Tyler NSSD Supplément
Installation &&SService
Manual
NSSD
This manual has been designed to be used in conjunction with the General
(UL/NSF) Installation & Service Manual.
Save the Instructions in Both Manuals for Future Reference!!
This merchandiser conforms to the American National Standard Institute & NSF International Health and Sanitation standard ANSI/NSF 7 - 1999.
PRINTED IN Specifications subject to REPLACES ISSUE PART
IN U.S.A. change without notice. EDITION 3/02 DATE 10/02 NO. 9037171 REV. A
Tyler Refrigeration Corporation * Niles, Michigan 49120
THREE DECK MEAT/DELI/CRITICAL TEMP
PRODUCE MERCHANDISERS WITH CURVED FRONT GLASS
Medium Temperature Self Serve Display Cases
S P E C I A L T Y
P R O D U C T S
CONTENTS
NSSD Tyler Refrigeration
Page 2 March, 2002
Page
Specifications
NSSD Specification Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Line Sizing Requirements . . . . . . (See General-UL/NSF I&S Manual)
Pre-Installation Responsibilities . . . . . (See General-UL/NSF I&S Manual)
Installation Procedures
Carpentry Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Case Pull-Up Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Plumbing Procedures . . . . . . . . (See General-UL/NSF I&S Manual)
Refrigeration Procedures . . . . . (See General-UL/NSF I&S Manual)
Electrical Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Defrost Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Defrost Control Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation Procedure Check Lists (See Gen.-UL/NSF I&S Manual)
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
NSSD Domestic & Export (50Hz) Case Circuits . . . . . . . . . . . . . 8
Cleaning and Sanitation
Component Removal and Installation Instructions for Cleaning 12
Shelves and Shelf Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bottom Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Front Air Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Rear Duct Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Discharge Air Honeycomb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Front Lower Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Front Upper Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installation & Service Manual NSSD
Page 3March, 2002
Page
General Information
NSF Product Thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Radiant Heat Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Radiant Heat Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Display Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Service Instructions
Preventive Maintenance . . . . . . (See General-UL/NSF I&S Manual)
Light Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Ballast and Lighting Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Ballast Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Defrost Heater Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Fan Blade and Motor Replacement (See Gen.-UL/NSF I&S Manual)
Color Band and Bumper Replacement (See Gen.-UL/NSF I&S Man.)
Anti-Sweat Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Top Light Channel Anti-Sweat Replacement . . . . . . . . . . . . . . . . . 16
Front Curved Plexiglas Replacement . . . . . . . . . . . . . . . . . . . . 16
Parts Information
Operational Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cladding and Trim Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . 18
TYLER Warranty . . . . . . . . . . . . . . . . . (See General-UL/NSF I&S Manual)
The following Medium Temperature, Top Display Meat, Deli and Critical Temp Produce
Merchandiser models are covered in this manual:
MODEL DESCRIPTION
NSSD 6’, 8’ & 12’ CURVED GLASS FRONT 3-DECK MEAT/DELI
MERCHANDISER
NSSD Tyler Refrigeration
Page 4 October, 2002
SPECIFICATIONS
NSSD Three Deck Meat/Deli/Critical Temp Produce Merchandisers
Installation & Service Manual NSSD
Page 5
October, 2002
NSSD Three Deck Meat/Deli/Critical Temp Produce Merchandisers
NSSD Tyler Refrigeration
Page 6 March, 2002
INSTALLATION PROCEDURES
Carpentry Procedures
Case Line-Up
NOTE
The NSSD cases are shipped on casters that
are replaced with adjustable legs during
case line-up and installation.
See the “General-UL/NSF I&S Manual” for
the proper case line-up procedures.
Case Pull-Up Locations
All NSSD models have four pull-ups at each
end of the case. Pull-ups A, B, C and D are
located as shown and should be installed and
tightend starting with A and finishing with D.
See “General-UL/NSF I&S Manual” for line-
up assembly instructions.
Electrical Procedures
Electrical Considerations
CAUTION
Make sure all electrical connections at com-
ponents and terminal blocks are tight. This
prevents burning of electrical terminals
and/or premature component failure.
NOTE
The NSSD has two raceway locations that
can house the electrical wiring, components
and terminal blocks. All components and
wiring can be located in either the lower
front or the lower rear of the case.
Case Fan Circuit
This circuit is to be supplied by an uninterrupt-
ed, protected 120V circuit. The case fan circuit
is not cycled, except when equipped for gas
defrost. On gas defrost cases the fan circuit is
controlled by a 50/40 klixon.
NOTE
With gas defrost, the fans will not start until
the coil temperature reaches 40°F at the fan
delay thermostat.
Fluorescent Lamp Circuit
Case lighting is supplied by T-8 electronic
ballast lights. It is controlled by a light switch
in each case. The standard lighting is 1-row of
T-8 canopy lights. NSSD models also offer up
to 3 rows of optional T-8 shelf lights.
Anti-Sweat Heater Circuit
NSSD cases have three anti-sweat heaters.
One in the top light assembly, one in the front
glass trim rail and one in the front glass retain-
er. All anti-sweat heaters are wired directly to
the main power supply so they can operate at
all times.
Installation & Service Manual NSSD
March, 2002 Page 7
Defrost Information
See “General-UL/NSF I&S Manual” for
operational descriptions for each type of
defrost control.
Defrost Control Chart
Defrost
Defrost Defrosts Duration Term.
Type Per Day (Min) Temp.
Off Time 6 28 ----
Electric 6 36 50°F
Gas 6 12-15 55°F
E = Electric Defrost Termination
G = Gas Defrost (Fan Delay)
F/S = Electric Defrost Failsafe (Opt.)
NOTE
The termination klixon for gas defrost is
located at the bypass check valve at the
left end of the evaporator coil.
Most klixons are located on the right end of
the evaporator coil. The diagram shows the
location for each defrost type that uses a
klixon.
CAUTION
If electronic sensors are used in place of
the klixons, the sensors must be located in
the same location as the klixons for that
defrost type. Any other locations will
effect the refrigeration efficiency of the
case.
WIRING DIAGRAMS
ELECTRICIAN NOTE - OVERCURRENT
PROTECTION
120V circuits should be protected by 15 or 20 Amp
devices per the requirements noted on the cabinet
nameplate or the National Electrical Code, Canadian
Electrical Code - Part 1, Section 28. 208V defrost
circuits employ No. 12 AWG field wire leads for field
connections. On remote cases intended for end to
end line-ups, bonding for ground may rely upon the
pull-up bolts.
The following wiring diagrams on pages 8
thru 11 will cover the NSSD case circuits
including all defrost and lighting wiring
circuits.
Page 8 March, 2002
NSSD Domestic & Export (50Hz) Case Circuits (6’, 8’ & 12’ Cases)
March, 2002 Page 9
Page 10 March, 2002
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