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ELECTRIC
DISCONNECT
SWITCH
®
A93033
Fig. 28--Disconnect
Switch
and Furnace
ELECTRICAL
SHOCK HAZARD
Failure to follow this warning could result in serious injury or
death.
Blower access panel door switch opens l15=v power to
control center No component operation can occur Do not
bypass or close switch with panel removed
FURNACE
MAY
NOT
OPERATE
Failure 6o fbllow
this caution
may result
in furnace
operation
stopping
and water
pipes
freezing
during
cold weather.
Furnace
control
must
be grounded
for proper
operation
or
control
will
lock
out.
Control
is
grounded
through
green yellow
wire routed to gas valve and burner
box screw
115-V WIRING
Before
proceeding
with electrical
connections,
make
certain
that
voltage,
fiequency,
and phase
con'espond
to d-_at 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.
Re_kr to rating
plate
or Table
4 for equipment
electrical
specifi-
cations.
Make
all
electrical
connections
in
accordance
with
National
Electrical
Code (NEE)
ANSIiNFPA
70°2002
and any local codes
or ordinances
that
might
apply
For Canadian
installations,
all
electrical
connections
must be made in accordance
with Canadian
Electrical
(:ode
CSA (722.1 or authorities
having
jurisdiction.
FIRE
HAZARD
Failure
to _bllow this warning
could
result
in serious
injury,
death, or property
damage.
Do not connect
aluminum
wire between
disconnect
switch
and f_/rnace. Use only copper
wire
(See Fig. 28)
"Use a separate,
fused branch
electrical
circuit containing
a properly
sized fuse or circuit breaker
for this furnace
See Table 4 _k_rwire
size
and
filse
specifications.
A disconnecting
means
must
be
located
within
sight fiom
and readily
accessible
to furnace
NOTE:
Proper
polarity
must be maintained
for 115-v wiring.
If
polarity
is incorrect,
control
center LED
status indicator
light will
flash rapidly
and I:umace
will NOT
operate.
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2i
ELECTRICAL
SHOCK
AND FIRE
HAZARD
Failure
to follow
this warning
could
result
in serions
inju U,
death,
or property
damage.
The cabinet
MUST
have an uninterrupted
or unbroken
ground
according
to NEC ANSI
NFPA
70°2002
and Canadian
Elec=
tdcal
(7ode CSA (22.1
or local codes
to minimize
personal
injm T if an electrical
fhult should
occur.
This may consist
of
electrical
wire or condtlit
approved
for electrical
ground when
installed
in accordance
with existing
electrical
codes. Do not
use gas piping
as an electrical
ground.
J=Box Relocation
1. Remove
2 screws
holding
auxiliary-
J=box. (See Fig. 29.)
2
Rotate
J-box
180 _>and attach
box
to left side,
using
holes
provided
ELECTRICAL
SHOCK
AND FIRE
HAZARD
Failure
to follow
this warning
could
result
in serions
inju W,
death,
or property
damage
If manual
disconnect
switch
is to be mounted
on fimaace,
select
a location
where
a drill or Pastener
will not contact
electrical
or gas components.
24-V WIRING
Make field 24-v them_ostat
connections
at 24°v terminal
block
on
furnace
control
center
For proper
cooling
operation,
Y wire from
thermostat
MUST
be connected
to Y terminal
on [ku_aace control
center,
as shown in Fig. 27. The 24=v terminal
block
is marked
fbr
easy
connection
of field wiring.
(See Fig
30.) The 24-v
circuit
contains
a 3=amp, automotive=type
fuse located
on fk/rnace control
center
(See Fig. 31)
Any electrical
shorts
of 24=v wiring
dnring
installation,
service,
or maintenance
may
cause
litse to blow
If
fuse replacement
is required,
use only
a fuse of identical
size (3
amp)
and type
The control
will flash
code 24 when
_k/se needs
replacement
NOTE:
Use AWG No
18 color-coded
copper
them_ostat
wire fbr
lengths
up to 100 ft For wire lengths
over
100 _, use AWG No.
1d wire.
ACCESSORIES
1
Electronic
Air Cleaner
(EAC)
Two quickoconnect
terminals
marked
EAC-I
and EA(=2
are
provided
_br EAC connection.
(See Fig. 31 ) These tem_inals
are energized
with
115v (i 0=amp maximnm)
during
blower
motor operation.
UNIT
DAMAGE
HAZARD
Failure
to follow
this caution
may result
in unit component
damage
DO NOT
connect
f_arnace control
HUM
terminal
to HI_M
(humidifier)
terminal
on Thermidistat
TM,
Zone
Controller
or
similar
device.
See Thermidistat
TM,
Zone
(ontloller,
thernao=
stat,
or
controller
manu_itcturer's
instructions
for
proper
connection,
2 Humidifier (HUM)
A quick°connect
terminal (HUM) and screw terminal (Cox1
24v) are provided for 24v humidifier connection
(See Fig.
31,) HUM tem_inal is energized with 24v (0 5-amp n_axin_un_)
when gas valve is energized,
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