Installation / Operation Instruction Manual

Table Of Contents
Page 74
CONFIGURATION
8.D.4.a Cascade CH
To navigate to the Cascade CH Conguration Screen, touch the Cascade Icon on the Conguration Screen, then
touch the Cascade CH Icon on the Cascade Conguration Screen.
The Cascade CH Conguration Screen allows
adjustment of the following parameters:
Address – When manually addressing each boiler/heater for cascade operations, this parameter is used to set the
local boiler/heater address. Each boiler/heater must have a unique address. A boiler/heater with a value of 0 is the
Lead boiler/heater. Lag boilers/heaters use values 1 through 7. When automatically addressing each boiler/heater, set
the Lead boiler/heater to a value of 0. With a value of 0, the Cascade Auto-Cong button is available to use, refer to
this parameter below for instructions for automatic addressing the Lag boilers/heaters.
Dynamic Address – This reects the address of the local boiler/heater after it has been manually or automatically
addressed. After a boiler/heater has been manually/automatically addressed, setting this parameter to -1 will remove
the boiler/heater from cascade operations.
Lead SettingsThis button is only selectable when congured as the Lead boiler/heater. When congured as the Lead
boiler/heater, touching this button navigates to the Lead boiler/heater settings. See Section 8.D.4.a.1 on page 75
Lost Lead Backup Setpoint – When congured for Cascade Redundancy - Boiler Internal Set Point, this parameter
is the maximum outlet temperature the local boiler/heater is allowed to supply the system.
Lag On Hysteresis - The value below the Max Lag Temp (Max Lag Temp – Lag On Hysteresis) that the boiler/heater
will turn on to satisfy an active cascade demand based on the local boiler/heater outlet water temperature. Max Lag
Temp is set at the Lead boiler/heater.
LagO󰀨Hysteresis- The value above the Max Lag Temp (Max Lag Temp + Lag O󰀨 Hysteresis) that
the boiler/
heater will turn o󰀨 when satisfying an active cascade heat demand based on the local boiler/heater outlet water
temperature. Max Lag Temp is set at the Lead boiler/heater.
CascadeAuto-Cong – This is only adjustable at the Lead boiler/heater. Once congured as the Lead boiler/
heater, pressing this button will initiate the Lead boiler/heater to nd and address all Lag boilers automatically.
Cascade Release Demand - When communications with the Lead is lost and the Lag units continue to satisfy the
cascade heat demand, pressing this button will remove the heat demand.
NOTE: This only applies when congured for cascade - Boiler Internal Set Point Control. See Section 8.D.4.d on
page 78
NOTE: All boilers/heaters must be wired for cascade operations
prior to performing Cascade Auto-Cong.