Jandy -Low NOx Installation And Operation Manual - page 26
Page 24
CAUTION
Keep all objects off the top of the heater.
Blocking air flow could damage the heater, and
may void the warranty.
ATTENTION
Ne posez aucun objet sur le dessus de
l’appareil. Il pourrait empêcher la circulation de
l’air, ce qui risquerait d’endommager l’appareil
et d’annuler la garantie.
Be sure that there is water in the pool and that
the surface level is above the skimmer or other inlet of
the pool's filter system.
Confirm that pool water is flowing normally
through the pool system and equipment. With any new
pool or spa installation, operate the filter pump with the
heater off long enough to completely clean the water.
This will remove any installation residue from the
water. Clean the filter at the end of this operation
before starting the heater. Start the heater in accor-
dance with the Operating Instructions section of this
manual, with particular attention to the lighting and
shutdown instructions and temperature control opera-
tion.
The heater may not start on the first try. Air in
the gas line or other start-up situations may cause it to
cycle. It will lock out if ignition is not achieved in
three attempts (see Section 9.2, "Service Codes"). To
provide three additional attempts, use the mode button
and follow instructions in section 7.1 to reset the
controller.
When the heater starts, immediately feel the
outlet header of the heater to confirm that there is
adequate water flow. The header should not be hot.
Normally, water temperature will rise only a few
degrees as it passes through the heater, and a "hot"
header or pipe indicates low water flow.
WARNING
When the heater is fired for the first time, the
combustion chamber refractory binder material
is driven out by the heat of the flame. White
smoke and/or sharp odors may be emitted
from the vent during this period. Do not inhale
combustion product fumes at any time, and
especially when these fumes are being emitted.
This "burn-in" period will last only a few
minutes.
AVERTISSEMENT
Lorsque l’appareil est mis en marche pour la
première fois, le matériau liant réfractaire de la
chambre de combustion est expulsé par la
chaleur de la flamme. De la fumée blanche et
de fortes odeurs peuvent se dégager du tuyau
d’aération à ce moment-là. N’inhalez les
fumées de combustion à aucun moment,
surtout au moment où elles sont émises. Cette
période de combustion ne durera que quelques
minutes.
When raising the temperature of a cold pool,
program the time clock to turn the pump off 23 hours
after the start time (e.g., If the start time is 2:00 PM,
then set the stop time at 1:00 PM.). This lets the filter
system and heater operate continuously until the water
reaches the temperature setting on the temperature
control. When that happens, the heater will automati-
cally shut off, but the filter pump will keep running.
7.3 Temperature Controls
The LX and LT Low NOx heaters have tem-
perature controls that can be set to heat the pool and
spa with independent temperature settings. The
controls display information to indicate that the heater
needs service, and diagnostic information for the
service person (see Figure 25). The LX utilizes a liquid
crystal display (LCD) screen to display the informa-
tion while the LT uses indicator lights. The LX Tem-
perature Control also displays pool/spa water tempera-
ture and allows for precise temperature settings of the
heater.
The controls allow the heater to directly interface
with all Jandy remote control units. The LX offers full
remote control capabilities while the LT controls offer
limited remote control.
Important: The temperature controls cannot be
calibrated in the field. If the control is faulty, shut
down the heater by following the procedures in
Section 7.4 and have a qualified service technician
replace the control. DO NOT use the thermostat
switch to completely shut down the heater.
7.3.1 Information Displayed
The Model LX displays information on a Liquid
Crystal Display (LCD) screen. The temperature
control displays the water temperature of the pool or
spa as well as the desired temperature (thermostat
setting) in either Fahrenheit or Celsius. When there is
water flowing through the heater (the filter pump is
on), the water temperature is displayed in the right-
most of two bar graphs in the center of the screen.
This bar graph is labeled as ‘Water Temp’. The
selected thermostatic setting (either Pool or Spa) is
displayed as a bar graph directly to the left of the
water temperature bar graph. This bar graph is labeled
as ‘Thermostat Setting’. Note that when neither
thermostat is selected (the heater is in off mode) only
the water temperature is displayed.
If there is no water flowing through the heater
(the filter pump is off), then only the thermostat setting
for the mode selected, pool, or spa, will be displayed.
The Model LT heater does not display water
temperatures or thermostatic settings.
When the heater is unable to operate due to a
problem, the temperature control will identify which
limit is not satisfied. The Model LX displays this
information on the left side of the LCD under the LX
logo. When the gas heater is firing, the LCD displays