Quote:
Originally Posted by berniebenz
Based upon your reports, apparently the A7 is capable of supplying normal residential DHW requirements.
However, in the winter cold season my DHWH, thru a HX, also supplies my in floor radiant system, a substantially greater demand. During this short cold period my thought is to use the propane fired DHWH as a low set point pre heater and the A7 as the secondary top off heater. Relative set points to be determined.
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I know it's pretty good for supplying hot water for a small family..
(We have a house guest who is also taking showers).
Pre-heating with solar PV is helping save us some kWh, so using a propane
preheater should be great.
However, if the demand from the radiant floor system is high, the A7 may
not be able to keep up. So you might end up heating with mostly propane.
How many BTUh does your radian system need during the day in Dec-Jan?
Will a 7,000 BTUh ASHP be running
all day and half the night?