HTP EL-399 - Manual (Page 44)

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LP- 293 REV. 5.20.14
If an in-line regulator is used, it must be a minimum of 10 feet from the boiler. 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 empty tank situations. This situation can also occur when a utility
company shuts off service to an area to provide maintenance to their lines. This gas valve must not be replaced with a conventional gas
valve under any circumstances.
DO NOT adjust or attempt to measure gas valve outlet pressure. The gas valve is factory-set for the correct outlet pressure and
requires no field adjustment. Attempts by the installer to adjust or measure the gas valve outlet pressure could result in damage to the
valve and cause substantial property damage, severe personal injury, or death.
Ensure that the high gas pressure regulator is as least 6 – 10 feet upstream of the appliance. Failure to do so could result in substantial
property damage, severe personal injury, or death.
D. BOILER GAS VALVE
Figure 24 – LP-293-V
Do not do a gas conversion on this boiler without an officially approved conversion kit and instructions supplied by HTP. Failure to use a
conversion kit when converting the boiler 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.