83
Rev 2.1
Differential above setpoint when last LL stage boiler is turned off.
5-15.3 To Change Lead Lag On Hysteresis
Configure Lead Lag Master Configuration Advanced Setting Modulation On Hysteresis Textbox
(Default: 10ͼF)
x Type in desired LL on hysteresis
Differential below setpoint when first LL stage boiler is turned on.
5-15.4 To Change Lead Lag Hysteresis Step Time
Configure Lead Lag Master Configuration Advanced Setting Modulation Hysteresis Step Time Textbox
(Default: 0m0s)
x Type in desired LL hysteresis step time
5-15.5 To Change Lead Lag P-I-D Parameters
Configure Lead Lag Master Configuration Advanced Setting Modulation P-Gain Textbox (Default: 50)
Configure Lead Lag Master Configuration Advanced Setting Modulation I-Gain Textbox (Default: 50)
Configure Lead Lag Master Configuration Advanced Setting Modulation D-Gain Textbox (Default: 0)
x Type in desired number between 0 to 400
P gain applied to the proportional term of the PID equation for the LL.
I gain applied to the Integral term of the PID equation for the LL.
D gain applied to the Differential term of the PID equation for the LL.
5-16 Lead Lag Advanced Setting: CH Parameter
5-16.1 To Change Lead Lag CH Demand Switch
Configure Lead Lag Master Configuration Advanced Setting Central Heat Demand Switch Textbox
(Default: STAT terminal)
x Select STAT terminal for LL CH loop demand from stat input
x Select Disable to not use demand switch input for LL CH loop
x Enviracon Heat Remote STAT
5-16.2 To Change Lead Lag CH Setpoint Source
Configure Lead Lag Master Configuration Advanced Setting Central Heat Setpoint Source Textbox
(Default: 4-20mA setpoint is used)
x Select Local to use local setpoint as CH setpoint
x Select 4-20mA to use remote setpoint as CH setpoint
5-16.3 To Change Lead Lag CH Loop Time Of Day Setpoint
Configure Lead Lag Master Configuration Advanced Setting Central Heat Time of Day Setpoint Textbox
(Default: 120ͼF)
x Type in desired temperature between 32ͼF and 240ͼF (0ͼC and 115ͼC)
This Setpoint is used when the time-of-day input is on. If the Outdoor Reset function is active, this Setpoint provides
one coordinate for the shifted (because TOD is on) outdoor reset curve, as described for the LL CH Outdoor Reset
parameter.
5-16.4 to change lead lag CH 4-20ma setpoint range
Configure Lead Lag Master Configuration Advanced Setting Central Heat 4 mA Water Temperature
Textbox (Default: 40ͼF)
Configure Lead Lag Master Configuration Advanced Setting Central Heat 20 mA Water Temperature
Textbox (Default: 200ͼF)
With LL CH 4-20mA remote setpoint enabled, setpoint is provided using the linear interpolation of the 4 mA (min
setpoint) and 20 mA (max setpoint) range received from the building automation system.
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