Hatco HZMH-24 Installation Manual

hatcocorp.com

WARNING

ADVERTENCIA

AVERTISSEMENT

Register Online!

(see page 2)

S’inscrire en ligne!

(voir page 21)

Heated Zone Merchandisers

Les comptoirs chauffants

HZMH and HZMS Series/Série

Installation and Operating Manual

Manuel d’installation et d’utilisation

Do not operate this equipment unless you
have read and understood the contents
of this manual! Failure to follow the
instructions contained in this manual
may result in serious injury or death.
This manual contains important safety
information concerning the maintenance,
use, and operation of this product. If
you’re unable to understand the contents
of this manual, please bring it to the
attention of your supervisor. Keep this
manual in a safe location for future
reference.

P/N 07.04.569.00 © 2016 Hatco Corporation

English = p 2

No opere este equipo al menos que haya
leído y comprendido el contenido de este
manual! Cualquier falla en el seguimiento
de las instrucciones contenidas en
este manual puede resultar en un serio
lesión o muerte. Este manual contiene
importante información sobre seguridad
concerniente al mantenimiento, uso y
operación de este producto. Si usted
no puede entender el contenido de
este manual por favor pregunte a su
supervisor. Almacenar este manual en
una localización segura para la referencia
futura.

Ne pas utiliser cet équipement sans avoir
lu et compris le contenu de ce manuel ! Le
non-respect des instructions contenues
dans ce manuel peut entraîner de
graves blessures ou la mort. Ce manuel
contient des informations importantes
concernant l’entretien, l’utilisation et le
fonctionnement de ce produit. Si vous ne
comprenez pas le contenu de ce manuel,
veuillez le signaler à votre supérieur.
Conservez ce manuel dans un endroit
sûr pour pouvoir vous y référer plus tard.

Français = p 21

WARNING

CAUTION

CONTENTS

English

Important Owner Information .............................................. 2

Introduction ...........................................................................2

Important Safety Information .............................................. 3

Model Description ................................................................4

All Models ............................................................................ 4

HZMH-XX and HZMH-XXD Models ....................................4

HZMS-XX and HZMS-XXD Models ..................................... 4

Model Designation ...............................................................4

Specifications ....................................................................... 5

Plug Configurations ............................................................. 5

Electrical Rating Charts ....................................................... 5

Factory Setpoints — Horizontal Shelf Models .....................6

Factory Setpoints — Slanted Shelf Models .........................6

Overall Dimensions — HZMH Models ................................7

Overall Dimensions — HZMS Models ................................. 8

Shelf and Zone Dimensions ................................................ 9

Overhead Zone Identification ..............................................9

Installation ...........................................................................10

General .............................................................................. 10

IMPORTANT OWNER INFORMATION

Record the model number, serial number, voltage, and purchase
date of the unit in the spaces below (specification label
located on the side of the control enclosure). Please have this
information available when calling Hatco for service assistance.

Model No. ________________________________________

Serial No. _________________________________________

Voltage ___________________________________________

Operation ............................................................................. 11

General .............................................................................. 11

Changing Shelf Setpoint Temperature and

Operating Mode ...............................................................12

Changing Element Power Percentages ............................13

Changing Between Fahrenheit and Celsius ...................... 14

LCD Controller Flow Chart — Horizontal Shelf Models .... 15

LCD Controller Flow Chart — Slanted Shelf Models ........ 16

Maintenance ........................................................................ 17

General .............................................................................. 17

Daily Cleaning ...................................................................17

Troubleshooting Guide ......................................................18

Options and Accessories .................................................. 19

Limited Warranty ................................................................20

Authorized Parts Distributors ........................... Back Cover

Business
Hours: 7:00 am to 5:00 pm Central Standard Time (CST)

(Summer Hours: June to September—
7:00 am to 5:00 pm CST Monday–Thursday
7:00 am to 4:00 pm CST Friday)

Telephone: [phone]

e-mail: [e-mail]

Date of Purchase ___________________________________

Register your unit!

Completing online warranty registration will prevent delay in
obtaining warranty coverage. Access the Hatco website at
www.hatcocorp.com, select the Parts & Service pull-down
menu, and click on “Warranty Registration”.

INTRODUCTION

Hatco Heated Zone Merchandisers with Spot On® technology
are perfect for holding hot packaged food in convenience
stores, on a buffet line, or at temporary serving areas. Spot-On
technology senses when product is placed in a zone on a shelf,
activating the overhead heat and base heat. The instant-on,
individually-zoned overhead ribbon elements are combined
with heated shelves that have separate front and rear heating
elements to significantly reduce energy consumption. Hot
wrapped products are kept at optimum serving temperatures
without affecting quality. These units feature an LCD controller,
LED lighting on each shelf, and come with a cord and plug set.

Hatco Heated Zone Merchandisers are products of extensive
research and field testing. The materials used were selected
for maximum durability, attractive appearance, and optimum
performance. Every unit is inspected and tested thoroughly
prior to shipment.

This manual provides the installation, safety, and operating
instructions for Heated Zone Merchandisers. Hatco
recommends all installation, operating, and safety instructions
appearing in this manual be read prior to installation or
operation of the warmer.

24 Hour 7 Day Parts and Service
Assistance available in the United States
and Canada by calling 800-558-0607.

Additional information can be found by visiting our web site at
www.hatcocorp.com.

Safety information that appears in this manual is identified by
the following signal word panels:

WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.

CAUTION indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.

NOTICE

NOTICE

injury.

2

is used to address practices not related to personal

Form No. HZMM-1116

English

WARNING

CAUTION

NOTICE

WARNING

IMPORTANT SAFETY INFORMATION

Read the following important safety information before using this equipment to avoid
serious injury or death and to avoid damage to equipment or property

.

ELECTRIC SHOCK HAZARD:

• Plug unit into a properly grounded electrical receptacle
of the correct voltage, size, and plug configuration. If
plug and receptacle do not match, contact a qualified
electrician to determine and install proper voltage and
size electrical receptacle.

• Turn OFF power switch, unplug power cord, and allow
unit to cool before performing any cleaning, setup, or
maintenance.

• DO NOT submerge or saturate with water. Unit is not
waterproof. Do not operate if unit has been submerged
or saturated with water.

• Unit is not weatherproof. Locate unit indoors where
ambient air temperature is a minimum of 70°F (21°C).

• Do not steam clean or use excessive water on unit.

• This unit is not “jet-proof” construction. Do not use
jet-clean spray to clean this unit.

• Do not clean unit when it is energized or hot.

• Do not pull unit by power cord.

• Discontinue use if power cord is frayed or worn.

• Do not attempt to repair or replace a damaged power
cord. Cord must be replaced by Hatco, an Authorized
Hatco Service Agent, or a person with similar
qualifications.

• This unit must be serviced by qualified personnel only.
Service by unqualified personnel may lead to electric
shock or burn.

• Use only Genuine Hatco Replacement Parts when
service is required. Failure to use Genuine Hatco
Replacement Parts will void all warranties and may
subject operators of the equipment to hazardous
electrical voltage, resulting in electrical shock or burn.
Genuine Hatco Replacement Parts are specified to
operate safely in the environments in which they are
used. Some aftermarket or generic replacement parts
do not have the characteristics that will allow them to
operate safely in Hatco equipment.

FIRE HAZARD: Install unit with a minimum of 3″ (76 mm) of
space from rear of unit to a back wall. If safe distances are
not maintained, discoloration or combustion could occur.

Make sure food product has been heated to the proper
food-safe temperature before placing in unit. Failure to
heat food product properly may result in serious health
risks. This unit is for holding pre-heated food product only.

Do not place food product directly onto hardcoat surface.
Food product must be wrapped, boxed, or on a food pan.

Make sure all operators have been instructed on the safe
and proper use of the unit.

This unit is not intended for use by children or persons
with reduced physical, sensory, or mental capabilities.
Ensure proper supervision of children and keep them
away from the unit.

This unit has no “user-serviceable” parts. If service
is required on this unit, contact an Authorized Hatco
Service Agent or contact the Hatco Service Department at
800-558-0607 or 414-671-6350.

BURN HAZARD: Some exterior surfaces on unit will get
hot. Use caution when touching these areas.

Locate unit at proper counter height in an area that is
convenient for use. Location should be level to prevent
unit or its contents from falling accidentally and strong
enough to support the weight of the unit and contents.

Do not move or relocate unit for cleaning. Unit is bulky
and heavy.

Do not lay unit on front or back side. Damage to unit could
occur.

Use non-abrasive cleaners and cloths only. Abrasive
cleaners and cloths could scratch finish of unit, marring its
appearance and making it susceptible to soil accumulation.

IMPORTANT—DO NOT use paper towel or glass cleaner
to clean plastic surfaces such as sneeze guards and
flip-up doors. Paper towel and glass cleaner may scratch
the material. Wipe off plastic surfaces using a soft, clean,
water-dampened cloth.

Do not slide pans across hardcoat surface, use rough­bottomed pans, or drop anything on hardcoat surface.
Scratching may occur. Damage to hardcoat surface
caused by misuse is not covered under warranty.

Clean unit daily to avoid malfunctions and maintain
sanitary operation.

Do not locate unit in area with excessive air movement
around unit. Avoid areas that may be subject to active air
movements or currents (i.e., near exhaust fans/hoods, air
conditioning ducts, and exterior doors).

Form No. HZMM-1116

3

MODEL DESCRIPTION

H Z M X - X X D

Heated Zone Merchandiser

Heated Width of Unit (inches)

No Character = Single Shelf
D = Dual Shelf

H = Horizontal Shelf

S = Slanted Shelf

English

All Models

All Hatco Heated Zone Merchandisers are perfect for holding
hot packaged food in convenience stores, on a buffet line, or
at temporary serving areas. Hot wrapped products are kept
at optimum serving temperatures without affecting quality.
Instant-on, individually-zoned overhead ribbon heating elements
are combined with heated shelves that have separate front and
rear heating elements to significantly reduce energy consumption.
Other features include an LCD controller, LED lighting above each
shelf, product divider rods, hinged glass side panels, and a 6′
(1829 mm) cord and plug set. Heated Zone Merchandisers come
standard in black and are available in several Designer colors.

HZMH-XX and HZMH-XXD Models

HZMH models are horizontal shelf merchandisers designed to
hold hot wrapped product. They are available in widths from
24″ to 60″ (610 to 1524 mm) in six inch (152 mm) increments
and are available in single or dual shelf models.

HZMS-XX and HZMS-XXD Models

The HZMS models are slanted shelf merchandisers designed
to hold hot wrapped product. The shelves are slanted for the
convenience of self-service. They are available in widths from

24″ to 60″ (610 to 1524 mm) in six inch (152 mm) increments

and are available in single or dual shelf models.

HZMH Models

MODEL DESIGNATION

HZMS Models

NOTE: Sneeze guards and flip-up doors are available

for the Heated Zone Merchandisers. Refer to the
OPTIONS AND ACCESSORIES section in this manual
for details.

4

Form No. HZMM-1116

English

WARNING

NEMA 5-15P NEMA 5-20P

NEMA L14-20P

NEMA L14-30P

NEMA 5-30P

Plug Configurations

Units are equipped with an electrical cord and plug appropriate
for the electrical rating of the unit and must be connected to a
dedicated circuit.

ELECTRIC SHOCK HAZARD: Plug unit into a properly
grounded electrical receptacle of the correct voltage,
size, and plug configuration. If plug and receptacle do not
match, contact a qualified electrician to determine and
install proper voltage and size electrical receptacle.

NOTE: The specification label is located on the side of the

control enclosure. See the label for the serial number
and verification of unit electrical information.

Plug Configurations

NOTE: Receptacle not supplied by Hatco.

Electrical Rating Chart — HZMH-XX Models (Horizontal Single Shelf)

Overhead

Model Voltage Watts Amps

HZMH-24 120 750 6.3 2 NEMA 5-15P

HZMH-30 120 1350 11.3 4 NEMA 5-15P

HZMH-36 120 1400 11.7 4 NEMA 5-15P

HZMH-42 120 1450 12.1 4 NEMA 5-20P

HZMH-48 120 1500 12.5 4 NEMA 5-20P

HZMH-54 120 2100 17.5 6 NEMA 5-30P

HZMH-60 120 2150 17.9 6 NEMA 5-30P

Zones Plug Configuration

SPECIFICATIONS

Electrical Rating Chart — HZMH-XXD Models (Horizontal Dual Shelf)

Model Voltage Watts Amps

HZMH-24D 120 1500 12.5 4 NEMA 5-20P

HZMH-30D 120/208–240 2700 11.3 8 NEMA L14-20P

HZMH-36D 120/208–240 2800 11.7 8 NEMA L14-20P

HZMH-42D 120/208–240 2900 12.1 8 NEMA L14-20P

HZMH-48D 120/208–240 3000 12.6 8 NEMA L14-20P

HZMH-54D 120/208–240 4200 17.6 12 NEMA L14-30P

HZMH-60D 120/208–240 4300 18.0 12 NEMA L14-30P

Form No. HZMM-1116

Overhead

Zones Plug Configuration

5

SPECIFICATIONS

Electrical Rating Chart — HZMS-XX Models (Slanted Single Shelf)

Overhead

Model Voltage Watts Amps

HZMS-24 120 750 6.3 2 NEMA 5-15P

HZMS-30 120 1350 11.3 4 NEMA 5-15P

HZMS-36 120 1400 11.7 4 NEMA 5-15P

HZMS-42 120 1450 12.1 4 NEMA 5-20P

HZMS-48 120 1500 12.5 4 NEMA 5-20P

HZMS-54 120 2100 17.5 6 NEMA 5-30P

HZMS-60 120 2150 17.9 6 NEMA 5-30P

Electrical Rating Chart — HZMS-XXD Models (Slanted Dual Shelf)

Model Voltage Watts Amps

HZMS-24D 120 1500 12.5 4 NEMA 5-20P

HZMS-30D 120/208–240 2700 11.3 8 NEMA L14-20P

HZMS-36D 120/208–240 2800 11.7 8 NEMA L14-20P

HZMS-42D 120/208–240 2900 12.1 8 NEMA L14-20P

HZMS-48D 120/208–240 3000 12.6 8 NEMA L14-20P

HZMS-54D 120/208–240 4200 17.6 12 NEMA L14-30P

HZMS-60D 120/208–240 4300 18.0 12 NEMA L14-30P

Zones Plug Configuration

Overhead

Zones Plug Configuration

English

Factory Setpoints—Horizontal Shelf Models

Horizonal shelf models are pre-set at the factory to the following
setpoints. The setpoints are the same for each shelf on dual
units.

Hardcoat Shelf Heating Elements:

Setpoint Temperature = 180°F (82°C)
Stand-By Power Percentage = 50% of full wattage

Overhead Ribbon Heating Elements

Power Percentage = 75% of full wattage

Factory Setpoints—Slanted Shelf Models

Slanted shelf models are pre-set at the factory to the following
setpoints. The setpoints are the same for each shelf on dual
units.

Hardcoat Shelf Heating Elements:

Setpoint Temperature = 180°F (82°C)
Stand-By Power Percentage:
Front Element = 50% of full wattage
Rear Element = 0% of full wattage

Overhead Ribbon Heating Elements

Power Percentage:
Front Element = 75% of full wattage
Rear Element = 50% of the front overhead heating element’s

Power Percentage.

6

Form No. HZMM-1116

English

HZMH — Single Shelf

Front

View

Side
View

Front View

Side View

HZMH — Dual Shelf

A

D

E

D

E

B

C

F

F

F

A B

C

G

G

Overall Dimensions — HZMH Models

SPECIFICATIONS

Width

Model

HZMH-24 26-11/16″

HZMH-30 32-11/16″

HZMH-36 38-11/16″

HZMH-42 44-11/16″

HZMH-48 50-11/16″

HZMH-54 56-11/16″

HZMH-60 62-11/16″

HZMH-24D 26-11/16″

HZMH-30D 32-11/16″

HZMH-36D 38-11/16″

HZMH-42D 44-11/16″

HZMH-48D 50-11/16″

HZMH-54D 56-11/16″

HZMH-60D 62-11/16″

(A)

(677 mm)

(829 mm)

(982 mm)

(1134 mm)

(1286 mm)

(1439 mm)

(1591 mm)

(677 mm)

(829 mm)

(982 mm)

(1134 mm)

(1286 mm)

(1439 mm)

(1591 mm)

Depth

(B)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

28-9/16″

(725 mm)

Height

(C)

21-7/8″

(555 mm)

21-7/8″

(555 mm)

21-7/8″

(555 mm)

21-7/8″

(555 mm)

21-7/8″

(555 mm)

21-7/8″

(555 mm)

21-7/8″

(555 mm)

32-7/8″

(835 mm)

32-7/8″

(835 mm)

32-7/8″

(835 mm)

32-7/8″

(835 mm)

32-7/8″

(835 mm)

32-7/8″

(835 mm)

32-7/8″

(835 mm)

Footprint
Width (D)

27-15/16″
(709 mm)

33-15/16″
(861 mm)

39-15/16″

(1013 mm)

45-15/16″

(1166 mm)

51-15/16″

(1318 mm)

57-15/16″

(1471 mm)

63-15/16″

(1623 mm)

27-15/16″
(709 mm)

33-15/16″
(861 mm)

39-15/16″

(1013 mm)

45-15/16″

(1166 mm)

51-15/16″

(1318 mm)

57-15/16″

(1471 mm)

63-15/16″

(1623 mm)

Footprint
Depth (E)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

Shelf

Height (F)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

9-1/2″

(242 mm)

Control Box

Width (G)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

Form No. HZMM-1116

7

SPECIFICATIONS

HZMS — Single Shelf

Rear
View

Side

View

Rear View

Side View

HZMS — Dual Shelf

A

D

E

D

E

B

C

F

A

B

C

F

F

G

G

Overall Dimensions — HZMS Models

English

Width

Model

HZMS-24 26-11/16″

HZMS-30 32-11/16″

HZMS-36 38-11/16″

HZMS-42 44-11/16″

HZMS-48 50-11/16″

HZMS-54 56-11/16″

HZMS-60 62-11/16″

HZMS-24D 26-11/16″

HZMS-30D 32-11/16″

HZMS-36D 38-11/16″

HZMS-42D 44-11/16″

HZMS-48D 50-11/16″

HZMS-54D 56-11/16″

HZMS-60D 62-11/16″

(A)

(677 mm)

(829 mm)

(982 mm)

(1134 mm)

(1286 mm)

(1439 mm)

(1591 mm)

(677 mm)

(829 mm)

(982 mm)

(1134 mm)

(1286 mm)

(1439 mm)

(1591 mm)

Depth

(B)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

28-3/16″

(715 mm)

Height

(C)

21-3/4″

(551 mm)

21-3/4″

(551 mm)

21-3/4″

(551 mm)

21-3/4″

(551 mm)

21-3/4″

(551 mm)

21-3/4″

(551 mm)

21-3/4″

(551 mm)

32-3/4″

(831 mm)

32-3/4″

(831 mm)

32-3/4″

(831 mm)

32-3/4″

(831 mm)

32-3/4″

(831 mm)

32-3/4″

(831 mm)

32-3/4″

(831 mm)

Footprint
Width (D)

27-15/16″
(709 mm)

33-15/16″
(861 mm)

39-15/16″

(1013 mm)

45-15/16″

(1166 mm)

51-15/16″

(1318 mm)

57-15/16″

(1471 mm)

63-15/16″

(1623 mm)

27-15/16″
(709 mm)

33-15/16″
(861 mm)

39-15/16″

(1013 mm)

45-15/16″

(1166 mm)

51-15/16″

(1318 mm)

57-15/16″

(1471 mm)

63-15/16″

(1623 mm)

Footprint
Depth (E)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

19″

(483 mm)

Shelf

Height (F)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

9-5/16″

(237 mm)

Control Box

Width (G)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

18″

(457 mm)

8

Form No. HZMM-1116

English

Zone Divider

Sensor Location

Sensor Location

Sensor Location

Sensor Location

Sensor Location

Sensor Location

Sensor Location

Sensor Location

Zone

1

Zone

2

Zone

4

Zone

3

Front of Unit

Rear of Unit

Zone numbering starts at the front left side,

goes front-to-back, then moves

to the right and continues front-to-back.

ABA

Overhead View of Shelf

B

21-3/4"

(552 mm)

Shelf and Zone Dimensions

SPECIFICATIONS

Interior Shelf

Model

24″ Models

30″ Models

36″ Models

42″ Models

48″ Models

54″ Models

60″ Models

NOTE:24″ (610mm)models donothave azonedivider.

30″to48″(762–1219mm) models have a single
zone divider. 54″ and 60″ (1372 and 1524 mm)

models have two zone dividers.

Width (A)

24″

(610 mm)

30″

(762 mm)

36″

(914 mm)

42″

(1067 mm)

48″

(1219 mm)

54″

(1372 mm)

60″

(1524 mm)

Zone

Width (B)

20-1/16″

(510 mm)

12-5/16″

(314 mm)

15-5/16″

(390 mm)

18-5/16″

(465 mm)

21-5/16″

(543 mm)
15-13/16″

(402 mm)
17-13/16″

(453 mm)

Overhead Zone Identification

Shelf and Zone Dimensions

Form No. HZMM-1116

Top View of Shelf for Overhead Zone Identification (four zone shelf shown)

9

INSTALLATION

WARNING

Product Divider Rod

Channel Divider

Glass Side Panel
swung open.

English

General

Hatco Heated Zone Merchandisers are shipped with most
components pre-assembled. Care should be taken when
unpacking shipping carton to avoid damage to the unit and
components enclosed.

ELECTRIC SHOCK HAZARD: Unit is not weatherproof.
Locate unit indoors where ambient air temperature is a
minimum of 70°F (21°C).

FIRE HAZARD: Install unit with a minimum of 3″ (76 mm) of
space from rear of unit to a back wall. If safe distances are
not maintained, discoloration or combustion could occur.

CAUTION

Locate unit at proper counter height in an area that is
convenient for use. Location should be level to prevent
unit or its contents from falling accidentally and strong
enough to support the weight of the unit and contents.

NOTICE

Do not lay unit on front or back side. Damage to unit could
occur.

Do not locate unit in area with excessive air movement
around unit. Avoid areas that may be subject to active air
movements or currents (i.e., near exhaust fans/hoods, air
conditioning ducts, and exterior doors).

NOTE: Due to the size and weight of Heated Zone

Merchandisers, installation of a unit will require two or
more people.

1. Remove the unit from the carton.

NOTE: To prevent delay in obtaining warranty coverage,

complete online warranty registration. See the
IMPORTANT OWNER INFORMATION section for
details.

2. Remove tape and protective packaging from all surfaces
of the unit.

3. Place the unit in the desired location.

• Locate the unit in an area where the ambient air

temperature is constant and a minimum of 70° F
(21° C). Avoid areas that may be subject to active air
movements or currents (i.e., near exhaust fans/hoods,
air conditioning ducts, and exterior doors).

• Make sure the unit is at the proper counter height in an

area convenient for use.

• Make sure the countertop is level and strong enough to

support the weight of the unit and food product.

• Make sure the feet on the bottom of the unit are

positioned securely on the countertop.

4. Install the product divider rods into the channel dividers,
if desired. The rods can be adjusted easily to separate
holding areas as needed.

Installing Product Divider Rods

5. Install any accessories that came with the unit. Refer to the
OPTIONS AND ACCESSORIES section for details.

6. Plug the unit into a properly grounded electrical receptacle
of the correct voltage, size, and plug configuration. See the
SPECIFICATIONS section for details.

10

Form No. HZMM-1116

English

WARNING

Display

Power I/O (on/off) Switch

Warning
Light

LCD Controller

CAUTION

OPERATION

General

Heated Zone Merchandisers are setup at the factory for
energy-saving, automatic operation (Sensors ON operation).
Refer to “Factory Setpoints” in the SPECIFICATIONS section
for factory setpoint information. Use the following information
and procedures to operate a Heated Zone Merchandiser.

Read all safety messages in the IMPORTANT SAFETY
INFORMATION section before operating this equipment.

Do not place food product directly onto hardcoat surface.
Food product must be wrapped, boxed, or on a food pan.

NOTICE

Do not slide pans across hardcoat surface, use rough­bottomed pans, or drop anything on hardcoat surface.
Scratching may occur. Damage to hardcoat surface
caused by misuse is not covered under warranty.

Theory of Operation

The Heated Zone Merchandiser is designed for efficient and
environmentally-friendly operation by heating specific “zones”
only when product is present. The operation of the Heated Zone
Merchandiser is controlled by a series of optical sensors and
the LCD controller. The sensors are located along the sides
of each hardcoat shelf. Larger units have additional sensors
located in zone dividers that separate each shelf into multiple
overhead heat zones.

For all sizes of units, each hardcoat shelf is equipped with
separate front and rear heating elements. These two elements
operate independently during Sensors ON operation.

The number of overhead ribbon heating elements is determined
by the size of the unit. The overhead elements above each
hardcoat shelf are considered individual heat zones. This
means that the number of zones on each shelf is either two,
four, or six—depending on the size of the unit. Each overhead
element operates independently during Sensors ON operation.

NOTE: Each shelf on a dual shelf Heated Zone Merchandiser

can be set to a different operating mode.

Sensors ON Operation
At startup in Sensors ON operation, all shelf heating elements

and overhead heating elements in an empty Heated Zone
Merchandiser will be in Stand-By. The front and rear shelf
elements will heat at their Stand-By power percentage to the
setpoint temperature. All overhead elements remain off. When
product is placed on a shelf, the optical sensors signal the LCD
controller, and the controller activates the appropriate shelf
elements and overhead elements. Each of the shelf elements
affected by the placement of product will heat at full wattage
to the setpoint temperature. Each of the overhead elements
affected by the placement of product will heat at its setpoint
power percentage. All affected elements will remain activated
until all product is removed from the “zone.” Anytime a zone is
emptied of product, the zone will return to Stand-By.

Sensors OFF Operation
At startup in Sensors OFF operation, all shelf heating elements

will heat at full wattage to the setpoint temperature, and all
overhead heating elements will heat at their setpoint power
percentage. All shelf elements will remain at full wattage and
all overhead elements will remain at their setpoint power
percentage the entire time the unit is on.

Lights Only Operation
At startup in Lights Only operation, all shelf heating elements

and overhead heating elements are disabled. Only the LED
lights above each shelf will illuminate. This mode provides
ambient lighting for the display of non-heated product.

Startup

1. Move the Power I/O (on/off) switch to the I (on) position.

• The LED lights will illuminate.

• The LCD controller will startup. After the startup screens
and during operation, the display will cycle through the
overhead heat zones showing their current status and
temperature.

• Sensors ON = All shelf elements will heat at Stand-By
power percentage to the setpoint temperature. All
overhead elements remain off.

Sensors OFF = All shelf elements will heat at full wattage

to the setpoint temperature. All overhead elements will
heat at their setpoint power percentage.

Lights Only = All heating elements are disabled—for

ambient lighting only.

HZM Series Control Panel

NOTE: If the warning light comes on at any time, the unit is

overheating/malfunctioning. Turn off and unplug the
unit. Contact an Authorized Service Agent or Hatco for
assistance.

BURN HAZARD: Some exterior surfaces on unit will get
hot. Use caution when touching these areas.

2. When unit is at operating temperature, place pre-heated,

wrapped food product onto the desired shelf.

• Sensors ON = The optical sensors will signal the LCD
controller, and the controller will activate the appropriate
zone(s).

3. Continue to load and empty the shelves on the unit as

desired.

• Sensors ON = The various zones in the unit will adjust
automatically to the levels of product on the shelves—
ensuring maximum efficiency.

NOTE:Tochangetheshelfsetpointtemperature(s),operating

mode, or the element power percentages, refer to the
appropriate procedure in this section.

Shutdown

1. Move the Power I/O (on/off) switch to the O (off) position.

All LED lights, heating elements, and the LCD controller
will shut off.

Form No. HZMM-1116

11

OPERATION

Display

(Main Screen

shown)

Up Arrow

Key

Down Arrow

Key

Enter

Key

Sensor-activated,

Sensor-activated,

Sensor-activated,

English

IMPORTANT NOTES:

Each of the following programming functions is separated
into specific procedures for each model.

Detailed flow charts showing the screen layout of the LCD
controller for both slanted and horizontal models are available
in this section of this manual.

Close-Up View of LCD Controller

NOTE: Inactivity for five seconds at any level of programming

will cause the LCD controller to save the current
parameters and return to the Main screen.

Changing Shelf Setpoint Temperature and
Operating Mode

Use one of the following procedures to change the setpoint
temperature for the hardcoat shelf heating elements (front and
rear) as well as the operating mode for each shelf.

If necessary, refer to “Theory of Operations” at the beginning
of the OPERATION section for a description of each operating
mode.

NOTE: Press and hold the key for three seconds at any

time during programming to save settings and return to
the Main screen.

Horizontal and Slanted Single Shelf Models

1. From the Main screen, press the + keys. The
Lower Shelf Setpoint screen will appear:

lehSrwLf

3. Wait five seconds, or press and hold the key for three
seconds to save the desired setting and return to the Main
screen.

• The Parameters Saved screen will appear to confirm the

changes, and the display will return to the Main screen:

Pa sretemar
Sa dev

Horizontal and Slanted Dual Shelf Models

1. From the Main screen, press the + keys. The
Lower Shelf Setpoint screen will appear:

lehSrwLf

• Press the key to increase setpoint value.

• Press the key to decrease setpoint value.

2. Press the key. The Lower Shelf Zones screen will
appear and show the active operating mode:

lehSrwLf

nesosrS

• Press the or key to toggle between operating

modes. There are three available operating modes:

lehSrwLf

nesosrS

rwL
nesosrS

rwL

Li ylOnsthg

ON

lehSf

OFF

lehSf

onesZ

onesZ

onesZ

3. Press the key. The Upper Shelf Setpoint screen will
appear:

Up rp

• Press the key to increase setpoint value.

onesZ

ON

zone-specific
operation.

All elements on full-time.

Lights only. No heat.

lehSf

• Press the key to increase setpoint value.

• Press the key to decrease setpoint value.

2. Press the key. The Lower Shelf Zones screen will
appear and show the active operating mode:

lehSrwLf

nesosrS

onesZ

ON

• Press the or key to toggle between operating

modes. There are three available operating modes:

lehSrwLf

Li ylOnsthg

nesosrS

rwL
nesosrS

rwL

onesZ

ON

lehSf

onesZ

OFF

lehSf

onesZ

zone-specific
operation.

All elements on full-time.

Lights only. No heat.

• Press the key to decrease setpoint value.

4. Press the key. The Upper Shelf Zones screen will
appear and show the active operating mode:

Up rp

nesosrS

lehSf

ON

onesZ

• Press the or key to toggle between operating

modes. There are three available operating modes:

Up rp

nesosrS

Up rp

nesosrS

Up rp

Li ylOnsthg

12

lehSf

ON

lehSf

OFF

lehSf

onesZ

zone-specific
operation.

onesZ

onesZ

All elements on full-time.

Lights only. No heat.

Form No. HZMM-1116