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Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 3 – OPERATION
OMM-0078_0M
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
39
of
216
GF-128
Phone: 800-526-0288
09/11/2015
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 RS232 communication is occurring – see Item 4.
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.
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
4
RS232
Port
This port is used only factory-trained personnel to monitor OnAER
communications, in combination with the
RS232 Adaptor Cable
(P/N
124675
)
.
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alarm is no longer valid.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 when 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.