27
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
appliance has a flanged connection to the swirl plate and blower.
C. GAS VALVE
Do not do a gas conversion on this water heater without an officially approved conversion kit and
instructions supplied by HTP.
Figure 13 – Gas Valve LP-179-P
To Next Page
Loading...
