1701ULTRA(EC)GBEN, p. 17/29
9.4
GAS
CONVERSION
The
ULTRA/ULTRA
EC
heaters
are
designed
to
operate
on
natural,
propane
or
butane
gas
and
will
be
supplied
for
the
gas
type
ordered.
In
the
event
a
site
conversion
is
required,
it
is
necessary
to
change
the
burner
jet
and
gas
valve.
Affix
new
data
plate
and
gas
type
label.
Upon
completion
of
conversion
recommission
the
heater.
We
hereto
refer
to
the
section
‘Ignition
system’
Changes
to
carry
out
:
1.
From
natural
gas
to
propane
:
A
propane
conversion
kit
[part
number
03
49950
‐‐‐‐‐‐
]
will
have
to
be
purchased
in
order
to
perform
the
conversion.
The
conversion
kit
consists
of
the
propane
restrictor
and
the
connector
(see
item
3
for
more
details)
that
will
provide
the
necessary
speed
for
the
exhaust
blower.In
order
for
the
unit
to
be
set
for
propane
,
the
gas
valve
will
be
removed
from
the
venturi
by
removing
the
three
fixing
screws.
The
brass
restriction
will
be
placed
inside
the
O
‐
ring
as
depicted
in
figure
13
and
the
gas
valve
will
be
repositioned
on
the
venturi.
Throttle
adjustments
and
CO
2
measurements
will
have
to
be
made
in
order
to
obtain
the
recommended
CO
2
value.
For
details
please
see
the
CO
2
/Throttle
adjustment
section
9.3.
Attention
:
Always
consult
the
appropriate
instruction
with
reference
xxxx0311
1
/xxxx0311
2
‐
EN
providing
all
needed
data
and
information
to
perform
the
conversion..
2.
From
propane
to
natural
gas
In
order
for
a
heater
set
on
propane
to
be
converted
to
natural
gas
,
the
brass
restriction
will
be
removed
and
throttle
adjustments
*
and
CO
2
adjustments
(*)
remade
in
order
to
achieve
the
normal
values
for
natural
gas.
Figure
14
:
Natural
gas
Figure
15
:
Propane
(*)
If
an
error
is
made,
and
the
unit
has
only
the
brass
propane
restrictor
removed
without
having
the
combustion
values
checked,
permanent
damage
to
the
unit
will
occur.
3.
Connector
Inscription
on
the
connector
indicates
the
size
of
the
unit
and
the
type
of
gas
to
be
used.
Example:
in
photo
16
the
unit
is
a
ULTRA/ULTRA
EC
50
set
for
natural
gas.
The
connector
for
propane
use
is
provided
with
a
red
wire
mentioning
the
inscription
PROP
(see
photo
17).
Figuur
16
Figuur
17
Propane
restriction
Gas valve
Venturi
Rubber
O-ring
Fixing
screws
Figure
13
Propane
restriction
