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B. Units With Optional Base Rail
Lifting
holes are provided
in optional
base rail as shown
in
Fig. 9. Operating
weights
are shown in Table 1. Refer to rig-
ging instructions
on unit.
Protective
wood support
must
be removed
from unit
before
unit
is mounted
to curb.
Remove
4 screws
that
secure
sup
port above rigging
holes in rails.
Slide support
out through
rectangular
hole in rail. See Fig. 9.
Vl. STEP 6 -- CONNECT CONDENSATE
DRAIN
NOTE:
When installing
condensate
drain
connection
be sure
to comply with local codes and restrictions.
Model PY1P disposes
of condensate
water
through
a 3/4 in.
NPT fitting
which exits through
the compressor
access panel.
See Fig. 2 5 for location.
Condensate
water can be drained
directly
onto the roof in roof
top installations
(where permitted)
or onto a gravel
apron
in
groundqevel
installations.
Install
a field-supplied
conden-
sate trap
at end of condensate
connection
to ensure
proper
drainage.
Make
sure
that
the outlet
of the trap
is at least
1 in. lower than the drain
pan condensate
connection
to pre
vent the pan fi'om overflowing.
See Fig. 10. Prime
the trap
with water.
When
using a gravel
apron,
make
sure it slopes
away fl'om the unit.
If the installation
requires draining
the condensate
water away
fi'om the unit,
install
a 2-in. trap
at the condensate
connec-
tion to ensure
proper
drainage.
See Fig. 10. Make
sure that
the outlet
of the trap
is at least
1 in. lower than
the drain-
pan condensate
connection
to prevent
the pax] fi'om overflow
ing. Prime
the trap with water. Connect
a drain
tube using a
minimum
of 3/4 in. PVC
or 3/4 in. copper
pipe
(all field
supplied)
at the outlet
end of the 2-in. trap. Do not undersize
the tube. Pitch the drain
tube downward
at a slope of at least
one in. for every
10 ft of horizontal
run. Be sure to check the
drain
tube for leaks.
1" MIN,
t
Fig. 10 -- Condensate
Trap
VIII, STEP
7 -- Install
Flue
Hood
The flue hood
assembly
is shipped
screwed
to the
control
box
in the
burner
compartment.
Remove
the
burner
access
panel
to locate
the
assembly.
Fox" units
being
installed
in California
Air Quality
Manage
ment
Districts
which
require
NO x emissions
of 40 nanograms/
joule
or less,
kit
CRLOWNOX001A00
must
be installed.
Install
the flue hood as follows:
1. This installation
must conform with local building
codes
and with
the National
Fuel
Gas Code (NFGC),
ANSI
Z223.1
(in Canada,
CAN/CGA
B149.1,
and B149.2),
or
NFPA
(National
Fire Protection
Association)
latest
re
vision.
Refer to Provincial
and local plumbing
or waste-
water
codes and other" applicable
local codes.
2.
Remove
fl'om
shipping
location.
Place
vent
cap assem
bly over
fine panel.
Orient
screw
holes
in vent
cap with
holes
in the
fine panel.
3. Secure
flue hood
to flue panel
by inserting
a single
screw
on the
right
side,
the
left side,
and
the
top
of the
hood.
VIII.
STEP
8
--
INSTALL
GAS
PIPING
The
gas
supply
pipe
enters
the
unit
through
the
access
hole
provided.
The gas
connection
to the
unit
is made
to the
1/d in.
FPT
gas
inlet
on the
manual
shutoff
or gas
valve.
Install
a gas
supply
line
that
runs
to the
heating
section.
Re
fer to Table
2 and
the
NFGC
for" gas
pipe
sizing.
Do not
zl.se
ca.st iron
pipe.
It is recommended
that
a black
iron
pipe
is
used.
Check
the
local
utility
fox" recommendations
concern-
ing existing
lines.
Size
gas supply
piping
fox" 0.5 in. wg maxi-
mum
pressure
drop.
Never"
zLse pipe
_smaller
than
tire _/z-hr.
FPT
go_s hrlet
on tire unit
ga_s valve.
For natural
gas
applications,
the
gas pressure
at unit
gas cox]-
nection
must
not
be
less
than
4.0
in.
wg
or greater
than
13 in. wg while
the
unit
is operating.
For
propane
applica-
tions,
the
gas
pressure
must
not
be less
than
4.0 in. wg
or
greater
than
13 in. wg
at the
unit
connection.
An
l/a-in.
NPT
plugged
tapping
accessible
for test
gage
cox]-
nection
must
be
installed
immediately
upstream
of the
gas
supply
connection
to the
furnace.
When
installing
the
gas
supply
line,
observe
local
codes
per
raining
to gas
pipe
installations.
Refer
to the
NFGC
ANSI
Z223.1-1988
NFPA
latest
edition
(in Canada,
CAN/CGA
B 149.1,
(2) M86).
In the
absence
of local
building
codes,
adhere
to the
following
pertinent
recommendations:
1. Avoid
low
spots
in
long
runs
of pipe.
Grade
all
pipe
V4 inch
in every
15 ft to prevent
traps.
Grade
all hori-
zontal
runs
downward
to risers.
Use
risers
to connect
to
heating
section
and
to meter.
2.
Protect
all segments
of piping
system
against
physical
and
thermal
damage.
Support
all piping
with
appropri-
ate
straps,
hangers,
etc.
Use
a minimum
of one
hanger
every
6 ft. Fox" pipe
sizes
larger
than
_?z in., follow
rec
ommendations
of national
codes.
3. Apply
joint
compound
(pipe
dope)
sparingly
and
only
to
male
threads
of joint
when
making
pipe
connections.
Use
only
pipe
dope
that
is resistant
to action
of liquefied
petroleum
gases
as specified
by local and/or
national
codes.
Newt
u_se Teflon
talre.
4.
Install
sediment
trap
in riser" leading
to heating
section
per Fig.
11. This
drip
leg functions
as a trap
for" dirt
and
condensate.
5. Install
an accessible,
external,
manual
main
shutoffvalve
in gas
supply
pipe
within
6 ft of heating
section.
6.
Install
groundOoint
union
close
to heating
section
be-
tween
unit
manual
shutoff
and
external
manual
main
shutoff
valve.
7.
Pressure
test
all gas
piping
in accordance
with
local
and
national
plumbing
and
gas
codes
before
connecting
pip-
ing to unit.
NOTE:
Pressure
test
the gas
supply
system
a/terthe
gas sup-
ply piping
is connected
to the
gas
valve.
The
supply
piping
must
be disconnected
from
the
gas
valve
during
the
testing
of the
piping
systems
when
test
pressure
is in
excess
of
0.5 psig.
Pressure
test
the
gas supply
piping
system
at pres-
sures
equal
to or less
than
0.5 psig.
The
unit
heating
section
must
be isolated
from
the
gas
piping
system
by closing
the
external
main
manual
shutoff
valve
and
slightly
opening
the
groundOoint
union.
--9--
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