Natco ANSI Z 21.10.3, Руководство по обслуживанию

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CAUTION
A domestic hot water tempering/anti-scald valve should be installed into hot water line to prevent
the maximum outlet water temperature from exceeding 119 degrees F. as per the national standard
plumbing code, to prevent scald injury.
ELECTRICAL CONNECTION
The electrical connection for the Super-E is on the left side of the combustion shroud. There is a 1/2" knockout location for electrical
connection. All electrical wiring must be performed by a qualified licensed electrician, and in accordance with National Electrical Code,
or to the applicable local codes and standards. The electrical requirements are for standard 120 volts, 60 Hz 10 amp service. It is rec-
ommended that an electrical disconnect switch be placed on a nearby wall, and that the connection to the Voyager be made using 3/8"
extra-flex, or 3/8" greenfield (or equivalent). This unit must be wired with #14 awg, and fused for no more than 15 amps.
WARNING
It is of extreme importance that this unit be properly grounded! Ground the water heater, by
connecting the green wire in the electrical access compartment, directly to the main building
ground system. It is very important that the building system ground is inspected by a qualified
electrician, prior to making this connection. The black wire is the hot lead and the white wire is the
neutral lead. Once all connections have been made the electrical access may be closed. It is very
important that the electrical power is not turned on at this time! A green LED is provided on the
main control board. This LED must be luminated when appliance is turned on for proper operation.
Failure to luminate means bad or missing ground or reverse polarity.
GAS CONNECTION
Gas supply shall have a maximum inlet pressure of less than 14" water column (350 mm), 1/2 pound pressure (3.4 kPa), and a mini-
mum of 7" water column. The entire piping system, gas meter, and regulator must be sized properly to prevent pressure drop greater
than 0.5" as stated in the National Fuel Gas Code. This information is listed on the rating plate.
WARNING
It is very important that you are connected to the type of gas as noted on the rating plate. You
must ensure that the entire gas line to the connection at the Super-E is no smaller than 3/4". In the
event the gas valve is exposed to a pressure greater than 1/2 PSI, 14" water column, the gas valve
must be replaced. Failure to follow all precautions below could result in fire, explosion or death.
"LP" or liquefied petroleum, or propane gas; or "Nat" natural gas or city gas. All gas connections must be approved by the local gas
supplier, or utility in addition to the governing authority, prior to turning the gas supply on. The nipple provided is 1/2", and it is manda-
tory that a 3/4" to 1/2" reducing bushing (provided) is used, threaded into the branch of a 3/4" tee and a drip leg fabricated, as per the
national Fuel Gas Code. Once all the inspections have been performed, the piping must be leak tested. If the leak test requirement is
a higher test pressure than the maximum inlet pressure, you must isolate the Voyager from the gas line. In order to do this, you must
disconnect the union and cap the inlet gas line.
DANGER
Never use an open flame (lit match, lighter) to check gas connections.
This could result in serious injury or death.
It is recommended that a soapy solution be used to detect leaks. Bubbles will appear on pipe to indicate a leak is present. The gas
piping must be sized for the proper flow and length of pipe, to avoid 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 or regulator or gas line is under-
sized or in need of service. On the inlet side of the gas valve, there is a 1/8" NPT plug, which can be removed to attach a hose barb,
hose, and inches of water column meter. Also, you can attach a meter to the incoming gas drip leg, by removing the cap and installing
the meter. The gas pressure must remain between 7" and 14" during stand-by and unit running heat cycle. If an in-line regulator is
used, it must be a minimum of 10 feet from the Voyager.
It is very important that the gas line is properly purged by the gas sup-
plier or utility. Failure to properly purge the lines or improper line sizing, will result in the failure of the Voyager lighting off.
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.