Aquacal GBB BB500, Operation Manual

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Scheduled Mode
When heating the Pool :
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The heat pump will operate for one hour. Then a calculation is made on how fast the water temperature is
rising (a rate of rise).
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If an insufficient amount of time is provided for the heat pump to heat the water, the gas backup heater will
be activated.
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When the set temperature has been reached, the gas heater will deactivate.
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The heat pump will continue to maintain the water temperature.
When heating the Spa :
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If the water temperature is lower than 2° F below the set temperature, and the ambient air temperature is
below 60° F, the gas heater will activate.
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When the set temperature has been reached, the gas heater will deactivate.
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The heat pump will continue to maintain the water temperature.
24 Hour Mode
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This mode is usually used when the circulation pump runs continuously.
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The gas heater will activate when the water temperature falls 2° F below the set temperature and the ambient
air temperature is below 60° F.
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When the set temperature is reached, the gas heater deactivates. The heat pump then maintains the water to
the set temperature. If the water temperature again falls 2° F below the set temperature, the gas backup will
reactivate.
d.1 Using Gas Boost
When a gas backup heater is installed, the user has the option of using a gas boost to heat the water quicker.
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This option is available regardless of the gas heater's configuration mode set by the installer (Scheduled Mode or
24 Hour Mode).
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When the set temperature is reached, the gas heater will deactivate. The heat pump then continues to maintain the
temperature set point. The gas heater will revert to its normal mode (either 24 hour or scheduled).
PLEASE NOTE -
The "Gas boost" option is available regardless of outside air temperature.
This option, however, will only appear in the user menus when the heat pump is actively
heating the water.
See "Setting Heat Mode" on page 6 and
see "Set Temperature" on page 7.
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