Westinghouse WGR050LP076 Installation Instruction
40
WHL-001 REV. 12.17.14
It is recommended that a soapy solution be used to detect leaks.
Bubbles will appear on the pipe to indicate a leak is present. The gas
piping must be sized for proper flow and length of pipe to avoid
excessive pressure drop. Both the gas meter and the gas regulator
must be properly sized for the total gas load. If you experience a
pressure drop greater than 1" WC, the meter, regulator or gas line is
undersized or in need of service. You can attach a manometer to the
incoming gas drip leg by removing the cap. The gas pressure must
remain between 3.5" WC and 14" WC during stand-by (static) mode
and while in operating (dynamic) mode at full output.
If an in-line regulator is used, it must be a minimum of 10 feet from
the heater. It is very important that the gas line is properly purged
by the gas supplier or utility. Failure to properly purge the lines or
improper line sizing will result in ignition failure. This problem is
especially noticeable in NEW LP installations and also in empty tank
situations. This can also occur when a utility company shuts off service
to an area to provide maintenance to their lines. The gas valve must
not be replaced with a conventional gas valve under any
circumstances. As an additional safety feature, the gas valve in this
water heater has a flanged connection to the swirl plate and blower.
Bubbles will appear on the pipe to indicate a leak is present. The gas
piping must be sized for proper flow and length of pipe to avoid
excessive pressure drop. Both the gas meter and the gas regulator
must be properly sized for the total gas load. If you experience a
pressure drop greater than 1" WC, the meter, regulator or gas line is
undersized or in need of service. You can attach a manometer to the
incoming gas drip leg by removing the cap. The gas pressure must
remain between 3.5" WC and 14" WC during stand-by (static) mode
and while in operating (dynamic) mode at full output.
If an in-line regulator is used, it must be a minimum of 10 feet from
the heater. It is very important that the gas line is properly purged
by the gas supplier or utility. Failure to properly purge the lines or
improper line sizing will result in ignition failure. This problem is
especially noticeable in NEW LP installations and also in empty tank
situations. This can also occur when a utility company shuts off service
to an area to provide maintenance to their lines. The gas valve must
not be replaced with a conventional gas valve under any
circumstances. As an additional safety feature, the gas valve in this
water heater has a flanged connection to the swirl plate and blower.
C. GAS VALVE
Figure 21
– Gas Valve LP-441-S
Strain on the gas valve and fittings may result in vibration, premature component failure and gas leakage, and result in fire, explosion,
property damage, severe personal injury, or death.
property damage, severe personal injury, or death.
Adjustments to the throttle screw or offset may only be made by a qualified gas technician using a calibrated combustion analyzer
capable of measuring CO
capable of measuring CO
2
and CO. Failure to follow this instruction could result in fire, explosion, property damage, severe personal
injury, or death.