Xo XOGRILL30L User manual

GAS GRILL
CARE & USE / INSTALLATION
RESIDENTIAL USE ONLY
Page 1

Page 2
Installation, Care And Use Of Your
XO Professional Cooking Product
THIS MANUAL MUST REMAIN WITH THE PRODUCT OWNER FOR FUTURE REFERENCE.
RESIDENTIAL USE ONLY.
This manual covers the following
XO products:
GRILL XOGRILL30L/N
MODELS XOGRILL36L/N
XOGRILL42L/N
FOR OUT DOOR USE ONLY
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN
CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THIS MANUAL THOROUGHLY
BEFORE INSTALLATION, USE OR SERVICING OF THIS EQUIPMENT
NOTE TO INSTALLER
This manual must remain with grill. Check your local building codes for proper method of
installation. In the absence of local codes, this unit should be installed in accordance with National
Fuel Gas Code No. ANSI Z21.58D-2002 USA or CAN/CGA-B149.1/.2 Natural Gas/Propane
Code. (Canada) latest edition or the National Electrical Code ANSI/NFPA No. 70 or the Canadian
Electrical Code CGA 1.6b2005 or latest edition.
*Grill Head Shown With Optional Carts Above
Please note: Pictures and Information may change without notice.

Page 3
XO BBQ Models.......................................................................................... ................ 2
Unique Features & Benefit ............................................................................................................. 4
Product Specification ..................................................................................................................... 5
Overall Grill Dimensions.................................................................................................................. 6
Control Identificatio ...................................................................................................................... 7
Warning Instructions........................................................................................................................ 8
NOTICE: Commonwealth Of Massachusetts .................................................................................. 9
Grill Location.................................................................................................................................. 10
Location Of Your Grill (Using Your Grill During In Windy Conditions)..............................11/12/13/14
Built-In Grill Dimensions ................................................................................................................ 15
Vent Registers ............................................................................................................................... 16
Built-In Sleeve Dimensions............................................................................................................ 17
Electrical Requirements & Hook-up............................................................................................... 18
Wiring Schematics......................................................................................................................... 19
LP Gas Cylinder Safety ................................................................................................................. 20
Gas Requirements & Hook-up........................................................................................ 21/22/23/24
Important Safety Grilling Information............................................................................................. 25
Converting Your Gas Grill......................................................................................................... 26/27
Converting Your Gas Grill Type ..................................................................................................... 28
Regulator Gas Conversion ............................................................................................................ 29
Lighting The Burners ..................................................................................................................... 30
Manually Lighting The Grill............................................................................................................ 31
Burner Type Identificatio ............................................................................................................ 32
Using The XO Grill......................................................................................................................... 32
Direct Cooking Method.................................................................................................................. 33
Indirect Cooking Method................................................................................................................ 33
Using The Rotisserie ..................................................................................................................... 34
Cooking Tips.................................................................................................................................. 35
Burner Cleaning And Adjustment................................................................................................... 36
Warnings ....................................................................................................................................... 37
Grill Cleaning Methods .................................................................................................................. 37
Cleaning The Grill..................................................................................................................... 38/39
Light Bulb Replacement ................................................................................................................ 40
Warranty ........................................................................................................................................ 41
How To Order Repair Parts............................................................................................................ 42
Contacting XO ...............................................................................................................................43
XO Parts List................................................................................................................................. 44
Parts Diagram................................................................................................................................ 45
Service Record.............................................................................................................................. 46

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4
unique features and benefits
The XO gas grill has some of the most unique grilling features
that will enhance your grilling experience and make you that
“master chef”. These features include Stainless Steel Grills,
enhanced briquette and flame tamers to create even heat and
minimize flair-ups, IR Burner and Cast Stainless H-burner
designs to enhance the overall searing of your food.
Professional Grade stainless steel cooking grates allow for
the food to be cooked quickly and with control. The heavy
duty grates heat up evenly and sear the natural juices into
the food.
Unique design technology is placed into this “one of a kind”
briquette and Flame Tamer system. This briquette system
pump’s even heat onto the food at the same time as
vaporizing overflow juices that create added flavor in the food.
Professional cast stainless H-Style burner technology is
used in the XO gas grill. This new Burner has “even heat
distribution” that allows for even heating for the front and
back across the entire heat zone.
Your XO grill includes a Infrared Burner produced in
California by the #1 manufacturer of infrared technology.
Temperature ranges from 300 to 1000 degrees. This burner
will soon become your favorite.

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Description
36" XO GRILL 42" XO GRILL42
Main Cooking Area Dimension 665 869
Total Cooking Area Sq. In.
(Includes Warming Rack) 978 1235
Gas Type NAT/LP NAT/LP
LP Conversion Kit Packed w/Grill Packed w/Grill
Orifices Main Burners N T Gas 3 - 2.26 mm 4 - 2.26 mm
Orifices Main Burners L Gas 3 - 1.40 mm 4 - 1.40 mm
Orifices Rear Burner N T Gas 1.5 mm 1.5 mm
Orifices Rear Burner L Gas 1.1 mm 1.1 mm
Burner Type
Burner BTU's (Each/Total) 22,000 / 66,000 22,000 / 88,000
Cooking Grids
2- 5/16" SS 4 - 5/16" SS
Flame Tamers
2 - SS Ceramic 3 - SS Ceramic
Heat Zone Dividers 2 - SS
(Removable)
3 - SS
(Removable)
Rear Rotisserie Burner
11,000 BTU
Ceramic
11,000 BTU
Ceramic
Rotisserie Kit Optional Optional
Lid Assembly
Fully Welded
w/Polished
Edges
Fully Welded
w/Polished
Edges
Control Panel Fully Welded Fully Welded
Drip Tray Fully Welded Fully Welded
Ignition Type (No Battery) Push And Turn
Flame Thrower
Push And Turn
Flame Thrower
Warming Rack SS Tilt And
Lock Away
SS Tilt And
Lock Away
Temp Gauge Hood Hood
Control Panel Lights LED Blue 12V LED Blue 12V
Interior Work Lights 2 - Halogen 12V 2 - Halogen 12V
Cutout Dimensions For Grill 10 1/8H x 22D
x 34 3/4W
10 7/8H x 24D
x 40 3/4W
product specifications
30" XO GRILL
NAT/LP
Packed w/Grill
2 - 2.26 mm
2 - 1.40 mm
1.5 mm
1.1 mm
1-Cast SS
1-IR Burner
22,000 / 44,000
3 - 5/16" SS
1 - SS Ceramic
1 - SS
(Removable)
11,000 BTU
Ceramic
Optional
Fully Welded
w/Polished
Edges
Fully Welded
Fully Welded
Push And Turn
Flame Thrower
SS Tilt And
Lock Away
Hood
LED Blue 12V
2 - Halogen 12V
10 7/8H x 24D
x 28 3/4W
2- Cast SS
1-IR Burner
3- Cast SS
1-IR Burner
598
851
please read and follow
all safety instructions

Page 6
specifications
xo grill 30
xo grill 36
xo grill 42

Page 7
specifications
ignition position:
Push Burner control knob "IN" and to the "LEFT. Wait 3-5
Seconds and Ignite b y hearing "CLI CK". Alway s turn to the
"OFF" position when done.

Page 8
• Read this manual carefully and completely before using your grill, to reduce the risk of
fire, burn hazard or other injury and to ensure proper installation and servicing.
• Never use rusted, dented or damaged propane cylinders. Never store additional or
empty propane cylinders in the grill cabinet or in the vicinity of this or any other gas or
electrical appliance. Do not store propane cylinders indoors or on their sides for gas
may escape. Gas cylinders are highly flammable
•No Children should ever be left alone or unattended in an area where a grill is located.
Place your grill well away from areas where children play. Do not store items that may
interest children in or around the grill, in the cart or in the enclosure or Island.
• Never move the grill when hot. When in use, portions of the grill are hot enough to
cause severe burns.
• Always maintain the required clearances from combustibles as detailed. The grill is
designed for outdoor use only. Never use in a garage, building, shed, breezeway or
other enclosed area. Do not use this grill under any unprotected overhead combustible
construction. Combustible material exposed to heat will catch on fire
• Gas grills are not designed or certified for and are not to be installed in or on a
recreational vehicles, portable trailers, boats or any other moving installation including
commercial use.
• Always have a Fire Extinguisher accessible — never attempt to extinguish a grease fire
with water or other liquids.
• Store your grill in a well-ventilated area. If stored indoors, detach and leave L.P. cylinder
outdoors in a well-ventilated area away from heat and away from where children may
tamper with it. Always leave tank outdoors.
• Keep any electrical supply cord and the fuel supply hose away from any heated surfaces.
Electrical cords should be placed away from walkways to avoid tripping hazard.
• Do not repair or replace any part of the grill unless specific recommended in this manual.
Other service should be performed by a certified and qualified BBQ technician.
• If the grill is installed by a professional installer or technician, be sure that he/she shows
you where your gas supply shut-off is located. All gas lines must have a shut-off that is
readily and easily accessible. If you smell gas, check for gas leaks immediately. Check
only with a soap and water solution. Never check for gas leaks with an open flame
• Inspect the LP gas supply hose prior to each use of the grill. If there is evidence of
excessive abrasion or wear, or the hose is cut, it must be replaced before using the grill.
• The outdoor cooking gas appliance and its individual shutoff valve must be
disconnected from the gas supply piping system during any pressure testing of that
system at test pressures in excess of 0.5 psi (3.5 kPa).
• The outdoor cooking gas appliance must be isolated from the gas supply piping system
by closing its individual manual shutoff valve during any pressure testing of the gas
supply piping system at test pressures equal to or less than 1/2 psi (3.5 kPa).
WARNING
! !
warning before use

Page 9
notice: commonwealth of massachusetts
1. Massachusetts requires all gas be installed using a plumber or gas fitter carrying the
appropriate Massachusetts license.
2. All permanently-installed natural gas or propane installations require a “T” handle type
manual gas valve be installed in the gas supply line to this appliance.
3. This does not apply to portable propane installations using a 20 pound cylinder.
WARNING! CALIFORNIA PROPOSITION 65
1. The burning of gas cooking fuel generates some by-products which are on the
list of substances which are known by the State of California to cause cancer or
reproductive harm.
2. California law requires businesses to warn customers of potential exposure to such
substances. To minimize exposure to the substances, always operate this unit
according to the use and care instructions found in this manual. Be certain to provide
adequate ventilation when cooking.
3. Warning: Handling the brass material on this product exposes you to lead, a chemical
known to the state of California to cause cancer, birth defects or other reproductive
harm. (Wash hands after handling this product.)
4. For more information go to this website: www.p65warning.ca.gov
!
warning before use

Page 10
grill location
• Never install this product into a combustible enclosure without an insulated jacket.
Doing so could result in fire, property damage and personal injur . Combustible
material is "anything" that can catch on fire
• Never locate the grill under a roof or overhang, in a building, garage, shed or other
such enclosed area.
• Installation must conform with local codes or, in the absence of local codes, with either
the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Natural Gas and propane Installation
Code, CSA B149.1, or Propane Storage and Handling Code, B149.2, in Canada.
WHERE IS THE WIND COMING FROM?
When selecting a suitable location, consider
important factors such as exposure to the
wind and foot-traffic patterns
If you have a free standing grill, position it
so the prevailing wind blows into the front
control panel (at your back when grilling),
supporting the proper front of BBQ to
rear of BBQ airflow. Built-in grills located in
areas with prevailing winds should be
protected by a wind barrier.
Winds hitting the back of the grill directly
may cause problems, as well as wind
blowing along the hood opening
HOW LONG IS YOUR GAS RUN GOING
TO BE?
Keep all gas supply lines as short as
possible because gas lines lose pressure
over distance and with each elbow and tee
that is added. This drop in pressure affects
grill performance.
CHECK THE BBQ IS LEVEL?
Proper leveling during installation is critical.
A grill that is out of level will cause erratic
burner combustion and inefficient, uneven
heating. A carpenter’s spirit level should be
used to level the grill both front-to-back and
side-to-side.
If the floor is uneven or has a decided
slope, re-leveling may be required each
time you move a freestanding unit.
WARNING
! !
Be sure wind doesn’t blow into the back of the hood gap.
location of your grill

Page 11
location of your grill
location of your grill
USING YOUR GRILL IN
WINDY CONDITIONS:
• As a high-performance gas appliance,
your XO grill requires significant
amounts of air to support the burner
combustion process. Your grill has been
engineered to take air in through the
control panel area, and exhaust the
combustion out through the gap between
the front and rear hoods
• Using your grill in windy conditions can
disrupt the proper flow of air through you
grill, leading to reduced performance, or
in certain severe cases, causing heat
buildup in the control panel area. This
can lead to problems such as having the
control knobs getting hot or melting, or
burn hazards when the control panel
surfaces become too hot to touch.
• If you have a freestanding grill, it is best
to position the unit so the prevailing wind
blows into the front control panel (or at
your back), thus supporting the proper
airflow. Winds hitting the back of the grill
directly are the most likely to cause
problems, although wind blowing along
the hood gap can also be a problem.
• Please note that damage to your grill
resulting from use in windy conditions,
such as melted knobs or igniter wires, or
control panel discoloration from heat
build-up, are excluded from warranty
coverage.
• Outdoor grilling can create more heat than
indoor kitchen ranges.
BUT THERE ARE A FEW THINGS
YOU CAN DO TO FURTHER PREVENT
THE POSSIBILITY OF IMPROPER
HEAT BUILDUP:
• If you suspect the grill is overheating,
using an heat resistant mitt, open the
front hood. Then adjust the burner
control knob to a lower setting. Do
not grab the knobs without testing the
temperature of them.
• Install your grill with a wind break
behind it. This is a wall, fence or
anything that will disrupt the wind
directly hitting the gas grill.
• Situate the grill so prevailing winds are
not blowing into the rear of the grill.
• On windy days, be careful not to
leave the hood down for more than 15
minutes when the burners are on high.
(Never leave the grill unattended when
in operation)
Wind hitting the back of the grill can disrupt proper exhaust.

Page 12
location of your grill
location of your grill (cont'd.)
• The grill drops into the cutout opening
and sits on the sides and back of the
grill. There is no need to fasten the grill
to the island. The gas grill must be able
to be removed for general maintenance
so do not grout sides or fasten in.
• For the hood to open there is a minimum
of 5" clearance behind the hood. There
is a required 12" clearance on each
side of the Gas Grill. Remember that
combustible materials should not be
located behind the grill, because the
5" space doesn't satisfy the distance
required from a combustible surface.
See below clearance to combustibles .
CLEARANCE TO COMBUSTIBLE
CONSTRUCTION:
Minimum clearance from sides and back of
unit to adjacent combustible construction
below top of unit are 14" from sides and
16" from back. Use your grill at least 16"
away from any wall or surface.
Use your grill 16" or more away from
any combustible objects that can melt or
catch fire such as vinyl or wood siding,
fences, overhangs, or any other sources
of ignition; including pilot lights and live
electrical appliances.
Do not use your grill under any overhead
combustible construction. Never use
your gas grill in a garage, porch, shed,
breezeway, or any other enclosed area.
Never use your gas grill on a balcony,
deck, or patio above the ground floor of
your home.
Installing this product into a combustible
enclosure without an insulated jacket could result
in fire, property damage and personal injur .
WARNING
! !
BUILT IN LOCATION:
• The XO Built in model is designed for
easy installation into a non-
combustible masonry enclosure.
• The BBQ must be surrounded by
non-combustible material like Brick or
Hardibacker but should never be
installed into a wood island without a
insulated sleeve (accessory)
surrounding the Gas Grill.
5"
Hood Clearance
14"
Distance Minimum
16"
16"
Combustible
Materials

location of your grill
location of your grill (cont'd.)
CLEARANCE TO COMBUSTIBLE CONSTRUCTION (CONT’D):
•
If installed under any combustible construction the area above the cooking surface of the
grill must be covered with an approved exhaust hood.
• It is highly recommended the hood be sized with a 3” overhang on all exposed sides.
• The exhaust hood shall provide no less than 1,000 CFM of proper exhaust ventilation.
• The exhaust hood must be approved for outdoor installation and used with a dedicated
GFCI branch circuit.
Page 13
5”
min. 30” to 36”
We recommend oversizing the hood by 3" on
each side to maximize efficiency and capture
space
For example;
A 36" Grill would require a 42" Hood
NON-COMBUSTIBLE
BACKSPLASH
REAR WALL
OVERHEAD CONSTRUCTION
TYPICAL EXHAUST HOOD INSTALLATION
OBSERVE ALL MINIMUM CLEARANCES
Non-Combustible Construction
Sides 12” Back 5”
Combustible Construction
Sides 14” Back 16”
Combustible Overhead Construction
Must Be Protected By An Approved Hood
Use Of An Approved Hood Is Highly
Recommended With Non-Combustible
Overhead Construction
60”
Minimum above
cooking surface to
non-combustible
overhead.

Page 14
exhaust hoods
outdoor rated exhaust hoods
AVAILABLE IN THREE SIZES
All Models:
33” Deep
18” High to the top of the Canopy
10” Dia. Exhaust Top or Rear
All Models have the following features:
Top or Rear Venting
304 Stainless Steel Construction
Professional Stainless Steel Baffle Filters
Four LED Lamps
Rotary Controls
Two High Velocity Blowers capable
of exhausting up to 1,200 CFM
Matching SS Top Duct Cover
13 1/2”
18”
36”
10” Dia.
36”
7 7/16”
MODEL: XOGVENT36
36” Wide - use with XOGRILL30 & XOGRIDDLE30
MODEL: XOGVENT42
42” Wide - use with XOGRILL36
MODEL: XOGVENT48
48” Wide - use with XOGRILL42

is
Page 15
XOG
XO
10 1 22 34 3/4
3 2 XOG 24
4
ABC
6
42
dimensions
built in grill dimensions Must conform with local codes or, in the absence of local
codes, with either the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, or the Natural Gas and Propane
Installation Code, CSA B149.1, or the Propane Storage
and Handling Code, CSA B149.2, or the Standard for
Recreational Vehicles, ANSI A119.2/NFPA 1192, and
CSA Z240 RV Series, Recreational Vehicle Code, as
applicable

island vent
REQUIRED FOR NATURAL GAS
& LP GAS
Ground to
Vent Bottom
LP Gas
on
BOTH SIDES
of Island
INSULATED SLEEVE INSTALLATION INSTRUCTIONS
IMPORTANT:
Before you build the frame, you must take into consideration the total
weight of the sleeve, grill and any finishing materials
Review the table on the next page for the
proper framing dimensions for the insulation
sleeve. Determine the entry point for both
the gas inlet and electric connections. Make
the 4" square holes for gas and electrical
connections (rear or bottom access) based
on your requirements.Note that the gas and
electrical connections are located on the
right side.
A "Level" should be used to assure that
the framing is level, both front to back and
side to side.
NOTE: Never under any circumstance
should you install the transformer or run a
gas hose in between the grill and the
SLEEVE INSTALLATION
Position the sleeve into the frame. No part
of the combustible enclosurecan protrude
above the top surface or in front of the face
surface of the liner.
GRILL INSTALLATION
Use the proper equipment to support the
grill. Place the grill into the sleeve and place
it over the sleeve lip across the back and
sides. The liner is designed to support the
grill without additional fasteners.
FINISHING
If desired any gap remaining between the
sleeve and the combustibleenclosure may
be filled with a non-combustible sealant
insulated sleeve
10 Square Inch Minimum
Each Register.2 Per
Side. 1 HighAnd 1 Low
2 1 /4" Minimum
Page 1 6

Page 17
insulatedsleeve
WARNING: Combustible Material will ignite
if used without an insulated liner to protect the
combustible material.

Page 18
electrical requirements
electrical requirements and hook-up
WARNING! ELECTRICAL GROUNDING
• Product installation must meet local electric codes or, in the absence of local codes, the
latest edition of the National Electrical Code ANSI/NFPA No. 70 or the Canadian Electrical
Code CGA 1.6b2005.
• Use only a Ground Fault Interrupter (GFI) protected circuit with this outdoor cooking
gas appliance.
• This grill is equipped with a three prong (grounding) electric plug for your protection against
shock hazard and must be plugged directly into a properly grounded three prong outlet.
Never cut or remove the grounding prong from this plug.
• Use only extension cords with a 3 prong grounding plug, rated for the power of the
equipment, and approved for outdoor use with a “W-A” marking.
• To protect against electric shock, do not immerse any part of the power cord, an extension
cord or any plugs in water or other liquid.
• Unplug the product from the outlet when not in use and before cleaning. Allow it to cool
before putting on or taking off parts.
• Do not let the cord touch hot surfaces.
• Do not use an outdoor cooking gas appliance for purposes other than intended.
• Do not operate any outdoor cooking gas appliance with a damaged cord, plug, or after the
appliance malfunctions or has been damaged in any manner. Contact the dealer for repair.
tcennoc,ksirdrazahkcohstsniagatcetorpoT
only to properly Grounded Outlet.
CAUTION
! !
CALIFORNIA PROPOSITION 65
The electrical supply cord and plug of the
Rotisserie and Transformer contain chemicals,
including lead, known to the State of California
to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
WARNING
! !
This appliance, when installed, must be electrically
grounded in accordance with local codes or, in the
absence of local codes, with the National Electrical
Code, ANSI/NFPA 70, or the Canadian Electrical
Code, CSA C22.1. Keep any electrical supply cord and
the fuel supply hose away from any heated surface.
WARNING
! !
!

Page 19
wiring schematics
NOTE: This grill uses a transformer to provide power to the LED lights and work lights.
The transformer should be secured to the island walls or cart back wall. Plug only into a
Ground Fault Interrupter (GFI) protected circuit.
wiring schematics
NOTE: On install the electrical transformer to the cart use the 4 Bolts provided in your
hardware pack. The transformed has 4 holes that will match up to the holes on the back
panel of the cart. face the transformer main electrical wire "facing down" and the wire from
the gas grill will connect securely into the top of the transformer making a watertight fit.
Do not store a spare LP-Gas tank under or near
this appliance. Never fill the tank beyond 80
percent full; and if the information is not followed
exactly, a fire causing death or serious injury
may occur.
!
WARNING
!

Page 20
your gas grill is adjusted to have an outlet
pressure of 11" water column (W.C.) for
connection to an LP gas tank. Only use the
regulator and hose assembly supplied with
your gas grill.
Replacement hose and regulator assembly
must be identical to those listed in the parts
list of this Operator's Manual as specified by
XO.
Have your LP Gas dealer check the release
valve after every filling to ensure it remains
free of defects. Always keep LP Gas tank in
upright position. Do not subject the LP Gas
tank to excessive heat.
Never store an LP Gas tank indoors. If you
store your gas grill in the garage always
disconnect the LP Gas tank first and store it
safely outside.
LP Gas tanks must be stored outdoors in a
well-ventilated area and out of the reach of
children. Disconnected LP Gas tanks must
not be stored in a building, garage or any
other enclosed area.
The regulator and hose assembly can be
seen by opening the cart or island doors.
They must be inspected before each use of
the grill. If the hose is damaged in any way, it
must be replaced prior to using the grill again.
The Gas Grill is setup to operate with a
LP Gas Cylinder equipped with an OPD
(Overfilling Prevention Device)
LP Gas grill models are designed for use
with a standard 20lb. Liquid Propane Gas
(LP Gas) tank (sold separately . Never
connect your gas grill to an LP Gas tank
that exceeds this capacity. A tank of
approximately 12 inches in diameter by
18-1/2 inches high is the maximum size
LP Gas tank to use. You must use an
"OPD" gas tank which has a listed Overfill
Prevention Device. This safety feature
prevents tank from being overfilled which
can cause a malfunction of the LP Gas tank.
The LP Gas tank must be constructed
and marked in accordance with the
Specifications for LP-Gas Cylinders of the
U.S. Department of Transportation (D.O.T.
or the National Standard of Canada, CAN/
CSA-B339, Cylinders, Spheres and Tubes
for Transportation of Dangerous Goods,
and Commission; as applicable.
The LP Gas tank must have a shutoff valve,
terminating in an LP Gas supply tank valve
outlet, that is compatible with a Type 1 tank
connection device. The LP Gas tank must
also have a safety relief device that has a
direct connection with the vapor space of
the tank. The tank supply system must be
arranged for vapor withdrawal.
The LP Gas tank must have a collar to
protect the tank valve. Never connect an
unregulated LP gas tank to your gas grill.
The gas regulator assembly supplied with
lp gas safety
SAFETY NOTICE
Do not leave tank on while
not in use. Always turn
tank to OFF position.
Vapor will be released if
the tank is heated up while
not in use.