M380 hot water

[John Suter]

Hi Jim,

--- scoggins_jim <scoggins.j@...> wrote:
> 04 M380
>
> How does one do
> the hot water without having the whole hurricane
> heating system on,
> i.e. heating hot water with just electric without
> burning diesel? I
> thought I had it figured out by having two of the
> hot water circuit
> breakers on but was only able to get about 10
> seconds of hot water.

> How does LX/LXI do it?

I would guess the M380 would be similar to the LXi.
The LXi Aqua-Hot system electric portion has a circuit
breaker in the main panel and a diesel master control
switch on the dash (generally labeled "hydronic...").
When the coach engine in not running, and all switches
are on, electric is the primary heating source, next,
diesel - meaning the diesel will fire to a certain
temp (along with the elect) and the elect will "top it
off," if necessary. Said another way, if hot water
consumption reduces the temp below the elect temp
maintenance level, the diesel unit will fire.

During winter heating months, one way to reduce the
chance of running out of hot water during a shower, is
to use both diesel and elect to heat the water; and
turn off the main coach heating control switch located
in the kitchen wall thermostat. Trying to heat both
the coach and the shower water for those few shower
minutes using a 50,000 max BTU burner is "pushing
string uphill."

John Suter
2000 LXi



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