Jandy JXi 200 Installation And Operation Manual - page 16
Page 16
ENGLISH
Jandy
®
Pro Series, JXi
™
Gas-Fired Pool & Spa Heater
|
Installation & Operation Manual
4.2
Inlet Gas Pressure Test
Before operating the heater it is necessary to test the input
gas pressure to ensure that it falls within the required
range as outlined in
Table 3.
INLET GAS
PRESSURE
NG
(NATURAL GAS)
LP
(LIQUID PROPANE)
INCHES W.C.
MAX
10.5
14
MIN
4
4
•
All readings must be made while heater is operating.
•
Relying on any reading taken while heater is off may result in
poorperformanceanddifficultyinoperation.
Table 3.
Supply Gas Input Pressure Requirements
a
Pull gas inlet grommet away from heater body panel.
b
Remove one screw and the gas valve access panel.
c
Remove 1/8" NPT plug using a 3/16” Hex Key.
d
Install a 1/8” to 1/16” barbed adapter.
e
Connect positive manometer lead to barbed adapter.
• Inlet gas pressure must be taken while the heater, and
if possible, all other gas burning appliances supplied
by the same gas delivery system, are operating.
•
If the gas supply pressure is less than required,
check for an undersized pipe between the meter and
the heater, a restrictive fi tting, or an undersized gas
meter. If needed contact the local gas utility company
for assistance.
•
Once proper inlet pressure has been confi rmed, shut
off gas supply.
•
Remove manometer, hose and barbed fi tting from the
gas valve.
•
Apply joint compound to the NPT plug and reinstall.
• Before operating the heater, test the gas supply
system and all connections for leaks using a soap
solution. Do not
use an open
fl ame to test for
leaks.
•
Reinstall the
gas valve access
panel.
• Secure the gas
inlet grommet at
heater side panel.
4.3
Gas Offset Pressure Test
Before operating the heater it is necessary to test the
offset gas pressure to ensure that it falls within the
required range of -0.2" WC (Inches Water Column)
+/- 0.1" WC. This reading must be taken with the heater
running using a digital differential manometer.
•
Verify the manual gas shutoff valve is open.
•
Remove the heater rear panel to expose the gas valve.
a
Remove the four screws securing the panel to the
heater body.
b
Lift and remove panel. Set aside a safe distance from
the work area.
c
Verify that the gas valve control is in the “ON”
position.
NOTE: The rear
panel is the main
body panel closest
to the gas inlet. This
may appear to be the
front panel if the user
interface was moved
to accommodate a left
side water connec-
tion. For instructions
on moving the user
interface see
5.2.1
.
c
d
View With Side Panel Hidden
1/8" NPT Plug
1/8" NPT to 1/16”
Barbed Adapter
e
Connect Hose to
Positive (+) Manometer Port
Connect Hose to
Barbed Adapter
a
b
Gas Inlet Grommet
Gas Valve Access Panel
Gas Inlet Grommet
Screw
Screw
Gas Valve
Access Panel
b
Gas Valve
a
c
Gas Valve
Control Switch
ON