Benchmark 2500 - 3000 Boilers
APPENDIX A: BOILER MENU DESCRIPTIONS
Page
140
of
207
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0094_0F
09/30/2015
Ph.: 800-526-0288
GF-137
CONFIGURATION MENU
MENU OPTIONS
DESCRIPTION
16 Aux Start On Dly
Specifies the amount of time to wait, up to 120 seconds,
between activating the Aux Relay (due to a demand) and
checking the pre-purge string to start the boiler.
17 Failsafe Mode
Allows the Failsafe mode to be set to either Constant Setpoint
or Shutdown.
18 Analog Output
Must be set to
Valve Pos 0-10V
for BMK 2500 and BMK 3000.
DO NOT CHANGE
from its default value.
19 Lo Fire Timer
Specifies how long, from 2 to 600 seconds, to remain in the low
fire position after ignition, before going to the desired output.
20 Setpt Limiting
Setpoint Limiting can be Enabled or Disabled.
21 Setpt Limit Band
The Setpoint Limit Band can be set from
0
°F
to
10°F (0°C to
5.5°C)
.
22 Network Timeout
Specifies the timeout value in seconds before a Modbus fault is
declared, up to 999 seconds
23 Shutoff Dly Temp
This feature delays the shutdown of a boiler in order to reduce
excessive cycling. This specifies the temperature value the
Outlet Temperature is permitted to rise above setpoint before
being shut down.
24 Demand Offset
This entry will reduce excessive ON/OFF cycling in AUTO
mode. When this entry is a non-zero value, the unit will not turn
on again until
Valve Position In
reaches the Start Level value
AND the Outlet Temperature goes below the
Active Setpoint –
Demand Offset.
In addition, the boiler will fire at the 29% Valve
Position level or below for a period of one minute.
When this entry is set to zero, the unit will turn on again as
soon as the
Valve Position in
reaches the
Start Level
value.
There will not be a one minute delay when firing at the 29%
Valve Position level.
