Valve Proving System - VPS 504 S04, connection to screw terminals, 110 Vac
VPS 504 S04 (221327)
- Max. Vol 0, 14 cu ft (4 Liters)
- 110 Vac (+10% / -15%), 50 Hz, SPDT Sw 4A @ 120 Vac
- IP 54
- Formerly: 221-327
Description
The DUNGS VPS 504 S04 is a valve proving system for DMV series safety valves. It checks
that both safety shutoff valves in a DMV series gas train are fully closed before either a
system startup and/or after system shutdown when wired and interlocked to a suitable flame
safeguard control. The VPS will halt the startup sequence to a piece of gas burning
equipment if it detects an open safety shutoff valve, thus preventing ignition under dangerous
conditions.
Application
The VPS 504 S04 is recommended for industrial and commercial heating applications. where
CE approval is required. The VPS is the means for proof of closure and normally open vent
line alternative. The VPS is required for CE compliance on system with capacities of 4.1 Mbtu
and up. The VPS is suitable for natural gas, propane, air and other inert gases. Not suitable
for butane gas.
Specifications
Max. Operating Pressure
7 PSI (500 mbar)
Electrical Ratings (+10% / -15%)
110 Vac 50 – 60 Hz
230 Vac 50 – 60 Hz
Contact Rating
Run: 4 A @ 120 / 230 Vac 50 Hz
Alarm: 1 A @ 110 / 230 Vac 50 Hz
Enclosure Rating
IP 54 (NEMA Type 12)
Electrical Connection
Screw Terminals with SO Cord connection
Operating Time
100% Duty Cycle, Max. 20 Test Cycles/hr
Ambient Temperature Rating
+5 F to +140 F (-15 C to +60 C)
Aluminum body; test cycle approximately 10 to 26s; light indication for permissive or alarm conditions; Screw terminals with SO cord connection. European code requirements may vary. The DUNGS VPS meets EN 746-2 code requirements for a leak tightness device as required for applications with capacities greater than 4,100,000 Btu. (1200 kW).