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BHT/CLR
BLOWER
MOTOR SPEED CHANGE
RELAY, SPDT
LSI, 2
LIMIT SWITCH,
AUTO-RESET,
SPST (N.C.)
E
BLWR
SLOWER
MOTOR RELAY, SPST - {NO.)
OL
AUTO-RESET
INTERNAL
MOTOR
OVERLOAD
BLWM
BLOWER
MOTOR, PERMANENT
- SPLIT - CAPACITOR
TEMPERATURE
SWITCH
(N.Cg
C
BUSS
BLOCKED
VENT SHUTOFF
SWITCH,
MANUAL-
RESET SPST-(N C.)
PCB
PRINTED
CIRCUIT
BOARD
CONTROL
CAP
CAPACITOR
PL
11-CIRCUIT
PCB CONNECTOR
CPU
MICROPROCESSOR
AND CIRCUITRY
2-CIRCUIT
CONNECTOR
E
....................
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T_NC)
_23
2_IRCUIT
HSl ..........
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EAC-1
ELECTRONIC
AIR CLEANER
CONNECTION
(115 VAC 1.0 AMP MAX)
PRS
PRESSURE
SWITCH
SPST-(N.O.)
SAC-2
ELECTRONIC
AIR CLEANER
CONNECTION
(COMMON)
TEST/TWIN
COMPONENT
TEST & TWIN TERMINAL
FRS 1 2
FLAME ROLLOUT
SW-MANUAL
RESET
SPST-(N C,)
FSE
FLAME-PROVING
ELECTRODE
TRAN
TRANSFORMER-If
EVAC/24VAC
FU 1
FUSE,
3 AMP, AUTOMOTIVE
BLADE TYPE,
FACTORY
INSTALLED
--0--
JUNCTION
FU 2
FUSE OR CIRCUIT
BREAKER
CURRENT
INTERRUPT
DEVICE
O
UNMARKED
TERMINAL
(FIELD
INSTALLED
& SUPPLIED)
GND
EQUIPMENT
GROUND
_
PCB CONTROL
TERMINAL
GV
GAS VALVE-REDUNDANT
_
FACTORY
WIRING
(t 15VAC)
GVR
GAS VALVE RELAY, SPST-(N O )
FACTORY
WIRING
(24VAC)
HSI
HOT SURFACE
IGNITER (115 VAC)
HSIR
HOT SURFACE
IGNITER RE Ay, SPST-(N O.)
_-
FIELD WIRING
(lfl 5VAC)
HUM
24 MAC HUMIDIFIER
CONNECTION
(05 AMP MAX)
....
FIELD WIRING
(24VAC)
IDM
INDUCED
DRAFT MOTOR, SHADED-POLE
CONDUC
fOR ON CON [ROL PCB
IOR
INDUCED
DRAFT MOTOR R Eb_,y, SPST-(N.O)
_
FIELD WIRING
SCREW TERMINAL
ILK
DOWER
ACCESS
PANEL INTERLOCK
SWITCH,
SPSI-(N.O.)
.j_.
J1
BLOWER
- OFF DELAY
JUMPER
SELECTOR
- HEATING
_
FIELD
EARTH GROUND
J2
BLOWER
- OFF OELAY JUMPER - COOLING
_
EQUIPMENT
GROUND
JB
JUNCTION
BOX
LED
LIGHT-EMI_ING
DIODE
FOR STATUS
CODES - RED
_
FIELD
SPLICE
LOPS
LOW
GAS PRESSURE
SWITCH
SPST-{N O.)
_
)---_
PLUG RECEPTACLE
(NATURAL
&
PROPANE
GASES)
2 i
NEUTRAL
_
EQUIPMENT GROUND
m
SPARE-1
_
MEDLO
CAP
HEAT
MED HI
-
NOTE #5
START
L2
L
COOL
BLWM
EAC-2
IbR
HSI
......
--
•
)--
--
BVSS
I
|
FRS1
BSS
(WHEN USED)
F U1 {
NO
PL14
-
-_
FRS2
LS1
NOTE #10
w@
:P:_1
(WHEN USED}
II
_.,_
(WHEN USED)
_q_
/
PL1-5
_#3
--_::=>
FL-_
C
4v
PCB
NOTE#5
I_PL-7
NOTES:
1.
If any of the odginal
equsment
wre
is replaced
use wire rated
for 105"C.
2. Use only copper
wire between
file
disconnect
switch ahd the furnace
iWlction
box (JB).
3. This wre
must be connected
to furnace
sheet mefal for control to prove flame.
4. Symbols
are eleetdcal
representat
on only.
5. Solid
lines inside
PCB are pdn_ed c_mtBt board conductors
and are not included
n legend.
6. Replace
only with a 3 amp fuse.
7.
Inducer (IDM) and blower
(BLWM)
motors
contqin
internal
auto-reset
thermal
overload
switches
(eL).
B. Neutral
connections
are intemhangeable
within
the
NEUTRAL
connector
block.
9. Blower
motor
speed selections
are for average
conditions,
see installaton
instructions
for details
on
optimum
speed
selection.
10. Factory
connected
when
BUSS (Chimney
Adaptel
Accessory
Kt) is not installed.
11. Factory
connected
when LOPS
is not used.
12. Ignition-lockout
will occur after fo_r consecutive
unsuccessful
tdals-for-ignition.
ConBol
will
auto-reset
after three
hours.
13. Blower-on
delay:
gas heating
25 seconds,
cool ng or heat
pump
2 seconds.
14. Blower-off
delay:
gas heating
selections
are 90,120,150
or 180 seconds,
cooling
or
heat pump
90 seconds
or 5 seconds
when J2 is out.
_,.
15. Low Speed
Tap on 4 speed motor
only.
339937-201
REV,
A_
A13111
Fig. 41 - Wiring
Diagram
35
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