AERCO RECON 1000 - Manual (Page 118)

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 8 – WATER HEATER MANAGEMENT
Page 118 of 178 AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 OMM-0103_0A
PRI: 10/28/2014 Phone: 800-526-0288 GF-147
8.3.8 WHM Auto Mstr
Password Level 2 (6817) or greater must be entered in order to access the WHM Auto Mstr
menu option. This item is used to enable (yes) or disable (no) an Automatic Master switch-over
function. When enabled (yes), the WHM will automatically select a new Master if the current
Master fails or loses power. This option is used with the WHM Auto Timer option described in
the following section. The default for this option is No (disabled).
8.3.9 Run Hours and Run Cycles
Run hours and run cycles are monitored to select the lead unit and lag unit (next on unit) in
WHM. In the event a C-More or PMC board is exchanged in the field, this feature will allow the
user to increase but not decrease the run hours or run cycles. Once a user hits enter, the
changes made will be permanent and this feature will not allow changing to the previous value.
Only AERCO personnel are permitted to change this menu item. To increase the Run
Hours/Cycles, go the “Run Cycles” or “Run Hours” items in the Diagnostic menu.
8.3.10 High Temperature Governor
The High Temperature Governor is a feature that aggressively prevents the Outlet Temperature
from exceeding the “High Temp Limit”. The High Temperature Governor is independent of the
system PID and Feed-forward control methodology and independently modulates the Valve
Position (Fire Rate) if the Outlet Temperature dangerously approaches the “High Temp Limit”
setting.
This feature has 5 separate temperature bands for more precise control.
This feature is enabled or disabled by the “TEMP GOV ENABLE” item in the Tuning Menu. See
Table A-4 in Appendix A for a description of this item and the 5 governor items.
8.4 WHM STATUS DISPLAYS
The following WHM status information will be displayed on two line VFD Display on the front of
the C-More to inform the user of critical WHM real-time operating conditions:
WHM Master Identification
Whenever a WHM Heater is defined as the MASTER, The large, 3 digit display of the front for
the C-More will continuously blink and display the OUTLET TEMPERATURE.
Master Display
The Heater defined as the MASTER will display the flowing status information on the two line
VFD display:
MASTER-DISABLED – The Master has been disabled and is not available
MASTER-STANDBY – The Master is “Cycled Off” and is available to be lit off
MASTER-IGNITED – The Master is ignited
Slave Displays
The Heaters defined as the SLAVE units will display the flowing status information on the two
line VFD display:
SLAVE-DISABLED – The Slave has been disabled and is not available
SLAVE-STANDBY –
The Slave is “Cycled Off” and is available to be lit off
SLAVE-IGNITED – The Slave is ignited