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(ONDENSATE
TRAP
FIELD
DRAIN
ATTA(HMENT
Ref?r
to Condensate
Drain
section
%r
recommendations
and
procedures
PRESSURE
SWITCH
TUBING
One collector
box pressure
tube (pink label) is fhctory
connected
to
the pressure
switch
fbr use when
furnace
is installed
in UPFLOW
applications.
This robe MUST
be disconnected
and used for the
condensate
trap relief port robe. The other collector
box pressure
robe (green
label) which
was fhctory
connected
to the condensate
trap relief
port
connection
MUST
be connected
to the pressure
switch
in DOW2qFLOW
or HORIZONTAL
RIGHT
applications.
NOTE:
See Fig. 12 or robe routing
label on main furnace
door to
check
for proper
connections.
Relocate
tubes as described
belom
1. Disconnect
collector
box pressure
tube (pink label) attached
to
pressure
switch.
2. Use smaller
diameter
robe
(factory-supplied
in loose
parts
bag) to extend collector
box pressure
robe (green label) which
was
previously
connected
to
condensate
trap
relief
port
connection
3. Route
extended
collector
box pressure
robe behind
inducer
motor
bracket
then
between
inducer
motor
and
pressure
switch.
4. Connect
collector
box pressure
tube (green
label) to pressure
switch
connection
labeled
COLLECTOR
BOX.
5. Use remaining
smaller
diameter
tube
(g_ctoryosupplied
in
loose parts bag)
to extend
collector
box pressure
tube (pink
label) which
was previously
connected
to pressure
switch.
6. Route this extended
tube (pink label) to condensate
trap relief
port connection.
7. Detem_ine
appropriate
length,
cut, and connect
robe.
8. (lamp
robe to relief port connection.
CONDENSATE
TRAP
FREEZE
PROTECTION
Refer
to Condensate
Drain
Protection
section
for recommendao
tiGriS and procedures.
CONSTRUCT
A WORKING
PLATFORM
Construct
working
platfbrm
where
all required
Nrnace
clearances
are met. (See Fig. 3 and 11.)
UNIT
MAY
NOT
OPERATE
Failure to follow
this caution
may result
in intem_ittent
unit
operation.
The condensate
trap MUST
be installed
below
fire, ace. See
Fig
5 £br dimensions.
The drain
connection
to condensate
trap must also be properly
sloped
to an open
&ain
NOTE:
Vent
pipe length
is restricted
to a n_ininmm
of 5 ft. (See
Table 8.)
NOTE:
A
12-in.
minimum
horizontal
pipe
section
is recomo
mended
with
short (5 to 8 f0 vent systems.
This recomn_endation
is to reduce
excessive
condensate
droplets
from
exiting
the vent
pipe
(See Fig.
11 or 38)
UPFLOW OR DOWNFLOW
V2" MAX
HORIZONTAL
A02146
Fig. 13--Furnace
Location for Proper Condensate
Drainage
LOCATION
Step l--General
This furnace must
*
be installed
so the electrical
components
are protected
from
water.
not be installed
directly
on any combustible
material
other than
wood
flooring
(refkr to SAFETY
CONSIDERATIONS).
*
be located
so combustion-air
and vent pipe maximun_
lengths
are not exceeded.
Refkr to Table
8
*
be located where
available
eteca'ic power
and gas supplies
meet
specifications
on the furnace
rating
plate
*
be attached
to an air distribution
system
and be located
as close
to the center of the distribution
system
as possible
Refer to Air
Ducts
section
*
be provided
with
ample
space
fi_r servicing
and
cleaning.
Always
comply
with
mininmm
fire
protection
clearances
shown
on the Nrnace
clearance4oocombustibles
label.
NOTE:
For upflowidownflow
applications
install
fhrnace
so that
it is level
or pitched
_bnvard
within
1/2Gin. for proper
hmaace
operation.
For horizontal
applications
pitch
1/4-in.
minimum
to
li2oin,
naaximum
forward
to ensure
proper
condensate
&ainage
from secondaw
heat exchangers.
(See Fig. 13.)
When a furnace
is installed
so that supply ducts car_- air circulated
by the filmace
to areas outside
the space
containing
the fine, ace.
the return
air shall also be handled
by &lct(s)
sealed
to filmace
casing
and terminating
outside
tl_e space containing
the fitrnace
to
ensure
there
will
not be a negative
pressure
condition
within
equipment
room or space.
UNIT
DAMAGE
HAZARD
Failure
to _bllow this caution
may result
in intermittent
unit
operation.
Do not install
furnace
in a con'osive
or contaminated
atmoo
sphere
Make sure all combustion
and circulating
air require°
nlents are met
13
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