Electrolux SBB800S-1 Manual De Instalación página 23

Pressure Test
The appliance and its gas connections must be leak tested before placing the appliance in operation.
The appliance must be isolated from the gas supply piping system by closing its individual manual
shutoff valve during any pressure testing of the gas supply piping system at test pressures equal
to or less than ½ psig (3.5 kPa). We do not recommend pressure testing in excess of ½ psig
(3.5kPa). If it must be done, the appliance and its individual shutoff valve must be completely
disconnected from the gas supply piping system during the test process.
Pipe Sizing/Flexible Connectors
A gas shutoff valve must be installed on the supply line. Gas ex lines are not recommended unless
the minimum inside diameter is ¾" or greater and the rated capacity of the connector is equal to
or greater than the BTU capacity of the water heater. Gas piping shall be in accordance with local
utility company requirements and/or in the absence of local codes, use the latest edition of
National Fuel Gas Code (NFPA54GC), ANSI Z223.1. Size the gas line according to total btuh
demand of the building and length from the meter or regulator so that the following supply
pressures are available even at maximum demand.
Natural Gas Supply Pressure
Min 4" WC
Max 10.5" WC
Reference Tools & Sample Calculations
The tables and samples below are for reference only. The professional sizing and installing the gas
line should always run the appropriate calculations before all installations.
Which Table to Use
less than 8" WC, use the 0.5" WC pressure drop table (Table 1).
WC, use the 3.0" pressure drop table (Table 2).
The inlet pressure must be at least 5" WC for NG or 8" WC for LP for all appliances in the gas system.
If the inlet gas pressure drops below 5" WC for NG or 8" WC for LP, the heater may continue to operate,
but the other appliances in the house may experience ame loss or ignition failure, which can result in
gas leakage into the home. Refer to the NFPA 54 for details.
Please contact Electrolux Home Products, Inc. for details. For corrugated stainless steel tubing (CSST)
capacity tables, please consult with the manufacturer.
WARNING
LP Gas Supply Pressure
Min 8" WC
Max 14" WC
CAUTION
21