Tyler Refrigeration N7DNL Supplement

Installation & Service
Manual
N7DNL, NHD(L/M)
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 - 2003.
PRINTED IN Specifications subject to REPLACES ISSUE PART
IN U.S.A. change without notice. EDITION DATE 6/07 NO. 9055758 REV. —
Tyler Refrigeration * Niles, Michigan 49120
EXTENDED HEIGHT MULTI-SHELF DAIRY/DELI/PRODUCE/JUICE
MERCHANDISERS
Medium Temperature Self Serve Display Cases

CONTENTS
N7DNL, NHD
Page 2 June, 2007
Page
Specifications
N7DNL Specification Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
NHDL/NHDM Specification Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pre-installation Responsibilities . . . . . (See General-UL/NSF I&S Manual)
Installation Procedures
Carpentry Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Case Pull-Up Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Joining Rear Load Cases to Coolers . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Plumbing Procedures . . . . . . . . (See General-UL/NSF I&S Manual)
Refrigeration Procedures . . . . . (See General-UL/NSF I&S Manual)
Defrost Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Defrost Control Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation Procedure Check Lists (See Gen.-UL/NSF I&S Manual)
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
N7DNL Domestic & Export (50 Hz) Case Circuits (8’ Cases) . . . . . . 9
N7DNL Domestic & Export (50 Hz) Case Circuits (12’ Cases) . . . . 10
NHD(L/M) Dom. & Export (50 Hz) Case Circuits (6’ & 8’ Cases) . . 11
NHD(L/M) Dom. & Export (50 Hz) Case Circuits (12’ Cases) . . . . . 13
Cleaning and Sanitation . . . . . . . . . . . (See General-UL/NSF I&S Manual)
Component Removal and Installation Instructions for Cleaning 15
Shelves and Shelf Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Bottom Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Front Air Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Rear Duct Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Discharge Air Honeycomb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Top Duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Front Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Stainless Steel Cleaning Methods . . . . . . . . . . . . . . . . . . . . . . . . 16

Page
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
NSF Product Thermometer Installation . . . . . . . . . . . . . . . . . . . . . 18
Egg Merchandiser Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Peg Bar Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Peg Bar Information for Cannon Magna Bar Peg Display Systems 20
Service Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Preventive Maintenance . . . . . . . (See General-UL/NSF I&S Manual)
Ballast and Lighting Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Defrost Heater Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Parts Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Operational Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Cladding and Trim Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
TYLER Warranty . . . . . . . . . . . . . . . . . (See General-UL/NSF I&S Manual)
The following Extended Height Medium Temperature, Multi-Shelf Dairy, Deli, Produce and
Juice Merchandiser models are covered in this manual:
MODEL DESCRIPTION
N7DNL 8’ & 12’ EXTENDED HEIGHT MED. TEMP. NARROW MERCHANDISER
WITH 18” FRONT
NHDL 6’, 8’ & 12’ EXTENDED HEIGHT MED. TEMP. MERCHANDISER
WITH 18” FRONT
NHDM 6’, 8’ & 12’ EXTENDED HEIGHT MED. TEMP. MERCHANDISER
WITH 22” FRONT
Installation & Service Manual N7DNL, NHD
June, 2007 Page 3

Page 4 April, 2008
SPECIFICATIONS
N7DNL Extended Height Narrow Multi-Shelf Medium Temp Merchandisers

April, 2008 Page 5