Centurion Water Heater- Edge [ii]: Install-Operation-Service
SECTION 8: WATER HEATER MANAGEMENT
OMM-0153_A
• 8/25/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 90 of 131
8.8 WHM PROGRAMMING & START-UP
All required hardware installation and network wiring must be completed
before
configuring the
WHM parameters into the WHM Manager and Client units. In addition, the required menu
entries must be determined based on the descriptions in the previous sections.
PVI recommends that the WHM Manager be set up first. By doing so, the Manag
er will “push”
most of the operating parameters to each WHM Client when they are brought on-line. For
clarity, the instructions below assume that the WHM Manager and Clients will be consecutively
numbered, starting at 1 (WHM Manager, although that’s not required).
8.8.1 WHM Manager Configuration
Complete the WHM Manager Programming & Start-Up instructions below on the single unit
designated as the WHM Manager.
1. Go to:
Main Menu
→
Advanced Setup
→
WHM Cascade
→
Cascade Configuration
.
a. Set the WHM Unit Mode to WHM Manager.
b. You have the option of designating one of the units in the WHM Cascade as a
Backup Manager. If the WHM Manager fails, manager functionality will automatically
transfer to the designated Backup Manager. To use this functionality, enable the
Auto-Manager Transfer
parameter, then specify the Backup Manager’s address in
the
Backup Manager Addr
parameter. You can also enter a delay before
transferring manager functionality in the
Auto-Manager Timer
parameter.
2. Go to:
Advanced Setup
→
WHM Cascade
→
Application Configuration
.
3. Set the
WHM Setpoint
parameter to the desired setpoint temperature.
4. Go to
Advanced Setup
→
WHM Cascade
→
Cascade Comm
and configure the following:
Figure 8-15: WHM Manager Cascade Communication Screens
a.
Specify the WHM Manager’s address in the
Unit Address
parameter.
b.
Specify the Cascade’s minimum and maximum address in the
Min Address
and
Max Address
parameters (typically 1-max number of units in the cascade).
c. Set the communication parameters in the
Cascade Baud Rate
,
Network Timeout
and
Error Threshold
parameters.
d. Specify the
Plant Failsafe Mode
, which determines what the entire plant does if the
WHM Manager loses communication with the WHM Client units.
e. Check that the
Manager
LED is lit on the Controller’s front face.
