North American 1595A-1597A Valve Proof of Closure Switch andVisual Position Indicator
SPECIFICATIONS AND WIRING
Sheet 1597A-3
Wiring:
The Proof of Closure switch position indicator visually and electrically indicates when the valve is either in the closed or open position. When the valve is closed an orange light is visible, when the valve is open a green light is visible.
Do not exceed the switches electrical ratings. Use 14 or 16 gauge wire for at least 75°C (167°F) For NEMA 4 applications, NEMA 4 conduit or wiring methods must be used.
Switch Type SPDT Switch Action
Connect one wire (the COMMON) to the L1 terminal, one to the GROUND terminal, one from the terminal 2 "Proof Terminal" to the Proof of Closure terminal of the Flame Safeguard, and one (the NEUTRAL) to L2 on the switch.
Valve open: Green Neon 120Vac Valve closed: Orange Neon 120Vac
Note: If equipment neutral is not wired to L2 on the switch, the lights will not properly indicate the valve position. The ORANGE light should be on when the valve is closed. The GREEN light should be on when the valve is open (FM and NPFA 86 requirement). Do not wire this switch to close a circuit that will directly power another safety shutoff valve. Doing so could result in a safety valve being energized and opened rather than remaining closed. N
Contact Rating
10 A res, 8 FLA, 48 LRA @ 120 Vac
Enclosure
NEMA Type 4
L1
N.O H.S. Makes with valve closed *120VAC
Use of interposing relays will be re- quired to isolate valve position lamps from BMS circuitry.
CR 1
CR1: Contact closed when valve is closed.
CR2: Contact closed when valve is Not closed.
NOTE: Open and closed lamp voltage must be compatible with circuit logic. Typically 120VAC Neon if 24VDC is required a special lamp is needed. Use of interposing relays may be required to support hardwired BMS circuitry.
CR 2
* 120VAC Neon unless otherwise specified
DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC. IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL .
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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