TwinTemp
Hydronic
Heating/
Water
Heating
Operating
Instructions
For
maximum
heat
and
hot
water
output,
it
is
recommended
to
use
the
LPG
mode
of
operation
in
addition
to
the
120
volt
electric
element.
Electric
element
operation
should
be
used
for
minimal
hot
water
demand
such
as
washing
hands
or
dishes.
It
is
not
necessary
to
have
the
water
system
filled
to
use
the
space
heating
system,
but
the
heating
system
must
be
filled
with
anti
‐
freeze.
To
Start
Up
System:
Turn
on
the
propane
supply.
Turn
on
12
volt
power
switch
on
the
right
side
of
the
TwinTemp
cabinet.
Turn
on
12
volt
power
switch
on
coach,
if
applicable.
Burner
will
start
‐
up
and
system
will
be
up
to
operating
temperature
in
approximately
10
‐
15
minutes
depending
on
position
of
Summer/winter
valve.
Summer
Operation
Position
Summer/Winter
valve
in
Summer
position.
When
the
space
heating
function
of
the
TwinTemp
is
not
needed,
the
heated
anti
‐
freeze
should
not
be
circulated
to
the
blowers.
To
prevent
this
circulation,
the
Summer/Winter
by
‐
pass
valve
should
be
turned
¼
turn.
When
heating
is
again
needed,
this
valve
handle
should
be
turned
¼
quarter
turn
from
the
Summer
position
to
the
Winter
position.
This
adjustment
should
only
be
needed
twice
a
year
for
summer/
winter
operation.
Summer
Winter
For
Space
Heating:
Position
Summer/Winter
valve
in
Winter
position.
Turn
on
main
coach
thermostat
and
set
to
desired
temperature.
When
the
system
reaches
set
temperature
the
blowers
will
turn
on
and
heat
is
delivered.
When
room
reaches
set
temperature,
the
pump
and
blowers
for
that
zone
will
go
off.
If
tank
temperature
is
below
set
temperature
the
burner
will
stay
on
until
tank
reaches
set
temperature.
NOTE:
the
heat
register
blowers
will
not
activate
if
the
tank
temperature
is
below
160
˚
F.
This
assures
that
the
hot
water
function
takes
priority
under
heavy
usage
conditions.
Blowers
will
resume
operation
when
tank
returns
to
operating
temperature.
