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A93043
Fig. 14_Prohibit
Installation
on Back
--€
UNIT
DAMAGE
HAZARD
This gas fire, ace may be used %r construction
heat provided
that:
-The
hu'nace
is permanently
installed
with
all electrical
wiring,
piping,
air
filters,
venting
and
ducting
installed
according
to these installation
instructions.
A return
air duct
is provided,
sealed
to the
furnace
casing,
and
tem_inated
outside
the
space
containing
the Nrnace.
This
prevents
a
negative
pressure
condition
as created
by the circulating
air
blower,
causing
a flame rollout
and/or
&awing
combustion
products
into d-_estructure.
-The t\lmace
is controlled
by a thermostat.
It may not be "hot
wired"
to provide
heat continuously
to the structure
without
thermostatic
control.
-Clean
omside
air is provided
for combustion.
This
is to
minimize
the con'osive
eff)cts
of adhesives,
sealers and other
constr_ction
materials.
It also prevents
the
entrainment
of
dwwall
dust into combustion
air, which can cause fouling
and
plugging
of furnace
components.
-The temperature
of the retmn
air to the fhrnace
is maintained
between
55_T (13%)
and
80°F
(27%),
with
no evening
sethack
or shutdown.
The
use
of the
filrnace
while
the
structure
is under
construction
is deemed
to be intem_ittent
operation
per our installation
instructions.
-The air temperature
rise is within the rated rise range
on the
fm'nace
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
nmst
be either
changed
or thoroughly
cleaned
prior to occupancy.
-The fi/rnace,
ductwork
and filters are cleaned
as necessary
to
remove
&ywall
dust and construction
debris tiom all HVA(
system
components
after construction
is completed.
-After
construction
is complete,
verii}'
fhmace
operating
conditions
including
ignition,
input rate, temperatt_re
rise and
venting,
according
to the manufhcturer's
instructions.
Step
2--Furnace
Location
Relative
to Cooling
Equipment
_he cooling
coil must be installed
parallel
with or on downstleam
side of furnace
to avoid
condensation
in heat exchanger.
When
installed
parallel
with a f:tmaace, dampers
or other
means
used to
control
flow of air shall be adequate
to prevent
chilled
air tiom
entering
filrnace.
If dampers
are manually
operated,
they must be
equipped
with
a means
to prevent
operation
of either unit unless
damper
is in fi/ll-heat
or fi/tl=cool position.
14
_32°F
MINIMUM INSTALLED
/
AMBIENT OR FREEZE
_\\
_! PROTECTION REQUIRED
A93058
Fig. 15--Freeze
Protection
FIRE,
INJURY
OR DEATH
HAZARD
Failure
to %llow
this warning
could
result
in fire, personal
iajury,
or death
Do
not
install
t'umace
on its back.
(See
Fig.
14.) Safety
control
operation
will be adversely
affected
Never
connect
return-air
ducts to back of fi/rnace.
[N[T
DAMAGE
HAZARD
Failure
to [bllow
this caution
may result
in minor property
or
unit damage.
If this f_/rnace is installed
in an unconditioned
space
where
ambient
temperatt_res
may be 32_>For lower, fieeze protection
measures
must
be taken.
(See Fig
15.)
Step
3--Hazardous
Locations
[]
FIRE,
EXPLOSION,
INJURY
OR DEATH
HAZARD
Improper
location
or inadequate
protection
could result in fire
or explosion
When
the
51mace
is installed
in a residential
garage_
the
burners
and ignition
sources
must
be located
at least
18 in.
above the floor.
The filrnace
must
be located
or protected
to
avoid
physical
damage
by vehicles.
When
the 141mace is
installed
in a public
garage,
airplane
hangar,
or other building
having
a hazardous
atmosphere,
the fi/rnace
must be installed
in accordance
with the NFG(
or NSCNGPIC.
(See Fig. 16.)
AIR FOR COMBUSTION
AND VENTILATION
Provisions
fbr adequate
combustion,
ventilation,
and dilution
air
must he provided
in accordance
with:
*
U.S. Ins_alla{ions:
Section
8.3 of the NFGC,
Air for Combuso
tion
and Ventilation
and
applicable
provisions
of the local
building
codes
*
(anadian
Installations:
Part 7 of the NS(NGPI(,
Venting
Systems
and Air
Supply
for Appliances
and all authorities
having
jurisdiction
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