Spare Parts 8663B Page 3
SOLENOID VALVE INTERNAL TO EXTERNAL PILOT FIELD CONVERSION CAUTION: Air supply should be removed before modification. The following procedure should be used to convert a solenoid valve from internal pilot to external pilot pressure operation. All valves come from the factory internally piloted. External pilot function is required if the supply pressure is below the minimum pilot pressure of 29 psi (2-position valves; 44 psi for 3-position models) or if the customer is using vacuum for supply pressure.
For external pilot conversion, remove gasket from valve body as shown in Figures 1 and 2. Flip gasket end-to-end so that Tab "A" will cover the internal pilot port shown in Figure 1. Remove Tab "E" shown in Figure 3. Mount valve to base. Apply a minimum of 29 psi (2-position valves) or 44 psi (3-posi- tion valves) to Port 14. Port 14 will provide pilot pressure to all solenoids regardless of signal or double configuration.
Note: Port 12 dœs not need to be plugged. Port 12 is used only on Double Air Pilot models.
EXTERNAL PILOT CONVERSION
Figure 1
Internal pilot port
For General Information, see Bulletin 8663B For Dimensions, see Dimensions 8663B For Trouble-Shooting, see Trouble-Shooting 8663B For Installation, Operation, and Maintenance Instructions, see Installation 8663B
14
12
Expose this port for external piloting
B
C A
Figure 2
D
E
Internal Pilot Standard Gasket Orientation
A
C
B
Figure 3
D
Remove Tab "E"
Reversed for External Pilot Conversion
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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