Lochinvar 1.5, 1.3 No. of months for service reminder Serv Not time, 10 Parameter Set 4F

PC Program Instructions

6Parameters (continued)

No. of months for service reminder (Serv Not time)

When the boiler control determines that a scheduled service is due based on days of installation, the boiler display will show a “Maintenance Required” screen. This parameter is adjustable by accessing parameter 4EA. The time range for this parameter is 0 months to 36 months. The default time is 12 months.

Running hours for service reminder (Serv NotRun h)

When the boiler control determines that a scheduled service is due based on the hours of actual operation, the boiler display will show a “Maintenance Required” screen. This parameter is adjustable by accessing parameter 4EB. The time range for this parameter is 0 hours to 100,000 hours. The default time is 10,000 hours.

Burner cycles for service reminder (Serv Not cycl)

When the boiler control determines that a scheduled service is due based on the number of boiler cycles, the boiler display will show a “Maintenance Required” screen. This parameter is adjustable by accessing parameter 4EC. The range for this parameter is 0 cycles to 100,000 cycles. The default is 10,000 cycles.

To adjust the Outdoor Air Reset curve, click on the tab labeled 4F OA Reset Curve (see FIG. 6-10 below).

Figure 6-10Parameter Set 4F

OA reset water temp at min outdoor temp (4FC) (Reset T Lo Out)

When the outdoor air temperature drops to its minimum setting (4FC), the water temperature setpoint will be at this value. However, if the SH user setpoint (4AA) is lower, it will override this setting. If the SH user setpoint is higher, the water temperature setpoint will continue to climb as the outdoor temperature drops below 4FC. This parameter can be changed by accessing parameter 4FA. The temperature range of this parameter is 0°F (-18°C) to 190°F. (88 °C). The default value is 180°F (82°C), (FIG 6-11, page 18).

OA reset water temp at max outdoor temp (4FD) (Reset T Hi Out)

When the outdoor air temperature rises to or above its maximum setting (4FD), the water temperature setpoint will be at this value. This parameter can be changed by accessing parameter 4FB. The temperature range of this parameter is 0°F (-18°C) to 190°F (88°C). The default value is 70°F (21°C), (FIG 6-11, page 18).

OA reset outdoor temp at max water temp (4FA) (Out T Hi Reset)

When the outdoor air temperature drops to this point, the water temperature setpoint will be at the setting given by parameter 4FA (if not overridden by the SH user setpoint). This parameter can be changed by accessing parameter 4FC. The temperature range of this parameter is -30°F (-34°C) to 90°F (32°C). The default value is 25°F (-4°C), (FIG 6-11, page 18).

OA reset outdoor temp at min water temp (4FB) (Out T Lo Reset)

When the outdoor air temperature rises to or above this point, the water temperature will be at its minimum setpoint. This parameter can be changed by accessing parameter 4FD. The temperature range of this parameter is -30°F (-34°C) to 90°F (32°C). The default value is 70°F (21°C), (FIG. 6-11, page 18).

Ramp delay (Ramp delay)

This parameter configures the ramp delay feature from off to on. This parameter can be changed by accessing parameter 4FE (FIG. 6-10). The control range of this parameter is 0 = Off, 1 = Ramp Up Only, and 2 = Ramp Up and Ramp Down. The default is 0.

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