The document discusses four jumpers on a system board that can be positioned to change parameters of an equipment system. Jumper 1 sets either a high or low current limit. Jumper 2 selects whether temperature is displayed in Fahrenheit or Celsius. Jumpers 3 and 4 determine if the pumps run as single or two speed pumps. Positioning the jumpers allows customizing the system's operation based on electrical specifications and pump configuration.

1. Standard Low Level Programming
It is possible to change the parameters of the Equipment System by positioning specific jumpers located on the system
board.
Jumper Location
Jumper 1 - Current Limiting Option
Position 1 (High Current / 240vac): There is no current restriction. This allows the heater to operate with the pump (both pumps on a
dual pump system) in high speed.
Position 2 (Low Current / 120vac): The system will not turn the heater on when the pump is in high speed (one of the pumps on a
dual pump system). The heater On indicator will flash on the display to tell the user that there is a call for heat but the heater is not
allowed to start.
Jumper 2 - Temperature Unit
Position 1: Temperature will be displayed in Fahrenheit degrees.
Position 2: Temperature will be displayed in Celsius degrees.
Jumper 3 - Pump 1
Position 1: Two Speed Pump
Position 2: Single Speed Pumps
Jumper 4 - Pump 2
Position 1: Two Speed Pump
Position 2: Single Speed Pumps
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