HTP 199-55SA - Manual (Page 43)

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LP-179 REV. 3.21.14
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 25 – Gas Valve LP-179-P
Do not do a gas conversion on this water heater without an officially approved conversion kit and instructions supplied by HTP. Failure
to use a conversion kit when converting the heater to fire on Natural or LP gas will result in extremely dangerous burner operation,
leading to fire, explosion, severe injury or death.
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
2
and CO. Failure to follow this instruction could result in fire, explosion, property damage, severe personal
injury, or death.