Aquacal WATER SOURCE WS03 Installation Manual page 42

Configuring Gas Backup
There are two different ways the gas backup heater can be configured.
24-hour mode - commonly used for commercial applications
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The circulation pump operates continuously.
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The gas heater will activate if the water temperature falls two degrees below the set temperature. When the set
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temperature is reached, the gas heater will be deactivated. See "Configure for 24-Hour Mode" below.
The Heat Pump will continue to maintain the set temperature.
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Scheduled mode - commonly used for residential applications
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The circulation pump operates on the circulation pumps regular on-off schedule.
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The gas heater will activate as needed to ensure that the desired temperature will be reached within the
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circulation pumps schedule. The gas heater will deactivate when the water is warm enough to allow the heat
pump to finish within schedule. The heat pump will then continue to heat the water till the set temperature is
reached. See "Configure for Scheduled Mode" on page 40.
Configure for 24-Hour Mode
Enter "Installer Menus", then proceed
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