LAARS NeoTherm NTV (Sizes 150–850 MBTU/h) - Install and Operating Manual - Manual (Page 76)

Page 72 LAARS Heating Systems
Name PW? Function How to get there
Demand switch (CH) - Set to “STAT terminal.” Info/ Advanced Setup/ CH
Configuration
DHW pump control Y The boiler pump can be turned on manually, or it
can be set to operate automatically.
Info/ Test/ Manual Pump Operation
Info/ Advanced Setup/ System
Config./ Pump Config.
DHW pump cycle count Y A new value can be written here if the pump or
controller is replaced.
Info/ Advanced Setup/ System
Config./ Statistics Config.
DHW pump overrun time Y This indicates how long the DHW pump will remain
on after demand from any source ends.
Info/ Advanced Setup/ System
Config./ Pump Config.
DHW setpoint - This setpoint is used to control the Domestic Hot
Water function.
quick Start
Info/ Advanced Setup/ DHW
Configuration
Digital I/O - This shows the status of selected switches and
valves that are either On or Off.
Info/ Diagnostics
Display setup - Use this to change the lines that appear at the top
of the Home display, and to set the brightness of the
display.
Info/ Display Setup
General configuration - Used by the Laars factory. Info/ Advanced Setup/ System
Config./ System Config.
I gain (CH) Y This gain is applied to the Integral term of the PID
equation for the CH loop.
Info/ Advanced Setup/ CH
Configuration
I gain (DHW) Y This gain is applied to the Integral term of the PID
equation for the DHW loop.
Info/ Advanced Setup/ DHW
Configuration
I gain (LL) Y When using the Lead/ Lag system to control
multiple boilers –
This gain is applied to the Integral term of the PID
equation for the hydronic heating loop.
Info/ Advanced Setup/ Lead Lag
Configuration/ LL Master Config.
Installer password Y This can only be changed by a user with the OEM-
level password.
Info/ Advanced Setup/ System
Config./ System ID and Access
LCD contrast - Use this to change the brightness of the display. Info/ Display Setup
Lockout history - This displays the 15 most recent lockouts. Info/ Diagnostics/ History
Low water temp. (CH) - Used with Outdoor Reset –
Above the point where Outdoor Reset stops
adjusting for a higher outdoor temperature (the Max.
Outdoor Temperature value), this parameter is used
as the setpoint.
quick Start
Info/ Advanced Setup/ CH
Configuration/ Outdoor Reset Config.
Low water temp. (LL) - When using the Lead/ Lag system to control
multiple boilers, with Outdoor Reset enabled –
Above the point where Outdoor Reset stops
adjusting for a higher outdoor temperature (the Max.
Outdoor Temperature value), this parameter is used
as the setpoint.
Info/ Advanced Setup/ Lead Lag
Configuration/ LL Outdoor Reset
Manual burner operation Y During testing, use this to turn the burner on and off. Info/ Test
Master enable (LL) - When using the Lead/ Lag system to control
multiple boilers –
One of the controllers must be set up as the Lead/
Lag Master to supervise the Lead/lag system. The
master function must be disabled on all of the other
controllers. See the section on “About Lead/Lag.”
Info/ Advanced Setup/ Lead Lag
Configuration/ LL Master Config.