Using the current user interface - continued – LAARS NeoTherm NTV (Sizes 399-850 MBTU/h) - Service Manual User 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.

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