Aerco Benchmark 2.0 Installation, Operation & Maintenance Instructions Manual page 81

APPENDIX A - BOILER MENU ITEM DESCRIPTIONS - Continued
MENU LEVEL & OPTION
CONFIGURATION MENU (Cont.)
Reset Ratio
Outdoor Sensor
System Start Tmp
Setpoint Lo Limit
Setpoint Hi Limit
Temp Hi Limit
Max Valve Positon
Pump Delay Timer
Aux Start On Dly
Failsafe Mode
Analog Output
Lo Fire Timer
Network Timeout
DESCRIPTION
Permits setting of Reset Ratio when operating boiler
in the Outdoor Reset Mode. Reset Ratio is
adjustable from 0.1 to 9.9. Default is 1.2.
Allows outdoor sensor function to be enabled or
disabled. Default is disabled.
If outdoor sensor is enabled, this menu item allows
the system start temperature to be set from 30 to
100°F. Default is 60°F.
Used to set the minimum allowable setpoint (40°F to
Setpoint Hi Limit). Default is 60°F
Used to set the maximum allowable setpoint
(Setpoint Lo Limit to 240°F). Default is 200°F.
This is the maximum allowable outlet temperature
(40 to 240°F). Any temperature above this setting
will turn off the unit. The temperature must then drop
5° below this setting to allow the unit to run. Default
Hi Limit is 210°F.
Sets the maximum allowable valve position for the
unit (40% to 100%). Default is 100%.
Specifies the amount of time (0 to 30 min.) to keep
the pump running after the unit turns off. Default is
zero.
Specifies the amount of time to wait (0 to 120 sec.)
between activating the Aux Relay (due to a demand)
and checking the pre-purge string to start the boiler.
Default is 0 sec.
Allows the Failsafe mode to be set to either
Constant Setpoint or Shutdown. Default is
Shutdown.
Must be set to Valve Pos 0-10V for Benchmark
1.5LN.
Specifies how long (2 to 600 sec.) to remain in the
low fire position after ignition, before going to the
desired output. Default is 2 sec.
Specifies the timeout value (seconds) before a
Modbus fault is declared. Available settings range
from 5 to 999 seconds. Default is 30 seconds.
APPENDIX A
A-3