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Page 17
ENGLISH
Installation and Operation Manual
|
Jandy
®
LXi
™
Model Pool and Spa Heater by Zodiac
®
Supply Pressure
Minimum
Maximum
Natural Gas
5.0 inches W.C.
(1.2 kPa)
10.5 inches W.C.
(2.6 kPa)
LP Gas
11.0 inches W.C.
(2.5 kPa)
14.0 inches W.C.
(3.5 kPa)
Manifold Pressure
Nominal
Natural Gas
2.5 inches W.C. (0.6 kPa)
LP Gas
9.0 inches W.C. (2.2 kPa)
NOTE
The maximum inlet gas pressure must not
exceed the specified value. The minimum
value listed is for the purpose of input
adjustment. Refer to Table 6.
8. To connect the gas supply line to the heater’s gas
valve, make sure the steel elbow (supplied with
the manifold) is screwed into the inlet side of the
gas valve. The heater is designed so that the gas
supply line may enter through either side of the
heater. Tighten the elbow until the desired orien-
tation is achieved.
CAUTION
Do not overtighten the elbow. Over tightening will
crack the gas valve. Do not use Teflon
®
tape to
wrap the elbow threads.
ATTENTION
Ne serrez pas trop le coude. Vous risqueriez de fis-
surer la soupape de gaz. N’entourez pas le filetage
des coudes de ruban à joints.
9. Before operating the heater, test the complete gas
supply system and all connections for leaks using
a soap solution. Do not use an open flame.
CAUTION
Some leak test solutions (including soap and water)
may cause corrosion or stress cracking. Rinse the
piping with water after testing.
ATTENTION
Certaines solutions d’essai d’étanchéité (y compris
l’eau et le savon) peuvent causer de la corrosion
ou de la fissuration. Rincez les tuyaux à l’eau après
l’essai d’étanchéité.
4.2
Manifold Pressure
Confirm that gas supply pressure is correct. If
the gas supply pressure is less than required, check
for undersized pipe between the meter and the heater,
a restrictive fitting, or an undersized gas meter. Gas
supply pressures to the heater, when it is operating, are
listed in Table 6.
CAUTION
Manifold gas pressure for the LXi natural gas heat-
ers should be set at
2.5"
WC. Propane heaters
should be set to 9" WC.
ATTENTION
La pression du collecteur de pression pour les
systèmes de chauffage au gaz naturel devrait être
de 2.5'’ WC. Pour les sytèmes de chauffage au gaz
propane devrait être de 9'’ WC.
The manifold pressure may be checked by con-
necting a manometer to the pressure port on the outlet
side of the valve. The pressure will be zero when the
heater is not running. When the heater is operating the
manifold gas pressure should be 2.5" WC for natural
gas heaters and 9.0" WC for LP gas heaters.
If the manifold pressure indicated above is not
correct, check the gas train for possible problems.
Check the meter, gas line, gas fittings, and gas shut off
for under sizing. Check the gas valve inlet for excess
pipe dope, if all is correct, then it may be necessary to
adjust the gas valve regulator. To adjust the manifold
gas pressure, first remove the slotted cap next to the
inlet pressure port on the inlet side of the gas valve.
Under the slotted cap is a slotted plastic screw which
increases the manifold pressure when turned clock-
wise and decreases the manifold pressure when turned
counterclockwise. After measurements, and adjust-
ments if necessary, have been made, make sure to re-
place the 1/8 inch NPT gas valve plugs on the inlet and
manifold pressure ports, and the cap on the manifold
pressure adjustment screw. It is extremely important
to replace these parts before leaving the installation.
Failure to do so can result in damage to property or in-
jury or death.
With the heater firing
, the pressure must
be within the range shown in Table 6. Also check the
pressure with the heater off.
WARNING
Failure to replace the 1/8 inch NPT gas valve plugs
on the inlet and manifold pressure ports and the
cap on the manifold pressure adjustment screw can
result in property damage, severe injury, or death.
AVERTISSEMENT
L'omission de remplacer les soupapes à gaz de
1/8 pouce NPT sur les lumières de refoulement de
l'entrée et du collecteur et le capuchon sur la vis
de réglage de pression du collecteur peut entraîner
des dommages matériels, des blessures graves,
voire la mort.
4.3
Special Precautions for LP Gas
LP Gas is heavier than air and can therefore more
readily collect or “pool” in enclosed areas if provision
for proper ventilation is not made. Installation of pool
heaters in enclosed areas such as pits is not recom-
mended. However, if such an installation is required
be sure to pay special attention to proper ventilation
requirements for LP gas. Locate heaters a safe distance
Table 6. Gas Supply Pressure Requirements*