Laars NEOTHERM NTV, Service Manual

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Service Manual - NeoTherm 500
Quick Start This menu gives you an easy way to check or change the most common set-
tings on the unit:
• CH setpoint
• DHW setpoint
• Outdoor reset (Note - On some units you cannot disable this function)
• Low water temperature
• Maximum outdoor temperature
• Minimum outdoor temperature
• Adjustable high limit
• Adjustable low limit
Login If you want to change a setup value or function, and the system requires a
password, you can enter it here.
Test These parameters let you set the burner operation for combustion testing, and
control pump operation.
Advanced Setup The sub-menus listed here allow you to set up most of the functions on the
controller. (For many of these functions, the system will require a password
before it will allow you to make changes.)
Diagnostics Use the Diagnostics to check the status of the sensors and the digital inputs
and outputs. The system also records a history of lockouts and alarms.
Display Setup You can use this option to adjust the contrast of the display or change the
items which appear at the top of the Home display.
Table D5-2 - Functions on Info/ Install Menu
Changing a Value
The procedure for changing a control value used by the
system is listed below. (In this example, we will use the
screen for the CH Setpoint.)
• Use the Up- and Down-Arrow buttons to step down
through the list until you have highlighted the correct
line on the display.
• Press the round OK button to select that line. Figure
D5-4 shows a typical screen for this type of setting.
• The current setting for the setpoint appears in the
box at the top of the screen. In this example, this is
182°F.
• The numbers near the left edge of the screen show
the allowable range for this value. In this case, the
setpoint can be set anywhere between 190°F and
55°F.
• Press the Up- and Down-Arrow buttons to scroll the
setpoint until you see the correct value in the box.
• When the value is correct, press the round OK button.
Fig. D5-4 – Changing a value
Using the Current User Interface - continued
D5
cont.