OMM-0153_E
• 5/11/2023 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 85 of 124
CENTURION Installation, Operation & Maintenance Manual
SECTION 8: WATER HEATER MANAGEMENT
5. Go to:
Advanced Setup
→
WHM Cascade
→
Operating Controls
→
Sequencing
Control
. The
Next On Valve Pos
parameter specifies the valve position that will trigger the
next unit to come on line, and the
Next Off Valve Pos
parameter specifies the valve
position that will trigger the next unit go off-line.
6. The Controller includes a
Setback
option, which can be used to adjust the setpoint
temperature, start and end time, for operation during periods of low demand. To specify the
setback time and temperature, go to:
Main Menu
→
Advanced Setup
→
Performance
→
Temperature Control
→
Setpoint Range
and configure the following parameters:
a. Set the
Setpoint Limiting
parameter to
Enabled
.
b. Configure
Setpoint Low Limit
and
Setpoint High Limit
parameters to determine
the temperature range within which the setpoint can vary. You can also configure the
Setpoint Limit
parameter, which allows you to set the number of degrees
below
Setpoint High Limit
the unit’s outlet temperature must fall before restart. Enable
Setpoint Limiting
and then configure the
Setpoint Limit Band.
7. If you want to change the Lead/Lag Hours,
go to
Advanced Setup
→
WHM Cascade
→
Operating Controls
→
Lead/Lag
, set
Lead/Lag Settings
to
Select Lead/Lag
, then select
the Lead and Lag units in the
Lead Unit
and
Lag Unit
fields.
8.8.2 WHM Client Configuration & Start-Up Procedure
Complete the instructions below on all units designated as WHM Clients.
1. Go to:
Advanced Setup
→
WHM Cascade
→
Cascade Configuration
and set the
WHM
Unit Mode
to
WHM Client
.
2. Go to:
Advanced Setup
→
WHM Cascade
→
Cascade Comm
.
3.
Enter the Client unit’s address in the
Unit Address
parameter,
4. Set the communication parameters in the
Cascade Baud Rate
,
Network Timeout
and
Error Threshold
parameters.
5. Specify the
Unit Failsafe Mode
, which determines what happens if a WHM Client units
loses communication with the WHM Manager.
6. If you want to change the Lead/Lag Hours, go to:
Advanced Setup
→
WHM Cascade
→
Operating Controls
→
Lead/Lag
, set
Lead/Lag Settings
to
Select Lead/Lag
, then select
the Lead and Lag units in the
Lead Unit
and
Lag Unit
fields.