Jandy Laars LT250, Инструкция по установке и эксплуатации, Страница: 21 / 32

LX and LT Pool Heaters
Page 19
CAUTION
Figure 21. Temperature Control Panel
LAARS LAARS
POOL/OFF/SPA
BACKLIGHT
RS SERVICE
ON LINE FOR
OPERATION
WITH
CONTROLLER
AquaLink RS TM
LAARS
POOL
OFF
SPA
Heating
SERVICE *
*SERVICE DIAGNOSTICS-SEE INSIDE FRONT DOOR
F°/C° SELECT
THERMOSTAT SETTINGS
Low Pressure
Hi Lim Sw
Ext Sw 1
Air Flo Sw
AGS
Ext Sw 2
Temp
Sensor
188 188
°F
°C
°F
°C
RS Online
Water
Temp
Thermostat
Setting
Pool Spa F° C°
Keep all objects off the top of the heater, and
do not obstruct louvre openings in heater
sides. Blocking ventilation air flow may
damage the heater and void the warranty.
3B. Temperature Controls
The LX and LT heaters have temperature 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 21). The
LX utilizes a liquid crystal display (LCD) screen to display
the information while the LT uses indicator lights. The LX
Temperature Control also displays pool/spa water
temperature and allows for precise temperature settings of
the heater.
The controls allow the heater to directly interface
with all Waterpik Technologies/Jandy remote control
units. The LX offers full remote control capabilities while
the LT controls offer limited remote control.
3B-1. Information Displayed
The Model LX displays information on a L iquid
C rystal D isplay (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 Temperature’. 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 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 LAARS LX logo.
When the gas heater is firing, the LCD displays ‘Heating’
under the LAARS LX logo toward the center of the upper
portion of the screen.
The Model LT displays this information by lighting
a set of indicator lights located on the front of the control
panel.
On the upper right-hand portion of the LCD screen
on the Model LX is a selector arrow. Directly to the left of
the selector arrow are three positions. They are ‘POOL’,
‘OFF’, and ‘SPA’. This part of the display indicates the
mode of operation in which the heater is set.
The mode of operation of the Model LT is shown by
two indicator lights labeled "SPA" and "POOL"
Underneath the mode selector on the Model LX
display screen is a Backlight indicator. To turn the
backlight on, press the middle button to the right of the
screen, labeled "Backlight".
a) The LX Control Panel Display
b) The LT Control Panel Display