Advertisement
INTRODUCTION
The
OBMAA
furnace
is capable
of 3 heat/airflow
combinations
by a simple nozzle
change.
Inputs
of 70.000,
84000,
and 98,000
BTUH
are possible.
This furnace
is a multipoise
unit. It may be installed
in the upflow,
downflow,
or horizontal
configuration.
PERSONAL
INJURY
AND UNIT
DAMAGE
HAZARD
Failure
to follow
this caution
may
result
in personal
injury,
equipment
damage
or improper
operation.
This oil furnace
may be used for construction
heat provided
that:
-The
furnace
is permanently
installed
with
all electrical
wiring,
piping,
venting
and
ducting
installed
according
to
these
installation
instructions.
A return
air duct is provided,
sealed
to the furnace
casing,
and terminated
outside
the space
containing
the
furnace.
This
prevents
a negative
pressure
condition
as created
by the circulating
air blower,
causing
a
flame roll-out
and/or
drawing
combustion
products
into the
structure.
-The
furnace
is controlled
by a thermostat.
It may not be "hot
wired"
to provide
heat continuously
to the
structure
without
thermostatic
control.
-Clean
outside
air is provided
for combustion.
This
is to
minimize
the corrosive
effects of adhesives,
sealers and other
construction
materials.
It also
prevents
the
entrainment
of
drywall
dust into combustion
air, which can cause fouling
and
plugging
of furnace
components.
-The
temperature
of the return air to the furnace
is maintained
between
60"F
(15°C)
and
80°F
(27°C)
with
no evening
setback
or
shutdown.
The
use
of
the
furnace
while
the
structure
is under
construction
is deemed
to be intermittent
operation
per our installation
instructions.
-The
air temperature
rise is within the rated rise range
on the
furnace
rating
plate,
and the firing
rate has been
set to the
nameplate
value.
-The
filters
used
to
clean
the
circulating
air during
the
construction
process
must
be either
changed
or thoroughly
cleaned
prior to occupancy.
-The
furnace,
ductwork
and filters are cleaned,
as necessary,
to
remove
drywall
dust and construction
debris from
all HVAC
system
components
after construction
is completed.
-After
construction
is complete,
verify
furnace
operating
conditions
including
ignition,
input rate, temperature
rise, and
venting,
according
to the manufacturer's
instructions.
The furnace
is shipped
in the upflow configuration
and instructions
on how to change to other positions
are included
in this manual.
It
requires
a line
voltage
(115 vac)
connection
to control
box,
a
thermostat
hook-up
as
shown
on
wiring
diagram,
oil
line
connection(s),
adequate
duct work,
and connection
to a properly
sized vent.
LOCATION
General
This
furnace
is approved
for reduced
clearances
to combustible
construction,
therefore,
it may be installed
in a closet
or similar
enclosure.
Since
this
unit
may
be
installed
in
an
upflow,
counterflow,
or horizontal
position,
it may be located
in a basement
or on the same level as area to be heated.
In any case, unit should
always be installed
level and must not slope toward
the front.
ELECTRICAL
SHOCK
OR UNIT DAMAGE
HAZARD
Failure
to follow
this warning
could result
in personal
injury,
death and/or property
damage.
This furnace
is not watertight
and is not designed
for outdoor
installation.
This furnace shall be installed
in such a manner
as
to
protect
electrical
components
from
water.
Outdoor
installation
would
lead to a hazardous
electrical
condition
and
to premature
furnace
damage.
FIRE,
EXPLOSION
HAZARD
Failure
to follow
this warning
could
result
in personal
injury,
death and/or property
damage.
For attic installation,
it is important
to keep insulation
12 in.
(304.8
ram) or more away from
any furnace
openings.
Some
types of insulating
materials
may be combustibles.
In a basement,
or when
installed
on floor
(as in a crawlspace),
it is
recommended
that unit be installed
on a concrete
pad that is 1 - 2
in. (25.4 - 50.8 mm)thick.
The furnace
should
be located
as close
as possible
to chimney
or
vent
in order
to
keep
vent
connections
short
and
direct.
The
furnace
should
also be located
as near as possible
to center of air
distribution
system.
CONFIGURATIONS
Upflow
Installation
The return air opening
may be located
on either side of the furnace.
Care should be taken not to damage
the wires inside while cutting
the opening.
Install the filter rack supplied
with the unit according
to the instructions
provided
with
it. It is also recommended
to
install the blower
door before
handling
or moving
the unit.
In
cases where
the return
air enters through
the base of the furnace,
the floor return base (KLADC0301098)
must be used.
t t t
WARM AIR
AIR CHAUD
©
Filter rack 20" x 20"
]
508mm x 508mm
1
AIR
RETURN
RETOUR
D'A_R
floorC°mbustible ]
A07643
Fig. 4 - Upflow
Configuration
Downflow
Installation
When
the furnace
is installed
in the
downflow
position
on a
combustible
floor,
the
clearances
from
combustibles
must
be
adhered
to. The downflow
base KLASB0701098
can be used to
ensure
these
clearances.
Refer
to
Fig.
5
and
the
installation
instructions
provided
with the base.
In cases where
the return
air enters through
the furnace
bottom
inlet, the floor return base KLADC0301098
must be used.
Advertisement
