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LIMIT SWITCH N.C.
WH
VALVE
16/30 200°C RADIX (SIL-A-BLEND) 18 AWG WIRE
CONNECTION NOT USED
LOCAL SENSE BLOWER CONTROL IGNITION WIRING
Note: The ON/OFF switch, located in line with the gas valve, it is not used when a combination circuit breaker and ON/OFF switch
is used.
8500 SERIES Model Identification
NOTE:
The new 85-IV series furnace, through some design changes is quieter than the previous 85 series. It incorporates some
plastic components in the blower housing area to accomplish this. These components are not retro-fit table to other 85
series furnaces.
SAIL SWITCH
WH
N.O.
WH
IGNITION CONTROL
R
R
1
BK
ON/OFF SWITCH
Y
R
R
ELECTRODE
R/O
CODE
COLOR
BK
O
ORANGE
BK
BLACK
MOTOR
BR
BROWN
BL
BLUE
R
RED
Y
YELLOW
G
GREEN
WHITE
W
ALL WIRES ARE 18 AWG UNLESS OTHERWISE SPECIFIED
NOTE: IF ANY OF THE ORIGINAL WIRES AS SUPPLIED
WITH THE APPLIANCE MUST BE REPLACED, IT MUST BE
REPLACE WITH WIRING MATERIAL HAVING A
TEMPERATURE RATING OF AT LEAST 105°C
Figure 3 79/80-II Wiring Single Sense Blower Control
8500 Series Model Identification
MODEL DESCRIPTION
85 Series
BTU/Hr Rate (input)
16=16000
20=20,000
25=25,000
31=31,000
35=34,000
Voltage DC
Gas Type
LP=Propane
Gas Connection
6=3/8" Flare
Option
SB= Side / Bottom
Discharge
Thermostat
W=with
W/O= with out
THERMOSTAT
FIELD
SUPPLIED WIRING
LIMIT SWITCH
N.C.
SAIL SWITCH
SWITCH/BREAKER
CAUTION
: DO NOT HI-POT (DIELECTRIC HIGH VOLTAGE
TEST) THIS UNIT AFTER INSTALLATION. TO DO SO MAY
CAUSE COMPONENT DAMAGE AND VOIDS WARRANTY
OF FURNACE. UNIT 100% FIRE CHECKED.
85
12
DC
LP
SB
15
VALVE
4
3
2
1
MOTOR
IGNITION
CONTROL
BLO
GND
V1
AIR
PWR
HV
ELECTRODE
12 VOLTS DC
W
A
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