Laars LUHE120T, Инструкция по установке и эксплуатации с руководством по устранению неисправностей

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SECTION VII: GAS CONNECTIONS
The gas supply lines must meet all requirements of the National Fuel Gas Code ANSI Z223.1 (Latest Edition),
or in Canada CAN/CGA B149.1 Natural Gas Installation Code (Latest Edition) or CAN/CGA B149.2 Propane
Installation Code (Latest Edition).
1. Connect this water heater only to the type of gas as shown on the rating plate. Use clean black iron pipe or
equivalent material approved by local codes and ordinances (dirt and scale from the pipe can enter the gas
valve and cause it to malfunction). The inlet gas line must have a minimum length of 3 in
(7.6 cm) drip leg
(sediment trap)
installed as close to the water heater’s gas valve as possible. A ground joint union must be
installed as close to the water heater as possible in the gas supply line feeding the water heater to permit
servicing of the water heater. Compounds used on the threaded joints of the gas piping must be resistant to
the action of liquefied petroleum gases/propane gas.
DO NOT apply pipe dope to the gas valve inlet and
make certain that no pipe dope has become lodged in the inlet screen of the gas valve. Extreme care must
be taken to ensure no pipe dope enters the gas valve. Avoid excessive torque when tightening the gas supply
line to the gas valve. Excessive torque may result in cracking of the gas valve housing and could create a
gas leak. The suggested maximum torque is 31.5 ft. lbs.
(4.4 kg-m ).
NOTICE
The manufacturer of this water heater will NOT be liable for any damage or injury caused as a result of a
cracked gas inlet as a result of excessive torque
.
2. This water heater and its gas connection must be leak tested before placing the water heater in operation.
Check for gas leaks with a soap and water solution and a brush or a commercial leak detector fluid.
WARNING
NEVER USE A MATCH OR OPEN FLAME FOR TESTING.
3. While checking for leaks care must be taken to prevent solution from contacting the electrical connections at
the control. If electrical connections at the control become wet, they must be thoroughly dried before
attempting to operate the water heater.
WARNING
The water heater is NOT intended for operation at higher than 14 inch water column (½ psi) supply gas
pressure. Higher gas supply pressures require supplemental reducing service regulation. Exposure to
higher gas supply pressure may cause damage to the gas controls, which could result in fire or explosion.
If overpressure has occurred, such as through improper testing of gas lines or emergency malfunction of
the supply system, the gas valve must be checked for safe operation. Make sure that the outside vents on
the supply regulators and the safety vent valves are protected against blockage. These are parts of the
gas supply system,
NOT the water heater.
CAUTION
The water heater and individual shutoff valve must be disconnected from the gas supply piping system
during any pressure testing of the system at test pressures in excess of ½ psi (3.5 kPa). The water heater
must be isolated from the gas supply piping system by closing its manual shutoff valve during any
pressure testing of the gas supply system at test pressures equal to or less than ½ psi
(3.5 kPa). The
supply line must be capped when not connected to the water heater.
If copper supply lines are used, they must be internally tinned and certified for gas service.