Garnet SeeLevel II User manual
Printed in Canada
www.garnetinstruments.com
IMPORTANT OPERATOR INFORMATION
DATE INSTALLED:_____________________________________________________________
SERIAL NUMBER: _____________________________________________________________
Signal Level Sender Height
Black Water Tank
Grey Water Tank
Fresh Water Tank
SEELEVEL II TM
Tank Monitor
MODEL 709-BTP3
MANUAL
Page 2 709-BTP3 Manual
Table of Contents
CHAPTER 1 - OVERVIEW.............................................................................................3
CHAPTER 2 - SYSTEM DESCRIPTION .....................................................................4
CHAPTER 3 - OPERATING INSTRUCTIONS ..........................................................6
CHAPTER 4 - GARNET RV APP INSTRUCTIONS.................................................8
CHAPTER 5 - DISPLAY CALIBRATION................................................................... 22
CHAPTER 6 - SENDER PROGRAMMING ............................................................. 27
CHAPTER 7 - INSTALLATION GUIDE..................................................................... 31
CHAPTER 8 - TROUBLESHOOTING GUIDE......................................................... 38
CHAPTER 9 - SPECIFICATIONS ............................................................................... 46
CHAPTER 10 - SERVICE AND WARRANTY INFORMATION.......................... 47
MAIL IN WARRANTY ................................................................................................. 49
GARNET
SEELEVEL II TM
Tank Monitor
MODEL 709-BTP3
709-BTP3 Manual_v3.0 - 12-Apr-2017
Page 3
709-BTP3 Manual
The SEELEVEL II TM Tank Monitor represents a massive leap
forward in level measurement technology for the Recreational
Vehicle industry. The SeeLeveL has a combination of features,
accuracy, reliability, and diagnostic capability that have never been
available before.
Model 709-BTP3 will monitor the battery voltage, the fresh water
and sewer holding tanks, the LPG tank and includes a pump switch.
The 709-BTP3 has Bluetooth®wireless technology capability so that
tank levels and battery voltage can be shown on a smartphone or
tablet with the free downloaded app.
Tank information is also displayed on your 3-digit alpha-numeric
LED display. There is one alarm output available which can be
used to signal a high or low water or sewer level as required. In
addition, the system can display the operating characteristics of
each of the tank sending units, giving it unsurpassed diagnostic
capability.
CHAPTER 1 - OVERVIEW
WARNING: All power circuits must be fused. If a fuse
is not provided with the system then it is the installer’s
responsibility to install a fuse with a maximum rating of 7.5
amps. A relay is required if more than 7.5 amps is needed for
the pump.
For more detailed information please refer to Chapter 7
“TROUBLESHOOTING GUIDE” and section “How to avoid
damaging the display or pump switch due to excessive
current”.
“The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth
SIG, Inc. and any use of such marks by Garnet Instruments Ltd. is under license. Other
trademarks and trade names are those of their respective owners.”
Page 4 709-BTP3 Manual
The SeeLeveL consists of a display unit that mounts inside the
RV, and sender panels that stick to the side of the holding tank.
A single 2 conductor wire is used to connect all the sender panels
to the display.
The Sender: Each sender panel is a exible self-adhesive printed
circuit board which is adhered to the side of the holding tank.
The sender panel can be cut to length to match the height of the
tank, and it auto calibrates itself so that it can read from Empty
to Full regardless of the height of the tank. The sender scans
the water level through the tank wall using advanced digital
techniques programmed into the sender microprocessor. When
the sender transmits the water or sewer level information to the
display, it sends a digital code that has built in error detection,
making it highly unlikely for the display to read an incorrect level,
even if the wiring is marginal. In addition to the level, the sender
also transmits diagnostic information about its operation. This
information can be used to determine if there is buildup of sludge
on the inside of the tank, or to determine if the sender is damaged
or delaminating from the side of the tank. If sludge buildup in the
tank becomes extreme the gauge will cease to operate properly,
so by monitoring the signal power the tank can be cleaned before
the buildup gets excessive. Three different sender options (710JS,
710ES, and 710SS) and the ability to double stack the senders
provide accurate level measurement for tank heights ranging from
4½” to 34”.
The Display: The display receives the information from the three
sender panels via a single 2 conductor wire, and displays the level
information in percent of full on a 3-digit LED display. When the
button for a particular tank is pressed, the display shows the level
for that tank. If the button is pressed and released, the display
will show the level for about 5 seconds and then shut down
automatically. If another button is pressed before the display
shuts down, then the new level will immediately be shown. If the
same water or waste button is pressed twice, the display will hold
on that tank and continue to show updated levels for 5 minutes
before shutting off. This allows the user to monitor the lling or
draining of a tank. By pressing two buttons at once, the diagnostic
functions can be accessed; these are described in detail in the
troubleshooting chapter.
If a sender is operating properly and connected to the display with
good wiring, then the display will show the level normally. If the
wiring is disconnected, shorted, or cut, or if the sender panel is
CHAPTER 2 - SYSTEM DESCRIPTION
Page 5
709-BTP3 Manual
defective, then the display will indicate an error code. The various
error codes are shown in the troubleshooting chapter.
With these diagnostic features and the digital nature of the tank
level sensing technology, it is almost impossible for the system
to indicate an incorrect water level, and in the very unlikely
event it does occur, servicing is greatly aided with the diagnostic
information.
The system also shows the RV battery voltage by measuring the
voltage which powers the display. The voltage is shown with a
resolution of 0.1 volt.
The display can use an existing LPG electrical sender to show the
LPG level. It can be automatically calibrated to any sender, and
shows level on the LED display in percent of full, from 0% to 100%.
In order to keep the tank level and alarm information current, the
display regularly scans the senders every 10-15 seconds. When a
tank button is pressed, the information displayed is recalled from
the most recent scan. A tank on hold is scanned more frequently.
Systems with two displays are congured so that the primary
display initiates the scanning and the secondary display passively
listens to the sender information, this way both displays stay
updated without interfering with each other.
The single common alarm output can be programmed to indicate
a high or low sewage level, a high or low water level, or a high or
low LP level. More than one alarm can be assigned to the alarm
output. This output can be connected to an indicator light and
used to show a high sewer level and/or a low water level, alerting
the user that attention is required. Another example is the alarm
could be used on the black tank to prevent toilet use when the
tank is full.
Page 6 709-BTP3 Manual
The display is the only system component that is accessed by
the user. All user input to the display is done using the ve
buttons along the bottom of the display. Operation of the display
is as follows:
To read a water or sewer tank level:
1. Press the button corresponding to the tank to be checked and
release it, the display will show the level in percent on the LED
display. If no other button is pressed, then the display will
shut off after about 5 seconds.
2. If another button (including BATT or LPG) is pressed before
the 5 second time is up for the rst button, the display will
immediately switch to showing the new level or voltage. The
5 second timeout is restarted every time a button is pressed.
3. To continuously display a reading, press and release the
desired button, and then press the same button a second
time. When the button is released, the display will be in hold
mode, which is indicated by the decimal point on the right
hand side turning on. While the display is in the hold mode
it will recheck the held level every 2 - 3 seconds so the user
can watch the level change while the tank is being lled or
drained. The other tanks will continue to be scanned every
10 - 15 seconds. The display will automatically shut off after
5 minutes in hold mode. To end the hold mode before the 5
minutes is up, press any tank button, and the display will shut
off.
To read the LPG tank level:
1. Press the LPG button and release it, the display will show the
LPG level in percent on the LED display. If no other button is
pressed, then the display will shut off after about 5 seconds.
2. If another button is pressed before the 5 second time is up
for the LPG button, the display will immediately switch to
showing the new level or voltage. The 5 second timeout is
restarted every time a button is pressed.
3. There is no hold mode for the LPG. The LPG tank level cannot
change fast enough to justify the use of the hold function,
except during lling of the tank. The gauge should not be
used as a full tank shutoff indicator since the LPG sender in
the tank is not reliable or accurate enough to be used as a
safe indicator of a full tank.
CHAPTER 3 - OPERATING INSTRUCTIONS
Page 7
709-BTP3 Manual
Note: If using two displays (i.e. a primary and a secondary display),
then only the primary display should have a connection to the
LPG tank. If both displays are connected to an LPG tank, then an
incorrect reading will result. The primary display relays LPG levels
to the secondary display through the sender wiring.
To read the battery voltage:
1. Press the BATT button and release it, the display will show the
battery voltage on the LED display.
2. If no other button is pressed, then the display will shut down
after about 5 seconds. If the BATT button is held down,
the display will continuously recheck the voltage and show
the updated value. The reading may icker back and forth
between two values, for example, 12.6 and 12.7 volts. This is
normal behavior for a digital voltage display.
3. If another button is pressed before the 5 second time is up
for the BATT button, the display will immediately switch to
showing the value for the new button. The 5 second timeout
is restarted every time a button is pressed.
4. There is no hold mode for the battery voltage.
Page 8 709-BTP3 Manual
CHAPTER 4 - GARNET RV APP INSTRUCTIONS
The Garnet RV Bluetooth®App:
• The free Garnet RV App is available for any
compatible Android and Apple iOS device.
• Wireless technology enables your tank
monitor to send tank levels and battery
voltage to any compatible Android or
Apple iOS device.
• One display can send data to several phones or tablets, the
phone or tablet does not need to be paired to your display
unit.
• Bluetooth has a limited range of up to 16 meters (50‘) but
should function inside the RV and immediate surrounding
area.
• The following section will instruct you on installation and
operation of the Garnet RV App.
System Requirements
Android
An Android phone or tablet with Bluetooth 4.1 running Android
version 5.0 (Lollipop) or newer.
Apple iOS
An Apple iPhone, iPad or iPod touch running iOS version 9.3 or
later.
Page 9
709-BTP3 Manual
Download the app:
For Android devices go to the
Google Play Store to download
and install the app.
For Apple iOS devices go to the
Apple App Store to download and
install the app.
Page 10 709-BTP3 Manual
Turn Bluetooth on:
Android
Open your settings app and make
sure Bluetooth is turned ON.
Apple iOS
Open your settings app and make
sure Bluetooth is turned ON.
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