Advertisement
'llltlta()lt.
Series 2
WATER BOILER -
Boiler Manual
Connect breeching
(continued)
Chimney venting
(continued)
Connect
breeching:
IAWARNINGI Long
horizontal
breechings,
excessive
number of
tees
and
elbows or
other
ob-
structions restricting
combustion gas
flow
can result in possibility
of
condensation,
flue
gas
leakage
and
carbon monoxide
emissions, which can lead to severe
per-
sonal
injury
or
death.
1.
Connect full-sized
breeching
when
possible.
See
Table
2,
page
12,
and
Figure
5,
below.
2. Connection
must be made above bottom of chimney
to
avoid
blockage.
Breeching
must not
enter
chim-
ney
far enough
to cause
obstruct
ion.
Use
thimble
or
slip
joint
where
breeching
enters
chimney to allow
removal for
cleaning.
3. When burner
and
boiler are properly installed,
breeching draft
will
be
approximately -0.0 l" to
-0.02" W.C.
Install barometric control in
breech-
ing, per
control
manufacturer's
instructions, when
excess
draft needs
to
be relieved or to comply
with
applicable
codes and
regulations.
Use
draft
gauge
to
adjust
proper
opening.
NOTICE
The Ultra
Oil boiler is capable
of
being
pressure fired. Overfire pressure may be
positive
even
with
a
negative pressure
in the
chimney. See
the Ratings
table on
page
39
for boiler draft
loss.
IAWARNIN
G
I The pressure
in
the
breeching and
chim-
ney must always
be
negative
unless
the
chimney and breeching
are
constructed
of
vent
piping designed for pressurized
venting.
4.
An induced draft fan for the chimney may be
neces-
sary
if:
Excessive resistance
to flow
of combustion gases can
be
expected.
Cross-sectional area of chimney
is
smaller
than
mini-
mum recommended.
Chimney
height is
less than
recommended.
5.
When
using an
induced draft
fan:
Seal
all
vent
joints.
• Interlock burner
with fan operation.
Figure 5
Breech connection,
typical,
for gravity venting into
chimney
Part
number
550-141-987/0912
----------
--
...
----------
...
U0011
'
'
I
I
............
'
'
' '
'
'
Typical
locations for barometric
draft
control
(also see draft
control
manufacturer's instructions)
13
- Quick Links:
- U0-5
Hide quick links:
Advertisement
