Instructions / Assembly

WHL-001 REV. 9.3.14

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.

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.

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

and CO. Failure to follow this instruction could result in fire, explosion, property damage, severe personal

injury, or death.