Weber Summit 450 Guide

SUMMIT 425 & 450

LP Gas Barbecues

Step-By-Step Guide

Summit 425 LP

WARNING: F o l l ow all leak ch e ck pro c e d u r e s
carefully in this manual prior to barbecue
operation. Do this even if barbecue was
dealer assembled.

NOTICE TO INSTALLER: These instructions
must be left with the owner and the owner
should keep them for future use.

THIS GAS APPLIANCE IS DESIGNED FOR
OUTDOOR USE ONLY.

WARNING: Do not try to light this appliance
without reading "Lighting" instructions
section of this manual.

Summit 450 LP

FOR YOUR SAFETY

1. Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.

2. An LP tank not connected for use shall
not be stored in the vicinity of this or
any other appliance.

FOR YOUR SAFETY
If you smell gas:

1. Shut off gas to the appliance.

2. Extinguish any open flame.

3. Open lid.

4. If odor continues, immediately call your
gas supplier or your fire department.

97464 3/97

REMOVE PACKAGED CONTENTS

2

TOOLS NEEDED

SUPPLIES NEEDED

7/16 inch open end or an adjustable wrench

Your LP tank is shipped empty for safety. After setting the
LP fuel scale you will need to fill it. (See Step "Fill LP t a n k . " )

You will need a soap and water solution to check for gas
leaks. (See Step "Check for gas leaks.")

Note - The hardware size of nuts, bolts and screws is
given. For example "1/4-20 x 2 inch bolt" means a bolt
1/4 inch in diameter with 20 threads to the inch, 2 inches
long. On a small screw for example, "6-32 x 1/2 inch
screw" means a number 6 screw, with 32 threads to the
inch, 1/2 inch long.

While we give much attention to our products,
unfortunately an occasional error may occur. If a part
is missing, do not go back to the store. Call the Weber
Customer Service Center toll free 1-888-33-SUMMIT
(1-888-337-8664) to receive immediate assistance.
Have your owner’s manual and serial number of the
barbecue available for reference.

1/4-20 x 1/2 inch bolt (2)

Nylon washer (4)

Right panel
(Summit 450 only)

Flavorizer bar (7)

Optional Steam-N-Chips Smoker

Note: If you use the Steam-N­Chips Smoker, you will be
removing one of the Flavorizer
bars.You have a full set of
Flavorizer bars to use when not
using the Steam-N-Chips smoker.

Cooking grate (2)

Warm-up rack

Burner control knob (4)

Bottom tray

Catch pan

Catch pan holder

REMOVE PACKAGED
CONTENTS (CONTINUED)

1/4-20 keps nut (2)

ADD COOKING MODULE

Drip pan

Bottom wire rack
(For the Summit 450 only)

Stainless steel bottom shelf (2)
(For the Summit 425 only)

Stainless steel work surface (2)

Caution: Use two people to lift and install the
cooking module.

Lift the cooking module out of the packaging. The gas
line, regulator, and bracket will hang below the module.

Lower the module on an angle into the cart so the control
panel is under the front top frame rail. Figure 1. Guide the
gas line regulator and bracket while lowering the module
into the cart.

Flange

View from

right

Condiment holder (2)

Tool holder (4)

Tank scale

LP tank

Figure 1

Lower the back of the cooking module down so it is
between the two flanges in the back panel. Figure 2.
Use caution not to scratch the paint of the cooking
module when setting the module between the flanges.

The cooking module should be level, setting on the front
and rear top frame rails.

Flange

Rear top

Front top
frame rail

frame rail

View from

right

Figure 2

3

MOUNT REGULATOR BRACKET

You will need: two 1/4-20 x 1/2 inch bolts, two nylon
washers, two 1/4-20 keps nuts, and a 7/16 inch or open
end wrench.

Position the top of the regulator bracket over the top
crosspiece. Slip a washer over bolts and insert through
top of bracket and crosspiece. Add keps nut. Tighten.
Figure 3.

Reinstall the bottom bolt through the right panel and the
tank panel. Add the keps nut and tighten. Either open the
right door or reach underneath the cart to install the keps
nut. Figure 5 (a).

Note: If the tank panel does not stay in place during the
assembly of the right panel, reinstall the tank panel
before installing the right panel.

CAUTION: Make sure the tabs of the tank panel are in
the slots of the top support. Figure 5 (b).

(a)

(b)

View from front

underside

Figure 3

ADD RIGHT PANEL

FOR THE SUMMIT 450

You will need: right panel.
Remove the bolt and nut holding the tank panel in place

at the bottom. Figure 4 (a). Hold the hose and regulator
up and out of the way. Set the right panel in place, with
the hose and regulator on the outside of the panel.

Tank
panel

Hose and

regulator

Slots
Tabs

Figure 5

View from inside

Figure 4

(a)

4

ADD FUEL SCALE

FOR THE SUMMIT 450

Figure 6

INSTALL FLAVORIZER BARS

You will need: seven Flavorizer bars.
Set the Flavorizer bars front to back over the burners in the

slots of the Flavorizer Bar/cooking grill support. Figure 7 (a).

Figure 7

Note:The fuel scale is already assembled on the
Summit 425.

You will need: fuel scale assembly, two 1/4-20 wing nuts
and two nylon washers.

Slip the bolts on the back of the fuel scale assembly
through the two small holes in the tank panel and right
panel. Make sure indicator rod of fuel scale is on the left
side of the wheel frame.

Add washers, then wing nuts and tighten. Figure 6.

a)

Flavorizer Bar/cooking grill
support

Flavorizer Bar

Slot

(a)

View from back

(b)

Right panel

View from front

5

INSTALL STEAM-N-CHIPS SMOKER

You will need: smoker box.
Remove the center Flavorizer bar (the one that is not over

a burner). Set the handles of the Steam-N-Chips smoker
on the Flavorizer bar holder. Figure 8 (a).

Note: For directions on how to use the Steam-N-Chips
smoker, see the Operating Guide..

INSTALL WARM-UP BASKET

Figure 10

a)

Figure 8

You will need: warm-up basket.
Install one end of the warm-up basket into the hole on the

right end of the lid and the other end into the slot in the
left end of the lid. Figure 10 (a).

a)

INSTALL BURNER CONTROL KNOBS

ADD COOKING GRATES

You will need: two cooking grates.
The cross-rail of the cooking grate goes down. Set the

cooking grates in place next to each other. Figure 9.

You will need: four burner control knobs.
Push on the burner control knobs. Figure 11.

Figure 11

Figure 9

6

INSTALL BOTTOM TRAY

You will need: Bottom tray, catch pan holder, catch pan,
and one drip pan.

Figure 12

Figure 13

Slide the bottom tray into the mounting slots under the
bottom of the cooking box with the finger grip of the catch
pan toward you. Figure 14.

CAUTION: Do not line the bottom tray with aluminum
foil. It can cause grease fires by trapping the grease
and not allowing grease to flow into the catch pan.

Note: It may be easier to install the catch pan holder by
removing the catch pan from the holder.

Hook the ends of the catch pan holder into the hole in the
bottom tray. Figure 13.

Figure 14

View from front of the Cooking Box

Mounting

slots

Tabs of

bottom tray

Figure 15

Put the foil drip pan into the catch pan.

7

INSTALL BOTTOM SHELVES

INSTALL CONDIMENT HOLDERS AND WORK SURFACES

You will need: two condiment holders and two stainless
steel work surfaces.

Place the condiment holders on the ends of the frame.
Set the work surfaces on top of the condiment holders
and the barbecue frame. Figure 17.

For the Summit 425, place the stainless steel bottom
shelves between the frame supports.

For the Summit 450, place the bottom rack under the
cart between the frame supports. Lift up one end of the
rack so it clears the crosspiece. Continue to lift until the
opposite end clears the opposite crosspiece. Set the rack
in place on both crosspieces.

Summit 425

Figure 17

Summit 450

Figure 16

8

SET LP FUEL SCALE

You will need: LP tank (empty).

Note - For accuracy, the fuel scale must be set with an
empty tank.

We utilize various LP tank manufacturers. Some of the
tanks we receive have differing top collar assemblies.
(The top collar is the metal protective ring around the
valve.) One series of tanks mounts with the valve facing
front. The other tanks mount with the valve facing away
from the fuel scale. These types of tanks are illustrated in
Figure 18.

Loosen the tank lock wing nut. Tighten so the lock is held
up out of the way. Figure 18 (a). Lift and hook the tank onto
the fuel scale. With an empty LP tank, adjust the fuel scale
setting to E with scale setting (top) wing nut. Figure 18 (b).

CAUTION: Do not remove adjustment wing nut from
tank scale.

After adjusting tank scale, push tank down a couple of
times to check that the tank scale is set on “E”.

Figure 18

FILL LP TANK

To fill, take the LP tank and filler adapter to an RV center
or look up gas-propane in the phone book for other
sources of LP gas.

WARNING: We recommend that your LP tank be filled
at an authorized LP gas dealer by a qualified
attendant, who fills the tank by weight.

IMPROPER FILLING IS DANGEROUS.

Tell your LP dealer that this is a new LP tank. The air
must be removed from a new LP tank before the initial
filling. Your LP tank dealer is equipped to do this.

CAUTION: If you exchange your LP tank, make sure
you get a similar tank in return.Your LP tank is
equipped with a quick-disconnect valve. Other LP
tanks are not compatible with your barbecue
connection.

The LP tank must be installed, transported and stored in
an upright position. LP tank should not be dropped or
handled roughly.

Never store or transport the LP tank where temperatures
can reach 125° Fahrenheit (too hot to hold by hand – for
example: do not leave the LP tank in a car on a hot day).

For full instructions on safe handling of LP tanks, see
"General Tank Information".

Tank lock
wing nut

Scale setting
wing nut

(a) (b)

9

GENERAL TANK INFORMATION

LP Tank Manufacturer

The LP tank manufacturer is responsible for the materials,
workmanship and performance of the tank. If the tank has
a defect, malfunctions, or you have a question regarding
the tank, call the tank manufacturer's customer service
center.The phone number is on the warning decal which is
permanently attached to the tank. If the tank manufacturer
has not resolved the issue to your satisfaction, then call
Weber-Stephen Products Co., Customer Service Center.

For Your Safety

Your LP tank is shipped empty for safety. After setting the LP
fuel scale you will need to fill it. Refer to Filling your LP t a n k .

Safe handling tips for LP Gas

■ Liquid Propane (LP) gas is a petroleum product as are
gasoline and natural gas. LPgas is a gas at regular
temperatures and pressures. Under moderate pressure,
inside a cylinder, LPgas is a liquid. As the pressure is
released the liquid readily vaporizes and becomes gas.

■ LP gas has an odor similar to natural gas. You should
know this odor.

■ LP gas is heavier than air. Leaking LP gas may
collect in low areas that prevent dispersion.

■ The LP tank must be installed, transported and stored
in an upright position. LP tanks should not be
dropped or handled roughly.

■ Never store or transport the LP tank where
temperatures can reach 125° F (too hot to hold by
hand - for example: do not leave the LP tank in a car
on a hot day).

■ The LP cylinder supply must be arranged for vapor
withdrawal.

Note - A refill will last about 18 hours of cooking time at
normal use. The fuel scale will indicate the propane
supply so you can refill before running out.You do not
have to run out before you refill.

■ Treat "empty" LP tanks with the same care as when
full. Even when the LP tank is empty of liquid there

still may be gas pressure in the cylinder. Always

close the tank valve before disconnecting.

■ Do not use a damaged LP tank. Dented or rusty LP
tanks or LP tanks with a damaged valve may be

hazardous and should be replaced with a new one

immediately.

■ The connection where the hose connects to the LP
tank must be tested for leaks each time the LP tank is

reconnected. For example, test each time the LP tank
is refilled.

■ Be sure the regulator is mounted with the small vent

hole pointed downward so it will not collect water.

This vent should be free of dirt, grease, bugs etc.

■ The LP tank and connections supplied with your

Weber Gas Barbecue have been designed and tested
to meet government, American Gas Association and

Underwriters Laboratories requirements.

■ Replacement LP tanks supplied by Weber satisfy the
requirements. Check to be sure the tank has a D.O.T.

certification, and has been tested within five years.

Your LP gas supplier can do this for you. Figure 19.

If you have questions about spare LP tanks, please
call Weber-Stephen Customer Service.

■ All LP tank supply systems must include a collar to
protect the tank valve.

■ The LP 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. ) .

D.O.T. Certification (example)

20 lb LP tank

Figure 19

Date Tested

10

CONNECT FILLED LP TANK

WARNING: Make sure that the LP tank valve is
closed. Close by turning clockwise.

Hook the LP tank onto the fuel scale. Loosen the tank
lock wing nut. Swing the tank lock down. Tighten the wing
nut. Figure 20.

(a)

Collar

Male
fitting

Tank lock
wing nut

Figure 20

The hose and regulator are connected in the following
manner:

Slide back the collar of the quick disconnect on the tank
valve. Push the male fitting of the regulator into the quick
disconnect, and maintain pressure. Slide the collar closed.
Figure 21 (a). Figure 21 (b) shows the quick disconnect
engaged and various components of the tank and
r e g u l a t o r. Regulator vent hole should be at 3, 6, or 9
o'clock. It should not be pointed up. Figure 21 (c).

Regulator

Regulator
vent

Hose

(b)

Tank valve

Quick disconnect
engaged

(c)

Valve handwheel
close clockwise

Pressure
relief valve

Tank

Turn so regulator vent
does not collect water

11

Figure 21

CHECK FOR GAS LEAKS

Remove burner control knobs, control panel and front panel

Front edge of the
control panel

Put your fingers under the front edge of the control panel
and lift up and pull evenly toward you. Figure 23 (a).

WARNING

The gas connections of your Weber
Gas Barbecue have been factory tested. We
do however recommend that you leak check
all gas connections before operating your
Weber Gas Barbecue.

Remove the burner control knobs. The control panel is
separate from the front panel. The control panel needs to
be removed before the front panel can be removed.
Figure 22.

Control
panel

(a)

Front Panel

Control Panel

Figure 23

Pull the front panel up and out of the cooking box
assembly. Figure 24.

Front
panel

Figure 22

Front panel

Figure 24

12

CHECK FOR GAS LEAKS
(CONTINUED)

Do not use an open flame to check for gas
leaks. Be sure there are no sparks or open
flames in the area while you check for
leaks.This will result in a fire or explosion
which can cause serious bodily injury or
death and damage to property.

WARNING: You should check for gas leaks every time
you disconnect and reconnect a gas fitting.

You will need: a soap and water solution and a rag or
brush to apply it.

Note: Since some leak test solutions, including soap and
water, may be slightly corrosive, all connections should be
rinsed with water after checking for leaks.

WARNING: Make sure all burner control knobs are in
the OFF position, including the side burner, if the
barbecue has a side burner.

Turn on gas supply by turning the tank valve handwheel
counterclockwise.

DANGER

Check for leaks by wetting the connections with the soap
and water solution and watching for bubbles. If bubbles
form or if a bubble grows there is a leak.

WA R N I N G: Do not ignite bu r n e rs while ch e cking for leaks.

Check:
a) Left valves to manifold connection. Figure 25 (a).
b) Right valves to manifold connection. Figure 25 (b).
c) Gas line to manifold connection. Figure 25 (c)

WARNING: If there is a leak at connection 25 (c) turn
OFF the gas and retighten the fitting with a wrench
and recheck for leaks with soap and water solution.

If a leak persists after retightening the fitting, turn
OFF the gas. DO NOT OPERATETHE BARBECUE.
Contact your dealer.

a) Hose to regulator connection. Figure 26 (a).
b) Regulator to tank connection. Figure 26 (b).

WARNING: If there is a leak at connections
25 (a), 25 (b), 26 (a), or 26 (b) turn OFF the gas.
Do not operate the barbecue. Contact your dealer.

When leak checks are complete, turn gas supply OFF at
the source and rinse connections with water.

a)

b)

Manifold

b)

a)

Figure 26

c)

Manifold

Figure 25

13

REINSTALL CONTROL PANEL

REINSTALL FRONT PANEL

You will need: front panel.
With the Weber logo to the left, slide front panel down

into place. Figure 27.

Figure 27

You will need: control panel.
Pull igniter buttons up until they stay in the up position.

Place the control panel into the grooves on either side of
the front of the cooking box. Push the control panel into
place, using even pressure while pushing. Figure 28 (a).

Use your fingers to lift the front edge of the control panel
slightly and set it into the recess on both sides of the
cooking box. Figure 28.

(a)

Front Panel

Control Panel

Figure 28

14

REINSTALL BURNER CONTROL KNOBS

INSTALL TOOL HOLDERS

You will need: four burner control knobs.
Push on the burner control knobs. Figure 29.

You will need: four tool holders.
Place the tool holder under the control panel and over the

front panel. Figure 30 (a). Set the tool holder on top of the
front panel and slide to the left.

Figure 29

Figure 30

Control panel

Front panel

a)

REFER TO OPERATING
GUIDE BEFORE LIGHTING
BARBECUE

15