Table of Contents
Advertisement
7
Gas connections
When re-tightening the set screw, be sure
⚠WARNING
to tighten securely to prevent gas leaks.
Do not check for gas leaks with an open
flame -- use the bubble test. Failure to
use the bubble test or check for gas leaks
can cause severe personal injury, death, or
substantial property damage.
12. Turn the power switch to the "OFF" position.
13. Shut off the gas supply at the manual gas valve in the gas
piping to the appliance.
14. Remove the manometer from the pressure tap on top of
the gas valve. Re-tighten the set screw inside the pressure
tap.
15. Turn on the gas supply at the manual gas valve.
16. Turn the power switch to the "ON" position.
17. 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.
Figure 7-3 Inlet Gas Supply Check
LOOSEN THE SET SCREW ONE (1) FULL TURN
AND PLACE THE MANOMETER TUBING OVER
THE PRESSURE TAP
DIR #2000507872 00
46
A
DETAIL A
Installation & Operation Manual
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 AQUAS Fire
Tube boiler. 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.
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.
Failure to follow all precautions could
⚠WARNING
result in fire, explosion, or death!
Advertisement
Table of Contents
