Atwood 36719 Operating and maintenance instructions

Atwood Mobile Products LLC
1120 North Main Street Elkhart, IN 46614-3203
USA & Canada 1-866-869-3118
Internet: http://www.atwoodmobile.com
Model LP
USER’S MANUAL AND INSTALLATION
INSTRUCTIONS
TESTED TO UL1484
For questions concerning your Alarm, please call our
Customer Service at 1-866-869-3118
Please have the following information ready when calling:
Alarm Model Number (located on the back of alarm):
Alarm Assembly Number (located on the back of alarm):
Date of Manufactured (located on the bottom of alarm):
Date of Purchase:
Where Purchased:
P/N 30100 Rev D 4/15

2
Liquefied Petroleum Gas Awareness...............................................3
ACTIVE ALARM PROCEDURES .......................................................4
TESTING ............................................................................................6
MODEL DESCRIPTION......................................................................7
SPECIFICATIONS ..............................................................................7
POWER CONSERVATION MODE......................................................................8
ALARM OPERATION .........................................................................8
Power Off Mode...................................................................................................8
Normal Stand-by Mode.......................................................................................8
Alarm Mode ..........................................................................................................9
Test Mode.............................................................................................................9
Silence / Stabilization Mode...............................................................................9
Fault Mode............................................................................................................9
FUNCTIONS.......................................................................................10
INSTALLATION INSTRUCTIONS.......................................................11
WIRING...............................................................................................13
FLUSH MOUNTING............................................................................14
SURFACE MOUNTING.......................................................................15
AC Power Adapter Mounting.............................................................................15
OPERATING INSTRUCTIONS............................................................16
DETECTOR TEST ..............................................................................16
Lp Gas Detection.................................................................................................16
POWER MANAGEMENT....................................................................16
Power Failure.......................................................................................................17
END OF LIFE......................................................................................17
WARRANTY .......................................................................................18

3
READ ENTIRE MANUAL BEFORE USING THIS ALARM
Your new Atwood Propane (LP) alarm is a sophisticated instrument that
has been carefully designed and tested to detect LP build up in a
residential or recreation vehicle environment.
Liquefied Petroleum (LP or Propane) gas can cause hazardous conditions
when found in high concentrations. Gas is known to be found in
recreational vehicles and the proper detection of this gas provides a safe
environment for the occupants of the vehicle.
THIS ALARM HAS A SEVEN YEAR LIFE, SEE END OF LIFE
NOTIFICATION
Liquefied Petroleum Gas Awareness
LP gas is commonly called Propane and is sold commercially as a suitable
fuel in portable and permanent heating and cooking appliances.
It is important to detect LP gas due to its explosiveness at concentrated
volumes. This detector is design to alarm at <25% LEL (legal explosive
limit).
SAFETY ALERT SYMBOLS
Safety symbols alerting you to potential personal safety hazards,
Obey all safety messages following these symbols.
WARNING
Avoid possible injury or death
CAUTION
Avoid possible injury and/or property
damage

4
CAUTION
This alarm will only indicate the presence of gas at the sensor. Gases may
be present in other areas. Read this entire manual before using the alarm.
ACTIVE ALARM PROCEDURES
IF ALARM SIGNAL SOUNDS:
1. Operate Test/Reset button;
1. Immediately move to fresh air-outdoors or by an open door/window. Do
a head count to check that all persons are accounted for: Do not re-enter
the premises move away from the open door/window until the
emergency services responders arrive, the premises have been aired
out, and your alarm returns to its normal condition.
2. Call your local Emergency Services Number or 911
( )
Fill in your local Fire Department number here
3. After following steps 1 & 2, if your alarm reactivates within a 24 hour
period, repeat steps 1 & 2 and call a qualified appliance technician
( )
Too investigate for sources of LP from fuel burning equipment and
appliances, and inspect for proper operation of this equipment. If
problems are identified during this inspection, have equipment serviced
immediately. Note any combustion equipment not inspected by
technician consult the manufacturer’s Instructions, or contact the
manufacturers directly, for more information about LP safety. Make

5
sure that motor vehicles are not, or have not been operating in an
enclosed area or in close proximity of other vehicles.
Note: two self-adhesive emergency contact labels are provided. The
user must add telephone numbers for the local emergency service
provider and for a qualified service technician. User must place one
label next to the alarm. The other label must be placed near a source of
fresh air where you plan to gather in the event the alarm indicates
propane is presence.
WARNING
Test Alarm operation after vehicle has been in storage, before each trip,
and at least once per week during use.
WARNING
Activation of this device indicates the presence of LP gas, which can cause
an explosion and/or fire. This normally indicates a leak in the LP gas piping
or an LP gas appliance.
WARNING:If the information in this manual is not followed exactly, a fire
or explosion may result causing property damage, personal injury or loss of
life
WHAT TO DO IF YOU SMELL GAS
Evacuate all persons from vehicle.
Shut off gas supply at gas container or source.
Do not touch any electrical switch, or use any phone or radio in

6
vehicle.
Do not start vehicle’s engine or electric generator.
Contact nearest gas supplier or qualified Service Technician for
repairs.
If you cannot reach a gas supplier or qualified Service Technician,
contact the nearest fire department.
Do not run on gas supply until gas leak(s) have been repaired.
TESTING
Note: Unit must be powered for three minutes before test can be
performed.
The Test/Rest button is used to verify proper alarm operation. Executing
the test function sounds the alarm and lights up the LED. The test will
sound the alarm twice, with 4 “beeps” in 1 second followed by 5 seconds of
silence.
By pressing the button, you can verify that the alarm sounds and that the
LED functions properly. The alarm is internally monitored while powered to
ensure proper operation and to detect faults.
Important
This detector will only indicate the presence of LP gas at the sensor.
Gases may be present in other areas.
The detector is not suitable as a smoke or fire detector. Not suitable
for installation in hazardous locations as defined in the National
Electrical Code.

7
MODEL DESCRIPTION
LP=Propane
D=12Vdc
A=120Vac
O=OEM
R=Retail
OEM Package
Retail Package
Model
Part
No
Color
Model
Part
No
Color
LP_DOW
36719
White
LP_DRW
36720
White
LP_DOB
31013
Black
LP_DRB
31014
Black
LP_AOW
36522
White
LP_ARW
36523
White
LP_AOB
31005
Black
LP_ARB
31006
Black
Surface
Bracket
35146
Black
Surface
Bracket
35147
White
Adapter
Plate
35180
Black
Adapter
Plate
35181
White
SPECIFICATIONS
Gas Detection
LP
Alarm Level:
< 25% of the LEL of propane
Audio Alarm
Min. 85 dB at 10 Feet
Visual Alarm
LED is red and alarm every 5 seconds
Malfunction
LED is yellow and chirp every 30 seconds
Sensor End of Life Alarm
7 years
Dimensions
3.5” H X 2.3” W
Power Supply
12 volts DC
Supply Current (Max)
1A
Current Draw
75 mA

8
POWER CONSERVATION MODE
Operational Temperature
-35° to 66° C (-31° to 150°F)
Warranty
Limited, 2 year
Alarm Lifetime
7 years ( powered operation)
Standards
ETL tested to UL 1484 Residential and RV
For Service and Information Contact
Atwood Mobile Products LLC, 1874 South Pioneer Road Salt Lake City, Utah
84104-4226
Consumer Service Department, 1120 North Main, Elkhart, IN 46514
USA. Phone: [phone]
ALARM OPERATION
The alarm includes an LED indicator, an audible alarm, and one Test/Reset
button provide interaction and feedback with your alarm and allow you to
troubleshoot your alarm and to determine the proper actions to take. The
alarm operates in seven separate modes that will be identified in this
section.
Power Off Mode
This mode indicates that there is insufficient power provided to the alarm.
The LED and button will not function in this mode. Sufficient power must be
provided to the alarm to exit this mode.
Normal Stand-by Mode
This mode indicates that a gas concentration is continuously monitored. It
also indicates that a gas concentration is at a safe level. In this mode the
LED indicator will be Green. The Test function for the Test/Reset button will
be active.

9
Alarm Mode
This mode indicates that a gas concentration has achieved unsafe levels.
In this mode the LED will be Red. The LP concentration is unsafe the
Propane indicator will be lit. In this mode the audible indicator will signal an
alarm, and the Reset function of the Test/Reset button will be active. This
mode will be exited automatically when LP concentrations fall below 500
ppm for greater than 10 seconds.
Test Mode
This mode indicates that the Test function of the Test/Reset button was
initiated. In this mode, the LED will be Red, and the audible indicator will
signal an alarm. The test/Rest button will not function during this mode.
This mode will be exited automatically within 10 seconds.
Silence / Stabilization Mode
This mode indicates that the alarm is stabilizing for the first 3 minutes after
power-up or after the Reset Function was initiated. In this mode the LED
will be flashing Red. The audible and the Test/Reset button function will be
off. This mode will be exited after 3 minutes. If gas concentrations are still
high after the 3 minutes, the previous alarm will reactivate.
Fault Mode
This mode indicates that a fault has been detected that compromises the
alarm function. This mode will be exited automatically when the fault is
cleared.
If the fault persists, the alarm is not functioning properly and must be
replaced to ensure your safety in the area. During this mode, the LED will
be Yellow and the audible alarm will chirp every 30 seconds.
End of Life Mode

10
The Detector will operate in end-of-life mode after the Detector has been
powered for 7 years +/- 128 days. This represents the operating life of the
sensor used to detect LP gas. After 7 years, the sensor is no longer
reliable and the Detector must be replaced. Once end-of-life mode has
been entered, it is permanent, even after a power out cycle. If the
reset/test button is pressed during end-of-life mode, the audible alarm will
be silenced for 12 hours before being automatically reactivated. The LED
will be flashing Yellow. The audible alarm will chirp every 30 seconds.
Note: two self-adhesive emergency contact labels are provided. The user
must add telephone numbers for the local emergency service provider and
for a qualified service technician. User must place one label next to the
alarm. The other label must be placed near a source of fresh air where you
plan to gather in the event the alarm indicates propane is present.
FUNCTIONS
Mode
LED
Audible Alarm
Power Off
Off
Off
Normal Stand by
Green
Off
Alarm
Red
Alarm
Test
Red
Alarm
Silence/Stabilization
Flashing Red
Off
Fault
Yellow
Chirp every 30 seconds
End-Of-Life
Flashing Yellow
Chirp every 30 seconds

11
IMPORTANT –If this alarm does not test properly return it
immediately for repair or replacement.
A flashing LED blinks once every second
An audible alarm in “fault state”chirps once every 30 seconds
An audible alarm in “alarm state” chirps 4 times every 5
seconds
CAUTION
Installation should be performed by a qualified technician
INSTALLATION INSTRUCTIONS
LP units when possible should be mounted to detect LP gas closer to
the floor due to its heavier than air nature.
Select a location as close as possible to appliances that could be
potential sources of LP gas leaks and where the initial concentration
may be greatest. Do not install directly in front of air or furnace vents.
DO NOT INSTALL next to doors or windows that may dilute the
concentration of any LP gas presents in the environment and
preclude a timely alarm signal.
DO NOT INSTALL the detector in a closet or in a location that could
become obstructed by a curtain, hanging clothes or any other objects.
DO NOT LOCATE detector where it could be exposed to splashes of
water or grease or where it could be damaged by impact with moving
objects (i.e. furniture, feet, etc.).
DO NOT INSTALL on a wall switch controlled by a power line or

12
ground fault circuit.
Usually you will find more than one suitable location that will also
provide ease of viewing and connection to power.
Never use detergents or solvents to clean the alarm, chemicals can
permanently damage or temporarily contaminate the sensor.
Avoid spraying air freshener, hair spray, paint or other aerosols near
the alarm.
The following is a list of substances that at high levels can affect the
sensor and cause an alarm.
Methane, propane, iso-butane, ethylene, ethanol, alcohol, carbon
monoxide, iso-propylene, benzene, toluene, ethyl acetate, hydrogen,
hydrogen sulfide, sulfur dioxides.
Alarm Location for Minimum Protection

13
WIRING
Before routing the wires, disconnect the 12 VDC power supply to avoid
shorting. Make sure that the power connections are made to a properly
fused circuit (15 amp maximum) 1 amp fuse is recommended for single or
multiple detector installation. Can be fused through a distribution panel or
power supply box.
Connection to a Master Storage Switch is acceptable. The alarm will
be off along with all other 12 volt equipment when the storage switch
is turned to the off position. DO NOT USE THE RV WHEN THE
STORAGE SWITCH IS IN THE OFF POSITION.
All connections must be in accordance with the National Electrical
Code in the United States and the Canadian Electric Code in Canada.
All connections must use approved wiring and connectors of an
appropriate size see wiring diagram label. Provide a minimum of 8
square inches to make wiring connection for DC models.
Some models are hard wired with a 110 AC adapter allowing the unit to be
plugged directly into a 110 AC wall outlet.

14
FLUSH MOUNTING
A detachable mounting bracket allows the unit to be mounted as a
flush installation supplied with the unit.
Mounting brackets attached to the surface where the alarm is to be
mounted with four screws, see instructions below.
To install the mounting bracket to the alarm place the alarm inside the
bracket and snap in place see diagram. To remove flush mounting
bracket pull legs away from body of detector.
1. Verify that there is a minimum of (C)1-1/2” inches of free space behind
the wall.
2. Mark on the desired mounting surface a box approximately (A) 2-5/8 ”
inch wide by (B) 3-5/8” high and cutout.
3. Route power leads to the opening and connect wire to the detector
per the wiring diagrams.
4. Install the detector and excess wiring through the opening until
mounting flange is flush to the wall.

15
Mount the unit using the 4 screws provided one in each corner of the
flange.
SURFACE MOUNTING
1. Mark on the desired mounting surface a box approximately 2-1/2” inch
wide by 3-3/8” high and draw an X corner to corner to find center and
cut a 1” inch hole.
2. Route power leads to the opening and connect wires to the detector
per the wiring diagrams.
3. Center and mount the base over the outline done in step 1 with the
two screws provided through the two holes in the mounting base.
4. Slip the unit on to the mount tabs of the base and pull down into place.
AC Power Adapter Mounting
Power supply can be plugged into a 120 VAC wall outlet either on the
surface or behind a wall in a cabinet if so desired.
1. Cut a hole in the wall large enough to slide the adapter through to the

16
outlet. Slide the adapter through the mounting box before screwing
the box onto the wall.
2. Follow the steps outlined above for either surface or flush mounting of
the alarm.
3. Adapter wire is run underneath the mounting bracket when installing a
flush mounted alarm.
OPERATING INSTRUCTIONS
Applying power to the detector will cause the LED to flash red for 3 minutes
and then turn green. Once LED is green, detector is monitoring for LP gas.
DETECTOR TEST
1. Press “TEST” button until alarm sounds; then release the “TEST”
button.
2. The detector will sound twice.
3. The LED will turn red, and then return to normal operation and turn
green after 8 seconds.
4. This test must be carried out not less than once per week to ensure
proper operation of the detector.
Lp Gas Detection
At <25% LEL concentration of LP gas the detector will provide a visual and
audible alarm by sounding the buzzer and turning the LED Red. The
buzzer may be temporarily silenced by pressing the Test/Reset button.
However, until the measured concentration is reduced to a safe level, the
alarm will sound again within 3 minutes.
POWER MANAGEMENT
The operating voltage for the detector is 12 VDC. In these conditions, the
unit will meet the specifications of the UL 1484 standard. The actual

17
voltage applied tothe detector in a recreational vehicle may drop below the
minimum 8 VDC. The Atwood Detector is designed to provide the user with
a Low Voltage Warning before reaching that level and to provide additional
distinct, clear warnings and alarms after the 8 VDC level is reached.
However, if available power supplied to the unit is below the operating
voltage of 8 VDC, the detectors will not detect gas or provide you protection
against dangerous levels of LP.
The following descriptions of operational modes will provide the user with
an understanding of how the detector performs to conserve available
battery power and alert the user to non-operating conditions to reduce to
battery draw-down.
Power Failure
If no power is applied to the unit or there is a failure of power circuits, there
will be no identification from the LED. If there is no indication from the LED,
but the audible alarm sounds when the TEST button is pressed, then the
LED is defective and the user must contact the Atwood Service Center.
WARNING
Actuation of end of life of alarm indicates the alarm is nonfunctioning and
will not detect the presence of LP gases which can KILL YOU.
END OF LIFE
Unit is designed to give maximum life of sensors under normal conditions.
This is seven years from date of installation of unit. A sticker has been
provided to record this information and should be placed next to the unit
were it can be viewed. At the end of life the unit will chirps every 30
seconds and the LED’s will flash Yellow. This state will continue until unit is

18
replaced. If the reset/test button is pressed during end-of-life mode, the
audible alarm will be silenced for 12 hours before being reactivated. The
LED will remain flashing Yellow while the audible alarm is silenced for this
period, at the end of the 12 hours the audible alarm will be turned on and
the alarm will remain on and can’t be silenced. The alarm in this condition
will not sense LP gas. YOU MUST REPLACE ALARM it is not field
repairable.
WARRANTY Atwood Mobile Products LLC
LIMITED WARRANTY
Atwood Mobile Products, LLC warrants to the original owner and subject to
the below mentioned conditions, that this hydro flame™ product will be free
of defects in material or workmanship for a period of two years from the
original date of purchase. Atwood’s liability hereunder is limited to the
replacement of the product, repair of the product, or replacement of the
product with a reconditioned product at the discretion of the manufacturer.
This warranty is void if the product has been damaged by accident,
unreasonable use, neglect, tampering or other cause not arising from
defects in material workmanship. This warranty extends to the original
owner of the product only and is subject to the following conditions:
1. For two years from the date of purchase, Atwood will repair or replace
any part defective in material or workmanship. This warranty includes
reasonable labor charges required to remove and replace the part.
Service calls to customer’s location are not considered part of these
charges and are, therefore, the responsibility of the owner.
2. In the event of a warranty claim, the owner must contact, in advance,
either an authorized Atwood Service Center or the Atwood Service
Department. Warranty clam service must be performed at an

19
authorized Atwood Service Center (a list will be provided at no
charge) or an approved by the Consumer Service Department, 1120
North Main, Elkhart, IN 46514 USA. Phone: [phone].
3. RETURN PARTS MUST BE SHIPPED TO ATWOOD “PREPAID”.
Credit for shipping costs will be included with the warranty clam. The
defective parts become the property of Atwood Mobile Products, LLC
and must be returned to the Atwood Mobile Products, Quality
Assurance Dept., Salt Lake City, Operations 1874 South Pioneer
Road, Salt Lake City, Utah 84104 USA.
4. This warranty applies only if the unit is installed according to the
installation instructions provided and complies with local and state
codes.
5. The warranty period on replacement parts is the unused portion of
the original warranty period.
6. Damage or failure resulting from misuse (including failure to seek
proper repair service). Misapplication, alternations, water damage,
freezing or not using genuine Atwood parts are the owner’s
responsibility.
7. Atwood does not assume responsibility for any loss of use of vehicle,
loss of time, inconvenience, expense for gasoline, telephone, travel,
lodging, loss or damage to personal property or revenues. Some
states do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitations or exclusions may
not apply to you.
8. Any implied warranties are limited to (2) two years. Some states do
not allow limitations on how long an implied warranty lasts, so the
above limitation may not apply to you. This warranty gives you
specific legal rights and you may also have other rights which vary
from state to state.
9. Replacement parts purchased outside of the original furnace warranty

20
carry a 90 day warranty. This includes the part at no charge and
reasonable labor charges to replace it.
This Gas Detector is designed for use in recreation vehicles for warning of
LP gas. Any other use, unless authorized in writing by the Atwood
Engineering Department, voids this warranty.