Installation & Service Manual
Contents
1. x CANOPY LIGHTING WHT 9 BLU 1 BLU 3 LAMP 143 Qe T 8 TAP R T 8 E eel T 8 LAMP BALLAST 29 T 8 LIGHTING RED EU BEP BLK T BLU 3 LAMP 4 522 en B T 8 E pe LAMP heiu BALLAST BUR uzoo RED RED sue H NO E PE ae T8 BALLAST P28 oso a RED BLU BALLAST LB z TE Or 2 za g REMOTE SHELF EE 9 5 X GRN X BALLAST LOCATED IN CANOP Y V mr jum E di 2 RR z L M jJ u x WHT 2 GRN uz 2 i o Se 5 3 LAMP 1 4 LAMP 5 BALLAST BALLAST gG 6 BLK GRN RED BLK RED BLU Memes Y 5TH ROW TOP SHELF LIGHTS BALLAST AND 8 2 aN 1 HARNESS PTS sae BALLAST 15 KL NV MOUNTED ON LIGHT CHANNEL THE ATTACHED SOCKET COVERS MUST BE INSERTED IN EACH UNUSED SOCKET FOR LIGHTED SHELVES TO LIGHT CORRECTLY IN EACH COLUMN OPTIONAL SHELF LIGHTING 4 ROWS 12 SHELVES 5 ROWS 15 SHELVES i CONNECT TO FANS POWER SUPPLY i i i I I 220VAC i SOLENOID I VALVE i 1 1 I t 1 LI i OPTIONAL ELECTRONIC TEMPERATURE CONTROL FAN MOTORS 3 PER 12 CASES FAN PANEL OF GROUND NECI re a GSEFRON Rs DM ANE T 82. VSO ONY 03151 HO 2 4 1N 38 ONY NOILOAS 3 ASv Oddl S3SN S JSN 4SN ZJSN O3N LEVIN PETN 839 SECd3 9 vECd3 cd3 12 99 00Z d3 SQOHVOUNVIS H31AL 318vOl1ddVv 3H3HM VINA LINO ONIMOTIOS JHL LIIW LSNA S TvIra1VIW LNSNOdOO NOLLONN4 TV ILLIMO NV N3I SInO3N 5542044 NV ALSASAVS lvOLLIMO 3 333 9151510 ONIANMO LX3N dO 133HS 9L8S0E6 MASWNN 899 OVdHCGSN ONIMOLOVAONVIA 98M IAVSHOVIC 50506 4NO3 quu YAGWINN NOLLVZISOHIQY b F L T33ON THA313SV3l3M 9185086 HJ8IADN 80 11 90 War 80 1 1 90 1H9I3M mar joat s 3 Otid NI NMWHGSY Nd TVNOLLdO d3423H 4313v3Q 80 11 90 SNIN33NION3 SNIN33NION3 MOS OUS LAICUS MAEM CAEN AJY 40 RERRMARMMH EE LECCE EOM July 2007 NOLLvSOdMNOD 30 NOLLVZRHOHLDY LEHAA 3H1 LAOH LU z 13yd NI MO JIOHM NI SS3H1O O1 038072610 g3S n 38 LON TWHS ONY NOILYHOdHOD OL ANWLaIdOHd SI SNY 230 lt NI33H 1 Q3NIYLNOG NOLLV THOJNI SH LNSIWNS0d SIH1 NO S3oNV3STOL S3HONI NI 38 Y SNOISN3MIG QSONNOdD LSNA S339v5 TIY ALON NOLLO3l OSd 319NY OMIH L ueduio seifojouuoe parun v 293 431512398 ISIMYIHKLO SS31Nn _ a a uBise 73A37
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4. z 143 NOx i 2256 T7 dE AN E t 92 u o 12 cm 9 0 525 6 Le 5 lt lt z OLL I rA 9 I d YE OZ HT z s gt o PN I K W i z 5 Wy l I a aw gt TZ000 z gt 5 O lt lt e m I lt lt a lt lt J i J 4 ur 2 an lt DOWD X zu Ou l zi uv Z lt gt lt E gt gt Q 0 22 KY u 2 wO o lt LES 02 x eL I gt O Or i acunuoo LIZLZ iu j x 40 NALA gt 20 iZ AA lt 12 I poc pr I ITU JE lt 020 I lt Lo i a T Page 8 N6DHPAC L M Domestic amp Export 50 Hz Case Circuits SECONDARY AIR FAN MOTORS CASE TOP NT AND THE INFORMATION CONTAINED THEREIN IS PROPRIETARY TO CARRIER CORPORATION ANO SHALL NOT A United Technologies Company BE USEO OR DISCLOSED OTHERS IN WHCLE OR IN PART CORPORATION WITHOUT THE WRITTEN AUTHORIZATION OF CARRI DIAGRAM WRG OC DFR N6DHPAC 12 12 Cases m EE 9 ul o Im Dw a LO s gt c gt m o o z z z i 5 D
5. Lamps Shelf Lamps Page 12 TYLER REFRIGERATION All light ballasts are located under the canopy and mounted above or on the top of the canopy light channel This includes remote ballasts for optional shelf lights and optional nose lights The canopy light s are under the canopy light channel in the top of the case The optional shelf lights are mounted under the top interior liner above each shelf section Checking Air Velocities NOTES Be sure area above the case is clear Conditioned air must circulate above the case for secondary ambient air band intake Do not block or restrict the top secondary ambient air fan grids Check air velocities with an Alnor Jr Model 8100 Velometer with airscoop modification Further information on the Velometer can be obtained from the TYLER Service Department N6DHPACA case air velocities should be as follows Primary Air 110 fpm Seconda Ambient Air 170 fpm p To check the primary air velocity the Alnor Jr scoop should be against the back edge of primary air portion of the grid with the meter facing the front of the case To check the secondary ambient air velocity the Alnor Jr scoop should be turned 90 so the scoop is perpendicular to the ambient air portion of the grid and the meter faces the end of the case Cleaning Honeycomb oince
6. H A Secondary Fan Panel 1 31 32 33 Not Shown 2 I 3 N6DHPACMA Illustrated July 2007 Page 15 N6DHPAC L M H A Operational Parts List Case Usage Electrical Circuit Case Size ECM Fan ECM Fan Motor Brackets ECM Fan 8 75 ECM Sec ECM Sec ECM Sec 7 75 Secondary Fan Motor Guard Opt Ballast T 8 shelf lamps Opt Ballast 5th row shelf lamp Motors Blades 18 5B Fan Motor Fan Bracket Fan Blades 13 5B T 8 Shelf Lampholder Light Switch NSF Product Thermometer 6 9025000 12 Watt 9205112 9040682 9025002 8 Watt 0197471 9042245 5063030 5966635 5991029 5232279 5100565 5967100 Domestic 115 Volt 60 Hertz 8 9025000 12 Watt 9205112 9040682 9025002 8 Watt 0197471 9042245 9063030 5966635 5991029 5232279 5100565 5967100 12 9025000 12 Watt 9205112 9040682 9025002 8 Watt 9197471 9042245 9063030 9966635 5991030 5232279 5100565 5967100 TYLER REFRIGERATION Contact the TYLER Parts Department for information on operational parts not listed above Page 16 July 2007 Installation amp Service Manual NGDHPAC L H A Revision Log This log sheet is intended to track both major and minor revisions to this manual and to describe what the nature of the revision is Revision identification is located in the lower right corner of the cover page Major revisions are lettered alphabe
7. Ip a N6DHPACA Carrier YE1170 YE1171 YE1174 YE1175 A United Technologies Company YE1176 YE1178 REFRIGERATION vn Wantage Installation amp Service Manual E h Ea Airewave NGDHPACLA NGDHPACMA N6DHPAGHA HIGH PERFORMANCE AIR CURTAIN MULTI SHELF MERCHANDISER 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 subject to REPLACES ISSUE PART U S A change without notice EDITION 9 07 5 08 NO 9305819 REV E 2 Tyler Refrigeration Niles Michigan 49120 TYLER Page 2 NGDHPAC L REFRIGERATION CONTENTS Page Specifications N6DHPACLA N6DHPACMA NGDHPACHA Specification Sheets 4 Pre installation Responsibilities See General UL NSF 1 5 Manual Installation Procedures Carpentry Procedures 6 Case Pull Up Locations 6 Refrigeration Procedures 6 Electronic Thermostat Control 6 Electrical Procedures 7 Plumbing Procedures See General UL NSF I amp S
8. Keypad Lock Unlocked Locked 3 Set the Heating Cooling jumper blocks to All NGDHPACA models have four pull ups at the COOL position A the in 4 Set the Cut in at Setpoint Cut out at are located as shown and should be installe Setpoint jumper blocks to the Cut out at and tightened starting with A and finishing Setpoint position with D 5 Set the keypad Locked Unlocked jumper See General UL NSF I amp S Manual for blocks to the Unlocked position line up assembly instructions 6 Replace the electronic thermostat cover and secure with four screws Refrigeration Procedures Refrigeration system and superheat instruc tions can be found in the General UL NSF I amp S Manual Case electronic temperature control information is listed below Electronic Temperature Control Fahrenheit Celsius Symbol Heating Cooling Mode Icon LED Up Button Whenever an N6DHPACA uses an electronic thermostat and solenoid valve for temperature control use the following instructions to properly set up the electronic thermostat 7 To adjust the setpoint Setting the Electronic Thermostat a Push the Menu Button SP will flash 1 Remove the four screws and cover from the onthe ROE dispay electronic thermostat b Push the Menu Button one more time 2 Connect sensor wires to the common and a setpoint temperature will be dis COM and sensor SEN terminals of the played
9. Manual Defrost Information 7 Defrost Control Chart 7 Installation Procedure Check Lists See Gen UL NSF I amp S Manual Wiring Diagrams 7 N6DHPAC L M H A Domestic amp Export 50Hz Case Circuits 8 Cleaning and Sanitation See General UL NSF I amp S Manual Component Removal and Installation Instructions for Cleaning 10 Shelves and Shelf Brackets 10 Bottom IrayS STPPP 10 FONTA DUCIS 254545252454 TAA G m ERASATSRERG RSS 10 Hear Duct Panels 10 Discharge Air Ambient Air Honeycombs 10 TOP DUCI x aod amp sassa e aon oe aasma s aq asas a s AIEO da ohne 8 4 10 Front Cladding 11 June 2008 Installation amp Service Manual NGDHPAC L M H A General Information Air Curtain Operating Information 11 NSF Product Thermometer Installation 13 Egg Merchandiser Kit 12 Service Instructions Preventive Maintenance See General UL NSF 1 5 Manual Ballast and Lighting Locations 12 Check Air Velocities 12 Secondary Ambient Air Fan Replacement 13 Removing Metal Edge Irim 13
10. fan panel See steps 1 thru 4 in Fan Motor Replacement on this page 2 Toreplace fan blades 8 remove spring clips 9 and fan blade 8 from motor shaft 10 Discard spring clips May 2008 N6DHPAC L M 3 Install new fan blade 8 on motor shaft 10 and secure with new spring clips 9 4 Replace fan motor assemblies in the top fan panel See step 5 in Fan Motor Replacement on this page ul S Removing Metal Edge Trim For those who have chosen a metal trim option on Tyler patch ends the edge trim can be easily removed and reinstalled or replaced The diagrams below show the locations of two screws on the top and bottom of each piece of metal trim Locate and unscrew the fasteners first then carefully pull the edge trim from the end Page 13 TYLER REFRIGERATION N6DHPAC L M PARTS INFORMATION Cladding and Trim Parts List Item Description 6 8 12 1 Screw 5183536 4 5183536 6 5183536 8 2 Screw 5183536 8 5183536 8 5183536 8 3 End Cover 9305824 2 9305824 2 9305824 2 4 Canopy Joint Trim 9029422 9029422 9029422 5 Canopy Hood Ptd 9025222 9025223 9025224 6 Front Panel 5636774 5203468 5203469 7 Hand Rail Bumper Retainer color per order 8 Hand Rail Backer 9025316 9025316 9025316 9 Bumper End Trim color per order 10 Color Band Ptd 9023795 9023798 9023800 11 Color Band Backer Ptd 90
11. 40223 9040223 9040223 12 Bumper Backer Y YV D re l color per order 13 Bumper r rr color per order 14 Front Cladding Ptd N6DHPACLA 9025135 9025136 9025137 N6DHPACMA 9025647 9025648 9025649 N6DHPACHA 9300395 9025650 9025651 15 Raceway Cover color per order 16 Raceway Cover Retainer 9023841 2 9023841 4 9023841 6 17 Screw per retainer 5183536 2 5183536 2 5183536 2 18 Screw 5183536 7 5183536 9 5183536 12 19 Raceway Cover End Trim color per order 20 Raceway Cover Backer 7 color per order 21 Kickplate Joint Trim Ptd 9039020 9039020 9039020 22 Metal Kickplate Ptd 9324394 9324402 9324407 23 Shoulder Screw 9025833 6 9025833 8 9025833 8 24 Kickplate Support Assy 9043402 3 9043402 4 9043402 4 25 Screw 5183536 8 5183536 12 5183536 16 26 Raceway Support 9041322 4 9041322 6 9041322 8 27 Raceway 9300242 9300243 9300244 28 Screw Shoulder 9025833 12 9025833 16 9025833 24 29 Horizontal End Trim 5211585 5211585 5211585 30 Pop Rivet 5105037 5 5105037 10 5105037 14 31 Opt Top Front Facia Ptd 9055656 9055654 9055643 not shown 32 Opt Top LH Facia Ptd 9055645 9055645 9055645 not shown 33 Opt Top RH Facia Ptd 9055644 9055644 9055644 not shown Page 14 July 2007 Installation amp Service Manual NGDHPAC L
12. All high performance cases use OFF CYCLE defrost NOTE 18 minutes is for EPR with suction stop for defrost isolation Defrost times increases by four minutes when defrost isolation is by pump down If EPR is utilized use the settings shown in the chart ADD 0 5 to EPR setting for each 1000 foot rise in elevation Recommended setup for a conventional unit uses an electronic thermostat to assure accurate temperature control CASE TO CASE SUCTION LINE SUB FEED BRANCH LINE SIZING wa s e wpe e w w e w e CASE CIRCUITS This case requires a 120V circuit for fans and lights SHELVING NOTES Shelving widths available for these cases are 15 18 20 and 22 When two sizes are used the smaller must be on top 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 analysis and or tests performed in a controlled lab environment that are consistent with industry practices and is intended as a reference for system sizing and configuration purposes only and for use by persons having technical skill at their own discretion and risk Conditions of use are outside of Tyler s control and we do not assume and hereby disclaim any liability for results obtained or damages incurred through applica
13. LIGHTING IW CIS OPTIONAL NOSE LIGHTS July 2007 ALL CASES MUSI BE GROUNDED NOTE OPTIONAL TERMINAL BLOCK 6 SISISISIS sIeisisis M 50505 AUTHORIZATION NUMBER ENGINEERING CRITICAL SAFETY MANUFACTURING doe eere A serere eee eee Phe evene e e eee ee ee eoe ee END OF REV PROCESS REQUIREMEN 06 11 08 CHECKER zi 06 11 08 JEM MODEL NAME 06 11 08 DRAFTER CAD MODEL INTERNAL USE ONLY TED ENGINEERING REQUIREMENTS TED SURFACE FINISH MFG PURCH 06 11 08 50505 RELEASE LEVEL i e o u a 2 2 eo 2 z z z n lt x I o a u z a o a 24 gt we H I x a 2 2 lt G r4 V O lt c lt 2 o X n Q a lt REV COMPONENT MATERIAL S MUST MEET THE FOLLOWING CRITERIA WHERE APPLICABLE TYLER STANDARDS EP 200 EP 221 EP 233 EP 234 amp EP 235 CFR UL94 UL471 NEC NSF2 NSF7 NSF35 NSF51 IPPC ASME SECTION AND BE UL R C OR LISTED AND CSA APPROVED A CRITICAL FUNCTION Page 9 N6DHPAC L M CLEANING AND SANITATION Component Removal and Installation Instructions for Cleaning Shelves and Shelf Brackets 1 Remove produc
14. Parts Information Cladding and Trim Parts List 14 Operational Parts List 16 Revision Log 4 17 TYLER Warranty The following High Performance Air Curtain Medium Temperature Multi Shelf Dairy Deli Produce and Juice Merchandiser models are covered in this manual MODEL DESCRIPTION N6DHPACLA 6 8 amp 12 HIGH PERF AIR CURTAIN MERCHANDISER WITH 18 FRONT N6DHPACMA 6 8 amp 12 HIGH PERF AIR CURTAIN MERCHANDISER WITH 22 FRONT N6DHPACHA 6 8 amp 12 HIGH PERF AIR CURTAIN MERCHANDISER WITH 26 FRONT September 2007 Page 3 TYLER N6DHPAC L M D REFRIGERATION SPECIFICATIONS N6DHPAC L M H A High Perf Air Curtain Med Temp Merchandisers Refrigeration Data CHARGE MODEL LBS FT CASE sabes CONVENTIONAL N6DHPACLA 6 8 12 1000 1059 28 26 345 110 170 0 55 6 6 8 12 MEDTEVP 960 1 16 287 26 345 110 170 0 55 N6DHPACHA 6 8 12 MEDTEMP 920 974 26 3 55 110 i707 655 Capacity data listed for cases with 2 rows of T 8 canopy lights and 4 rows of unlighted 22 deep shelves Adjustments must be made to this base rating for each option installed on this case ADD 23 BTUH FT for each row of lighted shelves For cases using peg bars ADD 132 BTUH FT to paral
15. eway cover installation and removal instructions Case Fan Circuit This circuit is to be supplied by an uninter rupted protected 120V circuit The case fan circuit is not cycled May 2008 N6DHPAC L M H A Fluorescent Lamp Circuit N6DHPACA case lighting is supplied by T 8 electronic ballast lights The standard lighting is 1 row of horizontal canopy lights Case lighting options include 2 rows of horizontal canopy lights up to 5 rows of shelf lights and a nose light Defrost Information See General UL NSF I amp S Manual for operational descriptions for each type of defrost control Defrost Control Chart Defrost Defrost Defrosts Duration Type Per Day Min Off Time 6 18 w shelves 18 minutes is for EPR only Defrost duration increases by 4 minutes when controller methods do not include an EPH valve 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 and 9 will cover the NGDHPACA case circuits The defrost and lighting circuits are covered in the case circuit diagrams Page 7
16. lel load or ADD 153 BTUH FT to conventional load NOTE Baffles are required above each peg bar row to provide proper air flow around the food products For sizing all refrigeration equipment other than TYLER use conventional BTUH values Evaporator temperature is based on the saturated pressure leaving the case Air velocity measured 1 hour after defrost at the front of the top discharge air duct using an ALNOR JR velometer with a scoop This is an average refrigeration charge per foot based on R22 and R404A refrigerant usage FOR SPECIFIC COMPRESSOR SIZING INFORMATION REFER TO TYLER APPLICATIONS FOR RACK SYSTEM COMPRESSORS AND OR THE COMPRESSOR MANUFACTURERS FOR SINGLE COMPRESSORS FOR LINE SIZING INFORMATION REFER TO THE MISCELLANEOUS SECTION BUFF IN THE TYLER SPECIFICATION GUIDE DISCHARGE AIR AVG REF Electrica Data Fans and Heaters 120 Volt FANS TOTAL TOTAL PER CASE ECM FANS ANTI SWEATS MODEL det AMPS WATTS WATTS PRIM SEC PRIM SEC NeDHPACUMH A 6 2 1 0 22 340 11 0 NA NeDHPAC LMHJA 8 amp 2 2 4 Standard lighting for this case is 2 rows of canopy lights Defrost Data ELEK THERMOSTAT pou CONVENTIONAL AIR SENSOR SETTINGS EPR SETTINGS COMPRESSOR SETTINGS DEFROST DEFROST DEFROSTS WATER R22 R404A R22 R404A TIMEOFF 6 18 rnonrloap auappucarons 33 F 32 F 52 66 50 F 36 F 64 F 47 F 6 9 max
17. ral UL NSF I amp S Manual 2 Remove color band bumper and bumper retainer from the case See General UL NSF 1 5 Manual 3 Remove screws for top and bottom of front cladding and remove cladding 4 After cleaning replace front cladding and remaining front components in reverse order GENERAL INFORMATION High Performance Air Curtain HPAC Operating Information OPTIONAL SOFFIT OPTIONAL REMOVABLE AIR FLOW lt E gt FACIA J PRIMARY t AIR ROUW m MT Tyler s High Performance Air Curtain HPAC reduces case refrigeration load and energy usage A secondary ambient air curtain acts as a wall to reduce cold air spillage from the primary air curtain and ambient air infiltration from the store atmosphere July 2007 N6DHPAC L M Secondary ambient air fans are mounted on top of the case These fans circulate air from the store atmosphere that creates a wall of air that keeps refrigerated air in the case and warm air out of the case The final result is the most efficient operating case in the industry NOTE When case is installed under a soffit with a facia the facia must be removable to provide service access to the secondary ambient air fans NSF Product Thermometer Installation 1 Unwrap the thermometer and bracket assembly shipped loose with the case NOTE Recommended bottom tray position is with the lips up 2 Position bracket in front left corner of the left mo
18. s with electrical receptacles can be cleaned without removing the electrical receptacles Do not get moisture on electrical wires when cleaning under this cover Moisture on wires could cause premature product failure and or personal injury or death from electrical shock 6 After cleaning reconnect the shelf harness connector install the top socket assembly replace and secure rear duct panels in reverse order Discharge Air Ambient Air Honeycombs 1 Loosen screws securing rear retainer plate NOTE Note position of the honeycomb grid during removal so it can be reinstalled the same way 2 Slide rear retainer plate back until the honeycomb grid sections can be removed from the top duct If secondary air baffle behind the honey comb grid section needs to be cleaned remove screws and secondary air baffle CAUTION Improper installation of the honeycomb grid section could result in improper air flow and or poor refrigeration 3 After cleaning replace components in reverse order and secure with the rear retainer plate and screws Top Duct 1 Remove shelves and shelf brackets see above 2 Remove screws rear retainer plate and honeycomb grid sections from top of case 3 Remove screws and top duct from case 4 After cleaning replace top duct and remaining components in reverse order July 2007 Installation amp Service Manual Front Cladding 1 Remove front kickplate and raceway cover See Gene
19. st bottom tray Making sure the bracket is flush with the left edge use the bracket holes as a template for where to drill the holes 3 Drill two 196 holes in the bottom tray NOTE For ease of installation position the wash ers and capnuts on the top side of the bracket and bottom tray 4 Mount the bracket to the bottom tray with two screws washers and capnuts Page 11 NGDHPAC L M H A Egg Merchandiser Kit Instruction All egg shelves come galvanized or stainless steel The upper egg shelves are 15 x 48 and come with 82 degree fixed white brackets The brackets are available in one position only The upper egg shelves assemblies include a rear air close off Tilted base egg shelves come in 4 modules They are designed and notched to fit inside the existing 2 bottom trays NOTE Egg shelves are designed to catch and hold spilled liquids so they can be cleaned up before getting further into the case If the tilted base shelves are used upside down improper shelf support will result causing the middle of each shelves to sag Upside down usage also allows drippage to get into the case making cleaning very difficult Good sanitation is essential for egg merchandising SERVICE INSTRUCTIONS See General UL NSF I amp S Manual for T 8 lamp canopy ballast fan blade and motor and color band and bumper replacement instructions Ballast and Lighting Locations Canopy amp Shelf Ballasts P
20. t from shelves 2 If shelf has a light unplug the light cord from the socket in the rear duct panel Completely insert socket cover in the light socket to protect the receptacle 3 Push shelves back and then lift up and out to remove them from the shelf brackets 4 Remove shelf brackets from slots in rear uprights 5 After cleaning replace in reverse order Bottom Trays 1 Remove product from bottom of case 2 Grasp and lift out each of the bottom trays from the case interior 3 After cleaning replace in reverse order Front Air Ducts 1 Remove lower trays see this page 2 Lift out front air duct sections 3 After cleaning replace in reverse order Rear Duct Panels w o Shelf Light Sockets 1 Remove shelves and bottom trays see above 2 Remove mounting screws and rear duct panels from case 3 After cleaning replace and secure rear duct panels in reverse order with Shelf Light Sockets 1 Remove shelves and bottom trays see above 2 For cases with 5 rows of lighted shelves remove screw above top shelf socket and push socket assembly back through the hole in the rear duct panel 3 Remove mounting screws from rear duct panel Page 10 TYLER REFRIGERATION 4 Slowly lift out rear duct panel until the shelf harness connector near the top of the panel can be accessed 5 Disconnect shelf harness connector and complete removing the rear duct panel WARNING Rear duct panel
21. terminal strip located at the top left of the c Push the Up or Down Button until the printed circuit board The sensor leads are desired setpoint is displayed interchangeable N6DHPAC w shelving 32 F d Push the Menu Button Page 6 July 2007 Installation amp Service Manual 8 To adjust the differential a Push the Menu Button SP will flash on the LCD display b Push the Down Button until DIF is shown on the LCD display c Push the Menu Button one more time and a differential number will be dis played d Push the Up or Down Button until the desired differential setting is displayed N6DHPACA all applications 2 F d Push the Menu Button With the cooling mode selected the differential is ABOVE the setpoint The relay will energize and the LED indicator will illuminate when the temperature reaches the differential setting When the temperature drops to the setpoint the relay and LED indicator will de energize and refrigeration will stop The settings above are specific to TYLER N6DHPACA cases Other applications will require different setpoints and differentials Electrical Procedures Electrical Considerations CAUTION Make sure all electrical connections at components and terminal blocks are tight This will prevent burning of electrical terminals and or premature component failure NOTE Raceway covers will be shipped loose See the General UL NSF I amp S Manual for rac
22. the honeycomb is a single honeycomb that cover multiple air bands it will require cleaning How often will depend on the amount of dust and lint in the store air Need for cleaning can be determined by compar ing clean honeycomb air velocities with what velocities are being produced when they are checked See page 10 in this manual for cleaning instructions September 2007 Installation amp Service Manual Secondary Ambient Air Fan 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 m x Secondary ambient air fans are located on top of the case near the front edge of the top panel If top of case is behind a facia remove facia to gain access to the fans Fan Motor Replacement 1 Remove screw and top fan guard 1 2 Remove three screws mounting brackets 2 from top fan panel 3 3 Carefully lift fan motor assembly 4 and unplug wire connector 5 4 Remove three screws bracket mounting plate 6 and mounting brackets 7 from top fan motor 4 NOTE If replacement blades and or motor are not available unplug motor and cover opening until the replacement parts are available 5 Replace new secondary ambient fan motor assemblies in reverse order Replace facia if removed to access the fans Fan Blade Replacement 1 Remove fan motor assembly from top
23. tically dated accordingly and require reprinting for inclusion with the product at shipment Minor revisions are denoted after the major revision with a period followed by a sequential number and do not require a printed update All manuals with any revision changes will be avail able in electronic PDF format on the Tyler Refrigeration website Content changes that determine the type of revisions are decided on a case by case basis by Tyler internal management This revision log was created in October of 2008 REVISION TYPE DATE MAJOR MINOR DESCRIPTION RESULTS 2008 wiring diagrams added terminal blocks to electrical Service Instructions added metal edge trim replacement Apr 2009 _ Updated fan blade info on p 16 ECM fan blade p n s amp blade angle chg October 2008 Page 17
24. tion of or reliance on the data presented including but not limited to specific energy consumption with any particular model or installed application SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE Page 4 June 2008 Installation amp Service Manual NGDHPAC L M N6DHPACA CROSS SECTION 43 23 1 2 14 gt mnt FanAssy 4 Shelf Siot 1 3 4 peces s nest Ke S 50 x 60 1 4 94 58 87 18 20 or 22 Bottom Shelf Slot 31 1 2 N6DHPACHA 21 3 4 29 1 2 7 1 2 2 NOTE Front height 2 jou S 25 41 1 2 a N6DHPAGLA with nose light 43 1 2 FLOOR PLAN ALLOW 3 SPACE between the back of this case and the store wall other cases or coolers to minimize possible condensation problems FORCED VENTILATION may be necessary in some situations 1 6 8 or 12 3 1 2 Rear of Case d 1 1 2 REA pet tl YES lt a dn AT s for Standard Patch End Base Optional 3 3 x 5 Rear Piping af 32 Access Area ear Base 2 1 2 Clearance 38 ti a Putin Between Bottom 43 1 2 of Drain Pipe EET VERE bat eat em 3 4 or 6 June 2008 Page 5 TYLER N6DHPAC L M D REFRIGERATION Heating Cooling Mode INSTALLATION PROCEDURES Carpentry Procedures Case Pull Up Locations AR BD f Cut out mg sit at Setpoint tes Cutin at Setpoint
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