LAARS NeoTherm NTV1000 - Install and Operating Manual - Manual (Page 94)

LAARS Heating Systems
Page 90
Label Description How to Reach
Lead lag off
hysteresis
When the Lead/Lag function is enabled, the
control system will not shut off the boilers until
the temperature at the System sensor rises to the
Lead/Lag CH setpoint plus a hysteresis value
(normally about 10°F).
Home screen/ View Lead/Lag button/
Lead/Lag screen/ Lead/Lag Master
button/ Lead/Lag Master screen/
Configure button/ Lead/Lag Master
Configuration screen/ Advanced Settings
button/ Left- or Right- arrow buttons/
Modulation screen.
Lead lag on
hysteresis
When the Lead/Lag function is enabled, the
control system will not fire the boilers until the
temperature at the System sensor drops to the
Lead/Lag CH setpoint minus a hysteresis value
(normally about 10°F).
If Lead/Lag enabled –
Home screen/ View Lead/Lag button/
Lead/Lag screen/ Lead/Lag Master
button/ Lead/Lag Master screen/
Configure button/ Lead/Lag Master
Configuration screen
Lead lag P
gain
This is part of the damping function
(“Proportional”) used when the controller
interprets the input from the System sensor.
Home screen/ View Lead/Lag button/
Lead/Lag screen/ Lead/Lag Master
button/ Lead/Lag Master screen/
Configure button/ Lead/Lag Master
Configuration screen/ Advanced Settings
button/ Left- or Right- arrow buttons/
Modulation screen
Lead/Lag
Slave Enable
Select Enable Slave for Built-in Lead/Lag
Master. Be sure this is turned on for each
controller in the system.
Home screen/ Select controller/ Status
Summary screen/ Configuration button/
Configuration screen/ Select line for LL
Slave Configuration/ Lead/Lag Slave
Configuration screen
Lead/
Lag Slave
Sequence
Order
Enter the position of this Slave in the sequence.
Be sure to enter this for each Slave in the
system.
Home screen/ Select controller/ Status
Summary screen/ Configuration button/
Configuration screen/ Select line for LL
Slave Configuration/ Lead/Lag Slave
Configuration screen
Lead/
Lag Slave
Modbus
Address
Each slave must have a unique Modbus address.
Be sure to enter this for each controller in the
system.
Home screen/ Select controller/ Status
Summary screen/ Configuration button/
Configuration screen/ Select line for LL
Slave Configuration/ Lead/Lag Slave
Configuration screen
Lead/Lag
Outdoor
Reset Enable
Enable = Outdoor Reset feature turned on Home screen/ View Lead/Lag button/
Lead/Lag screen/ Lead/Lag Master
button/ Lead/Lag Master screen/
Configure button/ Lead/Lag Master
Configuration screen/ Advanced Settings
button/ Left- or Right- arrow buttons/
Outdoor Reset screen
Lead/Lag
Outdoor
Reset
low water
temperature
This parameter is used as the normal setpoint
above the point where Outdoor Reset stops
adjusting for a higher outdoor temperature (the
Max. Outdoor Temperature value)
Home screen/ View Lead/Lag button/
Lead/Lag screen/ Lead/Lag Master
button/ Lead/Lag Master screen/
Configure button/ Lead/Lag Master
Configuration screen/ Advanced Settings
button/ Left- or Right- arrow buttons/
Outdoor Reset screen