LAARS NeoTherm LC NTV1700 - Install and Operating Manual User Manual
Page 87
NeoTherm LC Boilers and Water Heaters
Page 83
Label
Description
How to Reach
CH (Central
Heat)
Setpoint
This setpoint is used when the time-of-day input
is off. If the outdoor reset function is active, this
setpoint provides one coordinate for the outdoor
reset curve. See the section for the CH Outdoor
Reset parameter.
If Lead/Lag enabled –
<’home’ screen> Lead/Lag Master button
button screen> CH (Central Heat) “Time of Day” Setpoint 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 outdoor reset curve, because the time- of-day switch is on. See the section for the CH Outdoor Reset parameter.” If Lead/Lag enabled – <’home’ screen> Lead/Lag Master button button screen> DHW (Domestic Hot Water) D Gain This gain applied to the Differential term of the PID equation for the DHW loop. <’home’ screen> Select a controller button Configuration screen> DHW (Domestic Hot Water) Enable This parameter determines whether the Domestic Hot Water loop is enabled or disabled. When it is disabled, the demand caused by the DHW sensor is ignored. It may be disabled to turn it off temporarily or because the application does not use this feature. <’home’ screen> Select a controller button Configuration screen> DHW (Domestic Hot Water) has priority over CH (Central Heat) This parameter determines the priority of Domestic Hot Water vs. Central Heat call-for- heat, when both of these are enabled and active. (The DHW priority also may shift for a period of time, as specified by DHW Priority time and method parameters.)” <’home’ screen> Lead Lag Master Lag Master screen> Configure button Advanced Settings button/ Left- and Right- arrow buttons Water screen> DHW (Domestic Hot Water) I gain This gain applied to the Integral term of the PID equation for the DHW loop. <’home’ screen> Select a controller button Configuration> DHW (Domestic Hot Water) off hysteresis The off hysteresis is added to the Domestic Hot Water Setpoint to determine the temperature at which the DHW burner demand turns off. <’home’ screen> Select a controller button Configuration screen> DHW (Domestic Hot Water) on hysteresis The on hysteresis is subtracted from the Domestic Hot Water Setpoint to determine the temperature at which the DHW burner demand turns on. <’home’ screen> Select a controller button Configuration> DHW (Domestic Hot Water) P gain This gain applied to the Proportional term of the PID equation for the DHW loop. <’home’ screen> Select a controller button Configuration screen> DHW (Domestic Hot Water) priority override time If this parameter is non-zero then a Domestic Hot Water demand will shift its priority vs. other demand sources according to the specified time. The priority override timing is reset when demand from the DHW source turns off. <’home’ screen> Lead Lag Master button button screen> Advanced Settings button