Abby Normal wrote
Rod Speed wrote
Abby Normal wrote
Rod Speed wrote
Abby Normal wrote
Rod Speed wrote

Corse it will work fine. No reason why the secondary
system cant have a slightly lower than normal temperature
set so it recovers from the setback in a decent time and
then stops and leaves the primary system to get the temp
back up to normal. Thats going to happen fine since the
temp difference is well within its capabilitys.

If you shut the booster off before the central area
gets up to temp and rely on the primary system
then bringing it up to temperature then, this central
area catches up quick compared to the rest of the house.

Wrong. The primary system which keeps the house at a uniform
temp when setback isnt used keeps doing that fine when you
use anything to get the central area back off setback.

Okay, the setback period ends, the primary system is running
steady trying to bring the whole house back up to temperature.
Maybe has to try and bring the whole house up by 5 degrees.

But a second system only serving in the central area also turns on.

So perhaps in one half hours time, the primary system has brought
the whole house temperature up by a degree and the secondary
system has brought up the central area by another 3 degrees.

The secondary system cycles off,

No it doesnt, it hasnt got the central area up to the normal temp, stupid.

and the primary system runs for another hour
has fianlly recovered the 5 degrees of set back.

You are setting the secondary system lower than the
primary system, so the secondary system cylces off first.

ONLY when its got back to the normal temp.

Wrong again, the new central temp is distributed to the other rooms
by the secondary system and the whole system gets back to the
normal temp as fast as the secondary system can get it back.

The new central temp, that is approaching 70F is distributed
to the other rooms by the ductless secondary system.

Just a type, by the primary system, stupid.

This was done by the primary system supplying two degrees of
reheat and the secondary system providing 3 degrees of reheat.

Wrong, as always.

But now, you need to think about where
that primary system thermostat is.

Nope.

If that primary system thermostat is in the central area,
it is satisified. That means the rest of the house gets
no more heat until the central area cools off.

Wrong, it circulates the normal temp air from the central area
to the other rooms while the central area is recovering from
the setback. It just isnt adding much heat to that circulated air.

Well I guess you could run the fan steady
when the primary thermostat was satisfied,

Dont need to, there's a reason the secondary thermostat
is set a little below the normal temp, stupid.

the room temps will slightly rise and this helps cool down the
central area to the point that the primary system comes back on.

Taint gunna happen, because the primary system has been
distributing the increase temp in the central area right thru the
time when the secondary system is coming back off setback.

But the problem is this is a mickey mouse amount of heat

Wrong, as always.

and will be at a lower rate than what the
room loses due to the outdoor ambient.

Complete pig ignorant drivel. If that was so, the system wouldnt
be able to maintain temps properly without setback stupid.

Then the primary system comes on central
area hits 70 and it shuts off again,

Wrong, as always. Its thermostat is set a bit higher
than the one on the secondary system so it will
continue to distribute the central temp to the other rooms,
just like it did right thru the time coming off setback.

The WHOLE HOUSE will come back off the setback at a rate
which is determined by how quickly the secondary system can
provide the heat required to come off the setback.

The secondary system by your own description is set to shut off before
the primary system does. So you have recovered the temperature in the
central area. Not doing much of anything in the rooms tho.

Wrong, as always. The primary system will be distributing that
to the other rooms just like it does with no setback stupid.

So the rooms have recovered two degrees of
heat (actually probably a slight amount more)

The WHOLE HOUSE comes back off the setback
because the central air is still circulated by the
primary system, just like it is when no setback is used.

and the primary system is off.

I'll tell you what, if you want a piping hot wood stove or the
fireplace in the central area and you crank up the heat in that
central area, then by running the fan of a 'primary system'
you are going to get some heat into the rooms. The
central area is going to be quite warm for this to happen.

Wrong again when coming off setback.

Reams of your pathetic attempt at a troll flushed where it belongs.

No wonder the best you have ever been able to
manage is drunken unemployable HVAC ape.