Groen TDHC 20A, TDHC 20C, TDH 24A, TDHC 24C, TDHC 24A Operator's Manual

OPERATOR MANUAL

IMPORTANT INFORMATION, KEEP FOR OPERATOR

This manual provides information for:

MODELS TDH(C)-20 (C,A),

TDH(C)-24 (C,A), TDH(C)-40 (C,A),
TDH(C)-48 (C,A) Domestic

STEAM JACKETED KETTLE

· Self Contained

· Table Top Mounted

· Gas Heated

· Crank-Tilting

THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE. READ, UNDERSTAND
AND FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED IN THIS MANUAL.

FOR YOUR SAFETY

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

POST IN A PROMINENT LOCATION

Instructions to be followed in the event user smells
gas. This information shall be obtained by consulting
your local gas supplier. As a minimum, turn o the gas
and call your gas company and your authorized service
agent. Evacuate all personnel from the area.

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.

NOTIFY CARRIER OF DAMAGE AT ONCE

It is the responsibility of the consignee to inspect the container upon receipt of same and to
determine the possibility of any damage, including concealed damage. Unified Brands suggests
that if you are suspicious of damage to make a notation on the delivery receipt. It will be the re­sponsibility of the consignee to file a claim with the carrier. We recommend that you do so at once.

Manufacture Service/Questions 888-994-7636.

Information contained in this document is known to be current and accurate at the time
of printing/creation. Unified Brands recommends referencing our product line websites,
unifiedbrands.net, for the most updated product information and specifications.

PART NUMBER 174844, REV. C (07/17)

1055 Mendell Davis Drive

Jackson, MS 39272

888-994-7636, fax [phone]

unifiedbrands.net

IMPORTANT - READ FIRST - IMPORTANT

WARNING: FAILURE TO DISCONNECT POWER BEFORE SERVICING COULD RESULT IN ELECTROCUTION AND DEATH.

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.

WARNING: THE UNIT MUST BE INSTALLED BY PERSONNEL QUALIFIED TO WORK WITH GAS, ELECTRICITY AND PLUMBING. UNIT MUST

BE INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CODES.

WARNING: DO NOT ATTACH THE UNIT TO A TYPE “B” VENT. IT COULD CAUSE FIRE OR PROPERTY DAMAGE.

WARNING: DO NOT CONNECT ANY PIPING TO THE PRESSURE RELIEF VALVE. IT MUST BE FREE TO VENT STEAM AS NEEDED. TO AVOID

BURNS FROM THE VENTED STEAM THE VALVE DISCHARGE SHOULD POINT DOWNWARD.

DANGER: ELECTRICALLY GROUND THE UNIT AT THE TERMINAL PROVIDED. FAILURE TO GROUND THE UNIT COULD RESULT IN

ELECTROCUTION AND DEATH.

CAUTION: BE SURE ALL OPERATORS READ, UNDERSTAND AND FOLLOW THE OPERATING INSTRUCTIONS, CAUTIONS AND SAFETY

INSTRUCTIONS CONTAINED IN THIS MANUAL.

CAUTION: DO NOT OVERFILL THE KETTLE WHEN COOKING, HOLDING OR CLEANING. KEEP LIQUIDS A MINIMUM OF 2-3” (5-8 CM)

BELOW THE KETTLE BODY RIM TO ALLOW CLEARANCE FOR STIRRING, BOILING AND SAFE TRANSFER OF PRODUCT.

CAUTION: KEEP FLOORS IN FRONT OF KETTLE WORK AREA CLEAN AND DRY. IF SPILLS OCCUR, CLEAN IMMEDIATELY TO AVOID SLIPS

OR FALLS.

WARNING: KEEP WATER AND SOLUTIONS OUT OF CONTROLS AND BURNERS. NEVER USE A HIGH PRESSURE HOSE TO CLEAN KETTLE

SURFACES.

CAUTION: MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS MEMBRANES AND CLOTHING. TAKE PRECAUTIONS: WEAR

RUBBER GLOVES, GOGGLES OR FACE SHIELD AND PROTECTIVE CLOTHING. CAREFULLY READ WARNINGS AND FOLLOW
DIRECTIONS ON CLEANER LABELS .

WARNING: DO NOT STAND ON OR APPLY UNNECESSARY WEIGHT OR PRESSURE ON THE KETTLE FRONT OR POURING LIP. THIS COULD

RESULT IN THE OVERLOAD AND FAILURE OF THE TILT MECHANISM, AND POSSIBLE SERIOUS INJURY AND BURNS TO THE
OPERATOR AND OTHERS.

NOTICE: NEVER LEAVE A SANITIZER IN CONTACT WITH STAINLESS STEEL SURFACES LONGER THAN 30 MINUTES. LONGER

CONTACT CAN CAUSE CORROSION.

WARNING: FAILURE TO PERIODICALLY CHECK PRESSURE RELIEF VALVE OPERATION COULD RESULT IN PERSONAL INJURY AND/OR

DAMAGE TO EQUIPMENT.

WARNING: WHEN TESTING, AVOID EXPOSURE TO THE STEAM BLOWING OUT OF THE PRESSURE RELIEF VALVE. DIRECT CONTACT

COULD RESULT IN SEVERE BURNS.

WARNING: TO AVOID INJURY, READ AND FOLLOW ALL PRECAUTIONS STATED ON THE LABEL OF THE WATER TREATMENT COMPOUND.

WARNING: BEFORE REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER SUPPLY AND CLOSE THE MAIN GAS

VALVE. ALLOW FIVE MINUTES FOR GAS TO VENT.

2 OM-TDH/TDHC

IMPORTANT - READ FIRST - IMPORTANT

CAUTION: USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY THE MANUFACTURER OR AUTHORIZED

DISTRIBUTORS CAN CAUSE INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL
WARRANTIES.

WARNING: KEEP AREA AROUND KETTLE FREE AND CLEAR OF ALL COMBUSTIBLE MATERIALS. FAILURE TO DO SO COULD RESULT IN

FIRE OR PROPERTY DAMAGE.

CAUTION: HEATING AN EMPTY KETTLE MAY CAUSE THE RELEASE OF STEAM FROM THE PRESSURE RELIEF VALVE.

IMPORTANT: SERVICE PERFORMED BY OTHER THAN FACTORY AUTHORIZED PERSONNEL WILL VOID ALL WARRANTIES.

OM-TDH/TDHC 3

Table of Contents

Important Operator Warnings .....................................................page 2-3

References..................................................................................... page 4

Equipment Description.................................................................. page 5

Inspection and Unpacking ............................................................ page 6

Installation .................................................................................. page 7-8

Initial Start-Up ................................................................................ page 9

Operation ................................................................................ page 10-13

Sequence of Operation ................................................................ page 13

Cleaning.................................................................................. page 14-15

Maintenance........................................................................... page 16-17

Troubleshooting...................................................................... page 18-19

Parts Lists............................................................................... page 20-30

Wiring Diagram ........................................................................ page 31-32

Service Log ................................................................................. page 33

References

CSA INTERNATIONAL
8501 East Pleasant Valley Road
Cleveland, Ohio 44131

NSF INTERNATIONAL
798 N. Dixboro Rd.
P.O. Box 130140
Ann Arbor, Michigan 48113-0140

UNDERWRITERS LABORATORIES, INC.
333 Pfingsten Road
Northbrook, Illinois 60062

KLENZADE SALES CENTER ECOLAB, Inc.
370 Wabasha
St. Paul, Minnesota 55102

NATIONAL FIRE PROTECTION ASSOCIATION
60 Battery March Park
Quincy, Massachusetts 02269

NFPA/54 -Installation Gas Appliances & Piping
NFPA/70 - The National Electric Code

4 OM-TDH/TDHC

ZEP MANUFACTURING COMPANY
1310-T Seaboard Industrial Boulevard
Atlanta, Georgia 30318

Equipment Description

FIRING RATE, BTU/hr

TDH-20, TDHC-20
TDH-24, TDHC-24

31,000 52,000

TDH-40, TDHC-40
TDH-48, TDHC-48

Model

TDH and TDHC models are stainless steel, steam-jacketed, table top mounted kettles
with a self-contained, gas heated steam source. The TDHC has a crank tilt hand wheel,
and the TDH has a handle that allows the operator to manually tilt the kettle. The kettle
body is welded into one solid piece and furnished with a reinforced rim and welded­in “butterfly” shaped pouring lip. The interior of the kettle is polished to a 180 emery
grit finish, and the exterior is given a bright high buff finish. The unit is A.S.M.E. shop
inspected and registered with the National Board for a design pressure of 50 PSIG.

The self-contained steam source is heated by propane or natural gas and is
equipped with electronic ignition. Charged at the factory with chemically pure water
containing rust inhibitors, the steam source provides kettle temperatures of 150ºF to
approximately 295ºF.

Controls for the TDHC unit include a crank tilt handwheel, thermostat, pressure gauge,
pressure relief valve, low water cut-off, On/Off switch, indicator lamp, gas regulator
valve, and water level sight glass. Controls for the TDH are the same as the above,
with the exception of the crank tilt hand wheel.

The gas supply shuts off automatically when the kettle is tilted.

The unit must be specified for use with natural gas or propane. For other gas types,
consult factory. Service connections are required for gas and 115V electricity.

Kettle

Capacity

Jacket

Capacity

Kettle Body

Diameter

Kettle Body

Depth

Base

Width

Base Depth

TDH-20 (C,A)
TDHC-20 (C,A)

TDH-24 (C,A)
TDHC-24 (C,A)

TDH-40 (C,A)
TDHC-40 (C,A)

TDH-48 (C,A)
TDHC-48 (C,A)

5 Gal. (20 Qt.)

19 liter

6-Gal. (24 Qt.)

23 liter

10 Gal. (40

Qt.)

38 liter

12 Gal. (48

Qt.)

45 liter

6 Qt

5.7 liter

6 Qt

5.7 liter

12 Qt

11.4 liter

12 Qt

11.4 liter

14 inches

356 mm

14 inches

356 mm

16-1/2
inches

419 mm

16-1/2
inches

419 mm

11 inches

279 mm

12-1/2 inches

318 mm

14-1/2 inches

368 mm

16 inches

406 mm

28 inches

711 mm

28 inches

711 mm

28 inches

711 mm

28 inches

711 mm

Options available include:

1. One-piece, Lift-off cover

2. Holder for Lift-off Cover

3. Basket insert

4. Rice Strainer

5. Stand that supports the unit and holds a pan in position for filling

6. Water fill swing faucet

7. 316 stainless steel interior (must be indicated on initial order)

24 inches

610 mm

24 inches

610 mm

26-3/4 inches

680 mm

26-3/4 inches

680 mm

OM-TDH/TDHC 5

Inspection & Unpacking

CAUTION

SHIPPING STRAPS ARE UNDER TENSION

AND CAN SNAP BACK WHEN CUT. TAKE

CARE TO AVOID PERSONAL INJURY OR

DAMAGE TO THE UNIT BY STAPLES LEFT

IN THE WALLS OF THE CARTON.

CAUTION

THIS UNIT WEIGHS BETWEEN 214 AND

240 POUNDS (98 TO 109 Kg) DEPENDING

ON SIZE. INSTALLER SHOULD USE

PROPER EQUIPMENT TO LIFT SAFELY.

The unit arrives completely assembled, except for the tilting handle on hand tilt models
which is shipped inside the kettle. The unit is strapped on a skid and in a heavy carton.
Inspect the carton carefully for damage. Open the container and check the unit for
hidden damage. Report shipping damage or shipment errors to the delivery agent.

Write down the model number, serial number, and installation date for your unit at the
top of the Service Log at the end of this manual. Keep this manual with the unit.

To remove the kettle from the box, cut any straps from around the box. Detach the box
sides from the skid. Pull the box up off the unit, taking care to avoid damage or injury
from any staples left in the box walls. When installation is to begin, cut the straps holding
the kettle on the skid, and lift the kettle straight up off the skid. Examine the packing
materials to make sure no loose parts are discarded with the materials. On hand tilt
models, the tilting handle may be screwed into its socket. Attach handle to the kettle on
left side or right side as shown below.

6 OM-TDH/TDHC

Installation

WARNING

THE KETTLE MUST BE INSTALLED BY

PERSONNEL QUALIFIED TO WORK WITH

GAS, ELECTRICITY AND PLUMBING.

IMPROPER INSTALLATION CAN CAUSE

INJURY TO PERSONNEL AND/OR DAMAGE

TO THE EQUIPMENT.

WARNING

THIS UNIT IS FOR COMMERCIAL USE. DO NOT

USE HOME OR RESIDENTIAL GRADE GAS

CONNECTIONS. THEY DO NOT MEET GAS

CODES AND COULD BE HAZARDOUS.

The kettle should be installed in a ventilated room for efficient performance. Items which
might obstruct or restrict the flow of air for combustion and ventilation must be removed.
The area directly around the appliance must be cleared of any combustible material.

1. Installation on combustible floors is allowed. Minimum clearances between the
unit and combustible surfaces is as follows:

Model

Left Side

Right Side

Rear

Minimum Clearance from

Combustible walls

1 in. 1 in.

0 in. 12-16 in. for servicing

1 in. 3 in. for faucet bracket

Recommended

Clearances

2. We recommends installation of the unit under a vent hood. The base must be
fastened to a working surface or stand.

3. Complete the piping to the gas service main using ½ inch IPS pipe or an
approved equivalent.

4. Provide 115 VAC, 60 cycle, 1 phase, 1 AMP electric service. Local codes and/
or The National Electrical Code should be observed in accordance with ANSI/
NFPA-70 latest edition. AN ELECTRICAL GROUND IS REQUIRED. The electrical
schematic is located on the inside of the service panel and in this manual.

5. Electrical connection to the unit must be water resistant sealtite conduit type or
equal and utilize the water resistant conduit fitting provided on the unit.

6. The installation must conform with local codes or the American National
Standards Z223.1 - latest edition National Fuel Gas Code. The kettle should be
installed in an adequately ventilated room with provision for adequate air supply.
The best ventilation will employ a vent hood and exhaust fan with no direct
connection between the vent duct and the kettle flue. DO NOT obstruct the flue
or vent duct after installation.

7. PRESSURE TEST WARNING
a) Test pressure exceeding ½ PSIG (3.45 kPa). During pressure testing of the

gas supply piping system at pressures exceeding ½ PSIG, the appliance
and its individual shutoff valve must be disconnected from the gas supply
piping system.

b) Test pressure equal to or less than ½ PSIG (3.45 kPa). During pressure

testing of the gas supply piping system at pressures equal to or less than
½ PSIG, the kettle must be isolated from the gas supply piping system by
closing its individual manual shutoff valve.

OM-TDH/TDHC 7

Installation

8. Adequate space for proper servicing and operation is required. DO NOT block
any air intake spacings to the combustion chamber or obstruct air flow.

9. After the kettle has been connected to the gas supply, check all gas joints for
leaks. A soap solution or other suitable gas leak detector should be used. Do not
use flame when checking for leaks.

10. Once the unit is anchored to a mounting surface, apply a small bead of silicone
caulk around the perimeter of the kettle base and seal the joint.

11. Make sure the water level is correct in the jacket, by confirming that the
level is near the middle of the sight glass. If the water level is low, follow the
instructions in Jacket Filling and Water Treatment in the Maintenance section of
this manual.

12. Check to be sure that the open end of the elbow on the outlet of the pressure
relief valve is directed downward. Be sure to read and follow the instructions on
the attached pressure relief valve tag.

8 OM-TDH/TDHC

Initial Start-Up

IMPORTANT

BE SURE ALL OPERATORS READ,

UNDERSTAND AND FOLLOW THE OPERATING

INSTRUCTIONS, CAUTIONS, AND SAFETY

INSTRUCTIONS CONTAINED IN THIS MANUAL.

WARNING

DO NOT STAND ON OR APPLY UNNECESSARY

WEIGHT OR PRESSURE ON THE KETTLE FRONT

OR POURING LIP. THIS COULD RESULT IN

THE OVERLOAD AND FAILURE OF THE TILT

MECHANISM, AND POSSIBLE SERIOUS INJURY

AND BURNS TO THE OPERATOR AND OTHERS.

Make sure that the open end of the elbow on

the pressure relief valve is directed downward.

After the kettle has been installed, the installer should test to ensure that it is
operating correctly.

1. Remove literature and packing materials from inside and outside of the unit.

2. Add water to the kettle to a depth of at least one inch.

3. Make sure the supplies of gas and electric power are on.

4. Follow the “To Start Kettle Heating” instructions in the Operation section of this
manual. Begin heating the water at the highest thermostat setting. The indicator
light should come on and heating should continue until the water boils.

5. To turn off the unit, follow “To Stop Kettle Heating” in the Operation Section of
this manual.

If the kettle functions as described, it is ready for use. If the unit does not operate as
designed, contact an authorized Service Agent.

Correct water level

OM-TDH/TDHC 9

Operation

CAUTION
ANY POTENTIAL USER OF THE EQUIPMENT
MUST BE TRAINED IN SAFE AND CORRECT

OPERATING PROCEDURES.

WARNING

KEEP AREA AROUND KETTLE FREE AND

CLEAR OF ALL COMBUSTIBLE MATERIALS.

DO NOT ATTEMPT TO LIGHT ANY BURNER

WITH A FLAME.

CAUTION

HEATING AN EMPTY KETTLE MAY CAUSE

THE RELEASE OF STEAM FROM THE

PRESSURE RELIEF VALVE.

Classic Control

Advanced Control

A. Controls

1. The “Classic” Controls for the kettle are:
a. The manual gas shut-off valve supplies inlet gas to the unit.
b. Lighted Power ON switch located on the control console. Controls

main power to the unit.

c. The temperature knob, located on the control console, is used to

set the kettle heat values between 1 and 10.

d. Heating indicator light located on the control console, lights when

the controller sends call to open the main gas valve and will cycle
on and off once the unit reaches set temperature. If the unit is
tilted, the main gas valve will be disabled and the light will turn off
until the unit is returned to the cooking position.

e. A LOW WATER indicator light, located on the control console,

illuminates when the jacket water falls below acceptable levels.
When lit, the main gas valve is disabled and will not function until
the jacket water is refilled using the procedure on p. 17 of this
manual.

f. On Crank tilt (TDHC) units, a handwheel controls the worm and

gear mechanism that smoothly tilts the kettle body and holds it in
the desired position.

2. The “Advanced” Controls for the kettle are:
a. The manual gas shut-off valve supplies inlet gas to the unit.
b. Lighted Power ON switch located on the control console. Controls

main power to the unit.

c. The temperature knob, located on the control console, is used to

set the kettle heat values between 1 and 10. The current setting
will be reflected on the display.

d. Heating indicator light located on the control console, lights when

the controller sends call to open the main gas valve and will cycle
on and off once the unit reaches set temperature. If the unit is
tilted, the main gas valve will be disabled and the light will turn off
until the unit is returned to the cooking position.

e. A LOW WATER indicator light, located on the control console,

illuminates when the jacket water falls below acceptable levels.
When lit, the main gas valve is disabled and will not function until
the jacket water is refilled using the procedure on p. 17 of this
manual.

f. SET TnnP Mode - Allows power to the controller and gas to the

pilot without the kettle heating; the kettle will heat once the LOW
TEMP, MANUAL or HIGH TEMP button is selected.

i. LOW TEMP Button – Used to set operating temperature of the ket-

tle at a preset low intensity (default = 2). Can be pressed at any
time during operation of the unit to change the set temperature to
the preset value except when there is an active TIMER enabled.

g. MANUAL Mode button – Enables the user modify the desired

cooking temperature of the kettle (between 1 and 10) using the
temperature knob and display (default = 4). The operator will
press the MANUAL button and set the desired temperature using
the temperature knob and display. Once the desired intensity
is shown in the display, the user may either press the MANUAL
button again or wait 5 seconds and the set temperature will be
accepted by the controller and locked in. After the set tempera-

10 OM-TDH/TDHC

Operation

WARNING

AVOID ALL DIRECT CONTACT WITH HOT

FOOD OR WATER IN THE KETTLE. DIRECT

CONTACT COULD RESULT IN SEVERE BURNS.

TAKE CARE TO AVOID CONTACT WITH HOT

KETTLE BODY OR HOT PRODUCT, WHEN

ADDING INGREDIENTS, STIRRING OR

TRANSFERRING PRODUCT TO

ANOTHER CONTAINER.

CAUTION

DO NOT OVERFILL THE KETTLE WHEN

COOKING, HOLDING OR CLEANING. KEEP

LIQUIDS 2-3” (5-8 cm) BELOW THE KETTLE

RIM TO ALLOW CLEARANCE FOR STIRRING,

BOILING PRODUCT AND SAFE TRANSFER.

CAUTION

DO NOT TILT KETTLE BODY WITH COVER OR

BASKET INSERT IN PLACE. COVER MAY

SLIDE OFF, CAUSING INJURY TO OPERATOR.

WARNING

WHEN TILTING KETTLE:

1) WEAR PROTECTIVE OVEN MITT
AND PROTECTIVE APRON.

2) USE DEEP CONTAINER TO CONTAIN AND
MINIMIZE PRODUCT SPLASHING.

3) PLACE CONTAINER ON STABLE, FLAT
SURFACE, CLOSE TO THE KETTLE.

4) STAND AWAY FROM POUR PATH
OF HOT CONTENTS.

5) POUR SLOWLY, KEEP CONTROL OF
KETTLE, AND RETURN KETTLE BODY

SLOWLY TO UPRIGHT POSITION AFTER

CONTAINER IS FILLED OR TRANSFER

IS COMPLETE.

6) DO NOT OVERFILL CONTAINER. AVOID
DIRECT SKIN CONTACT WITH HOT

CONTAINER AND ITS CONTENTS.

ture is accepted, it may be changed at any time by pressing the
MANUAL button and resetting the temperature using the same
process above.
i. HIGH TEMP button – Used to set operating temperature of

the kettle at a preset high intensity (default = 7). Can be
pressed at any time during operation of the unit to change
the set temperature to the preset value except when there
is an active TIMER enabled.

ii. TIMER button - once the appropriate set temperature is

selected using the HIGH TEMP, MANUAL or LOW TEMP
buttons; a countdown timer can be set to remind the user
when the cooking process is completed.

1. Range – 1 minute to 10 hours

2. When the timer expires:
a. the set temperature will automatically change

to the LOW TEMP setting and will continue at
this setting until the user changes the tem­perature via MANUAL or HIGH TEMP buttons

b. An audible alarm will notify the user that at-

tention is required, the alarm will continue to
sound until the user presses the TIMER button.

3. An active timer can be cancelled by pressing and
holding the TIMER button for 5 secs

4. Set temp can be changed during an active timer by
pressing the MANUAL button and adjusting the set
temp using the Temperature knob and display

5. HIGH TEMP and LOW TEMP presets cannot be used
to change the setpoint once a TIMER has started.

h. READY alarm – The control will sound 3 beeps when the unit has

reached within 20 degrees of set point during pre-heat and when
a higher set temperature is selected.

i. On Crank tilt (TDHC) units, a handwheel controls the worm and

gear mechanism that smoothly tilts the kettle body and holds it in
the desired position.

B. Operating Procedure

1. To Start Kettle:
a. CHECK THE WATER LEVEL IN THE JACKET EVERY DAY. The level

should be in the middle of the sight glass. If the water level is low,
see Jacket Filling in the Maintenance section of this manual.

b. Check the pressure/vacuum gauge. If the gauge does not show

20 to 30 inches of vacuum (i.e., a reading of 20 to 30 below zero),

see Jacket Vacuum in the Maintenance section of this manual.
c. DO NOT attempt to light any burner with a flame.
d. Open the main supply gas valve (handle in line with the pipe).
e. Turn the switch to ON.
f. Set heat using instructions above.

2. To Stop Kettle Heating:
a. Turn the switch OFF.
b. Turn the manual gas valve OFF (handle a right angle to gas line).
c. Disconnect the units electrical power.

Left the rear of the lid first.

OM-TDH/TDHC 11

Operation

CAUTION

DO NOT OVER FILL THE KETTLE WHEN

COOKING, HOLDING OR CLEANING. KEEP

LIQUIDS AT A MINIMUM OF 2-3” (5-8 CM)
BELOW THE KETTLE BODY RIM TO ALLOW
CLEARANCE FOR STIRRING, BOILING AND

SAFE PRODUCT TRANSFER.

3. To Relight Kettle
a. Close main gas supply valve.
b. Set on-off switch to OFF.

Wait five minutes, then proceed as directed under To Start Kettle Heating.

c.

4. If electric power fails, do not attempt to operate the unit. When power is
restored, proceed as directed in To Start Kettle Heating.

5. To Transfer Product or Empty Kettle:
a. “Classic” or “Advanced” Crank Tilt Kettles: The kettle body is

tilted using the crank tilt handwheel. Turning the crank counter­clockwise tilts the kettle body; clockwise returns it to an upright
position. The kettle body will remain in any tilted position.

b. Hand Tilt Kettles: The kettle is designed to be tilted in a controlled

manner. Grasp the insulated plastic ball firmly. Maintain a firm grip
on the handle when tilting, keeping the kettle body in a tilted posi­tion or SLOWLY returning the kettle body to an upright position.

6. Use of Common Accessories
Lift-Off Cover:
a. As with stock pot cooking, an optional lift off cover will speed up

the heating of water and food products. A cover helps retain heat
in the cooking vessel and reduces the amount of heat and humid­ity released into the kitchen. Use of a cover can reduce some
product cook times and help maintain the temperature, color and
texture of products being held or simmered for extended periods.

b. Make sure the plastic ball handle is secure on the lift off cover be-

fore using. ALWAYS use the plastic handle to place or remove cover
from the kettle. Wear protective oven mitts and a protective apron.

c. When putting the cover on the kettle, position it on top of kettle

rim, with its flat edge facing the pouring lip.

d. When removing cover:

1) Firmly grasp plastic handle

2) Lift rear edge (farthest from operator) 1-2” (3-5 cm) to
allow any steam and water vapor to escape the cooking
vessel. Wait 2-3 seconds.

3) Tilt cover to 45-60° angle and allow any hot condensate or
product to roll off cover back into kettle.

4) Remove cover, ensuring that any remaining hot condensate
or product does not drip on operator, floor or work surfaces.

5) Place cover on safe, flat, sanitary, out-of-the-way surface,
or return to kettle rim. Cover may also be placed in the
optional holder for cover as shown in the photograph.

12 OM-TDH/TDHC

Basket Insert:
a. An optional kettle basket insert can assist in cooking water-boiled

products including eggs, potatoes, vegetables, shell fish, pasta and
rice. The nylon mesh liner must be used when cooking product
smaller than the mesh size of the basket, which is approximately
1/4” (6 mm). This includes rice and small pasta shapes.

b. Tips For Use:

1) Allow for the water displacement of the basket and product
to be cooked. This may mean only filling the kettle half full
of water. Test the basket and product displacement with the
kettle OFF, and with cold water in the kettle.

Operation

2) Load basket on a level, stable work surface.

3) Lift the loaded basket with both hands. Get help from
another person if the basket is too heavy for safe handling.
Then slowly lower product into kettle.

4) When removing basket with cooked product, lift basket
straight up, ensuring bottom of basket clears the rim and
pouring lip of the kettle. Wear protective oven mitts and
protective apron.

5) Allow hot water to fully drain from product, before moving
basket away from the kettle. Do not rest kettle basket on
kettle rim or pouring lip. If basket is too heavy for individual
to lift and safely move, get help from another person.
Remove product immediately from basket into another
container, being sure to avoid contact with hot product and
hot basket or place basket with food on stable, flat surface,
setting it inside a solid steamer or bake pan, to catch any
remaining hot water draining from product.

Sequence of Operation

The following “action-reaction” outline is provided to help understand how the kettle works.

1. When the power switch is turned on, it starts the spark igniter and opens the automatic valve for the pilot burner. The spark
ignites a pilot flame, which heats the sensor. The sensor then sends a signal to turn off the spark. The flame thereafter acts as
a standing pilot until the power is turned off.

2. If the pilot flame is not sensed within 90 seconds after spark begins, a timer shuts down the entire operation. To attempt a
second trial for ignition, turn off the power switch. Check the gas supply valves and wait five minutes before trying again
by switching power on. If you cannot establish a pilot flame in four tries, close all valves, turn off the power, and contact an
authorized Service Agency.

3. When the operator sets a temperature on the controller, it causes the automatic valve to admit gas to the main burner, where
it is ignited by the pilot flame. When the kettle reaches the set temperature, the relay switch opens. This stops the signal to
the gas control valve and shuts off gas to the main burner. The pilot flame remains lit. When the kettle cools below the set
temperature, the relay switch closes and starts another cycle. On and off cycling continues and maintains the kettle at the
desired temperature. This action is indicated by the Heat indicator light.

The kettle has the following safety features in addition to the 90-second ignition timer:

1. Low water cutoff relay that will shut off gas supplies to all burners until the jacket water level is corrected.

2. High limit pressure switch, set to open at about 43 PSI and to shut down the burners until jacket pressure is decreased.

3. Pop safety valve, which will release steam if jacket pressure exceeds 50 PSI.

4. Tilt switch, which shuts off all burners when the kettle is tilted.

5. Gas pressure regulator built into the gas control valve.

OM-TDH/TDHC 13

Cleaning

WEAR EYE

PROTECTION

OM-TD

another container, being sure to avoid
contact with hot product and hot basket
or. . .

f) Place basket with food on stable, at

surface, setting it inside a solid steamer
or bake pan, to catch any remaining hot
water which might drain from product.

c. Prepare a hot solution of the detergent/

cleaning compound as instructed by the
supplier.

OM-TD

OM-TD

another container, being sure to avoid
contact with hot product and hot basket
or. . .

f) Place basket with food on stable, at

surface, setting it inside a solid steamer
or bake pan, to catch any remaining hot
water which might drain from product.

c. Prepare a hot solution of the detergent/

cleaning compound as instructed by the
supplier.

OM-TD

WARNING

KEEP WATER AND SOLUTIONS AWAY FROM

CONTROLS AND ELECTRICAL EQUIPMENT.
NEVER SPRAY THE SUPPORT HOUSING OR

ELECTRICAL CONNECTIONS.

CAUTION
MOST CLEANERS ARE HARMFUL TO THE
SKIN, EYES, MUCOUS MEMBRANES, AND

CLOTHING. PRECAUTIONS SHOULD BE

TAKEN. WEAR RUBBER GLOVES, GOGGLES

OR FACE SHIELD, AND PROTECTIVE

CLOTHING. READ THE WARNINGS AND

FOLLOW THE DIRECTIONS ON THE LABEL

OF THE CLEANER CAREFULLY.

WARNING

AVOID DIRECT CONTACT WITH HOT

SURFACES. DIRECT SKIN CONTACT COULD

RESULT IN SEVERE BURNS.

NOTICE

NEVER LEAVE A CHLORINE SANITIZER IN

CONTACT WITH STAINLESS STEEL

SURFACES LONGER THAN 30 MINUTES.

LONGER CONTACT CAN CAUSE

STAINING AND CORROSION.

A. Suggested Cleaning Supplies:

1. Cleaner, such as Klenzade HC-10 or HC-32 from ECOLAB, Inc. or
equivalent.

2. Kettle brushes in good condition.

3. Sanitizer such as Klenzade XY-12.

4. Film remover such as Klenzade LC-30.

B. Precautions

Before cleaning, shut off the kettle by turning the main power switch to “OFF,”

and shut off all electric power to the unit at a remote switch, such as the circuit
breaker.

C. Procedure

1. Clean food-contact surfaces as soon as possible after use. If the unit is in
continuous use, thoroughly clean and sanitize the interior and exterior at
least once every 12 hours.

2. Scrape and flush out food residues. Be careful not to scratch the kettle
with metal implements.

3. Prepare a hot solution of the detergent/ cleaning compound as instructed
by the supplier. Clean the unit thoroughly. A cloth moistened with clean­ing solution can be used to clean controls, housings, and electrical
conduits.

4. Rinse the kettle thoroughly with hot water. Then drain completely.

5. As part of the daily cleaning program, clean all inside and outside sur­faces that may have been soiled. Remember to check such parts as the
underside of the cover, control housing, etc.

Use a brush, sponge, cloth, plastic or

rubber scraper, or plastic wool to clean.

Don’t use metal implements

or steel wool when cleaning.

14 OM-TDH/TDHC

6. To remove burned-on foods, use a brush, sponge, cloth, plastic or rubber
scraper, or plastic wool along with the cleaning solution. To reduce effort
required in washing, let the detergent solution sit in the kettle for a few
minutes and soak into the residue. Do NOT use abrasive materials or
metal tools that might scratch the surface. Scratches make the surface
harder to clean and provide places for bacteria to grow. Do not use steel
wool, which will leave particles in the surface and cause eventual corro­sion and pitting.

7. The outside of the unit may be cleaned with a warm water (100°F or
less) spray. Do not use a high pressure spray.

8. The outside of the unit may be polished with a recognized stainless steel
cleaner like “Zepper” from Zep Manufacturing Company.

Cleaning

NOTICE

NEVER LEAVE A CHLORINE SANITIZER IN

CONTACT WITH STAINLESS STEEL

SURFACES LONGER THAN 30 MINUTES.

LONGER CONTACT CAN CAUSE

STAINING AND CORROSION.

9. When the equipment needs to be sanitized, use a sanitizing solution
equivalent to one that supplies 200 parts per million chlorine. Obtain
advice on the best sanitizing agent from your supplier of sanitizing prod­ucts. Following the supplier’s instructions, apply the sanitizing agent after
the unit has been cleaned and drained. Rinse off the sanitizer thoroughly.

10. It is recommended that the unit be sanitized just before use.

11. Clean the kettle thoroughly. If there is difficulty removing mineral de­posits or a film left by hard water or food residues, then use a de-liming
agent, following manufacturer directions.

12. Rinse and drain the unit thoroughly before further use.

13. If especially difficult cleaning problems persist, contact your cleaning
product supplier for assistance. The supplier has a trained technical staff
with laboratory facilities to serve you.

OM-TDH/TDHC 15

Maintenance

WARNING

AVOID ANY EXPOSURE TO THE STEAM

BLOWING OUT OF THE PRESSURE

RELIEF VALVE. SEVERE BURNS CAN

RESULT ON EXPOSED SKIN.

FAILURE TO CHECK PRESSURE RELIEF

VALVE OPERATION PERIODICALLY

COULD RESULT IN PERSONAL INJURY

AND/OR DAMAGE TO EQUIPMENT.

CAUTION

KEEP GREASE AWAY FROM ELECTRICAL

PARTS LOCATED NEAR THE GEARS.

Make sure that the

open end of the elbow

on the pressure

relief valve is directed

downward.

The pressure gauge

should show a

vacuum of 20 to 30

inches when the

kettle is cold.

NOTICE: Contact an authorized representative when repairs are required.

A Maintenance & Service Log is provided at the back of this manual. Each time
maintenance is performed on your kettle, enter the date on which the work was done,
what was done, and who did it. Keep this manual on file and available for operators to
use. Periodic inspection will minimize equipment down time and increase the efficiency
of operation. The following points should be checked:

A. Jacket Vacuum/Removing Air from Jacket (by Operator)

Every day, while the kettle is cold, read the pressure/ vacuum gauge. A positive

reading or a negative reading between zero and 20” vacuum on the pressure/
vacuum gauge indicates excess air in the jacket. Air in the jacket slows kettle
heating and can prevent the kettle from reaching operating temperature.

To remove air:

1. Start the unit. (See “Operation” section).

2. Make sure the elbow on the outlet of the pressure relief valve is turned so
that escaping steam is directed down toward the floor. Be sure and follow
the instructions on the attached pressure relief valve tag.

3. When the pressure/vacuum gauge reaches a positive pressure reading of
5 PSI, release trapped air by lifting the pressure relief valve ring for about
one second. Repeat this step, then let the valve ring snap closed, so the
valve will seat properly and not leak.

B. Pressure Relief Valve (by Operator)

At least twice a month, test the pressure relief valve. Test the valve with the

kettle operating at 15 PSI (105 kPa), by holding the test ring for at least five
seconds. Then release the ring and permit the valve to snap shut. If the ring does
not activate, if there is no discharge, or if the valve leaks, stop using the kettle
immediately and contact a authorized service representative.

16 OM-TDH/TDHC

C. Grease / Lubrication (by Service)

Hand Tilt Models: At least twice a year, grease the two trunnion bearings. The

bearings are located within the kettle support housing. Remove the access
panels from the support housing with a screwdriver to gain access to the
grease fittings. Use a lithium-based, multi-purpose grease. When the access
panels are removed, the mounting bolts for the trunnion bearings and tilt switch
can also be checked for tightness. When finished, reassemble access panels to
support housing.

Crank Tilt Models: The gear housing has been fitted for proper lubrication of

moving parts. Since the gears do not run in oil, periodic lubrication with grease
is essential. Frequency of lubrication depends on operating conditions, but
should occur at least once every six months. The use of a Number Two grade
LGI lithium grease is recommended. Add grease through the Zerk fittings on the
gear housing until grease flows out of the bearings around the trunnion shaft.
Place a liberal amount of grease on the gear to cover the arc that is in contact
with the worm gear.

Maintenance

WARNING

TO AVOID INJURY, READ AND FOLLOW

ALL PRECAUTIONS STATED ON THE
LABEL OF THE WATER TREATMENT

COMPOUND.

WARNING

USE OF ANY REPLACEMENT PARTS OTHER

THAN THOSE SUPPLIED BY THE

MANUFACTURER OR THEIR AUTHORIZED

DISTRIBUTORS CAN CAUSE INJURY
TO THE OPERATOR AND DAMAGE TO
THE EQUIPMENT AND WILL VOID ALL

WARRANTIES.

CAUTION

INSURE ELECTRICAL POWER IS REMOVED

AND THE GAS IS TURNED OFF AT THE

SHUTOFF VALVE PRIOR TO PERFORMING

ANY MAINTENANCE ON THIS KETTLE.

WARNING

THIS KETTLE IS DESIGNED TO BE

WATER RESISTANT. FAILURE TO FOLLOW

PROPER MAINTENANCE PROCEDURES

MAY VOID THE WARRANTY.

D. Jacket Filling

Every day, before you turn on the unit, make sure the water level is

approximately in the center of the water gauge glass. The jacket was filled at
the factory with the proper amount of treated water, and is airtight, but over
time steam may be vented and water lost.

From time to time, you may need to restore the water to its proper level. The

procedure for adding water follows.

1. If you are replacing water lost as steam, use distilled water. Do not use tap
water. If you are replacing treated water that was drained from the jacket,
prepare more treated water as directed below.

2. Allow the kettle to cool completely. Remove the pipe plug from the jacket
fill assembly. Pour in the distilled or treated water. Using a funnel will help
you in this process. Hold the pressure relief valve open while you pour, to
let air escape from the jacket. Continue adding water until the water level
rises to the center of the round sight glass.

3. Air that gets into the jacket during the filling operation must be removed,
because it will make heating less efficient. Follow the procedure in Jacket
Vacuum/Removing Air From Jacket above, to restore a negative pressure
reading.

E. Water Treatment

1. Fill a mixing container with the amount of water required. Use only distilled
water.

The pressure relief valve and fill

plug are located directly behind the

pressure/vacuum gauge.

Model

TDH-20 (C,A), TDHC-20 (C,A) 5 gal (20 qt), 19 liter 6 quart, 5.7 liter

TDH-24 (C,A), TDHC-24 (C,A) 6 gal (24 qt ), 23 liter 6 quart, 5.7 liter

TDH-40 (C,A), TDHC-40 (C,A) 10 gal (40 qt), 38 liter 12 quart, 11.4 liter

TDH-48 (C,A), TDHC-48 (C,A) 12 gal (48 qt), 45 liter 12 quart, 11.4 liter

Kettle Capacity Jacket Capacity

2. Hang a strip of pH test paper on the rim of the container, with about 1 inch
of the strip below the surface of the water.

3. Stir the water continuously, while you slowly add water treatment
compound until a color between indicating a pH of 10.5 and 11.5 is
reached. (Shown on the pH test kit chart.) Judge the pH by frequently
comparing the test strip with the color chart provided in the pH test kit. If
there is a problem distinguishing color, use a pH meter.

4. Use a measuring cup to add the compound so that you may record the
exact amount used.

5. The amount may be used again, if the same water sources and compound
are used in the future. However, it is best to check the pH each time
treated water is prepared.

OM-TDH/TDHC 17

Troubleshooting

Your kettle is designed to operate smoothly and efficiently if properly maintained. However, the following is a list of checks to make
in the event of a problem. Wiring diagrams are furnished inside the service panel and in this manual. If an item on the list is followed
by X, the work should be done by a qualified service representative.

WARNING

BEFORE REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER SUPPLY

AND CLOSE THE MAIN GAS VALVE. ALLOW FIVE MINUTES FOR UNBURNED GAS TO VENT.

USING REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY THE MANUFACTURER OR AN AUTHORIZED

DISTRIBUTOR CAN CAUSE OPERATOR INJURY AND EQUIPMENT DAMAGE AND WILL VOID ALL WARRANTIES.

SYMPTOM WHO

Display not lit
(Advanced only)

PROB in display
(Advanced only)

HI in display
(Advanced only)

Kettle is hard to tilt User a. Gears for foreign materials, and lubrication.

Kettle continues heating
after it reaches desired
temperature

Kettle stops heating before it
reaches the desired
temperature

Safety Valve pops open User a. For air in the jacket. See “Jacket Vacuum” in the Maintenance section

Burners will not light User a. That the main gas supply valve is open. (handle is in line with gas pipe).

System does not produce a
spark

User a. That power supply is on.

Auth Service

Rep Only

Auth Service

Rep Only

Auth Service

Rep Only

Auth Service

Rep Only

User a. Temperature controller dial setting.

Auth Service

Rep Only

User a. Temperature controller dial setting.

Auth Service

Rep Only

Auth Service

Rep Only

Auth Service

Rep Only

Auth Service

Rep Only

X indicates items which must be performed by an authorized technician.

b. Fuses, accessible by removing caps on the side of the control box.
c. For loose or broken wires. X
d. Temperature controller functioning, by listening for a click when the
switch opens or closes and verifying LEDs on back of board. X
e. Contactor functioning. X

a. For loose or broken wires or damaged/failed RTD probe. X
b. PCB board malfunction/failure

a. For loose or broken wires or damaged/failed RTD probe. X
b. PCB board malfunction/failure

b. Gears for alignment. X
c. Worm gears or broken gears. X

b. Temperature controller calibration and offsets.X
c. Controller operation. The Controller relay should click when the dial is
rotated to settings above and below the temperature of the kettle.X

b. Temperature controller calibration and offsets.X
c. Controller operation. The Controller relay should click when the dial is
rotated to settings above and below the temperature of the kettle.X

b. Thermostat dial setting.

c. For defective controller. The temperature controller should click when
the dial is rotated to settings above and below the temperature of the
kettle. If defective, replace.X
d. For defective safety valve. If the valve pops at pressures below 49 PSI,
replace.X

b. Gas supply to the building.
c. That the kettle body is not tilted.

d. Temperature controller operation. The thermostat should click when the
dial is rotated to settings above and below the temperature of the kettle.X
e. That tilt limit switch is closed when body is not tilted.X

a. AC voltage between terminals on secondary side of transformer. If it is
not 24 Volt, replace the transformer. X
b. That the high tension cable is firmly attached and in good condition. If
cracked or brittle, replace.X
c. Pilot electric ceramic for crack or break.X
d. Pilot spark gap. Regap.X

WHAT TO CHECK

18 OM-TDH/TDHC

Troubleshooting

SYMPTOM WHO

Spark is present but the pilot will
not light

Pilot lights, but main burner will
not come on and spark does not
stay on

Pilot lights, but main burner will
not come on, the spark stays on

Main burner comes on but will
not stay on

Auth Service

Rep Only

Auth Service

Rep Only

Auth Service

Rep Only

Auth Service

Rep Only

X indicates items which must be performed by an authorized technician.

WHAT TO CHECK

a. That the pilot valve is securely connected to terminals.X
b. For 24 VAC at terminals PV and PV/MV. If 24V is not present, replace
the ignition control module.X
b. That gas pressure is at least 3.5” W.C.(8.7818 b).X
c. For gas at the pilot. If it is not flowing:
(1) Check the pilot gas line for kinks and obstructions.X
(2) Clean orifice, if necessary.X
(3) Check magnetic operator for pilot valve on gas valve. Repair or
replace as necessary.X
d. That the pilot spark gap is located in the pilot gas stream. If not,
adjust or replace the pilot burner.X
e. For drafts. Shield the pilot burner, if necessary.X

a. For 24 V between terminals PV and PV/MV. If 24V is not present,
replace the ignition control module.X
b. That gas pressure is at least 3.5” W.C.(8.7818 b).X
c. Electrical connections of the main valve to terminals, to a sure that
they are securely attached. Check magnetic operator for pilot valve on
gas valve. Repair or replace as necessary.X

a. Check for bad burner ground. If necessary, repair with high
temperature wire.X
b. Pilot burner ceramic insulator for cracks.X
c. That cable is not grounded out. If it is, correct the ground-out
condition or replace cable.X
d. For proper gas pressure.X
e. Clean pilot assembly, or replace if necessary.X
f. Tighten all mechanical and electrical connections.X
g. If the pilot flame is weak, increase pilot orifice size.X
h. Replace ignition control module.X

a. Check burner ground for bad wire or connection. Replace if
necessary with high temperature wire.X
b. Check for low gas supply pressure. If necessary, replace ignition
control module.X

OM-TDH/TDHC 19

For Classic Control Models

Parts List

Key Qty Description

1 1 KETTLE BODY ASSY

2 1 GLASS, SITE ROUND

3 1 GAS VALVE, NAT. GAS

4 1 GAS VALVE, MANUAL SHUT

OFF

5 1 2" ALUMINUM KNOB

6 1 VALVE, 1/4" SWING, CHECK

7 1 GAUGE

8 1 POWER SWITCH

9 1 CONTROL, CLASSIC

10 1 VALVE PRESSURE RELIEF

11 2 LIGHT, AMBER

12 1 ROTARY SHAFT SEAL

13 1 SWITCH, PRESSURE (NOT

SHOWN)

14 1 SHAFT, HANDLE

15 1 RING, 1/2"

16 1 BALL, RED

17 1 ELECTRODE, WATER LEVEL

(NOT SHOWN)

Part No.

175091

108554

098443

098445

175095

096915

084208

174871

174843

097005

116384

101145

096963

018963

012692

012691

074623

20 OM-TDH/TDHC

For Advanced Control Models

Parts List

Key Qty Description

1 1 KETTLE BODY ASSY

2 1 GLASS, SITE ROUND

3 1 GAS VALVE, NAT. GAS

4 1 GAS VALVE, MANUAL SHUT

OFF

5 1 2" ALUMINUM KNOB

6 1 VALVE, 1/4" SWING, CHECK

7 1 GAUGE

8 1 POWER SWITCH

9 1 CONTROL, ADVANCED

10 1 VALVE PRESSURE RELIEF

11 2 LIGHT, AMBER

12 1 ROTARY SHAFT SEAL

13 1 SWITCH, PRESSURE (NOT

SHOWN)

14 1 SHAFT, HANDLE

15 1 RING, 1/2"

16 1 BALL, RED

17 1 ELECTRODE, WATER LEVEL

(NOT SHOWN)

Part No.

175091

108554

098443

098445

175095

096915

084208

174871

174837

097005

116384

101145

096963

018963

012692

012691

074623

OM-TDH/TDHC 21

Key Description Part No.

1 NIPPLE, 3/8” NPT X 2”

2 UNION, 3/8” NPT

3 MANIFOLD,

5- AND 6-GALLON

3 MANIFOLD,

10- AND 12-GALLON

4 PILOT

5 TUBE, PILOT

6 PILOT ORIFICE SPUD NATU-

RAL GAS

6 PILOT ORIFICE SPUD PRO-

PANE GAS

7 FITTING, COMPRESSION 90

(NOT SHOWN)

8 ORIFICE SEE TABLE BELOW

005679

005686

137757

137056

097024

135487

098648

098647

004584

-

Parts List

Model

THD-20
TDHC-20

TDH-24
TDHC-24

TDH-40
TDHC-40

TDH-48
TDHC-48

# of Orifices

8

137758

8

137758

12

135543

12

135543

Natural Gas

Propane Gas

137756 0 - 2000 ft.

137756 0 - 2000 ft.

137756 0 - 2000 ft.

137756 0 - 2000 ft.

Altitude

22 OM-TDH/TDHC

For Classic & Advanced Control Models

Parts List

Hand Tilt Units Only

Key Description

1

WELDMENT, BASE

2

WELDMENT, PEDESTAL

3

WELDMENT, BASE SUPPORT

4

WASHER LOCK 1/2" S.S.

5

SCREW, HEX HD 1/2-13 X 1 1/4"

6

NUT HEXAGON 1/2" - 13

7

SCREW TRUSS HD 1/4-20 X 1/2
S.S.

8

ASM, CABINET WELD

9

SHROUD BURNER WELD ASM

10

SHIELD, PILOT

11

BURNER BRACKET WELD ASM.

12

BRACKET, BURNER SUPPORT

13

SCREW, TRUSS HD #8-32 X 3/8"

14

SCREW, HED HD 1/4"-20 X 1/2"

15

WASHER LOCK 1/4"

16

SCREW HEX HD CAP 1/4"-20 X
1-1/2"

17

NUT HEXAGON KEPS 1/4" - 20

18

PLATE SHROUD WELD ASM

19

SEAL TRUNNION

20

PLATE, SHROUD WELD ASM
(5/6-QT)

20

PLATE, SHROUD WELD ASM
(10/12-QT)

21

GASKET, 3/8" THK X 1/2" WIDE,
6" CENTER

22

E-RING, 1.875" DIA

23

FAUCET BRACKET

24

GROMMET 7/8" ID X 1-5/8" OD

25

COVER, CABINET

26

SCREW, 10-32 X 1/2" COMBI
HEAD

27

CONNECTOR STRAIGHT 3/8"
SEALTITE

28

HARNESS ASM

29

HARNESS ASM HIGH VOLTAGE

30

STRAP CABLE TY-RAP

31

SEALANT RTV #732, GREY

Part No.

137060

124735

124729

005657

005623

005603

012700

174762

135526

135524

135527

137353

005764

005608

005655

005469

012940

137680

137005

137700

137380

137588

138357

137738

007400

175309

137766

001669

137006

137456

011093

001711

OM-TDH/TDHC 23

For Classic & Advanced Control Models

Parts List

Crank Tilt Units Only

Key Description

1

WELDMENT, BASE

2

WELDMENT, PEDESTAL

3

WELDMENT, BASE SUPPORT

4

WASHER LOCK 1/2" S.S.

5

SCREW, HEX HD 1/2-13 X 1 1/4"

6

NUT HEXAGON 1/2" - 13
SCREW TRUSS HD 1/4-20 X 1/2

7

S.S.

8

ASM, CABINET WELD

9

SHROUD BURNER WELD ASM

10

SHIELD, PILOT

11

BURNER BRACKET WELD ASM.

12

BRACKET, BURNER SUPPORT

13

SCREW, TRUSS HD #8-32 X 3/8"

14

SCREW, HED HD 1/4"-20 X 1/2"

15

WASHER LOCK 1/4"
SCREW HEX HD CAP 1/4"-20 X

16

1-1/2"

17

NUT HEXAGON KEPS 1/4" - 20

18

PLATE SHROUD WELD ASM

19

SEAL TRUNNION

PLATE, SHROUD WELD ASM

20

(5/6-QT)

Part No.

137060
174792
124729
005657
005623
005603

012700

174799
135526
135524
135527
137353
005764
005608
005655

005649

012940
137680
137005

137700

PLATE, SHROUD WELD ASM

20

(10/12-QT)

GASKET, 3/8" THK X 1/2" WIDE,

21

6" CENTER

22

E-RING, 1.875" DIA

23

FAUCET BRACKET

24

GROMMET 7/8" ID X 1-5/8" OD

25

COVER, CABINET
SCREW, 10-32 X 1/2" COMBI

26

HEAD
CONNECTOR STRAIGHT 3/8"

27

SEALTITE

28

HARNESS ASM

29

HARNESS ASM HIGH VOLTAGE

30

STRAP CABLE TY-RAP

31

SEALANT RTV #732, GREY

32

O-RING #018

33

E-RING, 1.00"

34

COLLAR, SHAFT SEAL, .750"

35

SEAL, SHAFT 1.00"

137380

137588

138357
137738
007400
175309

137766

001669

137006
137456
011093
001711
138359
138356
138354
136088

24 OM-TDH/TDHC

Parts List

Hand Tilt Units Only

Key Description

1

SPACER, PILLOW BLOCK

2

PILLOW BLOCK

3

STOP, MANUAL TILT

4

KEY, 1/4 SQ X .5” LG

5

COLLAR SET 1-1/2” ID X 2-1/4”
OD X 3/4” THK

6

SCREW HEX HD CAP 3/8”-16 X
1-1/2”

7

WASHER FLAT 3/8”

8

NUT HEX 3/8”-16

9

NUT HEX 5/16”-18

10

SCREW SET SOCKET

11

SCREW SET SOCKET

12

SCREW HEX HD CAP 5/16”-18
X 1”

Part No.

137692

002989

137697

137746

003118

005615

005830

005619

005602

086617

003400

005613

OM-TDH/TDHC 25

For Classic & Advanced Control Models

Parts List

Crank Tilt Units Only

Key Description

1

ASSEMBLY, GEAR CARRIER

2

SHAFT, WORM

3

GEAR, WORM

4

ASSEMBLY, GEAR SECTOR

5

ASSEMBLY, BEARING BLOCK

6

KEY, 1/4 SQ X 1” LG.

7

RETAINING RING 1.500

8

ASSEMBLY, HANDWHEEL

9

PIN, ROLL 1/4” X 1.63 LG.

10

WASHER, FLAT 3/8”

11

WASHER, LOCK 3/8”

12

SCREW, 3/8-16 X 1” HEX HD

13

PIN, ROLL 1/4” X 1.25” LG.

Part No.

124741

122374

128001

128028

128021

122371

124764

124719

128036

005830

005618

005612

012614

26 OM-TDH/TDHC

For Classic & Advanced Control Models

Key Qty Description Part No.

1 1 PRESSURE SWITCH

2 1 RTD PROBE

3 1 WATER LEVEL ELECTRODE

4 1 BRACKET

5 1 COVER (NOT SHOWN)

6 1 GASKET, BOTTOM COVER

(NOT SHOWN)

7 1 SCREW, 1/4-20 X 1 1/2 (NOT

SHOWN)

8 1 GASKET, BOTTOM COVER

SCREW (NOT SHOWN)

096963

175429

015589

137736

003141

137969

012597

137968

Parts List

OM-TDH/TDHC 27

Key Description Part No.

1 GAUGE, COMPOUND PRES-

SURE W/DUAL

2 VALVE, PRESSURE RELIEF

50 PSI

3 ASSY, WATER FILL SUB

4 ELBOW, ½” NPT 90 DEG

STREET BLK

084208

097005

137438

096905

Parts List

28 OM-TDH/TDHC

For Classic & Advanced Control Models

Parts List for TDH

Key Qty Description

1 1 ELEC. MOUNTING BRACKET

2 1 CONTROL, WATER LEVEL,

24V

3 1 MICRO SWITCH

4 1 TERMINAL BLOCK, TWO

POLE

5 1 IGNITION MODULE

6 1 FUSE, HOLDER, TYPE 3 AG

7 1 FUSE, THREE AMP TYPE 3 AG

8 1 SCREW, 6-32 X 3/8 LG (FOR

#6)

9 3 P.C. BOARD MOUNTING POST

10 5 SCREW, 8 X 3/8 LG, HEX

SLOT (FOR #5 AND #17)

11 1 SCREW, #8-32 X 1-1/4 RND

HEAD (FOR #4)

12 2 SCREW, ROUND HEAD 4-40 X

3/4 LG. (FOR #3)

13 1 BARRIER INSULATION (FOR

#3)

14 2 WASHER SHAKEPROOF

LOCK, #6 (FOR #3)

15 2 NUT, HEX 4-40 (FOR #3)

16 1 TRANSFORMER, 20 VA 120V

Part No.

175457

122192

002982

003887

085153

077854

077853

009697

099901

069789

005056

003122

003490

005715

003121

137487

OM-TDH/TDHC 29

For Classic & Advanced Control Models

Parts List for TDHC

Key Qty Description

1 1 ELEC. MOUNTING BRACKET

2 1 CONTROL, WATER LEVEL,

24V

3 1 TERMINAL BLOCK, TWO

POLE

4 1 IGNITION MODULE

5 1 FUSE, HOLDER, TYPE 3 AG

6 1 FUSE, THREE AMP TYPE 3 AG

7 1 SCREW, 6-32 X 3/8 LG (FOR

#6)

8 3 P.C. BOARD MOUNTING POST

9 5 SCREW, 8 X 3/8 LG, HEX

SLOT (FOR #5 AND #17)

10 1 SCREW, #8-32 X 1-1/4 RND

HEAD (FOR #4)

12 1 TRANSFORMER, 20 VA 120V

- 1 SCREW, ROUND HEAD 4-40 X
3/4 LG. (FOR #3)

- 1 BARRIER INSULATION (FOR
#3)

- 1 WASHER SHAKEPROOF
LOCK, #6 (FOR #3)

- 1 NUT, HEX 4-40 (FOR #3)

Part No.

175323

122192

003887

085153

077854

077853

009697

099901

069789

005056

137487

003122

003490

005715

003121

30 OM-TDH/TDHC

For Classic Control Models

Wiring Diagram

OM-TDH/TDHC 31

For Advanced Control Models

Wiring Diagram

32 OM-TDH/TDHC

Service Log

Model No: Purchased From:

Serial No: Location:

Date Purchased: Date Installed:

Purchase Order No: For Service Call:

Date Maintenance Performed Performed By

OM-TDH/TDHC 33

34 OM-TDH/TDHC

OM-TDH/TDHC 35

36 OM-TDH/TDHC

1055 Mendell Davis Drive • Jackson MS 39272

888-994-7636 • 601-372-3903 • Fax [phone]

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PART NUMBER 174844, REV. C (07/17)