Honeywell SV2 Series User Manual page 36

SV2 Series Safety Shut-off Valves
A. Wiring and Conduit Recommendations
WARNING!
Explosion Hazard and Electrical Shock Hazard.
Can cause explosion, serious injury or death.
• Disconnect the power supply making wiring connections to prevent electrical shock and equipment damage.
• More than one power supply disconnect can be involved.
IMPORTANT
• Use only flexible conduit with the SV2 Series valve NEMA 4 / IP66 enclosures.
• Wiring must comply with all applicable electrical codes, ordinances and regulations.
• Wiring must comply with NEC Class 1 (line voltage) wiring.
• Use lead wire which can withstand 90°C (194°F) ambient temperatures.
• Voltage and frequency of the power supply connected to this control must agree with those marked on the device.
• Loads connected to the VPS (valve proving system) Switch and/or POC (proof of closure) Switch, if used, must not exceed
the ratings given in Table
• Separate line and low voltage to avoid signal interference. If using conduit, run line voltage and low voltage in separate
conduit.
B. - C. Remove Electrical Enclosure Cover and Estimate Wiring
NOTE: Even when external C6097 pressure switch(es) are used, the ILK wiring must be run through the valve.
8.
To access the customer wiring terminals, remove the valve front electrical enclosure
retaining screws with the appropriate tool. Set the cover aside.
Note that the SV2 Series valves have unique line voltage, limit, interlock and VPS
(valve proving sequence) wire routing. SV2 Series valves require line voltage power
input at all times to the internal electronics. This is true of all SV2 Series valve
models. Interlock wiring is run through all valve models for the solenoid power
saving feature. Interlock dry contact input / output terminals are also used for the
flame safeguard control ILK string with the Pressure Module for low gas pressure
and high gas pressure functions. A VPS switch contact output is present on
applicable models for when the Pressure Module is used for VPS that is externally
triggered by a separate device. Refer to Fig. 147
36
to Fig. 157 for proper valve wiring.
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