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ENGLISH
Jandy
®
Pro Series, JXi
™
Gas-Fired Pool & Spa Heater
|
Installation & Operation Manual
NOTE: If the heater is installed below the level of the pool,(or
more than two feet above the pool level), the pressure
switch setting must be adjusted. See Section 5.4
Adjusting the Water Pressure Switch for guidelines.
Water Temperature Control
All heater models are equipped with an electronic control
which senses water temperature by means of a thermistor
and controls heater operation to bring the water to the
temperature selected. It has an option for two (2) separate
thermostat settings which are typically used to set pool and
spa temperatures.
Ignition Control
The ignition control provides energy for ignition of the air/
gas mixture, monitors the ame and controls the gas valve.
When the temperature control calls for heat, the ignition
control initiates the start-up process by rst purging the
combustion chamber gases. The ignition control will
then energize the igniter and open the gas valve when
the igniter surface is sufciently hot. During the start-up
process and after ignition, the ignition control system is
continually monitoring the ame condition. If the control
senses an unstable ame it will close the gas valve as a
safety precaution.
Section 2. Installation
Requirements
2.1 Introduction
Install the JXi in accordance with the procedures in this
manual, local codes and ordinances, and in accordance
with the latest edition of the appropriate national code.
See Section 1.5 for certication codes and standards.
All gas-red products require correct installation to assure
safe operation. The requirements for pool heaters include
the following:
• Field assembly (if required)
• Appropriate site location (clearances) and ooring
(see Section 2.6)
• Sufcient combustion and ventilation air
• Properly sized gas meter and piping
• Proper electrical wiring (if required)
• Adequate water ow
This manual provides the information needed to
meet these requirements. Review all applications and
installation procedures before continuing the installation.
See Section 2.7 for NOTE on operating the heater in areas
with below freezing conditions.
2.2 Materials Installer Must Provide
For ALL Installations
• The correct size gas pipe to supply gas from gas meter to
heater (see Section 4.1).
• Gas shut-off valve to be installed in gas line outside of the
heater jacket.
• Manual gas shut off valve must be installed in an
accessible location, within 6’ upstream of heater.
• A suitable gas union joint to connect heater to gas line
outside of heater.
• Plumbing materials for providing sediment trap (drip leg)
in gas line between the manual gas valve and heater (see
Section 4.1).
• 120 VAC or 240 VAC power supply. (A junction box is not
needed at the heater; connections are made inside of the
heater jacket.)
For Special Installations
• INDOOR INSTALLATIONS: Factory authorized vent
pipe or elbows sized for indoor installations (US) and/or
outdoor shelter installations (Canada).
• PVC PIPE CONNECTIONS: Primer and cement suitable
for cementing CPVC pipe to PVC pipe. Coupling for
connecting factory-supplied CPVC pipe unions to PVC
pool plumbing
2.3 Specications
Installation Location
• Natural Gas (USA) -
Certiedforindoorandoutdoor
• Natural Gas (CANADA) -
Certiedforoutdoorandcoveredshelterinstallations
• Liquid Propane (USA) -
Certiedforindoorandoutdoorinstallations
• Liquid Propane (CANADA) -
Certiedforoutdoorandcoveredshelterinstallations
NOTE: Indoor installation is not recommended for
liquid propane heaters. Review information in Special
Precautions for liquid propane heaters (Section 4.1).
Minimum Clearance from Combustible Material
• 6 inch (15 cm) minimum clearance distance
from all surfaces
See Section 2.6 for more information.
Gas Pipe/Heater Gas Valve Connection
• Natural Gas: 3/4" NPT
• Liquid Propane: 3/4” NPT
• For gas pipe sizing requirements, see Table 4.
Supply Gas Type
• Natural Gas
• Liquid Propane
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