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GAS A
SUPPLY
MANUAL J
II
V A" J
A93324
Fig, 28--Typical
Gas Pipe Arrangement
installed
immediately
upstream
of gas
supply
connection
to
ftm_ace
and downstleam
of manual
shutoff
valve.
NOTE:
The gas valve inlet pressure
tap connection
is suitable
to
use as test gauge connection
providing
test pressure
DOES
NOT
exceed
maxin_um
0.5 psig (14-in.
wc)
stated
on gas valve.
(See
Fig. 460
Piping
should
be pressure
and
leak tested
in accordance
with
NFGC
in the United
States or NSCNGPI(
in Canada,
local, and
national
plumbing
and
gas codes
bei:ore
the t_urnace has been
connected.
After all connections
have been made, purge
lines and
check
for leakage
at furnace
prior to operating
furnace.
If pressure
exceeds
0.5 psig (14oin. wc), gas supply
pipe nmst be
disconnected
fiom _i_rnace and capped be_bre pressure
test. If test
pressure
is equal
to or less
than
0.5 psig (14=in.
wc),
turn
off
electric
shutoff switch
located
on furnace
gas valve and accessible
manual
shutoff
valve
before
test.
The
gas
supply
pressure
shall
be
within
the
n_axinmm
and
minimum
inlet
supply pressures
marked
on the rating
plate
with
the f£maace burners
ON and OFF.
Step 8--Electrical
Connections
See Fig 30 £;orfield wiring diagram showing typical field 115=v
and 24-v wiring Check all _hctory and field electrical connections
for tighmess
Field=supplied wiring shall conform with the limitations of 63_T
(35°C) rise
ELECTRICAL
SHOCK
HAZARD
Failure
to follow this warning
could result
in serious
injury or
death.
Blower
access
panel
door
switch
opens
l l5-v
power
to
control
center.
No component
operation
can occur
Do not
bypass
or close
switch with panel
removed.
F[ RNACE
MAY
NOT
OPERATE
Failure
to _bllow this caution
may result
in furnace
operation
stopping
and water
pipes fi'eezing
during
cold weather
Furnace
control
must
be grounded
_br proper
operation
or
contlol
will
lock
out
(ontrol
is
grounded
through
green yellow
wire routed
to gas valve and burner
box screw
115°V WIRING
Befbre
proceeding
with
electrical
connections,
make
certain
that
voltage,
fi'equency,
and phase correspond
to that specified
on unit
rating plate
Also, check to be sure that service provided
by power
supply
is sufficient
to handle
toad
imposed
by this
equipment.
Refkr to rating
plate
or Table 6 for equipment
electrical
specifi-
cations
Make
all
electrical
connections
in
accordance
with
National
Electrical
Code (NEC) ANSI
NFPA
70°2002
and any local codes
or ordinances
that
might
apply
For (anadian
installations,
all
electrical
connections
must be made in accordance
with Canadian
Electrical
(7ode CSA
C22.1
or authorities
having
jurisdiction.
Use a separate,
filsed branch electrical
circuit containing
a properly
sized Nse or circuit breaker
[br this furnace.
See Table 6 for wire
size
and
fuse
specifications.
A disconnecting
means
must
be
located
within
sight fiom
and readily
accessible
to Nmace.
UNIT
SIZE
040-08
040-12
060-08
06042
08048
08042
08048
080-20
10048
tOO-20
120-20
VOLTS--
HERTZ--
PHASE
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
OPERATING
VOLTAGE
RANGE[
Max*
Min*
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
Table 6--ElectricN
Data
MAX
UNIT
AMPS
6.1
7.3
6.1
7.1
9.5
7.6
10.0
14.1
10.2
14.8
14.6
MBN
UNiT
MAX WRRE
WIRE
AMPACBTY?
SRZE
LENGTH {FT)_
8.4
14
44
10.0
14
37
8.4
14
44
9.8
14
38
12.8
14
29
10.4
14
36
13.4
14
28
18.4
12
31
13.5
14
27
19.3
12
30
19.1
12
30
MAX FUSE OR
CKT BKR AMPS**
15
15
15
15
15
15
15
2O
15
20
2O
* Permissible
limits of voltage range at which unit will operate satisfactorily.
t
Unit ampacity = 125 percent of largest operating component's
fu{I load amps plus 100 percent of all other potential
operating components'
(EAC, humidifier,
etc.) full
load amps
$ Length shown is as measured
1 way along wire path between
unit and service panel for maximum 2 percent voltage drop.
** Time-delay
type is recommended.
23
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