Tyler Advantage NFNX Supplement

Installation & Service
Manual
NFNX, NCNX, NFNGX, NCNGX
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 1/06 DATE 11/07 NO. 9037143 REV. C
Tyler Refrigeration * Niles, Michigan 49120
NARROW ISLAND FROZEN FOOD & ICE CREAM MERCHANDISERS
Low Temperature Self Serve Display Cases

CONTENTS
Page
Specifications
NFNX/NCNX/NFNGX/NCNGX 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
1” Solid Partition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Plexiglas Partition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Trim Installation/Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Plumbing Procedures . . . . . . . . (See General-UL/NSF I&S Manual)
Refrigeration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Optional Dual Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Defrost Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Defrost Control Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation Procedure Check Lists (See General-UL/NSF I&S Man.)
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
NFNX/NCNX/NFNGX/NCNGX
Domestic & Export (50 Hz) Case Circuits . . . . . . . . . . . . . . . . . . . . . 9
Dual Temperature Control Circuits . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cleaning and Sanitation . . . . . . . . . . . . (See General-UL/NSF I&S Manual)
Component Removal and Installation Instructions for Cleaning 13
Bottom Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
NSF Product Thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Discharge Air Honeycomb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Rear Air Duct Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Front Air Ducts Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Corner Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Front Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
NFNX, NCNX, NFGNX,
NCNGX
Page 2 November, 2007

The following Low Temperature Narrow Island Frozen Food and Ice Cream Merchandiser
models are covered in this manual:
MODEL DESCRIPTION
NFNX 8’ & 12’ NARROW ISLAND FROZEN FOOD MERCHANDISERS
NCNX 8’ & 12’ NARROW ISLAND ICE CREAM MERCHANDISERS
NFNGX 8’ & 12’ GLASS FRONT NARROW ISLAND FROZEN FOOD
MERCHANDISERS
NCNGX 8’ & 12’ GLASS FRONT NARROW ISLAND ICE CREAM
MERCHANDISERS
Installation & Service Manual
NFNX, NCNX, NFNGX,
NCNGX
November, 2007 Page 3
Page
Service Instructions
Preventive Maintenance . . . . . . (See General-UL.NSF I&S Manual)
Fan Blade and Motor Replacement (See General-UL/NSF I&S Man.)
Color Band and Bumper Replacement (See Gen.-UL/NSF I&S Man.)
NSF Product Thermometer Replacement . . . . . . . . . . . . . . . . . . 14
Corner Trim Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Defrost Heater Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Anti-Sweat Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Front Glass Replacement (NFNGX/NCNGX) . . . . . . . . . . . . . . . . 16
Parts Information
Operational Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cladding and Optional Trim Parts List . . . . . . . . . . . . . . . . . . . . . 18
NFNX and NCNX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
NFNGX and NCNGX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
TYLER Warranty . . . . . . . . . . . . . . . . . (See General-UL/NSF I&S Manual)

NFNX, NCNX, NFGNX,
NCNGX
Page 4 March, 2008
SPECIFICATIONS
NFNX/NCNX/NFNGX/NCNGX Narrow Island FF & IC Merchandisers

Installation & Service Manual
NFNX, NCNX, NFNGX,
NCNGX
March, 2008 Page 5

NFNX, NCNX, NFGNX,
NCNGX
Page 6 November, 2007
INSTALLATION PROCEDURES
Carpentry Procedures
Case Pull-Up Locations
The NFNX/NCNX/NFNGX/NCNGX models have
two pull-ups at each end of the case. Pull-ups
A and B are located as shown and used for
joining all cases. All pull-ups should be
installed and tightened starting with A and
finishing with B.
1” Solid Partition
A 1” insulated partition is required between
adjacent gas defrost cases that are on
different refrigeration systems. 1” partitions are
shipped installed as specified in the case
order. Make sure the partitioned case is being
installed in the proper location in the case line-
up. This assures proper refrigeration to all
parts of the case line-up.
Apply sealant to outside surface of partition
where the two surfaces of the adjoining case
will contact the partition.
See “General-UL/NSF I&S Manual” for
line-up assembly instructions.
After all case pull-ups have been secured,
all interior wall joint seams should be sealed
with duct tape.
Plexiglas Partition
A plexiglas plug partition is required on
adjacent electric defrost cases that are on
different refrigeration systems. These
partitions can be installed after the cases have
been joined.
1. Install partition brackets (1) at case joint
on front, center and/or rear case wall (2)
with screws 3)
2. Slide plexiglas partitions (4) into partition
brackets (1).
Trim Installation/Alignment
See “General-UL/NSF I&S Manual” for
bumper, color band, raceway and kickplate
installation.
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, posi-
tion kickplate corner trim (2) over both ends
of the kickplates (1) and secure with screws.

Refrigeration Procedures
See “General-UL.NSF I&S Manual” for gen-
eral system, control and superheat infor-
mation.
Optional Dual Temperature Control
The dual temperature control unit is a factory
installed option. This control allows the user
to easily switch from medium to low tempera-
ture operation by flipping a switch. The dual
temperature control consists of an EPR valve
in the suction line coming off the evaporator.
The EPR valve can be bypassed with a sole-
noid controlled bypass line around it. The
toggle switch opens or closes this solenoid.
When the solenoid is open, the evaporator is
connected directly to the compressor suction
that allows for low temperature operation.
When the solenoid is closed, the evaporator
must operate through the EPR valve which
has been preset to the desired medium
temperature.
EXAMPLE: R-404A system with 12 psig
of suction pressure. With the suction line
solenoid open, the coil pressure operates at
12 psig with a temperature of -29°F. When
the toggle switch is flipped, the solenoid
closes directing the flow through the EPR
valve. If the EPR valve is set for 48 psig, the
evaporator will see a coil temperature of 12°F
and will operate at a discharge air tempera-
ture of about 22°F.
When gas defrost is used, an additional
check valve is mounted around the EPR valve
to allow reverse flow for the defrosting gas. A
fan delay is also connected with gas defrost
to cycle the fans off, but only during the
medium temperature mode.
Electrical Procedures
Electrical Considerations
CAUTION
Make sure all electrical connections are
tight. This prevents burning of electrical
terminals and/or premature component
failure.
NOTE
The raceway houses the electrical wiring
and components for the case. All raceway
covers will be shipped loose.
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 when
used for medium temperatures.
NOTE
With gas defrost, the fans will not start
until the coil temperature reaches 40°F at
the fan delay klixon.
Anti-Sweat Circuit
All cases have at least one anti-sweat heater
in each discharge air grid and return air grid.
Cases with glass have an additional anti-
sweat heater under the glass retainer. Anti-
sweat heaters are wired directly to the main
power supply so they can operate at all
times.
Installation & Service Manual
NFNX, NCNX, NFNGX,
NCNGX
November, 2007 Page 7

Defrost Information
See “General-UL/NSF I&S Manual” for oper-
ational descriptions for each type of defrost
control.
Defrost Control Chart
NFNX/NCNX/NFNGX/NCNGX
Defrost
Defrost Defrosts Duration Term.
Type Per Day (Min) Temp.
Electric/FF 1 60 50°F
Electric/IC 1 36 50°F
Electric/MED 1 36 50°F
Gas/FF 2-3 20-25 55°F
Gas/IC 1 25-30 55°F
Gas/MED 2-3 16-20 55°F
E = Electric Defrost Termination
F/S = Electric Defrost Failsafe (Opt.)
G = Gas Defrost Fan Delay (Dual Temp)
A/S = Glass Anti-Sweat (Dual Temp)
Most klixons are located on the end of the
evaporator coil. The diagram shows the
location for each defrost type that uses a
klixon.
NOTE
The defrost termination klixon for gas
defrost is located at the bypass check
valve.
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 9
thru 12 will cover the NFN(G)X/NCN(G)X
case circuits and dual temp circuits with
electric and hot gas defrost options.
November, 2007Page 8
NFNX, NCNX, NFGNX,
NCNGX

NF(G)NX/NC(G)NX Domestic & Export (50 Hz) Case Circuits
Page 9November, 2007

November, 2007Page 10

Page 11November, 2007
Dual Temperature Control Circuits

November, 2007Page 12

NFNX, NCNX, NFNGX,
NCNGX
Installation & Service Manual
CLEANING AND SANITATION
Component Removal and
Installation Instructions for
Cleaning
Bottom Trays
1. Remove product from bottom of case.
2. Grasp and lift out each of the bottom trays
from the case interior and carefully
remove 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 location
in the case. After cleaning, replace product
thermometer bracket assembly and secure
with four screws.
Discharge Air Honeycomb
1. Remove screws and bottom retainer strip
from front or rear interior of case.
NOTE
Note position of the honeycomb grid
during removal so it can be reinstalled
the same way.
2. Remove honeycomb grid sections from
the front or rear duct.
CAUTION
Improper installation of the honeycomb
grid section could result in improper air
flow and/or poor refrigeration.
3. After cleaning, replace honeycomb grid
sections as they were removed and
secure with the bottom retainer strip and
screws.
Rear Air Duct Panels
1. Remove bottom trays and discharge air
honeycomb, see this page.
2. Remove mounting screws from rear duct
panel.
3. After cleaning, replace in reverse order.
Front Air Duct Panels
1. Remove bottom trays, see this page.
2. Remove screws and front air duct panels
from case.
3. After cleaning, replace in reverse order.
Corner Trim
1. See page 14 for corner trim removal
instructions.
2. After cleaning trim and cladding compo-
nents, replace front cladding and corner
trim components in reverse order using
instructions below and on page 14.
Front Cladding
1. Remove kickplates and raceway covers
from front of case.
2. Remove screws from bottom and top of
front cladding and pull cladding down to
remove it from behind the bottom edge of
the bumper retainer.
3. After cleaning, replace front rear cladding
and remaining components in reverse
order.
Page 13November, 2007

Corner Trim Replacement
(NFNX/NCNX/NFNGX/NCNGX with
Wrap Ends)
Since some of the corner trim fasteners are
hidden, remove the trim and hardware in the
following sequence.
1. Remove mounting screws, kickplate
corner trims (2) and kickplates (1) from
the case.
2. Remove raceway covers (3) from both
sides of the corner trim.
3. Remove four screws (4) and cladding
corner trim (5).
4. Remove two top screws (6) from raceway
corner trim (7), then lift and remove the
raceway corner trim (7) from the retainers
in the bottom slots.
5. Remove two bottom screws (8) and lift
off the bumper corner trim (9).
6. Replace bumper corner trim, raceway
corner trim, corner cladding trim, raceway
covers, kickplates and kickplate corner
trims in reverse order.
SERVICE INSTRUCTIONS
See “General-UL/NSF I&S Manual” for fan
blade and motor replacement, color band
and bumper replacement and raceway
cover removal instructions.
NSF Product Thermometer
Replacement
1. Remove four screws (1) and thermometer
bracket (2) from rear of case.
2. Remove two screws, nuts, washers and
the product thermometer (3) from the
thermometer 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 of
case with four screws (1).
November, 2007Page 14
NFNX, NCNX, NFGNX,
NCNGX

NFNX, NCNX, NFNGX,
NCNGX
Installation & Service Manual
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.
Models NFNX/NCNX/NFNGX/NCNGX
1. Remove bottom trays from case.
2. Unclip and lift up fan plenum (1).
3. Disconnect defective defrost heater (2)
and remove from mounting clips (3) and
case.
4. Install new defrost heater (4) in reverse
order.
5. Restore electrical power to case.
Page 15November, 2007
Anti-Sweat Replacement
WARNING
Shut off or disconnect power supply to
case before changing an anti-sweat.
Electrical power from wire ends could
damage other components and/or cause
personal injury or death.
Discharge Air Grid Anti-Sweat
(NFNX/NCNX)
1. Remove screws (1) retainer strip (2) and
discharge air grid (3) from interior of the
front case wall (4).
2. Remove mounting screws and support
assembly (5) from air grid opening.
3. Disconnect or cut the defective anti-sweat
wire (6) from the case wires.
4. Remove and replace the aluminum tape
and defective anti-sweat wire (6) from top
of support assembly (5).
5. Reconnect the anti-sweat wires and
replace the support assembly, discharge
air grid and mounting hardware.

Front Glass Replacement
(NFNGX/NCNGX)
1. Unplug or disconnect heated glass
panels and glass retainer anti-sweat
wires (1)
2. Remove two screws (2) and glass joint
trim (3) from both joints of the broken
glass (4).
3. Remove screws (5) and glass trim rail (6)
from top of glass (4).
4. Loosen rear retainer (7) and remove
broken glass (4) from glass retainer
assembly (8).
NOTE
Inspect the anti-sweat wire in glass retain-
er assembly. If wire is damaged or broken,
replace it before replacing the front glass.
5. Apply sealant tape to top and bottom
edge of new glass (4).
6. Position new glass (4) in glass retainer
assembly (8) and secure by tightening
rear retainer (7).
7. Install glass trim rail (7) with screws (6)
over top edge of new glass (4).
8. Install glass joint trim (3) with two screws
(2) over the joint areas of glass (4).
9. Reconnect heated glass panels and glass
retainer anti-sweat wires (1).
Discharge Air Grid Anti-Sweat
(NFNGX/NCNGX)
1. Remove screws and rear guard trim (1)
from top of rear case wall (2).
2. Disconnect or cut the defective anti-sweat
wire (3) from the case wires.
3. Remove and replace the aluminum tape
(4) and defective anti-sweat wire (3) from
top of rail and wire trim assembly (5).
4. Reconnect anti-sweat wires to case wires
and reinstall rear guard trim with screws.
Front Glass Retainer Anti-Sweat
(NFNGX/NCNGX)
See “Front Glass Replacement” on this
page for glass removal and glass retainer
anti-sweat replacement instructions.
November, 2007Page 16
NFNX, NCNX, NFGNX,
NCNGX

Installation & Service Manual
NFNX, NCNX, NFNGX,
NCNGX
November, 2007 Page 17
PARTS INFORMATION
Operational Parts List
(Models NFNX/NCNX/NFNGX/NCNGX)
Case Usage Domestic Export
Electrical Circuit 115 Volt 60 Hertz 220 Volt 50 Hertz
Case Size 8’ 12’ 8’ 12’
Fan Motor 5125532 5125532 5126572 5126572
5 Watt 5 Watt 5 Watt 5 Watt
Fan Motor Brackets 5213132 5213132 5213132 5213132
Fan Bracket Plate 9041077 9041077 9041077 9041077
Fan Blades (6” 21° 3B) 5105621 5105621 ---- ----
(6” 27° 3B) ---- ---- 5104294 5104294
Opt. ECM Fan Motor 9025002 9025002 ---- ----
8 Watt 8 Watt
Opt. ECM Fan Motor Brackets 5205279 5205279 ---- ----
Opt. ECM Fan Blades 9025138 9025138 ---- ----
(6” 25-1/4° 3B)
Anti-Sweat Heater Wire
(Discharge Air) 5124818 5124819 5081149 5081150
(NFN(G)X/NCN(G)X)
(glass retainer) 5218331 5218332 5081149 5081150
(NFNGX/NCNGX)
Electric Def. Heater 5960934 5960935 5088278 5088279
Electric Def. Term. Klixon 5125211 5125211 5125211 5125211
Opt. Gas Def. Fan Delay Klixon 9023503 9023503 9023503 9023503
Opt. Gas Def. Term. Klixon 9023508 9023508 9023508 9023508
NSF Product Thermometer 5967100 5967100 5967100 5967100
For information on operational parts not listed above contact the TYLER Service Parts
Department.

Cladding and Optional Trim Parts List
NFNX, NCNX
Item Description 8’ 12’
1 Screw (NFNX/NCNX) 5205439 (4) 5205439 (4)
2 Top Rr. Riser Joint Trim (NFNX/NCNX) 5207489 5207489
3 Bumper End Trim (per patch end) ---- color per order ----
4 Screw (per trim) 5205439 (4) 5205439 (4)
5 Return Air Duct Joint Trim (per duct) 5207491 5207491
6 Hand Rail Backer, Ptd. 9025316 9025316
7 Color Band Backer, Ptd. 9040223 9040223
8 Bumper Backer (per bumper) ---- color per order ----
9 Horizontal Joint Trim 5127503 5127503
10 Cladding Retainer (per case) 9300197 (8) 9300197 (8)
11 Raceway Cover Backer (per cover) ---- color per order ----
12 Raceway (per front of case) 9300218 9300219
13 Raceway Cover End Trim (per patch end) ---- color per order ----
14 Kickplate Support Assy. - Front 9043402 (3) 9043402 (4)
Kickplate Support Assy. - Rear (NFNX/NCNX) 9323073 (3) 9323073 (4)
15 Shoulder Screw (per kickplate support) 9025833 (2) 9025833 (2)
16 Metal Kickplate, Ptd. (per side) 9324399 9324406
Kickplate Joint Trim, Ptd. (per side) 9324550 9324550
Screw, Blk. (per side) 9324612 (5) 9324612 (6)
17 Screw 5183536 (8) 5183536 (12)
18 Raceway Cover Retainer 9023841 (4) 9023841 (6)
19 Raceway Cover (per side) ---- color per order ----
20 Screw 5183536 (36) 5183536 (52)
21 Front Cladding, Ptd. (per side) 9025637 9025638
22 Bumper (per side) ---- color per order ----
23 Color Band, Ptd. (per side) 9023798 9023800
24 Bumper Retainer/Hand Rail (per side) ---- color per order ----
November, 2007Page 18
NFNX, NCNX, NFGNX,
NCNGX

NFNX, NCNX, NFNGX,
NCNGX
Installation & Service Manual
Page 19November, 2007

NFNX, NCNX, NFGNX,
NCNGX
NFNGX, NCNGX
Item Description 8’ 12’
1 Glass Joint Trim (per side) 9301808 9301808
2 Screw (per trim) 5048626 (2) 5048626 (2)
3 Color Band Backer, Ptd. (per side) 9025982 9025982
4 Color Band, Ptd. (NFNGX/NCNGX) 9023798 9020982
5 Bumper End Trim (per patch end) ---- color per order ----
6 Bumper Backer (per bumper) ---- color per order ----
7 Bumper (per side) ---- color per order ----
8 Front Cladding, Ptd. (per side)(NFNGX/NCNGX) 9025637 9025638
9 Raceway Cover Backer (per cover) ---- color per order ----
10 Raceway Cover End Trim (per patch end) ---- color per order ----
11 Raceway Cover (per side) ---- color per order ----
12 Screw 5183536 (8) 5183536 (12)
13 Raceway Cover Retainer 9023841 (4) 9023841 (6)
14 Raceway Support - Front 9041321 (6) 9041321 (8)
Raceway Cover Support - Rear 9041325 (6) 9041325 (8)
15 Metal Kickplate, Ptd. (per side) 9324399 9324406
Kickplate Joint Trim, Ptd. (per side) 9324550 9324550
Screw, Blk. (per side) 9324612 (5) 9324612 (6)
16 Shoulder Screw 9025833 (6) 9025833 (8)
17 Kickplate Support Assembly - Front 9043402 (3) 9043402 (4)
Kickplate Support Assembly - Rear 9323073 (3) 9323073 (4)
(NFNGX/NCNGX)
18 Raceway (per front of case) 9300218 9300219
19 Front Cladding Retainer (per case) 9300197 (8) 9300197 (8)
20 Screw 5183536 (7) 5183636 (9)
21 Shoulder Screw 9025833 (36) 9025833 (52)
22 Bumper Retainer (per side) 9025058 9025061
23 Horizontal Joint Trim 5127503 5127503
24 Top Rear Joint Trim (NFNGX/NCNGX) 5207489 5207489
25 Screw (NFNGX/NCNGX) 5183536 (4) 5183536 (4)
November, 2007Page 20