Install Instructions

Installation & Operation Manual
47
7 Gas connections (continued)
Gas pressure
The gas pressure must remain between 4 inches w.c. (natural),
8 inches w.c. (LP) minimum and 14 inches w.c. (natural and LP)
maximum during stand-by (static) mode and while in operating
(dynamic) mode. If an in-line regulator is used, it must be a
minimum of 10 feet from the Armor wall mount water heater.
It is very important that the gas line is properly purged by the
gas supplier or utility company. Failure to properly purge the
lines or improper line sizing, will result in ignition failure.
The 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.
Figure 7-3 Inlet Gas Supply Check
DO NOT adjust gas valve outlet pressure.
The gas valve is factory-set for the correct
outlet pressure. This setting is suitable
for natural gas and propane, requiring
no field adjustment. Attempting to alter
the gas valve outlet pressure could result
in damage to the valve, causing potential
severe personal injury, death, or substantial
property damage.
Failure to follow all precautions could result
in fire, explosion, or death!
⚠WARNING
⚠WARNING
Gas valve replacement
The gas valve MUST NOT be replaced with a conventional
gas valve under any circumstances. As an additional safety
feature, this gas valve has a flanged connection to the venturi
and blower.
13. Check burner performance by cycling the system while
you observe burner response. The burner should ignite
promptly. Flame pattern should be stable. Turn system
off and allow burner to cool, then cycle burner again to
ensure proper ignition and flame characteristics.
DETAIL
LOOSEN SET SCREW ONE (1)
FULL TURN THEN PLACE
TUBING OVER PRESSURE TAP