AERCO BMK 6000 Dual Fuel - Manual (Page 39)

Benchmark 6000 DF Installation, Operation & Maintenance Manual
CHAPTER 3 – OPERATION
OMM-0096_0B AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 39 of 219
GF-141
Ph.: 800-526-0288
03/21/2014
Table 3-1: Operating Controls, Indicators and Displays
ITEM
NO.
CONTROL,
INDICATOR OR
DISPLAY
FUNCTION
1
LED Status Indicators
Four Status LEDs indicate the current operating status as follows:
COMM Lights when RS-232 communication is occurring.
MANUAL
Lights when the valve position (fire rate) is being controlled
using the front panel keypad. This mode of operation is for
service technician use only.
REMOTE
Lights when the unit is being controlled by an external signal
from an Energy Management System.
DEMAND Lights when there is a demand for heat.
2
OUTLET
TEMPERATURE
Display
3–Digit, 7–Segment LED display continuously displays the
outlet water temperature. The °F or °C LED next to the
display lights to indicate whether the displayed temperature is
in degrees Fahrenheit or degrees Celsius. The °F or °C blinks
when operating in the Deadband Mode.
On a BST Master, display flashes & shows header
temperature.
3
VFD Display
Vacuum Fluorescent Display (VFD) consists of 2 lines each
capable of displaying up to 16 alphanumeric characters. The
information displayed includes:
• Startup Messages
• Fault Messages
• Operating Status Messages
• Menu Selection
• BST Messages
4
RS-232 Port
Port permits a Laptop Computer or External Modem to be
connected to the unit’s Control Panel. AERCO offers for purchase
the RS232 Adaptor Cable (P/N 124675), which is designed to work
with this port. This cable features a DB9 connector for connection to
older computers with serial ports or can be used with a Serial-to-
USB adaptor for use in modern computer USB ports
.
5
FAULT Indicator
Red FAULT LED indicator lights when a boiler alarm
condition occurs. An alarm message will appear in the VFD.
6
CLEAR Key
Turns off the FAULT indicator and clears the alarm message
if the alarm is no longer valid. Lockout type alarms will be
latched and cannot be cleared by simply pressing this key.
Troubleshooting may be required to clear these types of
alarms.
7 READY Indicator
Lights ON/OFF switch is set to ON and all Pre-Purge
conditions have been satisfied.
8 ON/OFF Switch Enables and disables boiler operation.
9
LOW WATER LEVEL
TEST/RESET
Switches
Allows operator to test operation of the water level monitor.
Pressing TEST opens the water level probe circuit and
simulates a Low Water Level alarm.
Pressing RESET resets the water level monitor circuit.
Pressing the CLEAR key (item 6) resets the display.