Installation & Service Manual
Contents
1. 13 Anti Sweat Replacement 14 Discharge Air Grid Anti Sweat End Cases NMWE NMWEE 14 Discharge Air Grid Anti Sweat Center Riser all models 14 Defrost Heater Replacement 15 Parts Information Cladding and Optional Trim Parts Lists 16 NMW erre DATES Ca ES 16 NMWE esce te UR e CN de DAL NUN STEG 18 NMWEE a ek ur e eT ac aha ngi 20 Operational Parts List 22 TYLER Warranty See General UL NSF 155 Manual The following Medium Temperature Island Fresh Meat Merchandiser models are covered in this manual MODEL DESCRIPTION NMW 6 8 amp 12 ISLAND MEAT MERCHANDISER WITHOUT ENDS NMWE 9 11 amp 15 ISLAND MEAT MERCHANDISER WITH ONE END NMWEE 12 14 amp 18 ISLAND MEAT MERCHANDISER WITH BOTH ENDS November 2000 Page 3 NMW NMWE NMWEE Tyler Refrigeration SPECIFICATIONS NMW NMWE NMWEE Island Fresh Meat Merchandiser Specification Sheets Refrigeration Data CAPACITY IFT MODEL LENGTH PARALLEL CONVENTIONAL 6 8 12 _ MED TEMP 907 1 020 0 8 18 NA 047 NMWE 9711715 MEDTEMP __829 _ 933 10 8 18 042 NMWEE 12 14 18 me TEMP 852 95 C 10v 8 418 040 For sizing all refrigeration equipment other than TYLER use conventional BT2. 1 Remove screws and card molding 1 from rear riser 2 2 Remove screws riser cap trim 3 and insu lation 4 from rear riser 2 3 Disconnectanti sweat wires from case wires 4 Remove and replace aluminum tape and defective anti sweat heater 5 in top of rear riser 2 Page 14 November 2000 Installation amp Service Manual NMW NMWE NMWEE Defrost Heater Replacement WARNING Always shut off electricity to case before replacing a defrost heater Automatic cycling of fans or electrical power to wire ends could cause personal injury and or death 1 Remove screens and bottom trays from case HS 3 1 2 2 Disconnect defrost heater plug 1 from junction block 2 3 Remove screws and lift up coil cover 3 4 Remove defective defrost heater 4 from mounting clips 5 and case 5 Install new defrost heater 4 and reinstall coil cover 3 in reverse order 6 Replace bottom trays and screens in case Restore electrical power to case November 2000 Page 15 NMW NMWE NMWEE PARTS INFORMATION Cladding and Optional Trim Parts Lists Item Description A W N HW N N HE H H o MU N Riser J oint Trim Screw Riser Lower J oint Trim Screw per side Glass J oint Trim Screw per trim Color Band Painted Color Band Backer Painted Bumper End Trim Screw per cladding joint trim
3. The following wiring diagrams on pages 8 and 9 will cover the NMW NMWE NMWEE case circuits with electric and gas defrost Page 7 CASE REAR DISCHARGE AIR RIGHT END CASE DISCHARGE ANTI SWEAT HEATER AIR ANTI SWEAT HEATER AGRAM WRG NM E E OC OR ELEC DFR 9036870 FINISHED PART AFTER LI LEFT END CASE DISCHARGE AIR ANTI SWEAT HEATER li RARA AAA LALA A LALA CASE FRONT DISCHARGE AIR ANTI SWEAT HEATER FABRICATED X 1 DEG MODEL CASE FAN MOTORS 6 48 2FAN MOTORS 12 3 FAN MOTORS FAN MOTORS OPT I ONAL SOLENOID VALVE OPTIONAL END CASE DEFROST HENTER OPTIONAL DEFROST LIMIT THERMOSTAT OPEN SO F CLOSE 30 F DEFROST HEATERS OPTIONAL DEFROST T LIMIT THERMOSTAT OPEN 50 F CLOSE 30 F OPTIONAL CASE DEFROST HEATERS r WWIGKMIWI KIKI A _ OPTIONAL DEFROST LIMIT THERMOSTATS OPEN SO F CLOSE 30 F IDECIMALS 030 ANGLES A REVISED NSF csc FAN PANEL OPTIONAL END CASE DEFROST HEATER OPTIONAL CASE se TEMPERATURE m THERMOSTAT SUPPLY zi 220VAC 50HZ 120 60HZ INTERNATIONAL SUPPLY OR NOTE ALL CASES MUST BE GROUNDED 220VAC 50HZ INTERNATIONAL Page 8 November 2000 HA E HG DFR LAGRAM NW 9036871 EE CASE REAR DISCHARGE AIR RIGHT END CASE DISCHARGE ANTI SWEAT HEATER AIR ANTI SWEAT HEATER D DM D c 24702 LEFT END CASE DISCHARGE AIR ANT
4. 5215379 9025959 2 5612692 2 9025982 4 9027501 2 5205439 2 5952796 2 5205439 4 5227395 2 5145036 2 9031453 4 5048626 6 9028394 4 9025833 16 9028404 4 9027492 5048626 4 9025820 9025833 12 9020967 9027496 2 November 2000 NMW NMWE NMWEE Installation amp Service Manual Page 19 November 2000 NMW NMWE NMWEE Item Description DU N 10 11 12 13 14 15 16 17 18 12 Color Band Backer Painted Bumper Backer 14 qty 2 18 qty 4 Cladding J oint Trim Screw per cladding joint trim Glass J oint Trim Screw per glass joint trim Color Band Painted 9028407 2 Bumper per Side Bumper Retainer 9028397 2 Screw per bumper retainer 9025833 24 Front Cladding Painted 9023134 2 Screw per cladding side 5048626 10 Screw per base side joint trim 5205439 4 Screw per lower base joint trim 5145036 2 Lower Base J oint Trim 5227395 4 Base Side Panel J oint Trim 5952796 4 End Case Front Cladding Painted 9027492 2 Screw per end case front cladding 5048626 4 9025820 2 End Case Front Bumper End Case Front Bumper Retainer Screw per end case front bmpr rtnr 9025833 12 End Case Front Color Band Painted 9020967 2 Lower Corner Trim Assembly Painted 9027496 4 Corner Glass Trim Assy per corner Page 20 Tyler Refrigeration NMWEE 14 9025982
5. 97 2 25 4 25 4 5 4 13 8 25 4 5 4 20 6 25 4 1 TG 30 TG 30 TG 40 TG 50 TG 30 30 TG 30 30 30 TG 30 30 30 NMWEE N A 33 0 38 0 34 0 3 PH TG 3 40 TG 3 50 TG 3 40 Defrost Data EPR JET DEFROST WATER DEFROSTS DURATION mur LB FT DAY DEFROST TYPE PER DAY TIME MIN CF PSI NMW NMWE NMWEE TIME OFF L 4 40 ELECTRIC 4 40 50 HOTGAS 4 20 55 If an Electronic Sensor is used for termination it should be set at 70 F termination temperature The sensor must be located in the same location as the defrost termination klixon for that defrost type Set EPR to give this pressure at the case CASE TO CASE SUCTION LINE SUB FEED BRANCH LINE SIZING 6 e e far 12 e 18 22 26 30 3 3 42 NuW 5 8 58 NA NA 7 8 NA NA NA NA NA NA NA NA NA NMWE NA NA se ve NA Na 78 NA NA NA NA NA NMWEE NA NA NA 56 se na ze ve ve 118 11 87 UL SANITATION approved in accordance with ANSI NSF 7 CASE BTUH REQUIREMENTS are calculated to produce approximately the indicated entering air temperature with absolute maximum operating ambient limits of 75 F amp 55RH The information contained herein is based on technical data and tests that we believe are reliable and is intended for use by persons having technical skill at their own disc
6. Tyler Refrigeration Domestic 115 Volt 60 Hertz 8 5125532 5 Watt 5227302 5962268 9041077 9025002 8 Watt 5223396 9025005 5124216 2 5124521 5125211 9023503 9023508 5967100 12 5125532 5 Watt 5227302 5962268 9041077 9025002 8 Watt 5223396 9025005 5124217 2 5124522 5125211 9023503 9023508 5967100 End Case 5125532 5 Watt 9036378 5962269 9041077 9025002 8 Watt 5223891 9025005 5136615 5109046 5125211 9023503 9023508 5967100 For information on operational parts not listed above contact the TYLER Service Parts Department Page 22 J anuary 2006
7. bracket assembly and secure with two screws NOTE The product thermometer must always be located at the end on the left side of the case Center and End Discharge Air Honeycombs 1 Remove screws and grid retainer assembly NOTE Note position of honeycomb grid sections during removal so they can be reinstalled the same way Page 10 Tyler Refrigeration 2 Remove honeycomb grid sections from the discharge air duct CAUTION Improper installation of the honeycomb grid sections could result in improper air flow and or poor refrigeration 3 After cleaning replace honeycomb grid sections as they were removed and secure with grid retainer assembly and Screws Center and End Discharge Duct Panels 1 Remove product screens and bottom trays see this page 2 Remove all mounting screws and rear and end discharge duct panels from case 3 After cleaning replace in reverse order Perimeter Cladding 1 Remove all mounting screws upper cladding joint trims and lower corner trim assemblies from case 2 Remove mounting screws and bumper corner trim from case corners 3 Remove color bands bumpers and hand raillbumper retainers from case See General UL NSF 155 Manual 4 Remove mounting screws and front cladding from sides of case 5 Remove mounting screws and end clad ing from case ends 6 After cleaning replace in reverse order Base Side and Base End Panels 1 Remove all mounting screws lo
8. fan blade 4 from fan motor shaft 6 Discard spring clip or nut 5 Remove three screws fan bracket plate 4 NOTE and mounting brackets 5 from fan motor assembly 2 Center and end fan blades are not inter changeable Each location requires specific blades for proper case operation November 2000 Page 13 NMW NMWE NMWEE Tyler Refrigeration NOTE 5 Connectthe anti sweat wires to the case If replacement blades and or motor are not wires and reinstall the insulation 4 available unplug motor and cover opening 6 Install the riser cap trim 3 and card until the replacement parts are available molding 1 and secure with screws 6 Replace new fan motor assembly in reverse Discharge Air Grid Anti Sweat order Center Riser all models Anti Sweat Replacement se WARNING 2 gt Shut off disconnect power supply to case 3 before changing an anti sweat Electrical power from wire ends could damage other 4 components and or cause personal injury or death 5 6 Discharge Air Grid Anti Sweat End Cases NMWE NMWEE 1 Remove screws 1 center riser trim 2 and insulation 3 from top of the center riser 4 2 Disconnectanti sweat wires from case wires 3 Remove and replace the aluminum tape 4 and the anti sweat heater 5 in top of the center riser 3 4 Connectthe anti sweat wires to the case wires and reinstall the insulation 2 5 Install center riser trim 2 with screws 1
9. 2 18 9025982 4 color per order 9027501 2 5205439 2 9025959 4 5612692 2 9028403 4 color per order 9028393 4 9025833 14 9023175 4 5048626 9 5205439 4 5145036 2 5227395 4 5952796 4 9027492 2 5048626 4 color per order 9025820 2 9025833 12 9020967 2 9027496 4 color per order 9027501 2 5205439 2 9025959 4 5612692 2 9028405 4 9028395 4 9025833 18 9023173 4 5048626 8 5205439 4 5145036 2 5227395 4 5952796 4 9027492 2 5048626 4 9025820 2 9025833 12 9020967 2 9027496 4 November 2000 NMW NMWE NMWEE Installation amp Service Manual Page 21 November 2000 NMW NMWE NMWEE Operational Parts List Case Usage Electrical Circuit Case Size 6 Fan Motor 5125532 5 Watt Fan Blades 7 30 5B NMW 5227302 7 15 5B NMWE NMWEE 2224 Fan Motor Brackets 5962268 Fan Bracket Plate all fans 9041077 Opt ECM Fan Motor 9025002 8 Watt Opt ECM Fan Blades 5223396 7 20 5B NMW 7 15 5B NMWE NMWEE Opt ECM Fan Motor Brackets 9025005 Anti Sweat Heater discharge air 5227379 2 Opt Elec Def Heater 5125153 Opt Elec Def Limit Switch 5125211 50 30 klixon Opt Gas Def Fan Delay Switch 9023503 50 40 klixon Opt Gas Def Term T stat 9023508 55 40 klixon NSF Product Thermometer 5967100
10. 7 Defrost Control Chart 7 Installation Procedure Check Lists See General UL NSF I amp S Man Wiring Diagrams 7 NMW NMWE NMWEE Domestic amp Export 50Hz Case Circuits 8 Cleaning and Sanitation See General UL NSF 155 Manual Component Removal and Installation Instructions for Cleaning 10 STEENS d e Sopa wA EE er WE UR 10 Bottom Trays ears 10 Perimeter Air Ducts 10 NSF Product Thermometer 10 Center and End Discharge AirHoneycombs 10 Center and End Discharge Duct Panels 10 Perimeter Cladding 10 Base Side and End Panels 10 Page 2 November 2000 Installation amp Service Manual NMW NMWE NMWEE Page General Information NSF Product Thermometer Installation 11 Radiant Heat Information 11 Service Instructions Preventive Maintenance See General UL NSF I amp S Manual Color Band and Bumper Replacement See Gen UL NSF 155 Man Corner Trim Replacement 12 Perimeter Glass Replacement 12 Fan Blade and Motor Replacement 12 Fan Blade Replacement 13 Fan Motor Replacement
11. Cladding J oint Trim Bumper Front Cladding Painted Screw per cladding side Bumper Retainer Screw per bumper retainer Horizontal J oint Trim Base Side Panel J oint Trim Screw per base side joint trim Lower Base J oint Trim Screw per lower base joint trim Page 16 6 5225680 5048626 4 5227162 2 5048626 2 9025959 2 5612692 2 9020968 2 9025982 2 2 2 5205439 2 9027501 2 9025633 2 5048626 8 9025052 2 9025833 12 5215379 5952796 2 5205439 4 5227395 2 5145036 2 Tyler Refrigeration NMW 8 5225680 5048626 4 5227162 2 5048626 2 9025959 2 5612692 2 9020971 2 9025982 2 color per order 5205439 2 9027501 2 color per order 9025634 2 5048626 14 9025058 2 9025833 18 5215379 5952796 2 5205439 4 5227395 2 5145036 2 12 5225680 5048626 4 5227162 2 5048626 2 9025959 2 5612692 2 9020972 2 9025982 2 5205439 2 9027501 2 9025635 2 5048626 18 9025061 2 9025833 24 5215379 5952796 2 5205439 4 5227395 2 5145036 2 November 2000 Installation amp Service Manual NMW NMWE NMWEE November 2000 Page 17 NMW NMWE NMWEE Item Description 10 11 12 13 14 15 16 17 18 19 Riser Top J oint Trim Screw Riser Lower J oint Trim Screw per side Horiz
12. I SWEAT HEATER DMM 1 DEG s CASE FRONT DISCHARGE AIR ANTI SWEAT HEATER MODEL END CASE FAN MOTOR CASE FAN MOTORS 6 amp B 2FAN MOTORS END CASE 12 3 FAN MOTORS FAN MOTORS 030 ANGLES 8 8 a a gt r4 PIDECIMALS HOT GAS DEFROST FAN LIMIT THERMOSTAT OPT IONAL OPEN 50 F CLOSE 40 F SOLENOID VALVE OPTIONAL CASE TEMPERATURE THERMOSTAT 120VAC 60HZ SUPPLY NOTE ALL CASES MUST BE GROUNDED 220 502 INTERNATIONAL November 2000 Page 9 NMW NMWE NMWEE CLEANING AND SANITATION Component Removal and Installation Instructions for Cleaning Screens 1 Remove product from screens 2 Push screens up until bottom screen tabs clear the holes in the front duct 3 Remove screens from holes in rear duct panels and from case 4 After cleaning replace in reverse order Bottom Trays 1 Remove product and screens from case See this page 2 Grasp and liftout each of the bottom trays from the case interior 3 After cleaning replace in reverse order Perimeter Air Ducts 1 Remove screens and bottom trays see this page 2 Lift out perimeter air duct sections and carefully remove from case 3 After cleaning replace in reverse order NSF Product Thermometer Remove two screws and product thermome ter bracket assembly from end left side perime ter air duct section After cleaning replace product thermometer
13. TYLER A umu Installation amp Service Manual Model NMWE Shown NMW NMWE NMWEE ISLAND FRESH MEAT MERCHANDISERS Medium Temperature Self Serve Display Cases This manual has been designed to be used in conjunction with the General UL NSF Installation amp Service Manual Save the Instructions in Both Manuals for Future Reference This merchandiser conforms to the American National Standard Institute amp NSF International Health and Sanitation standard ANSI NSF 7 2003 PRINTED IN Specifications subjectto REPLACES ISSUE PART IN U S A change without notice EDITION 1 04 DATE 1 06 No 9037154 REv B Tyler Refrigeration Niles Michigan 49120 NMW NMWE NMWEE Tyler Refrigeration CONTENTS Page Specifications NMW NMWE NMWEE Specification Sheets 4 Line Sizing Requirements See General UL NSF I amp S Manual Pre Installation Responsibilities See General UL NSF I amp S Manual Installation Procedures Carpentry Procedures 6 Case Pull Up Locations 6 Trim Installation Alignment See General UL NSF I amp S Manual Plumbing Procedures See General UL NSF I amp S Manual Refrigeration Procedures See General UL NSF I amp S Manual Electrical Procedures 6 Electrical Considerations 6 Defrost Information
14. UH values Evaporator temperature is defined as the saturated suction temperature leaving the case Air velocity measured 1 hour after defrost at the center riser discharge air duct using an ALNOR JR velometer with a scoop FOR SPECIFIC COMPRESSOR SIZING AND OR LINE SIZING INFORMATION REFER TO THE GOLD AND OR BUFF SECTIONS IN THE TYLER SPECIFICATION GUIDE DISCHARGE AIR AVG REF EVAPORATOR UNIT SIZING TEMPERATURE VELOCITY CHARGE CF LBSFT Electrical Data Fans and Heaters 120 and 208 Volt TOTAL TOTAL FIL DEFROST HEATER Sl ee em eee AMPS WATTS e s 540 1289 2 682 NMW 8 2 068 604 044 220 060 720 1375 2 860 NMW 12 3 102 906 066 330 090 1080 2063 4 290 NMWE 9 4 136 1208 088 440 066 788 1719 3 576 NMWE 11 4 136 1208 088 440 080 960 1805 3 754 NMWE 15 5 170 1510 110 550 110 1320 2492 5 184 NMWEE 12 6 204 1812 132 660 0 85 1020 2149 4470 NMWEE 14 6 204 1812 132 660 100 1200 2235 4 648 NMWEE 18 7 238 2114 154 770 130 1560 2922 6 078 Heaters 208 Volt 208 VOLT DEFROST AMPS Fr e sa o ir 12 14 15 18 22 26 30 3 4 RIM 13 0 13 0 17 8 186 20 6 35 4 4 PH TG 30 TG 30 TG 30 TG 30 TG 30 TG 50 NMWEE 22 6 23 4 30 2
15. and to eliminate product voids Case screens could be covered in some instances to keep the refrigerated air over the display CAUTION The quality damage done to meat products by high temperatures and or contamination during delivery cooler storage cutting and wrapping cannot be repaired by placing the products into properly operating dis play cases SERVICE INSTRUCTIONS Corner Trim Replacement 2 to 69F Voids in display raise surface temperature of package in front of void 2 to 69 F 1 Remove two screws 1 and lower corner trim assembly 2 from corner of the case 3 2 Remove two screws 4 two washers 5 and lift off the upper corner trim 6 3 Replace upper and lower corner trim in the reverse order Page 12 Tyler Refrigeration Perimeter Glass Replacement NOTE End cases require corner trim removal before replacing the glass See Corner Trim Replacement in this manual 1 Remove two screws 1 and glass joint trim 2 from both joints of the broken glass 2 Remove screws 3 and glass trim rail 4 from top of glass 5 3 Loosen rear retainer 6 and remove bro ken glass from glass retainer assembly 7 4 Apply sealant tape 8 to top and bottom edge of new glass 5 5 Position new glass 5 in glass retainer assembly 7 and secure by tightening rear retainer 6 6 Install glass trim rail 4 with screws 3 over top edge of new glass 5 7 Install
16. glass joint trim 2 with screws 1 over the joint areas of glass 5 Fan Blade and Motor Replacement WARNING Shut off or disconnect power supply to case before servicing a fan Automatic cycling of fan or electrical power to wire ends could cause personal injury and or death November 2000 Installation amp Service Manual NMW NMWE NMWEE Fan Blade Replacement 4 Install new fan blade 4 on fan motor shaft 6 and secure with new spring clip or new 1 Remove screens and bottom trays from 2 5 poe LU case 5 Replace center fan plenum bottom trays CAUTION and screens in case Electrical wiring to fan circuit is still con Fan Motor Replacement nected Careless removal could damage the wiring 1 Remove screens and bottom trays from case CAUTION Electrical wiring to fan circuit is still con nected Careless removal could damage 3 the wiring 1 2 If removing center fan motor turn thumb NC screws and carefully lift out the fan plenum Su A from under the center riser See illustration under Fan Blade Replacement on this I N page 2 If removing center fan blade turn thumb screws 1 and carefully lift out the fan plenum 2 from under the center riser 3 3 Remove fan harness clip and disconnect fan motor plug 1 for the defective fan 4 4 Remove three screws and lift out fan motor 3 To replace fan blade 4 remove spring clip a biacket assembly 2 trom fan plenum or nut 5 and
17. i sweat heaters are wired directly to the main power supply so they can operate at all times November 2000 Installation amp Service Manual Defrost Information See General UL NSF 155 Manual for operational descriptions for each type of defrost control Defrost Control C hart Defrost Defrost Defrosts Duration Term Type Per Day Min Temp Off Time 4 40 Electric 4 40 50 F Gas 4 20 55 F All kligons are located on the right end of the evaporator coils The diagram shows the location for each defrost type that uses a klixon AE NMW Front PLL LCOS NMWE END Rear E Electric Defrost Termination F D Gas Defrost Fan Delay NOTE The Gas Defrost Termination klixon is located on the bypass check valve CAUTION If electronic sensors are used in place of the klixons the sensors must be located in the same locations as the klixons for that defrost type Any other locations will effect the refrigeration efficiency of the case November 2000 NMW NMWE NMWEE 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
18. ontal J oint Trim Glass J oint Trim Screw per trim Color Band Backer Painted Bumper Backer Cladding J oint Trim Screw per cladding joint trim Base Side Panel J oint Trim Screw per base side joint trim Lower Base J oint Trim Screw per lower base joint trim Front Cladding Painted Screw per cladding side Bumper per side Bumper Retainer Screw per bumper retainer Color Band Painted End Case Front Cladding Painted Screw per end case front cladding End Case Front Bumper End Case Front Bumper Retainer Screw per end case front bmpr rtnr End Case Front Color Band Painted 9 5225680 5048626 4 5227162 2 5048626 2 5215379 9025959 2 5612692 2 9025982 2 9027501 5205439 5952796 5205439 5227395 5145036 9023173 5048626 9028395 2 9025833 18 9028405 2 9027492 5048626 4 9025820 9025833 12 9020967 Lower Corner Trim Assembly Painted 9027496 2 Bumper Corner Trim per corner Page 18 Tyler Refrigeration NMWE 11 5225680 5048626 4 5227162 2 5048626 2 5215379 9025959 2 5612692 2 9025982 2 color per order 9027501 5205439 5952796 5205439 5227395 5145036 9031452 5048626 2 2 2 4 2 2 2 8 pe color per order 9028396 2 9025833 22 9028406 2 9027492 5048626 4 color per order 9025820 9025833 12 9020967 9027496 2 color per order 15 5225680 5048626 4 5227162 2 5048626 2
19. retion and risk Since conditions of use are outside of Tyler s control we cannot assume any liability for results obtained or damages incurred through the applications of the data presented SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE Page 4 J anuary 2006 Installation amp Service Manual NMW NMWE NMWEE NMW NMWE NMWEE CROSS SECTION 6 7 9 1 32 1 2 NMW FLOOR PLAN 1 1 2 PV 411 4 5999 _________il_ Refrigeration 5 8 Suction 29 1 4 35 Base 72 1 4 Hi l d Bose _v Front of C 22 22 3 4 or 1 0 30 37 22 3 4 29 1 4 il 72 1 4 NMWE FLOOR PLAN 9 11 15 NMWE 87 1 2 NMWETT 111 1 2 15 159 1 2 6 8 12 Rear of Case 41 1 4 72 1 4 OA 3 4 or 6 NMWEE_FLOOR PLAN 41 1 4 72 1 4 OA ade 5 8 Suction 3 8 Liquid J anuary 2004 12 14 or 18 NMWEE12 103 NMWEE14 127 NMWEE18 178 6 8 or 12 29 1 4 Base Page 5 NMW NMWE NMWEE INSTALLATION PROCEDURES Carpentry Procedures Case Pull Up Locations A B C D The NMWEE models do not have any open ends therefore no pull ups are required All other NMW models have four pull ups at each open end of the case Pull
20. run higher than the circulated air temperature of the cases A dial thermometer stuck into the center of a piece of meat compared with one in the air stream quickly confirms this fact Another fact is that the surface temperature of the meat will be higher than the center tem perature due to radiant heat TYLER s ongo ing research identifies sources of radiant heat and accurately measures and records it These charts were developed from the infor mation gathered during this research Two major sources of radiant heat are from dis play lights and ceiling surfaces Additional heat sources come from bad display prac tices which either overload the case with product or allow voids in the product display Poor display practices impair the efficiency of the refrigeration adding to the surface tem perature of the meat Bacteria and molds grow when surface temperatures rise above 45 F This prematurely discolors displayed meats and causes unnecessary meat depart ment losses Radiant Heat Measurement Place two accurate dial thermometers side by side in a case Cover one of the thermometer stems with black friction tape The tempera ture difference is the approximate amount of radiant heat A change in display lighting or a reduction of high ceiling temperatures over 80 F could reduce the radiant heat in the case Page 11 NMW NMWE NMWEE Display Practices Encourage butchers to maintain all meat below the case load lines
21. ups A B C and D are located as shown and used for joining end cases All pull ups should be installed and tightened starting with A and finishing with D See General UL NSF 155 Manual for line up assembly and color band amp bumper installation instructions After all case pull ups have been secured install the bottom trays and the case screens Refrigeration Procedures See General UL NSF I amp S Manual for refrig eration procedure information Page 6 Tyler Refrigeration Electrical Procedures Electrical Considerations CAUTION Make sure all electrical connections are tight This prevents burning of electrical terminals and or premature component failure Case Fan Circuit This circuit is to be supplied by an uninter rupted 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 Anti Sweat Circuit NMW cases have two anti sweat heaters for the center discharge air grid NMWE cases have two anti sweat heaters for the center dis charge air grid and an additional anti sweat heater for the end case discharge air grid NMWEE cases have two anti sweat heaters for the center discharge air grid and two addi tional anti sweat heaters for the end case dis charge air grids Ant
22. wer base joint trim from case 2 Remove all mounting screws and base side panels from sides of case 3 Remove all mounting screws and base end panels from case ends 4 After cleaning replace in reverse order November 2000 Installation amp Service Manual GENERAL INFORMATION NSF Product Thermometer Installation 688 han was LEFT HAND OF DUCT 1 Remove end perimeter air duct section from left side of case 2 Measure and mark removed air duct section as shown Drill two 125 holes at marked locations Install product thermometer bracket assembly on air duct section with two screws Radiant Heat Information HEATING EFFECT OF VARIOUS TYPES OF LIGHTING AND INTENSITIES ON PACKAGED MEAT IN OPEN DISPLAY CASES HEAT ADDED TO MEAT SURFACE FROM LIGHT ALONE HEAT ADDED TO MEAT SURFACE FROM LIGHT ALONE 50 LIGHT LIGHTING INTENSITY IN FOOT CANDLES AT MEAT LEVEL November 2000 NMW NMWE NMWEE HOW CEILINGS OVER OPEN MEAT CASES AFFECT PACKAGED MEAT CEILING TEMPERATURE DEGREES F CEILING TEMPERATURE DEGREES F MEAT SURFACE TEMPERATURE RISE FROM RADIANT HEAT A wide temperature range is shown for each type of lighting This data does not show all situations Many situations will have higher package warm up figures than indicated It is generally known that the temperature of displayed meat in refrigerated cases will
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