Viking VDR548 Installation Instructions - Page 13
Pressure Regulator, Flexible Connections, In Canada, In Massachusetts
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Electrical & Gas Requirements Pressure Regulator: • All heavy-duty, commercial type cooking equipment must have a pressure regulator on the incoming service line for safe and efficient operation, since service pressure may fluctuate with local demand. External regulators are not required on this range since a regulator is built into each unit at the factory. Under no condition bypass this built-in regulator. • Manifold pressure should be checked with a manometer, natural gas requires 5.0" W.C.P. and LP gas requires 10.0" W.C.P. Incoming line pressure upstream from the regulator must be 1" W.C.P. higher than the manifold pressure in order to check the regulator. The regulator used on this range can withstand a maximum input pressure of 1/2" PSI (14.0" W.C.P.). If the line pressure is in excess of that amount, a step down regulator will be required. • The appliance must be disconnected from the gas supply piping system during any pressure testing of that system. Flexible Connections: If the unit is to be installed with flexible couplings and/or quick-disconnect fittings, the installer must use a heavy-duty AGA design-certified flexible connector of at least 1/2" (1.3 cm) ID NPT (with suitable strain reliefs) in compliance with ANSI Z21.41 and Z21.69. In Canada: CAN 1-6, 10-88 metal connectors for gas appliances and CAN 1-6.9 M79 quick disconnect devices for use with gas fuel. In Massachusetts: This appliance must be installed with a 36" (3-foot) long flexible gas connector. Gas connection in this area 4" (10.2 cm) 1-1/16" (2.7 cm) 31-1/16" (78.9 cm) 3-3/4" (9.5 cm) Gas or electrical connection in this area 13
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