Installation & Service Manual NFJ, NCJ, NTJ, NFJE, NCJE 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 DATE 2/01 NO. 9037164 REV. Tyler Refrigeration Corporation * Niles, Michigan 49120 JUMBO ISLAND FROZEN FOOD & ICE CREAM MERCHANDISERS Low Temperature Self Serve Display Cases
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Installation & Service Manual - Hill Phoenix · Installation & Service Manual NFJ, NCJ, NTJ, NFJE, NCJE February, 2001 Page 7 INSTALLATION PROCEDURES Carpentry Procedures Case Pull-Up
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Installation & ServiceManual
NFJ, NCJ, NTJ, NFJE, NCJE
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 PARTIN U.S.A. change without notice. EDITION DATE 2/01 NO. 9037164 REV.
SPECIFICATIONSNFJ/NCJ/NTJ/NFJE/NCJE Jumbo Island and End Frozen Food & Ice Cream Merchandiser
Installation & Service ManualNFJ, NCJ, NTJ,
NFJE, NCJE
February, 2001 Page 5
NFJ/NCJ/NTJ/NFJE/NCJE Jumbo Island and End Frozen Food & Ice Cream Merchandiser
NFJ, NCJ, NTJ,NFJE, NCJE Tyler Refrigeration
Page 6 February, 2001
NFJ/NCJ/NTJ/NFJE/NCJE Jumbo Island and End Frozen Food & Ice Cream Merchandiser
Installation & Service ManualNFJ, NCJ, NTJ,
NFJE, NCJE
February, 2001 Page 7
INSTALLATION PROCEDURESCarpentry Procedures
Case Pull-Up Locations
The NFJ/NCJ/NTJ models have two pull-ups ateach end of the case. Pull-ups A and B arelocated as shown and used for joining allcases. The NFJE and NCJE models have fourpull-ups at the rear of the case. Pull-ups A, B,C and D are located as shown and used forjoining end cases. All pull-ups should beinstalled and tightened starting with A and fin-ishing with B or D.
1” Solid Partition
A 1” insulated partition is required betweenadjacent gas defrost cases that are on differentdefrost schedules. 1” partitions are shippedinstalled as specified in the case order. Makesure the partitioned case is being installed inthe proper location in the case line-up. Thisassures proper refrigeration to all parts of thecase line-up.
Apply sealant to outside surface of partitionwhere the two surfaces of the adjoining casewill contact the partition.
See “General-UL/NSF I&S Manual” for line-up assembly instructions.
After all case pull-ups have been secured, allinterior wall joint seams should be sealed withduct tape.
Plexiglas Partition
A plexiglas plug partition is required on adja-cent electric defrost cases that are on differ-ent defrost schedules. These partitions canbe installed after the cases have been joined.
1. Install partition brackets (1) at case jointon front, center and/or rear case wall (2)with screws 3)
2. Slide plexiglas partitions (4) into partitionbrackets (1).
Superstructure Installation
1. Lay wire harnesses (1) in “V” of centerpartition (2). The 8’ harness has threefemale plugs and one male plug. The 12’harness has four female plugs and onemale plug. There is one harness for shelfanti-sweat heaters and one for the shelflights. The sockets are not interchange-able. Run the male plugs down the RHpost socket (3) and plug them into thematching receptacles in the 115V casewiring block (4).
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2. Position the RH end post (5) in the RHsuperstructure hole in the center riser (3).Install the two plugs (6) and push theminto the insulation. Push down the RHend post (5) until it seats into the centerriser (3).
NOTEOn 12’ cases, the electrical outlets on thecenter posts must face the end posts.
3. Install the center post(s) (7) as describedin step 2. Route the wires around theposts in the insulation.
4. Install the LH end post (8) as described instep 2.
NOTENotches on upright alignment channel willhelp position the channels properly.
5. Position the upright alignment channel (9)on top of the upright posts. Using theholes in the upright alignment channel asa guide, drill pilot holes in the uprightposts and secure with screws (10).
NOTENotches on harness covers will help posi-tion the covers properly.
6. Position harness covers (11) on top of thecenter partition. Using the holes in theharness cover as a guide, drill pilot holesin the center partition and secure withscrews (12).
7. Install each pair of shelf brackets (13) inslots in upright posts. Use one RH andone LH bracket per shelf. Superstruc-tures with end shelves have angled brack-ets on the end shelf uprights (14).
8. Position shelves (15) on shelf brackets(13) and install front alignment screws(16).
9. Install shelving close-offs (17) in spacebetween shelves. The close-offs are sup-ported by the shelf brackets (13). If endclose-offs (18) are supplied, they are alsosecured to the shelf brackets (13).
10. Plug in the shelf anti-sweat heaters (19)and shelf lights (20).
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February, 2001 Page 9
Trim Installation/Alignment
See “General-UL/NSF I&S Manual” forbumper, color band, raceway and kickplateinstallation.
Corner Trim Installation
Most corner trim on these cases comes fac-tory installed. The kickplate corner trim
requires field installation.
After kickplates (1) have been installed, slidekickplate corner trim (2) into both ends of thekickplates (1).
Plumbing ProceduresSee “General-UL/NSF I&S Manual” for rec-ommended drain practices.
Waste Outlet Heater
These cases require a waste outlet heater. A16 Watt heater is located inside a pipe justbelow the 1” waste pipe and runs from oneside to the other. The heater wires run intothe case raceway and are to be connected tothe fan circuit leads when wiring the cases.
Refrigeration Procedures
See “General-UL/NSF I&S Manual” for gen-eral system, control and superheat infor-mation.
There are three standard versions of the 8’and 12’ case.
NFJ is for frozen food or medium temp.usage and is equipped with one electricdefrost heater on each side. The entire case,both sides, will operate at low or mediumtemperatures.
NCJ is for ice cream usage and is equippedwith two electric defrost heaters on each side.
NTJ is the split temp. version for ice cream onone side and frozen food on the other. NTJ isequipped with two electric defrost heaters oneach side. This case also has an insulatedcenter partition to aid in maintaining the tem-perature difference in the two sides. Thisallows either side of the case to be run fromseparate refrigeration systems.
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The NTJ case can also be set up to displayfrozen food on one side and medium temp. onthe other. Either side can be optionally set upwith a dual temperature control to allow oneside to be switched between low temp. andmedium temp. operation. The evaporator coilsare piped individually so there are two refriger-ation stub-ups.
NFJ or NTJ cases set up for electric defrostmedium temp. applications utilize the standarddefrost heaters. Gas defrost medium temp.applications incorporate a fan delay klixon.
Optional Dual Temperature Control
The dual temperature control unit is a factoryinstalled option. This control allows the user toeasily switch from medium to low temperatureoperation by flipping a switch. The dual tem-perature control consists of an EPR valve in thesuction line coming off the evaporator. TheEPR valve can be bypassed with a solenoidcontrolled bypass line around it. The toggleswitch opens or closes this solenoid.
When the solenoid is open, the evaporator isconnected directly to the compressor suctionthat allows for low temperature operation.When the solenoid is closed, the evaporatormust operate through the EPR valve which hasbeen preset to the desired medium tempera-ture.
EXAMPLE: R-404A system with 12 psig ofsuction pressure. With the suction line sole-noid open, the coil pressure operates at 12psig with a temperature of -29°F. When thetoggle switch is flipped, the solenoid closesdirecting the flow through the EPR valve. If theEPR valve is set for 48 psig, the evaporator willsee a coil temperature of 12°F and will operateat a discharge air temperature of about 22°F.
When gas defrost is used, an additional checkvalve is mounted around the EPR valve toallow reverse flow for the defrosting gas. A fandelay is also connected with gas defrost tocycle the fans off, but only during the mediumtemperature mode.
Electrical Procedures
Electrical Considerations
CAUTIONMake sure all electrical connections atcomponents and terminal blocks are tight.This prevents burning of electrical termi-nals and/or premature component failure.
NOTEThe raceway houses the electrical wiring,components and terminal blocks for thecase. All raceway covers will be shippedloose.
Case Fan Circuit
This circuit is to be supplied by an uninter-rupted, protected 120V circuit. The case fancircuit is not cycled, except when equippedfor gas defrost. On gas defrost cases the fancircuit is controlled by a 50/40 klixon, but onlyduring the medium temp mode.
NOTEWith gas defrost, the fans will not startuntil the coil temperature reaches 40°F atthe fan delay thermostat. This only appliesin the medium temp mode.
Anti-Sweat Circuit
NFJ/NCJ/NTJ cases have one anti-sweatheater in each discharge air grid and one atthe top of the center riser. When cases areequipped with an optional superstructure,there is an anti-sweat heater on the super-structure. NFJE/NCJE end cases have oneanti-sweat heater in the discharge air grid andin the return air grid. Anti-sweat heaters arewired directly to the main power supply sothey can operate at all times.
Superstructure Shelf Lamp Circuit
Optional superstructures can be equippedwith one row of 430MA T-12 shelf lights.
Installation & Service ManualNFJ, NCJ, NTJ,
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February, 2001 Page 11
Defrost InformationSee “General-UL/NSF I&S Manual” for opera-tional descriptions for each type of defrostcontrol.
Defrost Control Chart Defrost
Defrost Defrosts Duration Term.Type Per Day (Min) Temp.Electric/FF 1 60 50°FElectric/IC 1 36 50°FGas/FF 2 20-25 55°FGas/IC 2 25-30 55°F
Most klixons are located on the right end of theevaporator coil. The diagram shows the locationfor each defrost type that uses a klixon.
NOTEThe defrost termination klixon for gas defrostis located at the bypass check valve.
CAUTIONIf electronic sensors are used in place of theklixons, the sensors must be located in thesame location as the klixons for that defrosttype. Any other locations will effect therefrigeration efficiency of the case.
Defrost Schedules
For satisfactory performance, both sides of thecase should be scheduled to defrost at the sametime. This holds true even when both sides runfrom different machines.
Two Single Machines Use the defrost clockwhich controls one of the machines and run arelay to control the other machine. Defrost loadis spread across clock contacts and extra con-tactors (as required).
Parallel with Electric Defrost and DualTemp or Split Temp Operation Use one sta-tion of the multi-circuit time clock to controlthe defrost circuit breakers for the casesdefrost heaters. This ensures both sidesdefrost at the same time.
Parallel with Gas Defrost (NTJ only) Makesure that only 25% of the combined load(frozen food & ice cream) is on one circuit.Use one station of the multi-circuit time clockto control the booster circuit and that portionof the frozen food cases opposite the icecream side.
Gas defrosting is only available as an optionon cases operated from a parallel system.About 25% of the cases can be defrosted atone time. This allows the refrigeration heatbeing removed from the cases to be used todefrost the others.
NOTEInsulated partitions must be used betweencase line-ups that have gas defrost!
Gas defrost cases (NFJ/NCJ/NFJE/NCJE) arepiped individually and are to be joined atinstallation when both sides are on the samesystem. Split Temp cases (NTJ) with gasdefrost should be piped to thier respectivesystems and defrosts should be scheduled atthe same time.
WIRING DIAGRAMSELECTRICIAN NOTE - OVERCURRENT
PROTECTION120V circuits should be protected by 15 or 20 Ampdevices per the requirements noted on the cabinetnameplate or the National Electrical Code, CanadianElectrical Code - Part 1, Section 28. 208V defrostcircuits employ No. 12 AWG field wire leads for fieldconnections. On remote cases intended for end toend line-ups, bonding for ground may rely upon thepull-up bolts.
The following wiring diagrams on pages 12thru 17 will cover the NFJ/NCJ/NTJ/NFJE/NCJE case circuits, electric defrost circuit,gas defrost circuit, dual temperature controlcircuits and the superstructure wiring circuit.
2. Grasp and lift out each of the bottom traysfrom the case interior and carefullyremove through the door openings
3. After cleaning, replace in reverse order.
NSF Product Thermometer
Remove four screws and product thermome-ter bracket assembly from right rear locationin the case. After cleaning, replace productthermometer bracket assembly and securewith four screws.
Discharge Air Honeycomb
1. Remove screws and bottom retainer stripfrom front or rear interior of case.
NOTENote position of the honeycomb grid dur-ing removal so it can be reinstalled thesame way.
2. Remove honeycomb grid sections fromthe front or rear duct.
CAUTION
Improper installation of the honeycombgrid section could result in improper airflow and/or poor refrigeration.
3. After cleaning, replace honeycomb gridsections as they were removed andsecure with the bottom retainer strip andscrews.
Rear Duct Panels
1. Remove bottom trays and discharge airhoneycomb (NFJE/NCJE), see above.
2. Remove mounting screws from rear ductpanel.
3. After cleaning, replace in reverse order.
Front Air Duct Panels
1. Remove bottom trays and discharge airhoneycomb (NFJ//NCJNTJ), see thispage.
2. Remove screws and front air duct panelsfrom case.
3. After cleaning, replace in reverse order.
Corner Trim
1. See page 19 for corner trim removalinstructions.
2. After cleaning trim and cladding compo-nents, replace front cladding and cornertrim components in reverse orde usinginstructions below and on page 19.
Front Cladding
1. Remove front kickplate and racewaycover.
2. Remove screws from bottom and top offront cladding and pull cladding down toremove it from behind the bottom edge ofthe bumper retainer.
3. After cleaning, replace front cladding andremaining front components in reverseorder.
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February, 2001 Page 19
Corner Trim Replacement
Since some of the corner trim fasteners arehidden, remove the trim and hardware in thefollowing sequence.
1. Remove kickplates (1) and kickplate cor-ner trim (2) from both sides of the cornertrim.
2. Remove raceway covers (3) from bothsides of the corner trim.
3. Remove four screws (4) and cornercladding trim (5)
4. Remove two top screws (6) from the race-way corner trim (7), then lift and removethe raceway corner trim (7) from the retain-ers in the bottom slots.
5. Remove two bottom screws (8) and lift offthe bumper corner trim (9).
6. Replace bumper corner trim, raceway cor-ner trim, corner cladding trim, racway cov-ers and kickplates in reverse order.
SERVICE INSTRUCTIONSSee “General-UL/NSF I&S Manual” for fanblade and motor replacement, color bandand bumper replacement and raceway coverremoval instructions.
NSF Product ThermometerReplacement
1. Remove four screws (1) and thermometerbracket (2) from rear of case.
2. Remove two screws, nuts, washers and theproduct thermometer (3) from the ther-mometer bracket (2).
3. Install and secure a new product ther-mometer (3) on the thermometer bracket(2) with two screws, washers and nuts.
4. Install thermometer bracket (2) on rear ofcase with four screws (1).
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Anti-Sweat ReplacementWARNING
Shut off or disconnect power supply tocase before changing an anti-sweat.Electrical power from wire ends coulddamage other components and/or causepersonal injury or death.
Discharge Air Grid Anti-Sweat (NFJ/NCJ/NTJ)
1. Remove screws (1) retainer strip (2) anddischarge air grid (3) from interior of thefront case wall (4).
2. Remove mounting screws and supportassembly (5) from air grid opening.
3. Disconnect or cut the defective anti-sweatwire (6) from the case wires.
4. Remove and replace the aluminum tapeand defective anti-sweat wire (6) from topof support assembly (5).
5. Reconnect the anti-sweat wires andreplace the support assembly, dischargeair grid and mounting hardware.
Defrost Heater Replacement
WWAARRNNIINNGGAlways shut off electricity to case beforereplacing a defrost heater. Automaticcycling of fans or electrical power to wireends could cause personal injury and/ordeath.
4. Install new defrost heater (4) in reverseorder.
5. Restore electrical power to case.
Installation & Service ManualNFJ, NCJ, NTJ,
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February, 2001 Page 21
Return Air Duct Anti-Sweat(NFJE/NCJE)
NOTECladding corner trim, bumper corner trim,front bumper and front bumper retainermust be removed from the end case.
1. Remove screws and front trim assembly(1) from top of front case wall (2).
2. Disconnect or cut the defective anti-sweatwire (3) from the case wires.
3. Remove and replace the aluminum tape(4) and defective anti-sweat wire (3) frominside of front trim assembly (1).
4. Reconnect anti-sweat wires to case wiresand reinstall front trim assembly withscrews.
5. Install front bumper retainer, front bumperand all other removed corner trim on theend case.
Center Riser Anti-Sweat (NFJ/NCJ/NTJ)
1. Remove screws (1) and top riser cap (2)from top of center riser (3)
2. Disconnect or cut the defective anti-sweatwire (4) from the case wires.
3. Remove and replace the aluminum tapeand defective anti-sweat wire (4) from thebottom of the top riser cap (2).
4. Reconnect the anti-sweat wires and replacethe top riser cap and mounting hardware.
Discharge Air Grid Anti-Sweat (NFJE/NCJE)
1. Remove screws and rear guard trim (1)from top of rear case wall (2).
2. Disconnect or cut the defective anti-sweatwire (3) from the case wires.
3. Remove and replace the aluminum tape (4)and defective anti-sweat wire (3) from top ofrail and wire trim assembly (5).
4. Reconnect anti-sweat wires to case wiresand reinstall rear guard trim with screws.
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PARTS INFORMATION
Cladding and Trim Parts ListsItem Description NFJ/NCJ/NTJ
8’ 12’1 Bumper Retainer color per order2 Bumper Retainer/Hand Rail Backer 9025316 (2) 9025316 (2)3 Color Band, Painted 9023798 (2) 9023800 (2)4 Color Band Backer, Painted 9040223 (2) 9040223 (2)5 Bumper End Trim color per order6 Bumper Backer color per order7 Bumper color per order8 Front Cladding, Painted 9041965 (2) 9041966 (2)9 Raceway Cover Backer color per order10 Raceway Cover End Trim color per order11 Raceway Cover color per order12 Kickplate color per order13 Screw (per retainer) 5183536 (2) 5183536 (2)14 Raceway Cover Retainer (per case) 9023841 (4) 9023841 (6)15 Screw (per side) 5183536 (8) 5183536 (12)16 Kickplate Support Assy. (per side) 9042415 (3) 9042415 (4)
Base End Closeoff - RH (for flat end) 9027926 9027926
For additional information on parts not listed above contact the TYLER Service Parts Dept.
Installation & Service ManualNFJ, NCJ, NTJ,
NFJE, NCJE
February, 2001 Page 23
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Item Description NFJE/NCJEFront Side
1 Bumper Retainer color per order2 Bumper Retainer/Hand Rail Backer 9025316 90253163 Color Band, Painted 9023795 90237894 Color Band Backer, Painted 9040223 90402235 Bumper End Trim color per order6 Bumper Backer color per order7 Bumper color per order8 Front Cladding, Painted 9025642 90256409 Raceway Cover Backer color per order10 Raceway Cover End Trim color per order11 Raceway Cover color per order12 Kickplate color per order13 Screw (per retainer) 5183536 (2) 5183536 (2)14 Raceway Cover Retainer (per side) 9023841 (3) 9023841 (2)15 Kickplate Support Assy. (per side) 9042415 (4) 9042415 (2)
Item Description Per Corner1 Upper Corner Trim (bumper) color per order2 Screw 9025833 (2)3 Corner Cladding Trim 90413364 Screw 5048626 (4)5 Screw 9025833 (2)6 Raceway Corner Trim color per order7 Kickplate Corner Trim, color per order
For additional information on parts not listed above contact the TYLER Service Parts Dept.
Installation & Service ManualNFJ, NCJ, NTJ,
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February, 2001 Page 25
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Operational Parts List
Case Usage Domestic Export
Electrical Circuit 115 Volt 60 Hertz 220 Volt 50 Hertz
Case Size 8’ 12’ End Case 8’ 12’ End Case
Fan Motor 5644521 5644521 5644521 5126572 5126572 51265725 Watt 5 Watt 5 Watt 5 Watt 5 Watt 5 Watt
Fan Motor Brackets 5213132 5213132 5213132 5213532 5213532 5213532
Fan Bracket Plate 9041077 9041077 9041077 9041077 9041077 9041077