Lennox G50UH Series, Информация об устройстве

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TABLE 2
SURELIGHT BOARD 56L83 & 97L48 J156 (J2)
TERMINAL DESIGNATIONS
PIN # FUNCTION
1 Ignitor
2
Not Used
3
Ignitor Neutral
4
Combustion Air Inducer Line Voltage
5
Not Used
6 Combustion Air Inducer Neutral
TABLE 3
SURELIGHT BOARD 56L83 & 97L48 J58 (J1)
TERMINAL DESIGNATIONS
PIN # FUNCTION
1 Primary Limit In
2 Gas Valve Common
3 Roll Out Switch Out
4 Gas Valve 24V
5 Pressure Switch In
6 Pressure Switch and Primary Limit Out
7 Not Used
8 Roll Out Switch In
9 Ground
5. SureLight Integrated Ignition Control
(A92) 69M15
The Lennox SureLight ignition system consists of ignition
control (figure 8), sensor (figure 10) and ignitor (figure
12). The ignition control and ignitor work in combination
to ensure furnace ignition and ignitor durability. The igni-
tion control, controls all major furnace operations. The
ignition control also features two LED lights (DS1 red and
DS2 green) for troubleshooting and two 120 volt accesso-
ry terminals each rated at (1) one amp. A 24 volt accesso-
ry terminal rated at 0.5 amps is also provided. Table 4
shows 24 volt and 120 volt control terminal designations.
Tables 5 and 6 show jack plug terminal designations. See
table 8 for troubleshooting diagnostic codes. Units
equipped with the SureLight system can be used with ei-
ther electronic or electro−mechanical thermostats without
modification. The SureLight ignitor is made of durable sili-
con−nitride. Ignitor longevity is also enhanced by voltage
ramping by the ignition control. The ignition control finds
the lowest ignitor temperature which will successfully
light the burner, thus increasing the life of the ignitor. Each
time power is applied to the furnace, the SureLight board
performs a selfcheck.
TABLE 4
SURELIGHT BOARD 69M15 TERMINAL
DESIGNATIONS
COOL Blower − Cooling Speed (120V)
HEAT Blower − Heating (120V)
PARK Unused blower lead not energized
FAN Continuous Low Blower Speed
EAC Accessory Terminal (120V)
XFMR Transformer (120V)
LINE Input (120V)
HUM Heat Only Accessory (120V)
5 Terminals
120 Volt Neutral
FS Flame Sensor
24V HUM Heat Only Accessory (24V)
TABLE 5
SURELIGHT BOARD 69M15 TERMINAL
DESIGNATIONS
PIN # FUNCTION
1 Combustion Air Inducer Line Voltage
2 Ignitor Voltage
3 Combustion Air Inducer Neutral
4 Ignitor Neutral
SURELIGHT INTEGRATED CONTROL BOARD
FIGURE 8