North American Valve Proving Device
Sheet 1597-5
SPECIFICATIONS
Location The Valve Proving Device can be mounted directly to the Double Shutoff Valve ports 1 and 2. • Label all wires prior to disconnection when servicing Valve Proving Device. Wiring errors can cause improper and dangerous operation. • Verify proper operation after servicing. • Never perform work if gas pressure or power is applied, or in the presence of an open flame. • Protect surfaces. Make sure that seals and O-rings are clean and in good condition. • Once installed, perform a complete checkout including a gas leak test.
The Valve Proving Device checks that both safety shutoff valves in a Compact Fuel Train are fully closed before a system start-up and after shutdown when wired and interlocked with a suitable flame monitoring relay as shown in the wiring diagrams on page 2. The Valve Proving Device will halt the start-up sequence to a burner if it detects an open safety shutoff valve, thus preventing ignition under dangerous conditions.
Gas: natural gas, propane, non-corrosive gases, and air Maximum Operating Pressure: 7 psi Electrical Rating: 120 V ac / 60 Hz Power Consumption: during pump period 60 VA during standby 17 VA Contact Rating Run T5: 4 A res, 2 FLA at 120 V ac/60 Hz Alarm T3: 1 A res, 0.5 FLA at 120 V ac/60 Hz Enclosure: NEMA 12 Ambient/Fluid Temperature: 5°F to 140°F Materials in Contact with Gas housing: cast aluminum rubber components: NBR-based rubber Controller Duty Factor: 100% duty cycle maximum 20 test cycles / hour Test Volume: less than 0.14 cu ft Test Period
DMV
Port 2 Port 1
Mounting holes
Mounting • The gas supply must be shut off and the Double Shutoff Valves must be de-energized before mounting the Valve Proving Device. • Disconnect all power to the valves and the valve proving system before beginning to prevent electrical shock and equipment damage. Recommended Mounting Procedure • Use the M4 15 mm self tapping socket head screws supplied with the Valve Proving Device to cut the threads in the four predrilled holes in the side of the Double Shutoff Valve body at the desired mounting position. • Use a 3 mm hex key wrench to turn the screws. After cutting the threads remove the M4 15 mm socket head screws. • Make sure the 10.5 2.25 mm O-rings are fitted into the grooves on the back of the Valve Proving Device.
~10 sec. for test volume < 0.5 cuft maximum test period = 26 seconds Maximum Allowable Leakage Under Worst Case Conditions: 1 cfh Mounting Position: upright vertical to horizontal Approvals: UL Recognized Component: File No. MH 17004, Guide No. MJAT2
INSTALLATION
• Read these instructions carefully. • Failure to follow them and/or improper installation may cause explosion, property damage, and injuries. • Installation must be done with the supervision of a licensed burner technician. • The system must meet all applicable national and local code re- quirements. • Check the ratings given in the specifications and on the Valve Prov- ing Device to make sure that it is suitable for your application.
Made with FlippingBook flipbook maker