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Jandy
®
Pro Series, JXi
™
Pool & Spa Heater
6. Connect one end of a hose to the gas valve manifold port and the
other end to the negative (low pressure) side of the manometer
(see Figure 20).
ON
OFF
UNITS
ZERO
NEGATIVE
(Low Pressure Port)
_
POSITIVE
(High Pressure Port)
+
DIGITAL MANOMETER
FAN INLET PORT
“T” JOINER
GAS VALVE VENT PORT
GAS VALVE MANIFOLD PORT
LABELED “PRESS” “TAP”
Figure 20. Testing Gas Offset Pressure
7. Start the heater and record the gas offset pressure with the heater
running and the gas valve sealing cap firmly in place.
8. Read offset pressure at the manometer.
Measurement should be
–0.2 ʺ WC
+/- 0.1 ʺ WC
