BKI COB-G User Manual

INSTALLATION AND OPERATING INSTRUCTIONS

FULL SIZE

GAS CONVECTION OVENS

Models: COB-G & COM-G

INTENDED FOR OTHER THAN HOUSEHOLD USE. RETAIN THIS MANUAL FOR FUTURE

REFERENCE. OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES.

IMPORTANT INSTRUCTIONS: After the gas supply has been connected to your unit, it is

extremely important to check piping for possible leaks. To do this, use soap and water solution
or solutions that are expressly made for this purpose. DO NOT USE matches, candles,

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flames, or other sources of ignition since these methods
Instructions to be followed in the event you smell gas should be posted in a prominent
location. Obtain these instructions from your local gas supplier.

FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.

WARNING: Improper installation, adjustment, alteration, service or maintenance
can cause property damage, injury or death. Read the Installation, Operating and
Maintenance Instructions thoroughly before installing or servicing this equipment.

are extremely dangerous.

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WARNING: Initial heating of oven may generate smoke or fumes and must be done

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This equipment has been engineered to provide you with year round dependable service when used
according to the instructions in this manual and standard commercial kitchen practices.

Phone: [phone]
Fax: [phone]
Toll Free: [phone]
Website: www.bkideas.com
E-mail: [e-mail]

in a well-ventilated area. Overexposure to smoke or fumes may cause nausea or
dizziness.

Form # 8898550 8/07

BKI Worldwide Headquarters

PO Box 80400

Simpsonville, SC 29680-0400 USA

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INDEX

I. INSTALLATION INSTRUCTIONS
Section Item Page

A Receiving 2
B Set Up / Mounting 2
C Installation with Casters
D Location & Minimum Clearances 4
E Gas Connections 4
F Electrical Connection 5
G Flue Connection Ventilation 5
H Burner Operation 5
I System Check
J Programming Menus 6

II. OPERATING INSTRUCTIONS

A General Instructions 6
B Operation Sequence Rotary Control 6

Cook only

Rotary Control 5

Rotary Control 6

(Optional) 3

I. INSTALLATION INSTRUCTIONS

A. RECEIVING

Section Item Page

Timed Cooking
Cook and Hold
Optional Steam Injection

To Cool Down the Oven Quickly 7
C Cleaning 7
D Servicing 8

Stacking Instructions 9

Leg Assembly Instructions 10

Wiring Diagrams 11

Parts List & Exploded View 13

Warranty 16

Rotary Control 6

Rotary Control 7

Rotary Control 7

Read the notice on the outside carton regarding damage in transit. Damage discovered after opening the
carton is “CONCEALED DAMAGE.” Carrier must be notified immediately to send an inspector and to
furnish forms for claims against the carrier.

When the oven arrives, it should consist of:

! A crate or carton containing your new oven (two for a stacked unit).
! A carton containing four 31” legs with mounting hardware (set of four 6” legs is supplied for stacked

installations).

! A carton containing a Flue Adapter and a Draft Hood. Optional: for Direct Venting (Not available for

European Community Countries).

B. SET UP / MOUNTING:

NOTE:

This appliance must be installed by competent personnel in accordance with the rules in force.

In the U.K., Corgi registered installers (including the regions of British Gas) undertake
satisfactory standards. This appliance must be installed in accordance with the current Gas Safety
(Installation and Use) Regulations and the relevant Building Regulations/IEE Regulations. Detailed
recommendations are contained in the British Standard Codes of Practice B.S. 6172, B.S. 5440: Part 2 and
B.S. 6891.

In MASSACHUSETTS: All gas products must be installed by a “Massachusetts” licensed plumber or gas
fitter. Ventilation hoods
described in that standard.

must be installed in accordance with NFPA-96, current edition, with interlocks as

to work to safe and

Your oven
handling. Unpack carefully, avoiding damage to the Stainless Steel front and/or trim. If concealed damage
is found, follow the instructions detailed in Section A (Receiving). Keep the area around the ovens free and
clear of combustible materials. Do not store any materials on top of or under any oven. The provision for
adequate air supply to your oven for ventilation and proper gas combustion is essential. As a minimum,
observe the clearances detailed in Section D (Location). Provide adequate ventilation and
accordance with local codes. Servicing your oven is done through the front control panel and right side
access cover. Ensure that these areas are kept unobstructed for easy access.

will be packed sitting on its bottom. The skid may be left under the oven for convenience in further

make up air in

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For a single unit: Refer to Figure 4

(1) Tilt Oven over to left-hand side and attach two 31” legs on the right-hand side with three ½” bolts

and washers. Tighten firmly.

(2) Using proper lifting equipment, lift up the left-hand side and attach two 31” legs on the left-hand

side

the same way.

For a stack of two ovens: Refer to Figure 3

(1) Remove flue from bottom oven prior to stacking. When top oven is properly positioned on

bottom oven, re-install the flue back on the bottom oven.

(2) Tilt lower unit over to the left-hand side and position two 6” legs on the right side (one for front

and one for back), secure

in place by using 4 bolts (3/8”-16) per leg. Tighten firmly.

(3) Using proper lifting equipment, lift up the left side of the unit and attach the other two legs in the

same way.

(4) Using the lifting equipment, raise the top oven to proper height and slide on top of the bottom

oven. Line up sides and front and fasten to each other at the rear of the units by using a mounting
bracket supplied in the stacking kit.

To assemble an open rack stand: Refer to Figure 1

(1) Loosen 12 bolts (attaching 31” legs) slightly.
(2) Remove 4 inner bolts, 1 from each

of the 4 legs, place top right angle and top left angle

underneath and tighten these 4 bolts.
(3) Insert “Open Rack Shelf” and tighten into place with eight 3/8-16 screws, washers and nuts.
(4) Position “Rack Supports” and tighten in place using 4 each of flat washers and 5/16-18 Hex Nuts.

Fit the Standard Flue Diverter supplied into the hole in the top of the oven for under ventilation hood
installation and secure with screws. For direct venting, Flue Adapter and Draft Hood must be placed into the
hole on top of the oven.

C. INSTALLATION WITH CASTERS (OPTIONAL): Refer to Figure

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Four casters (two with wheel brakes) and the mounting hardware are packed and included in the shipment if
ordered. Install casters with wheel brakes on the front of the unit. Installation of the unit should be made with
a connector that complies with the latest edition of the Standard for

Connectors for Movable Gas
Appliances ANSI Z21.69 in the USA (CAN CSA-6.16 in Canada) and a quick-disconnect device that
complies with the latest edition of the standard for quick disconnect devices for use with gas fuel ANSI
Z21.41 in the USA (CSA 6.9 in Canada). Adequate means must be provided

to limit the movement of the
appliance without depending on the connector and any quick disconnect device or its associated piping to
limit appliance movement.

The restraint should be attached to the rear legs of the oven on which casters are mounted. If disconnect of
the restraint is necessary, the restraint

should be immediately reconnected after the appliance has been

returned to its originally installed position.

Figure 1

770504

Lock Nut 1/4-20 (12)

8507600

Washer, Flat 1/4" (12)

8205500

Screw, 1/4-20 X ½ (12)

21816807

Support, Wire Rack (2)

770504

Lock Nut 1/4-20 (12)

21818223

Undershelf, Gas Oven (1)

8205500

Screw, 1/4-20 X ½ (12)

OPEN RACK STAND ASSEMBLY INSTRUCTIONS: COB-G & COM-G

Oven Base

21818222

Support, Lt Open Rack (2)

Open Style Support Leg

Assembly Instructions

1: Place undershelf between

legs & secure with ¼-20
UNC screw, flat washer &
locknut. The holes for
mounting the wire racks
should be toward the front
of the oven.

2: Place open rack supports

between legs and secure
with ¼-20 UNC screw, flat
washer and locknut.

3: Slide open

position using the holes in
the undershelf as a guide.

wire racks into

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D. LOCATION AND MINIMUM CLEARANCES:

Move the oven to its final location keeping the minimum clearance from the back of the oven to the wall. This
clearance is necessary for safe operation and to provide proper air flow to the burner chamber.

MINIMUM CLEARANCES FROM COMBUSTIBLE AND NONCOMBUSTIBLE CONSTRUCTION

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E. GAS CONNECTION:

The ovens should not be installed on the same gas supply line with space heaters, boilers or other gas
equipment with high intermittent demand.

CAUTION: Do not store combustible items or materials on racks.

Under Ventilation Hood Direct Venting
RIGHT WALL 1” 1”
LEFT WALL 1” 3”
REAR WALL 3” 3”

Suitable for installation on combustible floor when installed with legs or casters
provided.

CAUTION: Do not set the oven with its back flat against the wall. It will not operate
properly unless there is at least three inches breathing space behind the oven

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The installation of the oven must conform to the latest local codes or National Fuel Gas Code, ANSI Z223.1,
Natural Gas Installation Code, CAN/CGA-B149.1,

The appliance must be isolated from the gas supply piping system by closing its manual shut-off valve
during any pressure testing of the gas supply piping system at test pressures equal to or less than ½ psig
(3.45kpa). The appliance and its shut-off valve must
during any pressure testing of that system at test pressures in excess of ½ psig (3.45kpa).

Use a pipe joint compound that is resistant to the action of liquefied petroleum gases when making gas
connections. For Propane gas, use at least ½” (13
For Natural gas, use ¾” (19 mm) pipe.
The gas pressure regulator is part of the combination valve and is adjusted to yield a pressure of 3.5” water
column (9 mbar) for Natural Gas. If the oven is ordered for
regulator in the combination valve is preset at the factory to yield a pressure of 10” water column (25 mbar).

NOTE: No external regulator is required.

Gas supply pressure in the European Community countries should be as below.

Gas Type Supply Pressure Gas Type Supply Pressure

G20 20
G25 25 mbar G31 30, 37, or 50 mbar depending on country
G20/25 20/25 mbar

A separate shut-off valve for each oven must be provided. It should be as close as possible to the place
where the gas line goes into the oven. It must be located such that
another oven, two shut-off valves, one for each of the two ovens, must be provided.

mbar G30 30 or 50 mbar depending on country

or the Propane Installation Code, CAN/CGA-B149.2.

be disconnected from the gas supply piping system

mm) pipe or tubing with a 5/8” (16 mm) inside diameter.

use on Propane Gas or Butane, the pressure

it is easily accessible. When stacking with

After the Gas Supply has been connected, it is extremely important to check all the piping for leaks.
Use a soap and water solution or a product expressly made
candles or a flame and so forth to check leaks since these methods are extremely dangerous.

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for this purpose. Do not use matches,

F. ELECTRICAL CONNECTION:

The oven, when installed, must be electrically grounded in accordance with local codes and/or the latest
edition of the National Electrical Code ANSI/NFPA No. 70 in the USA (Canadian Electrical Code CSA
Standard C22.1, Part 1 in Canada).

In Europe, the appliance must be connected by an earthen
installation and, thence, to an independent earth connection in compliance with EN 60335-1 and/or local
codes.

The electric motor, all the related switches, interior lights, and the timer/buzzer are all connected through
the 6-foot (1829 mm) power supply cord located at the rear
into a properly grounded, three-prong receptacle. DO NOT CUT OR REMOVE THE GROUNDING PRONG
FROM THE PLUG.

Normal factory connections are made for 120 volts A.C., 60 hz, Service in USA and Canada or 240 volts
A.C., 50 hz service in European
Electrical characteristics of this unit can be found on the rating plate located on the right side of the unit.

This unit is provided with a permanently lubricated electric motor. A wiring diagram may be found on the
back of the service

G. FLUE CONNECTION VENTILATION:

Installation under ventilation hood (standard):

If the oven is not vented directly and is installed under a ventilation hood, the unit is ready to be installed as
is. Local inspectors and ventilation specialists should be consulted so that
the hood conform to local/municipal codes. In the U.K., follow ventilation requirements as detailed in B.S.

5440.

panel on the right-hand side and in this manual.

community countries. Other voltages can be supplied upon request.

cable to all other units in the complete

of the oven. The supply cord must be plugged

the design and the installation of

Optional direct venting (not available for European community countries):

If direct venting, a flue adapter and a draft hood are required to be installed. They prevent the flue
leaving the oven to be affected by the air pressure changes on the outside of the flue stack extending out of
the building.
outlet. It should always slant slightly upwards. For best results, is should rise straight up. The venting
system shall be in accordance with the National Fuel Gas Code, ANSI Z223.1 /
B149.1, Natural Gas and CSA B149.2, Propane Installation Codes, and local codes.

NOTE: DO NOT PUT A DAMPER IN THE FLUE AND DO NOT CONNECT A BLOWER DIRECTLY TO
THE FLUE.

If the flue runs directly to the free air outside the building, use a wind deflector or a UL listed vent cap at the
end

of the pipe. Termination of the vent must be at least two feet above the highest part of the roof within ten

feet. REF: AGA CATALOG NO. XH0474.

H. BURNER OPERATION:

The oven burner flame should always have a blue appearance. This indicates a good mixture of air and gas.
When using LP gas, the flame will have a blue-yellow appearance. There may be intermittent yellow-orange
flame noticed. This is caused by dust particles burning in the flame.

I. SYSTEM CHECK- ROTARY CONTROL:

(1) Open the oven door.
(2) Turn Selector Switch to “HI.” The indicator light near Selector Switch and oven

(3) Close the door. Oven lights will go off and fan will run. Make sure fan is rotating clockwise looking

(4) Press Oven Light switch. Oven light will go on and will go off when switch is released.

The flue pipe from the draft hood must not run downwards at any point from the oven to the final

NFPA 54 and or the CSA

illuminate.

from front.

gases

light will

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