Bohn PTN021L6A Installation Manual
Installation and
Operations Manual
H-IM-81E September 2010 Part No. 25001801
PRO3 Top Mount
Packaged Refrigeration System
For Indoor Applications
Table of Contents
1. Owner’s Installation Instructions
Performance/Electrical Data
Specications .................................................................................... 2
Dimensional Diagrams ..................................................................3
Space and Location Requirements
Recommended Unit Placement .................................................4
Rigging
Mounting............................................................................................5
Inspection
General Safety Information
Standard Installation Procedure ................................................6
2. Controllers
Controllers and Program Settings ...................................... 7-17
3. Service Information
System Troubleshooting Chart ................................................ 18
Replacement Parts ....................................................................... 19
4. Wiring Information
Electrical Wiring Diagrams ..................................................20-25
5. Warranty Information ........................................................ 26
© 2010 Heatcraft Refrigeration Products, LLC
PERFORMANCE / ELECTRICAL DATA
Installation and Operations Manual
1. Owner’s Operating Instructions
TABLE 1 Cooler Air Defrost Systems
Model
PTN026H6A^ 2,610 2,740 115/1/60 7.4 15 5.9 340 Yes 5-20R A 88 40 12 3,000
PTN031H6A^ 3,160 3,310 115/1/60 8.3 15 6.9 340 Yes 5-20R A 90 41 16 3,800
PTN042H6A^ 4,360 4,570 115/1/60 11.3 15 9.3 340 Yes 5-20R A 92 42 14 5,500
PTN050H6A^ 5,120 5,370 115/1/60 14.0 20 11.6 350 Yes 5-20R B 192 87 27 6,700
PTN050H6B^ 5,120 5,370 208-230/1/60 7.0 15 5.9 350 Yes 6-15R B 192 87 27 6,700
PTN067H6B^ 6,860 7,190 208-230/1/60 11.5 15 9.5 550 Yes 6-15R B 207 94 29 8,700
PTN076H6B^ 7,500 7,840 208-230/1/60 9.3 15 7.8 500 Yes 6-15R B 211 95 32 9,700
PTN104H6B^ 11,190 11,810 208-230/1/60 14.8 20 12.4 875 Yes 6-20R C 270 122 47 16,800
PTN104H6C^ 11,190 11,810 208-230/3/60 11.0 15 9.3 875 No – C 265 120 47 16,800
PTN133H6B^ 12,790 13,500 208-230/1/60 14.8 20 12.4 825 Yes 6-20R C 290 132 52 18,000
PTN133H6C^ 12,790 13,500 208-230/3/60 11.0 15 9.3 825 No – C 285 129 52 18,000
Model
PTN024M6A^ 2,610 115/1/60 7.4 15 5.9 340 Yes 5-20R A 88 40 12 3,000
PTN029M6A^ 3,160 115/1/60 8.3 15 6.9 340 Yes 5-20R A 90 41 16 3,800
PTN040M6A^ 4,360 115/1/60 11.3 15 9.3 340 Yes 5-20R A 92 42 14 5,500
PTN047M6A^ 5,120 115/1/60 14.0 20 11.6 350 Yes 5-20R B 192 87 27 6,700
PTN047M6B^ 5,120 208-230/1/60 7.0 15 5.9 350 Yes 6-15R B 192 87 27 6,700
PTN063M6B^ 6,860 208-230/1/60 11.5 15 9.5 550 Yes 6-15R B 207 94 29 8,700
PTN072M6B^ 7,500 208-230/1/60 9.3 15 7.8 500 Yes 6-15R B 211 95 32 9,700
PTN099M6B^ 11,190 208-230/1/60 14.8 20 12.4 875 Yes 6-20R C 270 122 47 16,800
PTN099M6C^ 11,190 208-230/3/60 11.0 15 9.3 875 No – C 265 120 47 16,800
PTN128M6B^ 12,790 208-230/1/60 14.8 20 12.4 825 Yes 6-20R C 290 132 52 18,000
PTN128M6C^ 12,790 208-230/3/60 11.0 15 9.3 825 No – C 285 129 52 18,000
BTUH @95°F
35° F Box
Temp
34° F Box Temp lbs. kg oz. BTUH
38° F Box
Temp
BTUH @95°F
Voltage MCA MOPD
TABLE 2 Cooler Electric Defrost Systems
Voltage MCA MOPD
Unit
Amps
Unit
Amps
Evaporator
CFM
Evaporator
CFM
Supplied
Plug
Supplied
Plug
Matching
NEMA
Receptacle
Matching
NEMA
Receptacle
Approx. Net
Weight
Fig.
lbs. kg oz. BTUH
Approx. Net
Weight
Fig.
Refrig.
Charge
R-404A
Refrig.
Charge
R-404A
Total
Heat of
Rejection
Total
Heat of
Rejection
TABLE 3 Freezer Electric Defrost Systems
Model
PTN019L6A^ 2,470 N/A N/A 115/1/60 13.0 20 13.0 340 Yes 5-20R A 101 46 14 4,000
PTN021L6A^ 2,680 2,160 1,340 115/1/60 14.5 20 12.3 350 Yes 5-20R B 213 97 26 4,300
PTN031L6B^ 2,680 2,160 1,340 208-230/1/60 7.6 15 6.5 350 Yes 6-15R B 213 97 26 4,300
PTN031L6B^ 4,220 3,190 2,060 208-230/1/60 13.8 15 11.6 550 Yes 6-15R B 221 100 28 6,300
PTN044L6B^ 5,870 4,530 3,400 208-230/1/60 15.9 20 13.3 520 Yes 6-15R B 225 102 29 9,900
PTN052L6B^ 7,000 5,360 3,910 208-230/1/60 18.1 20 15.3 900 No – C 275 125 45 10,900
PTN052L6C^ 7,000 5,360 3,910 208-230/3/60 12.2 15 13.0 900 No – C 270 122 45 10,900
PTN069L6B^ 9,060 7,100 5,250 208-230/1/60 23.8 30 20.0 875 No – C 280 127 47 15,300
PTN069L6C^ 9,060 7,100 5,250 208-230/3/60 15.9 20 14.2 875 No – C 275 125 47 15,300
0° F Box
Temp
95°F Ambient
-10° F
Box Temp
-20° F
Voltage MCA MOPD
Box Temp
Unit
Amps
Evaporator
CFM
Plug
Supplied
Matching
NEMA
Receptacle
Approx.
Net
Weight
Fig.
lbs. kg oz. BTUH
Refrig.
Charge
R-404A
Total
Heat of
Rejection
^This space may be blank or completed with an H designation indicating PSC motors, or an E for EC Motors on Evaporators
2
PRO3 Top Mount Packaged Refrigeration System | Indoor
DIMENSIONAL DIAGRAMS
Figure A. Small Cabinet Dimensions (See Reference on page 2)
14 1/2" x 20 3/4" panel opening required for evaporator section of small cabinet sizes.
Figure B. Medium Cabinet Dimensions (See Reference on Page 2).
25" x 25" panel opening required for evaporator section of medium cabinet sizes.
1. Owner’s Operating Instructions
Figure C. Large Cabinet Dimensions (See reference on Page 2).
25" x 38 1/2" panel opening required for evaporator section of large cabinet sizes.
3
Installation and Operations Manual
Space and Location Requirements
For PTN models.
1. Owner’s Operating Instructions
The most important consideration which must be taken into account
when deciding upon the location of air-cooled equipment is the provision
for a supply of ambient air to the condensing unit. Ignoring this essential
requirement will result in higher condensing pressure and contribute
to poor operation or potential equipment failure. Units must not be
located in the vicinity of steam, hot air or fume exhausts. Adequate
air circulation through the condensing unit is critical to ensure proper
equipment operation. Improper installation can damage the unit and will
void the warranty. penthouse-style packaged units are designed
for indoor use only in ambient temperatures of 50°F to 100°F. The unit
cabinet is not approved for weather tight applications.
Another important consideration is that the unit should be mounted
away from noise sensitive spaces and must have adequate support to
avoid vibration and noise transmission into the building. Storage should
not be allowed on top of walk-in structure. Unit must not be enclosed
in an unventilated space.
Figure 1.
PTN models
Minimum 2" clearance from
opening to adjacent wall. No
storage is allowable on top of
walk-in structure.
IMPORTANT: Ventilation air
must be provided for the
condensing unit.
Structure must not be masked
to building ceiling, blocking air
ow to unit.
System Space and Location Requirements for
Side View
Allow 2 feet
clearance above
unit to remove
top panel and
to allow service
access.
Mounting rails
may be used to
attach unit to
ceiling.Throughbolts should
be insulated or
non-conductive
to prevent
sweating.
Recommended Unit Placement
Some general rules for the evaporator section placement which
must be followed are:
1. Ensure that the structural integrity of the box can
withstand the weight of the top mounted equipment.
2. The air pattern must cover the entire room.
3. NEVER locate the evaporator section over doors.
4. Location of aisles, racks, etc. must be known.
5. Never remove or unlock any panel cam-locks to
install top mounted equipment.
The size and shape of the storage will generally determine the type
and number of units to be used and their location.
Top View
One
Evaporator
Airow
System
Evaporator
Section
Compressor
Section
W
Min.
Evaporator
Section
Compressor
Section
2 x Width
Min.
Evaporator
Section
Compressor
Section
W
Min.
Multiple units must be spaced
properly to provide adequate air
circulation.
Top View
Two Systems
Evaporator
Airow
Evaporator
Airow
PTN Models
NOTE: Always avoid
W = Unit Width
placement of units
directly above doors
and door openings.
4
PRO3 Top Mount Packaged Refrigeration System | Indoor
Rigging
Rigging holes are provided on all medium and large cabinet
models. Caution should be exercised when moving these
units. To prevent damage to the unit housing during rigging,
cables or chains used must be held apart by spacer bars. The
mounting platform or base should be level and located so as
to permit free access of supply air.
Access Requirements
Provide adequate space at the compressor end of the unit for
servicing. Provide two (2) feet of space above unit for service.
Trim Ring Installation Detail
Mounting
The system requires an opening in the ceiling to the dimensions stated on page 3. Mounting rails are located at both
ends of the chassis. Mounting rails may be used to attach
unit to ceiling. Through-bolts should be insulated or nonconductive to prevent sweating. The chassis is weather
stripped around the air grille and will seal to the box roof.
The trim ring (shipped loose), when provided, should be
installed around the air diuser when secured with the
hardware provided. Be sure to adhere to your local standard
construction codes.
1. Owner’s Operating Instructions
Evaporator Grill
Trim Pieces (4)
Overlap as Shown
Ceiling of Walk-in.
Self Drilling Screw
5
Inspection
Installation and Operations Manual
1. Owner’s Operating Instructions
1. Each shipment should be carefully checked against the bill
of lading.
2. The shipping receipt should not be signed until all items listed
on the bill of lading have been accounted for.
3. Check packaging for signs of damage.
4. Any shortage or damages should be immediately reported to
the delivering carrier.
5. Damaged material becomes the delivering carrier’s
responsibility, and should not be returned to the manufacturer
unless prior approval is given to do so.
6. When unpacking the system, care should be taken to
prevent damage.
7. Avoid removing the shipping base until the unit has been
moved to the nal destination.
8. Complete warranty return card for each unit and mail to
Heatcraft Refrigeration Products.
General Safety Information
1. Installation and maintenance to be performed only by a
licensed contractor.
2. Ensure that the structural integrity of the box can withstand
the weight of the (See page 2, Table 3 for unit weights).
3. Avoid contact with sharp edges and coil surfaces. They are a
potential injury hazard. Wear gloves during moving and rigging.
4. Make sure all power sources are disconnected before any
service work is done on units.
Standard Installation Procedure
PTN Models
For Indoor Use Only
1. Inspect packaging for shipping damage.
Open package and inspect unit for concealed damage.
2. Review the space and location requirements on page 4.
3. Provide a nished opening in the box ceiling, to the
appropriate dimensions and structural strength as stated on
page 2, Table 3.
4. DO NOT remove or disengage any box cam-locks in order
to install the
TABLE 4 Control Factory Default Settings
PTT
Models
H - Cooler Models
Air Defrost
M - Cooler Models
Electric Defrost
L - Freezer Models
Electric Defrost
unit.
Temperature
Set Points
Defrost
Start Times
38˚F 4 / day 60 min. – – 38˚F 3
34˚F 4 / day 40 min. 2 min. 2 min. 65˚F 2
-10˚F 4 / day 40 min. 2 min. 2 min. 65˚F 1
5. Clean the roof of the box to provide a good sealing
surface for the unit weatherstrip. Refer to box
manufacturer’s instructions for any procedures or processes
necessary to ensure the integrity of the exposed foam in the
panels is not compromised.
6. Check the mounting surface with a level.
a surface that is within 1° of level or better and no more
than a 5/8" drop per 3 feet (17mm drop per meter).
7. For walk-in boxes with aluminum top panels, it is
recommended that a thermal break be placed on the roof
adjacent to the opening to prevent the possibility of sweating.
8. Place the unit gently into the provided opening with the
evaporator air ow directed toward the door (See page 4).
Be careful not to damage the grill during installation.
9. Ensure that the condenser air ow is not obstructed.
10. Install the trim around the inside opening with the
hardware provided.
11. Connect unit to power supply using the cord with plug, if
provided, or hard wire. Adhere to local electrical/wiring codes.
IMPORTANT:
• Do not use extension cords to connect unit to power.
Plug-in to grounded three prong outlet.
•
• Do not remove grounding prong.
• Do not use a power adapter.
12. Apply power to unit. All controls are preset to factory
default settings (See Table 4).
13. Check unit for proper operation.
14. To change defaults as a group follow these steps:
1. Press Set button and hold in until the display ashes "PS".
2. Press the Set Button and the display will change to "0" and will
begin to ash.
3. Press the up button until "22" is displayed.
4. Press the Set button.
5. Press the down button 2 times. "EZY" will be displayed.
6. Press the Set button.
7. Select the proper number for the model needed by pressing
the up or down key.
• 1 - L Low temperature model
• 2 - M Med temperature model
• 3 - H High temperature model
8. Press Set and wait for unit to return out of programming mode.
9. Disconnect Power
10. Press the Set Button while turning unit On
11. "CE" should display to verify programming display
Defrost Duration
(Maximum)
Drip
Time
Fan
Delay
Defrost Termination
Set Point
units require
EZY
Default
6
PRO3 Top Mount Packaged Refrigeration System | Indoor
Refrigeration/Defrost Sequence of Operation
The sequence of operation varies depending on the model that has been installed. The three basic models are Low Temperature, Medium
Temperature, and High Temperature models. The particular model can be determined by the seventh digit of the model number. See Tables
1-3 for details and settings.
Control of the refrigeration and defrost system is provided by the Carel controller along with a space (box) temperature sensor and a coil
(defrost) temperature sensor. The controller will control on and o switching for the compressor, condenser fan motor(s) (cycles with the
compressor), evaporator fan motor(s) and electric defrost heaters for electric defrost.
The Carel controller is pre-programmed for all three applications. This is done with the use of the parameter list. The parameter list can be
changed by entering the Carel Controller and changing the “EZY” setting. See page 13.
TABLE 5 Model PTN | Low Temperature Models | EZY SETTING =1
SET POINT IS 10° F
These models are intended for freezer applications and require electric defrost.
2. Controllers
Status Compressor
Display alternates “OFF” and Room
O
Temperature
On Automatic Defrost on start up O O O On
Defrost Sensor reaches 65° F and
On
defrost is terminated
On Cooling cycle initiated - Drip Time O O O O
Drip Time of 2 minutes ends - coil
On
freeze begins
Evaporator fans start after 2 min
On
delay
Box Temperature (-10.1° F) is
On
satised
On Box Temperature rises to -8.0° F On On On O
Defrost Initiated (Manually or 6
On
hour counter)
On Cooling cycle initiated - Drip Time O O O O
Drip Time of 2 minutes ends - coil
On
freeze begins
Evaporator fans start after 2 min
On
delay
O O O O
O O O O
On On O O
On On On O
O O On O
O O O On Electric Defrost
On On O O
On On On O
Condenser
Fans
Evaporator
Fans
Defrost
Heaters
Notes
If unit shows “OFF”, depress
the “^” button and hold for
three seconds.
If coil temperature is below
65° F. If it is above, defrost is
not initiated. Drip Time and
Freeze Time are ignored.
System Timer Begins/ 2 min
drip time
Compressor starts and
evaporator fans delay for 2
minutes to freeze the coil.
2° F Dierential, Minimum
Compressor O time is 4
minutes
System Timer Begins/ 2 min
drip time
Compressor starts and
evaporator fans delay for 2
minutes to freeze the coil.
7
Installation and Operations Manual
TABLE 6 Model PTN | Medium Temperature Models | EZY SETTING =2
SET POINT IS 34° F
These models are intended for cooler applications and have electric defrost. These models are intended for coolers that may be operated at a
lower saturated suction temperature and require electric defrost to clear the coil.
2. Controllers
Status Compressor
Display alternates “OFF” and Room
O
Temperature
On Automatic Defrost on start up O O O On
Defrost Sensor reaches 65° F and
On
defrost is terminated
On Cooling Cycle initiated - Drip Time O O O O
On Drip Time of 2 minutes ends On On On O
On Box Temperature (33.9 F) is satised O O On O
On Box temperature rises to 36° F On On On O
Defrost Initiated (manually or 6
On
hour counter)
Defrost terminated by temperature
On
65° F
On Drip Time of 2 minutes ends On On On O
O O O O
O O O O
O O O On Electric Defrost
On On On O
Condenser
Fans
Evaporator
Fans
Defrost
Heaters
Notes
If unit shows “OFF”, depress
the “^” button and hold for
three seconds.
If coil temperature is below
65° F. If it is above, defrost is
not initiated. Drip Time and
Freeze Time are ignored.
System Timer Begins/2 min
drip time
Compressor and evaporator
fans start
2° F Dierential, Minimum
Compressor O Time is 4
minutes
Compressor starts and
evaporator fans delay for 2
minutes to freeze coil
TABLE 7 Model PTN | High Temperature Models | EZY SETTING =3
SET POINT IS 38° F
These models are intended for cooler applications and have air (O-cycle) defrost. The controller is pre-programmed for 4 defrost per day.
These periods are reprogrammable.
Status Compressor
Display alternates “OFF” and Room
O
Temperature
On Cooling Cycle initiated On On On O System Timer Begins
Box Temperature (37.9° F) is
On
satised
On Box temperature rises to 40.0° F On On On O
Defrost Initiated (Manually or 6
On
hour counter)
Defrost Terminated by time of 40
On
minutes
O O O O
O O On O
O O On On Air Defrost
On On On O
Condenser
Fans
Evaporator
Fans
Defrost
Cycle
Notes
If unit shows “OFF”, depress
the “^” button and hold for
three seconds.
2° F Dierential, Minimum
Compressor O Time is 4
minutes
8
PRO3 Top Mount Packaged Refrigeration System | Indoor
Programming the PJEZC Carel
Electronic Controller
Reprinted with permission from Carel.
The Carel PJEZC control is a fully congurable electronic refrigeration
controller. The Top Mount packaged refrigeration system uses the
Carel controller on all three temperature designated models. The
models dier by a pre-programmed parameter list that is specic
for each application.
There are two levels of programming with the C controller. The rst
level can be accessed through the keypad. Set Point (st), Interval
between defrost (do), Maximum Defrost Duration (dP), and Dripping
Time (dd) are examples of rst level parameters. Second level
parameters can be accessed by entering a password. See “Modifying
Parameters” (page 15).
Installation and Removal
PANEL INSTALLATION FROM THE FRONT USING SCREWS
• The thickness of the fastening panel must not exceed 3 mm;
• Remove the front frame and make sure that the two catches
are in place (these must not protrude from the outline of the
drilling template). If necessary, unscrew the two screws. Do not
unscrew excessively, the screws must not be detached from the
front panel (phase 1);
• Insert the instrument in the opening in the panel and hold it in
position by the centre of the front panel (phase 1);
• Using the screwdriver, tighten the bottom screw 90°, the catch
must come out of its slot and click onto the panel, then tighten
until the front panel is secure; Do not over-tighten, when the
front panel is secured blocks simply make another ½ turn to
compress the gasket; If the catch does not click onto the panel,
unscrew the screw, applying pressure at the same time with
the screwdriver so that the catch moves back. Do not unscrew
too much, the head of the screw must not be raised from the
surface of the front panel (phase 2);
• Repeat the same operation for the top screw (phase 2);
• Apply the front frame (phase 3).
2. Controllers
* Do not over-tighten the screws.
DISMANTLING USING THE SCREWS FROM THE FRONT
• Unclip the front frame;
• Unscrew the bottom screw, at the moment the front panel
detaches from the panel keep pressure on the screw and
unscrew a further 90° to make the catch go back into its slot;
• Repeat for the top screw;
• Remove the instrument from panel, keeping it horizontal
9
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