LAARS Heating Systems
Page 70
10. Press the left-arrow or right-arrow until you see
the Outdoor Reset screen (Fig. 89).
fig. 89 – outdoor reset
“Outdoor Reset” allows the system to adjust
the Central Heat setpoint to compensate
for changes in the outdoor temperature.
This allows the whole system to run more
efficiently. For details, see the section on
“About Outdoor Reset.”
Enable -
Enable = Outdoor Reset feature turned on
Max. outdoor temp. -
If the outdoor temperature reaches this value
or above, the system will use the Low Water
Temp value as the setpoint. In the example
shown in Fig. 88, the Max. Outdoor Temp.
is set to 70°F. If the outdoor temperature is
70°F or above, the system will use 100°F
(the Low Water Temp.) as the setpoint.
Min. outdoor temp. -
If the outdoor temperature reaches this value
or below, the system will not compensate
for the outdoor temperature. In the example
shown in Fig. 88, the Min. Outdoor Temp.
is set to 32°F. If the outdoor temperature
reaches 32°F or below, the system will use
the normal Lead/Lag System setpoint (120°F
in this example).
Low water temp. -
If the outdoor temperature reaches the Max.
Outdoor Temp. or higher, the system will
use the Low Water Temp value as the new
setpoint. In the example shown in Fig. 89,
the Max. Outdoor Temp. is set to 70°F. If the
outdoor temperature reaches 70°F or above,
the system will use the Low Water Temp.
value (100°F) as the setpoint.
Min. boiler water temperature -
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.
11. The Show Line button at the bottom of the
screen displays a curve which shows how
the system will behave at different outdoor
temperatures. See Fig. 90. (This screen is also
explained in the section on “About Outdoor
Reset.”)
fig. 90 – outdoor reset Display
12. From the Outdoor Reset screen, press the left-
arrow or right-arrow until you see the Warm
Weather Shutdown screen (Fig. 91).
fig. 91 – Warm Weather Shutdown
Summary of Contents for NTV1000
Page 2: ......
Page 35: ...NeoTherm Boilers and Water Heaters Page 31 Fig 20 Ladder Diagram...
Page 36: ...LAARS Heating Systems Page 32 Fig 21 Wiring Diagram...
Page 37: ...NeoTherm Boilers and Water Heaters Page 33...
Page 51: ...NeoTherm Boilers and Water Heaters Page 47 Fig 52 Connection Terminals...
Page 130: ...LAARS Heating Systems Page 126 Fig 140 Machine Frame and Rear Panel 13 3 PARTS ILLUSTRATIONS...
Page 131: ...NeoTherm Boilers and Water Heaters Page 127 Fig 141 Front Panel and Covers...
Page 132: ...LAARS Heating Systems Page 128 Fig 142 Burners and Combustion Chambers...
Page 134: ...LAARS Heating Systems Page 130 Fig 145 Electronic Components...
Page 135: ...NeoTherm Boilers and Water Heaters Page 131 Fig 146 Condensate Trap Fig 147 Control Bezel...
Page 136: ...LAARS Heating Systems Page 132 Fig 148 Flow Switch...
Page 137: ...NeoTherm Boilers and Water Heaters Page 133 This page intentionally left blank...