Page 24
8-Gas Valves GV1
Gas valve GV1 is a two-stage redundant valve. Units are-
valve is energized by the ignition control simultaneously
with the spark electrode. On a call for second-stage heat
-
-
-
quick-opening. .
TABLE 4
GAS VALVE REGULATION FOR KGC UNITS
Max Inlet
Pressure
Natural L.P
Low High Low High
1.6+0.2 3.7+0.3 +0.3 +
9-Spark Electrodes
An electrode assembly is used for ignition spark. The elec-
trode is inserted through holes under the left-most burner.
adjacent burner. The electrode assembly is fastened to
burner supports and can be removed for service without
removing any part of the burners.
from burner to burner until all are lit.
The spark electrode is connected to the ignition control by
both ends of the wire.
NOTE - If the electrode wire is replaced, wire and sup-
pression must be same type of cable. See repair parts
listing for correct replacement.
The spark electrode assembly can be removed for inspec-
tion by removing the screw securing the electrode assem-
bly and sliding it out of unit.
and gapped correctly. Spark gap may be checked with
appropriately sized twist drills or feeler gauges. Discon-
nect power to the unit and remove electrode assembly.
NOTE - IN ORDER TO MAXIMIZE SPARK ENERGY
TO ELECTRODE, HIGH-VOLTAGE WIRE SHOULD
TOUCH UNIT CABINET AS LITTLE AS POSSIBLE.
IMPORTANT
voltage wire should touch unit cabinet as little as
possible
SPARK GAP
SHOULD BE 1/8”
(3mm)
FIGURE 14
10-Flame Sensor FIGURE 15
-
er. The sensor is mounted through a hole in the burner
the left most burner. The sensor assembly is fastened to
burner supports and can be removed for service without
removing any part of the burners.
-
diately or after the eight second trial for ignition. During
-
1-3/4”
(45mm)
3/8”
(10mm)
Gas Flow
FIGURE 15
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