US Range UTGG24-G24M Service Manual

Service Manual

Garland GT Series

US Range UT Series

Heavy Duty Gas

Counter Equipment

TM

FOR YOUR SAFETY

DO NOT store or use gasoline or other flammable vapors or 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.

IMPORTANT

Please read all sections of this manual and retain for future reference.

This product has been certified as commercial cooking equipment and must be installed by
professional personnel as specified.

Users are cautioned that maintenance and repairs must be performed by a Garland/US Range
Authorized Service Agent using genuine Garland replacement parts. Garland/US Range will have no
obligation with respect to any product that has been improperly installed, adjusted, operated or not
maintained in accordance with national and local codes or installation instructions provided with
the product, or any product that has its serial number defaced, obliterated or removed, or which has
been modified or repaired using unauthorized parts or by unauthorized service agents. For a list of
authorized service agents, please refer to the Garland web site at www.garland-group.com

Garland Commercial Ranges, Ltd.
1177 Kamato Road
Mississauga, Ontario L4W 1X4 Canada
General Inquiries P: 905 624 0260 F: 905 624 5669
www.Garland-Group.com

Parts & Service

1 800 427 6668 (Phone, US & Canada)
1 800 361 7745 (Fax, US & Canada)

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)

Safety Requirements

WARNING

This product contains chemicals known to the state of California to cause cancer and/or birth defects or
other reproductive harm. Installation and servicing of this product could expose you to airborne particles of
glass wool/ceramic fibers. Inhalation of airborne particles of glass wool/ceramic fibers is known to the State
of California to cause cancer. Operatin of this product could expose you to carbon monoxide if not adjusted
properly. Inhalation of carbon monoxide is known to the State of California to cause birth defects or other
reporductive harm.

WARNING

Before working on any appliance, Shut Off the gas supply at the main shut-off valve and electrical supply at the
main power switch. On completion of any service work, test for gas leaks before returning the equipment into
service.

IMPORTANT

Please read and follow all the instructions carefully as the manufacturer cannot be held responsible for any
damage to property, persons caused by incorrect installation or operation of the equipment.

Your equipment must be installed and adjusted by a competent person in accordance with the law. Failure to
install appliances correctly could lead to prosecution. It is in your own interest and that of safety to ensure that
the law is complied with. Refer to Garland/US Range Installation And Operation Manual for further details.

Your Garland/US Range Authorized Service Agent (ASA) is well qualified to provide this service.
Periodic inspections by your Garland/US Range ASA or qualified service company are recommended to check

temperatures, burner adjustments and to ensure that moving parts are operative. Whenever possible avoid
overheating idle equipment as this is the primary cause for increased service cost.

NOTE

This manual is written for the model(s) specified on the front cover. Unless specified, this manual should not be
used for any other make or model of appliance.

Garland reserves the right to change product specifications without notices and accepts no liability for any
inaccuracies, errors or ommissions contained herein.

Keep your working area free and clear.

Remember Safety First.

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)Page 2

Contents

Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Rating Plate, Serial Number Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Model Code Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

General Pilot Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Lighting Standing Pilots - All Models 15
Open Top Burner Models 15
Broilers Models 15
Griddles with Valve Controls 15
Griddles with SIT Thermostats 16
Griddles with GS Thermostats 16
Shutdown Procedure 16
Shutdown Procedure on Griddles with SIT Thermostats 16

Gas Pressure Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Rear Gas Pressure Regulator Connection Options 17
Purpose of gas pressure regulator 17

Open Top Burners Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Pilot Adjustment Valves 18
Burner Gas / Air Shutter Adjustment 18

Troubleshooting — Open Top Burners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Griddle Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Griddle Spark Igniter 20
High Tension Lead (HTL) & Insulation 21
Thermostatic Griddle Adjustments (SIT Control) 22
Thermostatic Griddle Adjustments (GS Control) 26
Griddles with Hi/Low Valves 28

Troubleshooting — Griddles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Broiler Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Pilot Adjustment Valves 30
Gas Burner Control Valves 30
Burner Gas / Air Shutter Adjustment 31

Troubleshooting — Broilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Wiring Diagram (GTGG/UTGG__M Models Electric Spark) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Wiring Diagram (GTGG/UTGG Electric Spark) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Gas Conversion Kits (from Natural to Propane). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Gas Conversion Kits (from Propane to Natural). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Bulletins & Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1) Page 3

Rating Plate, Serial Number Information

Rating Plate

The rating plate is affixed to a bracket mounted at the rear of the unit, and visible from the front. The grease drawer
may need to be removed to view the rating plate.

Serial Number (Year/Month Information)

From June 2004 to Present, the Serial Number is 13 Digits Long.

10 05 1001 00668

Sequential Number

Factory Code

Month

Year

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)Page 4

Model Code Information

Open Top Models:

• GTOG__-_ / UTOG__-_ Open Top Model

• GTOG__-SU_ / UTOG__-SU_ Open Top Step-Up Model

GT/UT O G 36 - 6

Number of Burners, or
SU (Step-Up) + Number of Burners
Nominal Width of Equipment
Fuel Type: Gas (Propane or Natural), Electric

Open Burner
Garland/US Range Heavy Duty Counter Top Model

Griddle Models:

• GTGG__-G__ / UTGG__-G__ Valve-Controlled Griddle Model (out-of-production)

• GTGG__-G__M / UTGG__-G__M Valve-Controlled Griddle Model with Suffix M

• GTGG__-GT__ / UTGG__-GT__ Thermostat-Controlled Griddle Model (out-of-production)

• GTGG__-GT__M / UTGG__-GT__M Thermostat-Controlled Griddle Model with Suffix M

GT/UT G G 48 - G 48 M

Models with Suffix M
Model Size

Griddle with Hi-Low Valve Control, or
GT - Thermostatic Griddle

Nominal Width of Equipment
Fuel Type: Gas (Propane or Natural), Electric

Griddle
Garland/US Range Heavy Duty Counter Top Model

Broiler Models:

• GTBG__-NR__ / UTBG__-NR__ Non-Adjustable (Fixed) Radiant Broiler Model

• GTBG__-AR__ / UTBG__-AR__ Adjustable Radiant Broiler Model

• GTBG__-AB__ / UTBG__-AB__ Adjustable Charcoal Broiler Model

GT/UT B G 48 - AR 48

Model Size

NR - Non-Adjustable (Fixed) Radiant
AR - Adjustable Radiant
AB - Adjustable Charcoal Broiler

Nominal Width of Equipment
Fuel Type: Gas (Propane or Natural), Electric

Broiler
Garland/US Range Heavy Duty Counter Top Model

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1) Page 5

Technical Data

Model Information

Garland Models US Range Models Model Information

GTOG12-2 UTOG12-2 Gas, Two Open Burners, 12” Wide

GTOG24-4 UTOG24-4 Gas, Four Open Burners, 24” Wide

GTOG36-6 UTOG36-6 Gas, Six Open Burners, 36” Wide

GTOG48-8 UTOG48-8 Gas, Eight Open Burners, 48” Wide

Line Ratings

Garland US Range Natural Gas @ 4.5”WC

Manifold Pressure

Models Models BTU/h Injectors BTU/h Injectors

GTOG12-2 UTOG12-2 60,000 #36 52,000 #53

GTOG24-4 UTOG24-4 120,000 #36 104,000 #53

Open Top Burner Models

For use with Natural or Propane gas only.
Gas input ratings shown for installation up to 2000 ft (610m) above sea level.

Supply Operating Pressure

GTOG36-6 UTOG36-6 180,000 #36 156,000 #53

GTOG48-8 UTOG48-8 240,000 #36 208,000 #53

Natural Gas Propane Gas

“WC MBar “WC MBar

7 17.5 11 27.5

L. Propane Gas @ 10”WC

Manifold Pressure

GTOG24-4 Shown

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)Page 6

Technical Data

Model Information

Garland Models US Range Models Model Information

GTOG24-SU4 UTOG24-SU4 Gas, Four Open Burners Step Up, 24” Wide

GTOG36-SU6 UTOG36-SU6 Gas, Six Open Burners Step Up, 36” Wide

GTOG48-SU8 UTOG48-SU8 Gas, Eight Open Burners Step Up, 48” Wide

Line Ratings

Open Top Burner Step-Up Models

Garland US Range Natural Gas @ 4.5”WC

Manifold Pressure

Models Models BTU/h Injectors BTU/h Injectors

GTOG24-SU4 UTOG24-SU4 120,000 #36 108,000 #1.6mm

GTOG36-SU6 UTOG36-SU6 180,000 #36 162,000 #1.6mm

GTOG48-SU8 UTOG48-SU8 240,000 #36 216,000 #1.6mm

For use with Natural or Propane gas only.
Gas input ratings shown for installation up to 2000 ft (610m) above sea level.

Supply Operating Pressure

Natural Gas Propane Gas

“WC MBar “WC MBar

7 17.5 11 27.5

L. Propane Gas @ 10”WC

Manifold Pressure

GTOG24-SU4 Shown

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1) Page 7

Technical Data

Model Information

Garland Models US Range Models Model Information

GTGG24-G24 UTGG24-G24 Gas, Valve Controlled Griddle, 24” Wide

GTGG36-G36 UTGG36-G36 Gas, Valve Controlled Griddle, 36” Wide

GTGG48-G48 UTGG48-G48 Gas, Valve Controlled Griddle, 48” Wide

GTGG60-G60 UTGG60-G60 Gas, Valve Controlled Griddle, 60” Wide

GTGG72-G72 UTGG72-G72 Gas, Valve Controlled Griddle, 72” Wide

Line Ratings

Garland US Range Natural Gas @ 4.5”WC

Manifold Pressure

Models Models BTU/h Injectors BTU/h Injectors

GTGG24-G24 UTGG24-G24 52,000 #37 52,000 #53

GTGG36-G36 UTGG36-G36 78,000 #37 78,000 #53

GTGG48-G48 UTGG48-G48 104,000 #37 104,000 #53

GTGG60-G60 UTGG60-G60 130,000 #37 130,000 #53

GTGG72-G72 UTGG72-G72 156,000 #37 156,000 #53

Valve Controlled Griddle Models

For use with Natural or Propane gas only.
Gas input ratings shown for installation up to 2000 ft (610m) above sea level.

Supply Operating Pressure

Natural Gas Propane Gas

“WC MBar “WC MBar

7 17.5 11 27.5

L. Propane Gas @ 10”WC

Manifold Pressure

GTGG36-G36 Shown

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)Page 8

Technical Data

Model Information

Garland Models US Range Models Model Information

GTGG24-G24M UTGG24-G24M Gas, Valve Controlled Griddle, 24” Wide

GTGG36-G36M UTGG36-G36M Gas, Valve Controlled Griddle, 36” Wide

GTGG48-G48M UTGG48-G48M Gas, Valve Controlled Griddle, 48” Wide

GTGG60-G60M UTGG60-G60M Gas, Valve Controlled Griddle, 60” Wide

GTGG72-G72M UTGG72-G72M Gas, Valve Controlled Griddle, 72” Wide

Line Ratings

Garland US Range Natural Gas @ 4.5”WC

Manifold Pressure

Models Models BTU/h Injectors BTU/h Injectors

GTGG24-G24M UTGG24-G24M 54,000 #35 54,000 #52

GTGG36-G36M UTGG36-G36M 81,000 #35 81,000 #52

GTGG48-G48M UTGG48-G48M 108,000 #35 108,000 #52

GTGG60-G60M UTGG60-G60M 135,000 #35 135,000 #52

GTGG72-G72M UTGG72-G72M 162,000 #35 162,000 #52

For use with Natural or Propane gas only.
Gas input ratings shown for installation up to 2000 ft (610m) above sea level.

L. Propane Gas @ 10”WC

Manifold Pressure

Valve Controlled Griddle Models (with Suffix M)

Supply Operating Pressure

Natural Gas Propane Gas

“WC MBar “WC MBar

7 17.5 11 27.5

GTGG36-G36M Shown

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1) Page 9

Technical Data

Model Information

Garland Models US Range Models Model Information

GTGG24-GT24 UTGG24-GT24 Gas, Thermostatically Controlled Griddle, 24” Wide

GTGG36-GT36 UTGG36-GT36 Gas, Thermostatically Controlled Griddle, 36” Wide

GTGG48-GT48 UTGG48-GT48 Gas, Thermostatically Controlled Griddle, 48” Wide

GTGG60-GT60 UTGG60-GT60 Gas, Thermostatically Controlled Griddle, 60” Wide

GTGG72-GT72 UTGG72-GT72 Gas, Thermostatically Controlled Griddle, 72” Wide

Line Ratings

Garland US Range Natural Gas @ 4.5”WC

Manifold Pressure

Models Models BTU/h Injectors# BTU/h Injectors#

GTGG24-GT24 UTGG24-GT24 64,000 #36 64,000 #51

GTGG36-GT36 UTGG36-GT36 96,000 #36 96,000 #51

GTGG48-GT48 UTGG48-GT48 128,000 #36 128,000 #51

GTGG60-GT60 UTGG60-GT60 160,000 #36 160,000 #51

GTGG72-GT72 UTGG72-GT72 192,000 #36 192,000 #51

For use with Natural or Propane gas only.
Gas input ratings shown for installation up to 2000 ft (610m) above sea level.

Supply Operating Pressure

Thermostat Controlled Griddle Models

Natural Gas Propane Gas

“WC MBar “WC MBar

7 17.5 11 27.5

L. Propane Gas @ 10”WC

Manifold Pressure

GTGG36-GT36 Shown

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)Page 10

Technical Data

Model Information

Garland Models US Range Models Model Information

GTGG24-GT24M UTGG24-GT24M Gas, Thermostatically Controlled Griddle, 24” Wide

GTGG36-GT36M UTGG36-GT36M Gas, Thermostatically Controlled Griddle, 36” Wide

GTGG48-GT48M UTGG48-GT48M Gas, Thermostatically Controlled Griddle, 48” Wide

GTGG60-GT60M UTGG60-GT60M Gas, Thermostatically Controlled Griddle, 60” Wide

GTGG72-GT72M UTGG72-GT72M Gas, Thermostatically Controlled Griddle, 72” Wide

Line Ratings

Garland US Range Natural Gas @ 4.5”WC

Manifold Pressure

Models Models BTU/h Injectors# BTU/h Injectors#

GTGG24-GT24M UTGG24-GT24M 56,000 #33 56,000 #52

GTGG36-GT36M UTGG36-GT36M 84,000 #33 84,000 #52

GTGG48-GT48M UTGG48-GT48M 112,000 #33 112,000 #52

GTGG60-GT60M UTGG60-GT60M 140,000 #33 140,000 #52

GTGG72-GT72M UTGG72-GT72M 168,000 #33 168,000 #52

For use with Natural or Propane gas only.
Gas input ratings shown for installation up to 2000 ft (610m) above sea level.

L. Propane Gas @

10”WC Manifold

Thermostat Controlled Griddle Models (with Suffix M)

Pressure

Supply Operating Pressure

Natural Gas Propane Gas

“WC MBar “WC MBar

7 17.5 11 27.5

GTGG36-GT36M Shown

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1) Page 11

Technical Data

Model Information

Garland Models US Range Models Model Information

GTBG24-NR24 UTBG24-NR24

GTBG36-NR36 UTBG36-NR36

GTBG48-NR48 UTBG48-NR48

GTBG60-NR60 UTBG60-NR60

Line Ratings

Gas Broiler, Non-Adjustable Grates and Cast Iron
Radiant

Gas Broiler, Non-Adjustable Grates and Cast Iron
Radiant

Gas Broiler, Non-Adjustable Grates and Cast Iron
Radiant

Gas Broiler, Non-Adjustable Grates and Cast Iron
Radiant

Garland US Range Natural Gas @ 4.5”WC

Manifold Pressure

Models Models BTU/h Injectors# BTU/h Injectors#

GTBG24-NR24 UTBG24-NR24 72,000 #45 72,000 #1.3mm

GTBG36-NR36 UTBG36-NR36 108,000 #45 108,000 #1.3mm

GTBG48-NR48 UTBG48-NR48 144,000 #45 144,000 #1.3mm

GTBG60-NR60 UTBG60-NR60 180,000 #45 180,000 #1.3mm

For use with Natural or Propane gas only.
Gas input ratings shown for installation up to 2000 ft (610m) above sea level.

Broiler Non-adjustable Grates Models

Supply Operating Pressure

Natural Gas Propane Gas

“WC MBar “WC MBar

7 17.5 11 27.5

L. Propane Gas @ 10”WC

Manifold Pressure

GTBG24-NR24 Shown

A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)Page 12