[Equest-users] Gas Water Heater as a backup for heat pump water heater

[fraij]

Hello,Can anybody help me out by advising how to control a gas water heater as a backup for a heat pump water heater. I could not find in the gas water heater window option to control its operation based on outside temperature for example.Any help will be highly appreciated Thanks all.RegardsAhmadSent from my Galaxy
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