LAARS NeoTherm NTV (Sizes 150–850 MBTU/h) - Install and Operating Manual - Manual (Page 77)

Page 73 N eo T herm Boilers and Water heaters
Name PW? Function How to get there
Max. outdoor temp. (CH) - Used with Outdoor Reset –
This is the maximum outdoor temperature at which
the Outdoor Reset feature will be active. Above
this point, the Low Water Temp. will be used as the
setpoint.
quick Start
Info/ Advanced Setup/ CH
Configuration/ Outdoor Reset Config.
Max. outdoor temp. (LL) - When using the Lead/ Lag system to control
multiple boilers, with Outdoor Reset enabled –
This is the maximum outdoor temperature at which
the Outdoor Reset feature will be active.
Info/ Advanced Setup/ Lead Lag
Configuration/ LL Outdoor Reset
MB1 Modbus address - Allows for a specific address assignment for each
control in the system (1-8).
Info/ Advanced Setup/ System
Config./ System ID and Access
MB2 Modbus address - Allows for a specific address assignment for each
control in the system (1-8).
Info/ Advanced Setup/ System
Config./ System ID and Access
Min. boiler water temp.
(CH)
- Used with Outdoor Reset –
If a value is entered here, the temperature in the
boiler will never be allowed to drop below this
temperature. This will protect the boiler against
possible damage due to expansion of ice inside
the unit. (Notice that this is different from the “Low
Water Temperature” described above.)
Info/ Advanced Setup/ CH
Configuration/ Outdoor Reset Config.
Min. outdoor temp. (CH) - Used with Outdoor Reset –
This is the maximum outdoor temperature at which
the Outdoor Reset feature will be active. Below this
point, the system will use the normal CH setpoint.
quick Start
Info/ Advanced Setup/ CH
Configuration/ Outdoor Reset Config.
Min. outdoor temp. (LL) - When using the Lead/ Lag system to control
multiple boilers, with Outdoor Reset enabled –
This is the maximum outdoor temperature at which
the Outdoor Reset feature will be active. Below this
point, the system will use the normal LL setpoint.
Info/ Advanced Setup/ Lead Lag
Configuration/ LL Outdoor Reset
Min. water temp. (LL) - When using the Lead/ Lag system to control
multiple boilers, with Outdoor Reset enabled –
If a value is entered here, the temperature in the
boiler will never be allowed to drop below this
temperature. This will protect the boiler against
possible damage due to expansion of ice inside
the unit. (Notice that this is different from the “Low
Water Temperature” described above.)
Info/ Advanced Setup/ Lead Lag
Configuration/ LL Outdoor Reset
Modbus address - When using the Lead/ Lag system to control
multiple boilers –
Each controller must have a unique Modbus
address.
Info/ Advanced Setup/ System
Config./ System ID and Access
Modulation sensor - Used with external modulation control –
The choices are Outlet/ Inlet/ S5, S10, and None. Info/ Advanced Setup/ CH
Configuration
OEM ID Y Cannot be changed by the Installer. Info/ Advanced Setup/ System
Config./ System ID and Access
OEM password Y Cannot be changed by the installer. Info/ Advanced Setup/ System
Config./ System ID and Access
Off hysteresis (CH) - For hydronic heating (Central Heat) –
The control system will not shut off the boiler until
the temperature at the System sensor rises to the
CH setpoint plus a hysteresis value (normally about
10°F).
Info/ Advanced Setup/ CH
Configuration