Watts Aerco INN 1060N - Page 46

Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 3 – OPERATION
OMM-0143_A • GF-216 • 9/6/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 46 of 170
Max Address
Numeric Entry
The maximum address in the WHM cascade (1 to 16,
WHM Unit Mode = WHM Manager).
Cascade Baud Rate
Select
The communication baud rate in the cascade.
Network Timeout
Numeric Entry
The timeout before a Modbus Fault is declared (5 to 999
sec.).
Error Threshold
Numeric Entry
The number of Modbus Comm errors allowed before
invoking a Modbus comm fault (1 to 9).
Comm Error 1-8
Read Only
The number of comm errors on ports 1 - 8.
Comm Error 9-16
Read Only
The number of comm errors on ports 9 – 16..
SSD Address
Numeric Entry
The Client/Client Device address (0 to 250).
SSD Temp Format
Toggle
Choose either Points or Degrees (WHM Unit Mode =
WHM Manager).
Unit/Plant Failsafe Mode
Toggle
The unit or plant’s operating mode if communication is
lost: Shutdown or Constant Setpoint.
Unit/Plant Failsafe Setpoint
Numeric Entry
The unit or plant’s setpoint if communication is lost (Unit
Failsafe Mode = Constant Setpoint).
Time & Date Sync
Enable/Disable
If Enabled, all Client units in the Cascade will
synchronize time and date with the WHM Manager
(WHM Unit Mode = WHM Manager).
WHM Min Units
Numeric Entry
The minimum number of units in the WHM cascade (1 to
16, WHM Unit Mode = WHM Manager).
WHM Max Units
Numeric Entry
The maximum number of units in the WHM cascade (1 to
16, WHM Unit Mode = WHM Manager).
WHM On Timeout
Numeric Entry
Specifies the time the WHM Manager must wait for a
backup Client unit to turn on (15 – 300, WHM Unit Mode
= WHM Manager).
Main Menu → Advanced Setup → WHM Cascade → WHM Application Configuration
Application
Read Only
The WHM Cascade’s application: DHW.
Operating Mode
Read Only
The WHM Cascade’s operating mode, Constant
Setpoint.
WHM Setpoint
Numeric Entry
The WHM Cascade’s Setpoint (Operating Mode =
Constant Setpoint).
Main Menu → Advanced Setup → WHM Cascade → Operating Controls
Main Menu → Advanced Setup → WHM Cascade → Operating Controls → Sequencing Controls
Low Flow Mode
Select
Choose Off, On - Outlet Temp or On - Avg Temp. If
either “On” option is chosen, and WHM detect a “low-
flow” condition, it slowly shuts down one unit at a time in
an attempt to raise the Fire Rate of the remaining units.
Low Flow Threshold
Numeric Entry
Specifies the valve position below which the plant enters
this mode (10% to 35%).
Next On Valve Pos
Numeric Entry
The valve position that triggers the next unit to come on
line.
Next Off Valve Pos
Numeric Entry
The valve position that triggers the next unit to go off
line.
WHM Max Units
Numeric Entry
The maximum number of units that will fire (WHM Unit
Mode = WHM Manager).
Valve Close Delay
Numeric Entry
The time an open Isolation Valve will remain open once
a unit cycles off (WHM Unit Mode = WHM Manager).
WHM Fire Rate Up
Numeric Entry
Controls the frequency of updates made to the Fire Rate
sent to all units.
Main Menu → Advanced Setup → WHM Cascade → Operating Controls → Anti-Cycling Control
On Delay
Enter
Minimum length of time a unit must stay off after shutting
down/going standby (30 to 300 sec.).
Slow Shutdown
Enable/Disable
Once enabled, if the unit runs at a fire rate above Off
Delay Threshold and then shuts down, the fire rate will
be reduced to the Stop Level for a period of time defined
in Off Delay.