The following pages describe the
Control's adjustable parameters.
Parameters are presented in the order
they appear on the Control's Display,
from top to bottom and, left to right
System
"Press" button to access the following parameters:
Setup
Factory range /
Setting Choices
Fahrenheit,
Fahrenheit
Celsius
4 0-14
8 0-14
Not Installed,
Wired Wired
Wireless
Enabled Enable/Disable
0 Secs 0-900 Secs
Disabled Enable/Disable
70°F 0-100°F
Temperature Units
The Temperature Units parameter determines whether temperature is represented in units of
Fahrenheit or Celsius degrees.
Display Brightness
Display brightness is adjustable from 0 to 14.
Display Contrast
Display contrast is adjustable from 0 to 14.
Outdoor Sensor Source
Not Installed Outdoor Sensor is not connected to the boiler, the sensor is not monitored for faults.
Wired Outdoor Sensor is installed directly on the boiler terminal Strip-TB2.
Wireless Outdoor sensor is installed and wireless.
Frost Protection
Disable Frost Protection is not used.
Enable Boiler and system circulators start and boiler fires when low outside air, supply and
return temperatures are sensed as follows:
Device
Started
Boiler & System
anti-Short Cycle Time
Anti-short cycle is a tool that helps prevent excessive cycling resulting from a fast cycling
Thermostat or Zone valves. It provides a minimum delay time before the next burner cycle. DHW
demand is serviced immediately, without any delay.
Warm Weather Shutdown Enable
Disable Warm Weather Shutdown (WWSD) is not used.
Enable The boiler will not be allowed to start in response to a central heat call for heat if the
outside temperature is greater than the WWSD setpoint. WWSD is initiated as soon
as outside air temperature is above WWSD Setpoint. The control does not require
call for heat to be satisfied.
The boiler will still start in response to a Domestic Hot Water call for heat.
Warm Weather Shutdown Setpoint
The Warm Weather Shutdown (WWSD) Setpoint used to shutdown the boiler when enabled by the
"WWSD Enable" parameter.
System
Setup
Pump
Setup
Manual
Control
Central
Heat
Outdoor
Reset
Sequence
Master
Parameter and Description
Start
Temperatures Temperatures
Outside Air < 0°F Outside Air > 4°F
Modulation
Setup
Contractor
Setup
- More -
Domestic
Hot Water
Remote
4-20mA
Sequence
Slave
Stop
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