OMM-0153_E
• 5/11/2023 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 74 of 124
CENTURION Installation, Operation & Maintenance Manual
SECTION 8: WATER HEATER MANAGEMENT
8.3.7 High Temperature Governor
The High Temperature Governor is a feature that aggressively prevents the outlet temperature
from exceeding the “Temperature High 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
Temperature
Hi
Limit
parameter.
This feature has 5 separate temperature bands for more precise control.
This feature is enabled by the
TEMP GOV
parameter in
Main Menu
→
Advanced Setup
→
Performance
→
Temperature Control
→
FFWD Settings
. Once enabled, the 5 “governor”
items,
GOV Limit-5
to
GOV Limit-15
are available. When the Outlet Temperature nears the
value of the
Temperature Hi
Limit
parameter (
Advanced Setup
→
Performance
→
Temperature Control
→
Temperature Conformance
) the effective Fire Rate will be reduced
by the value entered in
GOV Limit-5
through
GOV Limit-15
.
8.4 WHM Status Displays
The following WHM status information will be displayed to inform the user of critical WHM real-
time operating conditions:
Once a unit is defined as the WHM Manager, the green Manager light appears on the
Controller’s face and the following information appears on the WHM Cascade Status screen:
MANAGER-DISABLED
– The Manager has been disabled and is not available
MANAGER-STANDBY
– The Manager is “Cycled Off” and is available to be lit off
MANAGER-IGNITED
– The Manager is ignited
On units defined as WHM Clients, the flowing information will be displayed:
CLIENT-DISABLED
– The Client has been disabled and is not available
CLIENT-STANDBY
– The Client is “Cycled Off” and is available to be lit off
CLIENT-IGNITED
– The Client is ignited
8.5 Water Heater Management Alternating Status Displays
On both WHM Manager units, the following status information will alternate, and be displayed
on the WHM Cascade Status screen
:
Figure 8-3: WHM Cascade Status Screen
Status & Fault
Messages
