RefPlus LS Series User manual

R
COMMERCIAL
WALK-IN EVAPORATORS
LS-LV-LA-LP SERIES
INSTALLATION, OPERATION
AND MAINTENANCE
MANUAL
AWEF
REGISTERED

R

3
R
TABLE OF CONTENTS
1. SAFETY CONSIDERATIONS.............................................................................................................................. 4
2. INTRODUCTION ..................................................................................................................................................... 4
3. PRODUCT DESCRIPTION .................................................................................................................................. 4
4. NOMENCLATURE .................................................................................................................................................. 5
5. HANDLING AND RIGGING.................................................................................................................................. 6
5.1 STANDARD UNIT WEIGHTS ................................................................................................................................. 7
5.2 R-448A OPERATING CHARGES............................................................................................................................ 7
6. INSTALLATION ........................................................................................................................................................ 8
6.1 COMPLETE PRE-INSTALLATION INSPECTION ................................................................................................... 8
6.2 INSTALLATION LOCATION .................................................................................................................................... 8
6.3 MOUNTING............................................................................................................................................................. 8
6.4 CONNECTING DRAIN LINE ................................................................................................................................... 10
6.5 CONNECTING REFRIGERANT LINES .................................................................................................................. 10
6.6 CONNECTING THE EXPANSION VALVE .............................................................................................................. 11
6.7 BULB LOCATION AND INSTALLATION.................................................................................................................. 11
6.8 SUCTION LINE CONSTRUCTION ......................................................................................................................... 12
6.9 EXTERNAL EQUALIZER LOCATION ..................................................................................................................... 14
6.10 FIELD WIRING...................................................................................................................................................... 14
7. START UP.................................................................................................................................................................. 15
7.1 LEAK TESTING AND EVACUATION....................................................................................................................... 15
7.2 FAN MOTORS......................................................................................................................................................... 15
7.3 FAN DELAY DEFROST TERMINATION CONTROL............................................................................................... 15
7.4 FAN DELAY DRAIN PAN CONTROL ...................................................................................................................... 15
7.5 ADJUSTING EVAPORATOR PRESSURE AND SUPERHEAT ............................................................................... 15
8. DEFROST SYSTEM............................................................................................................................................... 16
8.1 AIR DEFROST UNITS. ........................................................................................................................................... 16
8.2 ELECTRIC DEFROST UNITS................................................................................................................................. 16
8.3 REVERSE CYCLE HOT GAS DEFROST UNITS. .................................................................................................. 16
8.4 THREE PIPE HOT GAS DEFROST UNITS ............................................................................................................ 16
9. SERVICE.................................................................................................................................................................... 17
9.1 INITIAL INSPECTION ............................................................................................................................................. 17
9.2 PERIODIC INSPECTIONS...................................................................................................................................... 17
9.3 CLEANING .............................................................................................................................................................. 17
10. TROUBLESHOOTING CHART ........................................................................................................................ 18
11. REPLACEMENT PARTS..................................................................................................................................... 18
12. EVAPORATOR START-UP REPORT FORM............................................................................................... 19
13. WIRING DIAGRAMS............................................................................................................................................ 21
13.1 LSA-LVA-LAA-LPA MODELS - AIR DEFROST ...............................................................................................................21
13.2 LVA-LAA-LPA MODELS - AIR DEFROST .......................................................................................................................24
13.3 LSE-LVE-LAE-LPE MODELS - ELECTRIC DEFROST...................................................................................................27
13.4 LVE-LAE-LPE MODELS - ELECTRIC DEFROST...........................................................................................................29
13.5 LSR-LST MODELS - HOT-GAS DEFROST ....................................................................................................................31
13.6 LV-LA-LP MODELS - HOT-GAS DEFROST....................................................................................................................32
13.7 LS-LV-LA-LP MODELS - HOT-GAS DEFROST ..............................................................................................................34
14. PIPING DIAGRAMS............................................................................................................................................. 35
14.1 TYPICAL PIPING DIAGRAM FOR LSR-LST MODELS - HOT-GAS DEFROST (STANDARD)......................................35
14.2 TYPICAL PIPING DIAGRAMS FOR LSR-LST MODELS - HOT-GAS DEFROST
(WITH OPTIONAL TXV MOUNTED)..................................................................................................................... 35
14.3 TYPICAL PIPING DIAGRAM FOR ALL LV-LA-LP MODELS - HOT-GAS DEFROST (STANDARD) ..............................36
1 4.4 TYPICAL PIPING DIAGRAMS FOR ALL LV-LA-LP MODELS - HOT-GAS DEFROST
(WITH OPTIONAL TXV MOUNTED)..................................................................................................................... 35
GENERAL WARRANTY............................................................................................................................................. 37

4
R
1. SAFETY CONSIDERATIONS
Installing, starting up, and servicing equipment can be
hazardous due to system pressures, electrical components
and equipment location (elevated structures, etc.). Only
trained and qualied installers as well as service technicians
should install, start-up and service this equipment.
When working on the equipment, observe precautions found
in the literature, on the tags, stickers, and labels attached to
the equipment.
Follow all safety codes. Wear safety glasses and work gloves.
Keep quenched cloths and re extinguisher nearby when
brazing. Use care in handling, rigging, and setting bulky
equipment. Units are factory pressurized with dry air at
approximately 40 psig. Be careful when opening the circuit.
If no pressure is present, check for leaks or loose valves. Work
in a well-ventilated location when using refrigerant.
WARNING! Before installation, always check to
make sure main power to systems is OFF.
Electrical shock can cause personal injury or
death.
2. INTRODUCTION
These instructions describe installation, start-up and service
of refrigeration duty, commercial evaporator units.
3. PRODUCT DESCRIPTION
LS,LV,LA and LP series are ceiling-mounted commercial,
AWEF registered, walk-in evaporators. Each unit includes
a wiring diagram that meets the customer’s requirements.
The wiring diagram displays all the components with all the
necessary protections and controls.
LS series are single-coil construction for an air distribution
towards the centre of the cooler and freezer. The fans draw
air from the evaporator coil and discharge it through the fan
guards at the front of the unit.
LV, LA and LP series are dual-coil construction for an equal
air distribution on both sides of the unit. The fans draw air
upward through the fan guards and discharge it through each
evaporator coil.
For all series, coils are manufactured with seamless deoxidized
heavy wall smooth copper tubes and aluminum plate ns.
For a maximum heat transfer, the tubes are mechanically
expanded into self-spaced plate ns with full collar for a
permanent bond.
Connections and bends are brazed with high-temperature
brazing alloy. Coils are factory leak tested at 300 psig and
purged with a -40°F dew point dry air. Coils are ready for
HFC, HFO and CO 2 refrigerants and are provided with sweat
type connections (several coating materials are available).
All units are modular design and use a minimum amount of
parts for easy part replacement and availability.
Controls, motors and heaters are factory wired to provide a
fully automatic operation of the unit.
Casing for LS, LA and LP models is made from heavy-gauge
stucco aluminum. The LV model has a heavy-gauge painted
aluminum casing.
All units come with stainless steel or plated hardware for a
lightweight and rustproof assembly. Other optional materials
are available.
LS,LA and LP series are provided with removable
3/4” MPT drain ttings for easy installation and cleaning when
installed with a drain union. The LV series is provided with
removable 7/8” female pipe thread drain ttings.
All units are equipped with twin-speed or high-speed EC fan
motors.
All standard LSE, LVE, LAE and LPE models are provided
with a defrost termination switch, heater safety thermostat
and fan delay thermostat. All units feature incoloy low watt
density tubular heaters. They are embedded within the coil for
positive defrost and high-energy efciency. This allows heat
gain reduction in coolers and freezers. They are available for
208-240/3/60, 480/3/60 and 575/3/60. 240/3/60 and 480/3/60
can be used on 200/3/50 and 380/3/50. All units use proper
number of heaters for an even phase loading. Refer to the
wiring diagrams (Section 13) for heater arrangement.
LVG,LVH,LAG,LAH,LPG and LPH models are provided
with fan motor contactors, heater contactors, drain pan heater
safety, fan delay and defrost termination thermostats. These
thermostats sense the coil temperature and control the
operation of fans and heaters. All units feature incoloy low
watt density tubular heaters in the drain pan.
The LST model is provided with fan delay, defrost termination
thermostat and hot-gas defrost pan grid.

5
R
4. NOMENCLATURE
OPTIONS #2A
W = Water / glycol mixture
VOLTAGE
1 = 120/1/60
2 = 240/1/60
5 = 208-240/3/60
8 = 575/3/60
9 = 480/3/60
2350 = 235 000 BTU/H
043 = 4300 BTU/H
MODEL NUMBER / NOMINAL CAPACITY @ 10°FTD
UNIT SERIES
LA = Low air walk-in
LP = Low profile walk-in
LS = Low silhouette walk-in
LV = low velocity walk-in
DEFROST TYPE
MODEL GENERATION
A = Air defrost
E = Electric defrost
G = Reverse cycle defrost with electric drain pan
H = Three-pipe defrost with electric drain pan
R = Reverse cycle defrost with hot gas drain pan
T = Three-pipe defrost with hot gas drain pan
0-6 = Conventional refrigerant generation
7-9 = CO2generation
OPTIONS
A = AWEF compliant
L = Low speed
S AL 235 L0 8 W
- -

6
R
5. HANDLING AND RIGGING
Good handling and rigging practices must be followed to
protect units from damage. Having proper handling equipment
at the job site is most important and it should be planned.
In the US, follow OSHA 1926.251 standard for Rigging
Equipment and Material Handling.
In Canada, follow your province’s requirements for
hoisting and rigging.
Improper rigging of a load or a rigging failure
can expose riggers and other workers nearby to
a variety of potential hazards.
Always lift units secured to the fork lift to
prevent it from slipping off.
Your unit is shipped crated on a pallet. This prevents any
damage to the drain pan underneath. To fasten the unit to the
ceiling, it is recommended to leave it on the pallet in order to
securely lift it up with a motorized or hand-operated forklift.
Do not use a forklift against sheet metal panels or coils. Make
sure forks extend the entire length of the unit and against a
structural part or frame.
On LS models, use the provided support brackets to bolt the
unit to the ceiling. On LV, LA and LP models, use the holes
provided in the unit's frame, as shown below.
This procedure is for reference only. Rigging and handling
procedures will vary from one machine to another and from
one site to another.
Equipment handling and rigging should be
carried out by a certied operator.
LS
LV
LA-LP
Figure 1 Securing unit to ceiling
HANDLING AND RIGGING

7
R
STANDARD UNIT WEIGHTS / OPERATING CHARGES
5.1 STANDARD UNIT WEIGHTS (LB.)
MODEL SHIPPING
WEIGHT MODEL SHIPPING WEIGHT MODEL SHIPPING WEIGHT
LSA-0451 26 LSE-0431 27 LSR/LST-0431 28
LSA-0551 29 LSE-0521 30 LSR/LST-0521 31
LSA-0651 30 LSE-0621 31 LSR/LST-0621 32
LSA-0751 38 LSE-0721 40 LSR/LST-0721 41
LSA-0921 42 LSE-0881 44 LSR/LST-0881 45
LSA-1081 42 LSE-1031 44 LSR/LST-1031 45
LSA-1301 47 LSE-1241 49 LSR/LST-1241 51
LSA-1401 58 LSE-1331 60 LSR/LST-1331 63
LSA-1601 67 LSE-1521 70 LSR/LST-1521 72
LSA-1901 68 LSE-1801 71 LSR/LST-1801 73
LSA-2301 88 LSE-2201 92 LSR/LST-2201 95
LSA-2601 89 LSE-2401 93 LSR/LST-2401 96
LSA-3201 108 LSE-3001 112 LSR/LST-3001 116
LSA-3901 127 LSE-3701 132 LSR/LST-3701 136
MODEL SHIPPING
WEIGHT MODEL SHIPPING WEIGHT MODEL SHIPPING WEIGHT
LVA-0700 110 LVE-0700 120 LVG/LVH-0700 114
LVA-0800 118 LVE-0800 130 LVG/LVH-0800 122
LVA-0900 141 LVE-0900 154 LVG/LVH-0900 145
LVA-1200 159 LVE-1200 177 LVG/LVH-1200 165
LVA-1500 179 LVE-1500 197 LVG/LVH-1500 185
LVA-1900 195 LVE-1900 217 LVG/LVH-1900 201
LVA-2400 254 LVE-2400 282 LVG/LVH-2400 262
LVA-2700 298 LVE-2700 325 LVG/LVH-2700 306
LVA-3000 323 LVE-3000 356 LVG/LVH-3000 331
LVA-3600 352 LVE-3600 390 LVG/LVH-3600 360
LVA-4200 396 LVE-4200 440 LVG/LVH-4200 404
MODEL SHIPPING
WEIGHT MODEL SHIPPING WEIGHT MODEL SHIPPING WEIGHT
LAA-0601 96 LAE-0571 107 LAG/LAH-0571 99
LAA-0751 113 LAE-0721 126 LAG/LAH-0721 116
LAA-0951 120 LAE-0901 133 LAG/LAH-0901 123
LAA-1201 158 LAE-1141 174 LAG/LAH-1141 165
LAA-1501 168 LAE-1431 184 LAG/LAH-1431 173
LAA-1801 215 LAE-1701 241 LAG/LAH-1701 222
LAA-2401 265 LAE-2301 298 LAG/LAH-2301 277
LAA-2801 310 LAE-2701 350 LAG/LAH-2701 335
LAA-3001 255 LAE-2861 288 LAG/LAH-2861 268
LAA-3601 302 LAE-3431 342 LAG/LAH-3431 327
LAA-4201 302 LAE-4001 335 LAG/LAH-4001 315
LAA-4601 355 LAE-4381 395 LAG/LAH-4381 380
MODEL SHIPPING
WEIGHT MODEL SHIPPING WEIGHT MODEL SHIPPING WEIGHT
LPA-0601 95 LPE-0571 105 LPG/LPH-0571 96
LPA-0701 105 LPE-0671 118 LPG/LPH-0671 107
LPA-0801 110 LPE-0761 123 LPG/LPH-0761 112
LPA-1001 145 LPE-0951 161 LPG/LPH-0951 149
LPA-1201 152 LPE-1151 168 LPG/LPH-1151 156
LPA-1601 195 LPE-1521 221 LPG/LPH-1521 200
LPA-2001 240 LPE-1901 273 LPG/LPH-1901 247
LPA-2101 168 LPE-2001 184 LPG/LPH-2001 172
LPA-2401 282 LPE-2301 322 LPG/LPH-2301 290
LPA-2801 216 LPE-2701 242 LPG/LPH-2701 221
LPA-3501 266 LPE-3341 299 LPG/LPH-3341 273
LPA-4201 315 LPE-4001 355 LPG/LPH-4001 323
5.2 R-448A OPERATING CHARGES (LB.)
MODEL OPERATING
CHARGE MODEL OPERATING CHARGE MODEL OPERATING CHARGE
LSA-0451 0.85 LSE-0431 0.71 LSR/LST-0431 0.85
LSA-0551 1.29 LSE-0521 1.15 LSR/LST-0521 1.29
LSA-0651 1.29 LSE-0621 1.15 LSR/LST-0621 1.29
LSA-0751 1.27 LSE-0721 1.05 LSR/LST-0721 1.27
LSA-0921 1.9 LSE-0881 1.68 LSR/LST-0881 1.9
LSA-1081 1.9 LSE-1031 1.68 LSR/LST-1031 1.9
LSA-1301 2.31 LSE-1241 2.05 LSR/LST-1241 2.31
LSA-1401 2.22 LSE-1331 1.85 LSR/LST-1331 2.22
LSA-1601 3.34 LSE-1521 2.97 LSR/LST-1521 3.34
LSA-1901 3.34 LSE-1801 2.97 LSR/LST-1801 3.34
LSA-2301 4.36 LSE-2201 3.87 LSR/LST-2201 4.36
LSA-2601 4.36 LSE-2401 3.87 LSR/LST-2401 4.36
LSA-3201 5.38 LSE-3001 4.8 LSR/LST-3001 5.38
LSA-3901 6.43 LSE-3701 5.7 LSR/LST-3701 6.43
MODEL OPERATING
CHARGE MODEL OPERATING CHARGE MODEL OPERATING CHARGE
LVA-0700 3.17 LVE-0700 4.77 LVG/LVH-0700 3.17
LVA-0800 4.24 LVE-0800 6.72 LVG/LVH-0800 4.24
LVA-0900 4.58 LVE-0900 6.92 LVG/LVH-0900 4.58
LVA-1200 6.14 LVE-1200 9.69 LVG/LVH-1200 6.14
LVA-1500 6.04 LVE-1500 9.06 LVG/LVH-1500 6.04
LVA-1900 8.04 LVE-1900 12.66 LVG/LVH-1900 8.04
LVA-2400 10.03 LVE-2400 16.27 LVG/LVH-2400 10.03
LVA-2700 9.3 LVE-2700 14.52 LVG/LVH-2700 9.3
LVA-3000 12.37 LVE-3000 20.12 LVG/LVH-3000 12.37
LVA-3600 14.86 LVE-3600 24.55 LVG/LVH-3600 14.86
LVA-4200 17.68 LVE-4200 29.23 LVG/LVH-4200 17.68
MODEL OPERATING
CHARGE MODEL OPERATING CHARGE MODEL OPERATING CHARGE
LAA-0601 1.27 LAE-0571 0.83 LAG/LAH-0571 1.27
LAA-0751 2.29 LAE-0721 1.8 LAG/LAH-0721 2.29
LAA-0951 3.07 LAE-0901 2.58 LAG/LAH-0901 3.07
LAA-1201 3.36 LAE-1141 2.58 LAG/LAH-1141 3.36
LAA-1501 4.43 LAE-1431 3.7 LAG/LAH-1431 4.43
LAA-1801 5.8 LAE-1701 4.87 LAG/LAH-1701 5.8
LAA-2401 7.21 LAE-2301 5.99 LAG/LAH-2301 7.21
LAA-2801 8.57 LAE-2701 7.11 LAG/LAH-2701 8.57
LAA-3001 7.21 LAE-2861 5.99 LAG/LAH-2861 7.21
LAA-3601 8.57 LAE-3431 7.11 LAG/LAH-3431 8.57
LAA-4201 10.76 LAE-4001 9.6 LAG/LAH-4001 10.76
LAA-4601 12.86 LAE-4381 11.4 LAG/LAH-4381 12.86
MODEL OPERATING
CHARGE MODEL OPERATING CHARGE MODEL OPERATING CHARGE
LPA-0601 1.27 LPE-0571 0.83 LPG/LPH-0571 1.27
LPA-0701 1.56 LPE-0671 1.02 LPG/LPH-0671 1.56
LPA-0801 2.05 LPE-0761 1.56 LPG/LPH-0761 2.05
LPA-1001 2.24 LPE-0951 1.46 LPG/LPH-0951 2.24
LPA-1201 2.97 LPE-1151 2.24 LPG/LPH-1151 2.97
LPA-1601 3.9 LPE-1521 2.92 LPG/LPH-1521 3.9
LPA-2001 4.77 LPE-1901 3.6 LPG/LPH-1901 4.77
LPA-2101 4.43 LPE-2001 3.7 LPG/LPH-2001 4.43
LPA-2401 5.7 LPE-2301 4.29 LPG/LPH-2301 5.7
LPA-2801 5.8 LPE-2701 4.87 LPG/LPH-2701 5.8
LPA-3501 7.21 LPE-3341 5.99 LPG/LPH-3341 7.21
LPA-4201 8.57 LPE-4001 7.11 LPG/LPH-4001 8.57

8
R
6. INSTALLATION
6.1 COMPLETE PRE-INSTALLATION INSPECTION
Check all items against the bill of lading to make sure all
crates and boxes have been received. Check unit for possible
damage incurred during shipment. Check for concealed
damage. If there is any shortage or damage, le a freight
claim immediately with the transport company. Do
not return damaged equipment to the factory without prior
approval. A Return Material Authorization (RMA) must be
obtained in advance. Items returned without an RMA label
will be refused. Also verify that the nameplate electrical
requirements match the available power supply.
All RefPlus evaporators are pressurized with dry air. A
lack of pressure does not indicate a leak. Check the coil
for possible leaks before installing or returning the unit.
The following essential rules should be complied with
when installing the unit:
• All circuits, including controls and safety switches, must
be correctly connected according to the wiring diagram
supplied with the unit and/or found in this manual.
• The factory wiring cannot be modied without RefPlus'
written approval.
• All units and equipment must be installed with the
specied clearances.
• System piping must be in accordance with proper
refrigeration practices.
• Inert gas must be charged into the system piping during
brazing.
6.2 INSTALLATION LOCATION
All units should be installed ush against the ceiling. The
unit must be level in all directions to ensure proper drainage
of condensate. Refer to Figure 2 and Figure 3 for unit
clearance information.
When deciding on the location of the unit, consider the
following:
• Location of aisle racks
• Location relative to compressor for minimum pipe runs
• Location of condensate drains for minimum run
• The air pattern must cover the entire room
• Never locate units over doors or door openings
• Allow sufcient space between rear of unit and wall to
permit free return of air
IMPORTANT: Avoid placement of the unit directly above
doors and door openings where low temperature is being
maintained. Position the unit so the discharge air blows above
the doors. Install a bafe if door extends above the blower
level. Leave space equal to unit height between bottom of unit
and product. Do not stack product in front of fans.
LS units should be located in a position where the air discharge
is towards the door.
The coil face on units should be away from the wall by:
• LS models: 1/2 coil unit height minimum -
unit height recommended
• LV models: 2 ft minimum - 12 ft maximum
• LA-LP models: 3 ft minimum - 20 ft maximum
NOTE: Units with electric defrost require a minimum clearance
equal to the width (W) of the unit at the left end when
facing the fans to allow removal of defrost heaters,
as shown in Figure 2 and Figure 3.
6.3 MOUNTINGS
Most units can be mounted with either bolts or rod steel
hangers. When mounting unit to ceiling, use Table 1 below
to determine proper rod or bolt size. Use steel rods with a
minimum 9 Kpsi. This information should be used as reference
only.
STEEL ROD
OR BOLT
SIZE
MAXIMUM WEIGHT PER ANCHOR POINT
5/16" 200 lbs
3/8" 300 lbs
1/2" 550 lbs
Table 1 Bolt and rod size chart
The evaporator must be mounted level for proper condensate
draining. Adequate support must be provided to hold the
weight of the unit.
NOTE: The area above the unit must be sealed or
accessible to facilitate hand cleaning without the
use of tools in order to comply with National
Sanitation Foundation (NSF) Standard 7.
INSTALLATION

9
R
1/2 H min.
1 H recommended
3’ min.
(W for units
w/electric defrost)
(W for units
w/electric defrost)
Air
Flow
W
3’ min.
20’ max.
2’ min.
12’ max.
3’ min.
3’ min.
3’ min.
LS
LV-LA-LP
LV LA-LP
Figure 2 Single-evaporator clearance (H=Height of unit - W=Width of unit)
3’ min.
3’ min. 3’ min.
3’ min.
(W for units
w/electric defrost)
(W for units
w/electric defrost)
3’ min.
(W for units
w/electric defrost)
W min.
Air
Flow
Air
Flow
LS LS
1/2 H min.
1 H recommended
1/2 H min.
1 H recommended
LV-LA-LP LV-LA-LP
LV-LA-LP LV-LA-LP
W W
2’ min.
12’ max.
3’ min.
20’ max.
LV LA-LP
4’ min.
24’ max.
6’ min.
40’ max.
LV LA-LP
Figure 3 Multiple-evaporator clearance (H=Height of unit - W=Width of unit)
INSTALLATION

10
R
6.4 CONNECTING DRAIN LINE
A drain line union is recommended for ease of installation
and future servicing and should be located in close proximity
to the drain pan.
LV: A 7/8" ID removable drain coupling is supplied with each
unit.
LS,LA & LP are supplied with 3/4" MPT connections.
FOR ALL MODELS, connect the drain line as follows:
1. Replace the rubber gasket to prevent condensate
leakage.
2. Locate the union as close to the drain pan as possible.
3. Hand tighten the coupling as shown in Figure 4. DO NOT
use wrench to tighten coupling in place as this could
damage the gasket and cause leaks. Once the coupling
is in place, connect the drain pipe and tighten pipe using
two wrenches as shown. The use of two wrenches will
prevent the coupling from twisting and damaging the unit.
HAND TIGHTEN ONLY
LOCK COUPLING IN PLACE
WHILE TIGHTENING PIPE
Figure 4 Drain pan coupling
4. Sharply pitch the drain line and exit it through the
cooler with a short run.
5. Insulate and seal the drain line where it passes through
the wall.
6. Locate the drain traps in warm ambient air temperature
to prevent freeze-up.
Drain traps on low temperature units must be outside of
refrigerated enclosures. Properly protected from freezing,
copper or steel pipes should be used. Food approved plastic
can also be used for medium temperature coolers above 35°F
(2°C). The drain line must have a minimum of 4’’ per foot
pitch for proper drainage. The unit must be perfectly level in
two directions. The drain line should be at least as large as
the evaporator drain connection. All plumbing connections
should be made in accordance with local plumbing codes. All
condensate drain lines must be trapped and run to an open
drain. They must never be connected directly to the sewer
system. Traps in the drain lines must be in a warm ambiance.
We recommend a trap on each evaporator. Traps located
outside the building must be insulated and wrapped with a
drain line heater. When installing the heater, be sure to avoid
overlapping. The heater must be permanently energized. A
heat input of at least 20 W per linear foot of drain line for a
0°F (-18°C) room and 30 W per linear foot of drain line for a
-20°F (-29°C) room should be satisfactory. Always trap drain
lines individually to prevent vapour migration.
6.5 CONNECTING REFRIGERANT LINES
All refrigerant system components must be installed in
accordance with applicable local and national codes using
proper engineering practices. Refer to the piping diagrams
on page 36.
Use top quality refrigeration tubing that is internally free of
dirt, humidity or other contaminants. Unsealed tubing should
not be used. Long radius elbows are recommended.
Dry nitrogen must be swept through the lines while joints are
brazed to avoid oxidation and carbon deposits.
IMPORTANT: A calibrated pressure gauge and regulator must
always be used with nitrogen gas cylinders.
All external piping must be well supported. The unit will not
support external piping or valves.
If the condition arises where the suction line must be raised
to a point higher than the suction connection on the unit, a
suction line trap must be installed on the unit.
Horizontal suction lines should slope away from the evaporator
toward the compressor. Leak check and evacuate the system
using a two-stage deep vacuum pump. Pull and hold for 24
hours a 500 micron vacuum.
INSTALLATION

11
R
6.6 CONNECTING THE EXPANSION VALVE
All units are supplied with a sweat expansion valve connection.
Expansion valves are eld supplied or may have been installed
at the factory (optional).
All units require the use of an externally equalized expansion
valve and are provided with a 1/4" OD equalizer line.
Check the operation of the expansion valve after the system
has reached the desired cooler temperature. If the coil is not
receiving enough refrigerant, reduce the superheat setting
on the expansion valve.
To ensure unit performance, the expansion valve must be
set at the proper superheat and at the lowest temperature in
which the system is expected to operate.
6.7 BULB LOCATION AND INSTALLATION
The location and installation of the bulb is extremely
important to the proper system performance and care should
be taken with its nal location. Accepted principles of good
suction line piping should be followed to provide a bulb location
that will give the best possible valve control.
The bulb should be securely fastened to a clean straight and
horizontal section of the suction line at the evaporator outlet.
This will ensure good thermal contact between the bulb and
the suction line for satisfactory expansion valve control. If
the bulb cannot be located in that manner, it may be located
on a descending vertical line only. The bulb should never be
located in a trap or downstream of a trap in the suction line.
Liquid refrigerant or mixture of liquid refrigerant and oil boiling
out of the trap will falsely inuence the temperature of the
bulb and result in poor valve control.
On suction lines 7/8” OD and larger, the surface temperature
may vary slightly around the circumference of the line. On
these lines, it is generally recommended that the bulb be
installed at 4 or 8 o’clock on the side of the horizontal line, and
parallel with respect to the direction of ow. On smaller lines the
bulb may be mounted at any point around the circumference,
however locating the bulb on the bottom of the line is not
recommended as an oil-refrigerant mixture is generally present
at that point. Figure 5 shows both installation conguration.
Certain conditions, specic to a particular system, may require
a different bulb location than normally recommended. In these
cases, the proper bulb location may be determined by trial.
BULB ON SMALL SUCTION LINE
BULB ON LARGE SUCTION LINE
7/8” OD AND LARGER
8 o’clock 4 o’clock
Figure 5 Bulb installation
On multiple evaporator installations, the piping should be
arranged so that the ow from any valve cannot affect the bulb
of another, as shown in Figure 6. Approved piping practices
including the proper use of traps ensures individual control
for each valve without the inuence of refrigerant and oil ow
from other evaporators.
The vertical riser extending to the height of the evaporator
prevents refrigerant from draining by gravity into the
compressor during the off-cycle.
ABOVE AND BELOW MAIN SUCTION LINE
FLOW FROM UPPER VALVE
CANNOT AFFECT BULB
OF ANOTHER
INVERTED TRAP TO
AVOID OIL DRAINING
INTO IDLE
EVAPORATOR
FREE DRAINING
Figure 6 Bulb installation on multiple evaporator conguration
INSTALLATION

12
R
6.8 SUCTION LINE CONSTRUCTION
RECOMMENDED VELOCITY FOR GOOD OIL RETURN OF POE WITH HFC - FPM (M/S)
FPM Minimum
Horizontal
Minimum
Vertical Design Maximum
Condensate NA NA ≤ 100 (0.5) 150 (0.8)
Liquid NA NA ≤ 300 (1.5) 300 (1.5)
Suction 500 (2.5) 900 (4.6) 1000 (5.1) - 3000 (15.2) 4000 (20.3)
Discharge 500 (2.5) 900 (4.6) 2000 (10.2) - 3000 (15.2) 3500 (17.8)
HG Defrost 500 (2.5) 900 (4.6) 1000 (5.1) - 2000 (10.2) 3000 (15.2)
Table 2 Recommended velocity for good oil return of POE with HFC - FPM (m/s)
INSTALLATION
IMPORTANT: A calibrated pressure gauge and regulator
must always be used with nitrogen cylinders.
The suction line must be sized to maintain proper line velocities
with a practical line pressure drop. It is usually equal to 2°F
(1.1°C). To ensure proper oil return, all horizontal lines must
be sloped down toward the compressor with a minimum pitch
of 1/4” (6.4 mm) per 10 ft (3 m).
An access tting must be installed (when not part of the
evaporator) on the evaporator suction line to read an accurate
suction pressure for superheat adjustment.
In situations where it is necessary for the suction line to rise,
an oil trap must be installed at the bottom of the riser as
shown in Figure 7, page 12. To ensure oil return through a
riser in the suction line, a velocity of no less than 1000 FPM
(5.1 m/s) is required. When a system has capacity variation
or unloaders, a double riser when at less than 50% capacity
may be necessary to keep the velocity at a minimum of 900
FPM (4.6 m/s). You can drop one size for suction riser to lift
the oil. A trap should be provided for each additional 20 ft
(6 m) of riser. See Figure 9, page 13.
Avoid oil and refrigerant migration between active and inactive
evaporators in a common suction system. When multiple
evaporators are connected to a common suction line, it must
enter from the top. The rst evaporator suction connection
should have an inverted trap as shown in Figure 9.
Suction lines should not be exposed to heat or the sun. The
line must be properly insulated if it is necessary to run suction
line outside of the building or through heated areas. The
suction line must be insulated in any situation where the pipe
may sweat or freeze.
If isolation valves are installed on the suction lines, full port
ball valves should be used.
OIL
OIL
SLOPE 1/4”
PER 10 FT.
TOWARD
COMPRESSOR
IMPROPER PROPER PROPER
INSTALL REDUCERS
IN VERTICAL PIPE
INSTALL EXPANDER
IN HORIZONTAL PIPE
Figure 7 Suction oil trap construction

13
R
A B A B
SUCTION LINE
TO COMPRESSOR
SUCTION LINE
TO COMPRESSOR
EVAP.
RED TEE RED TEE
U-BEND OR
2 ELLS
45OSTR.
ELLS
90OSTR.
ELLS
EVAP.
Figure 8 Double suction riser
MULTIPLE EVAPORATORS
ON DIFFERENT LEVELS:
COMPRESSOR ABOVE
MULTIPLE EVAPORATORS
STACKED ON SAME LEVEL:
COMPRESSOR ABOVE
(ARRANGEMENT APREFERRED)
MULTIPLE EVAPORATORS ON
SAME LEVEL: COMPRESSOR
BELOW
DOUBLE RISER
WHEN
NECESSARY DOUBLE RISER
WHEN
NECESSARY
MULTIPLE EVAPORATORS ON
SAME LEVEL: COMPRESSOR
ABOVE
A B C D
Figure 9 Multiple evaporator suction line construction
INSTALLATION

14
R
6.9 EXTERNAL EQUALIZER LOCATION
The purpose of the external equalizer is to sense the pressure
in the suction line at the bulb location and transmit it to the
TEV diaphragm. This usually means installing the external
equalizer immediately downstream from the bulb. This ensures
the correct pressure is signalled to the TEV.
In some situations this “ideal” location may not be possible.
In these cases, an alternate location, such as at B or C (see
Figure 10), could be used. However, the pressure at these
locations must be nearly identical to the pressure in the line
where the bulb is located.
In other words, locations B and C are acceptable as long
as these pressures are essentially the same as A when the
system is operating at full load. In the past, there has been
concern about installing the external equalizer “up-stream”
from the bulb. This was due to the possibility of refrigerant
leaking past the TEV push rods, passing through the equalizer
line and into the suction line, thus falsely inuencing the TEV
bulb temperature.
6.10 FIELD WIRING
WARNING: All system wiring must be done in
accordance with applicable codes and local
ordinances.
All internal wiring of fan motors, tubular heaters and combination
defrost termination fan delay control have been factory
connected. Before operating the unit, always double-check
all wiring connections, including the factory wired terminals.
Factory connections may vibrate loose during transport.
Wiring diagrams are shown at the end of this manual for
reference only. Always refer to the wiring diagram supplied
with your specic unit.
When eld wiring the unit, consider the following:
• All wiring connections terminate on terminal block(s) in
the wiring compartment and are clearly labeled.
• The serial tag on the unit is identied with the electrical
characteristics for wiring the unit.
• Consult the wiring diagram in the unit for proper
connections.
• Wires should be copper conductor only and of the
proper size in order to handle the connected electrical
load.
• The unit must be grounded.
• For systems with multiple evaporator, the defrost
termination controls should be wired in series. Follow
the wiring diagrams for multiple evaporators carefully.
• Multiple evaporator systems should operate off of one
thermostat.
• If a remote defrost timer is used, the timer should be
located outside the refrigerated space.
INSTALLATION
B
A
C
EVAPORATOR
TEV
COMPRESSOR
Figure 10 Location of TEV external equalizer

15
R
START-UP
7. START-UP
CCAUTION: Before starting unit, be sure wire
fan guards are secured in place over each fan.
7.1 LEAK TESTING AND EVACUATION
Leak testing and evacuation must be done in
accordance with local and national codes.
Once all refrigerant connections are made, leak test all joints
before charging the system with refrigerant. After leak testing,
all moisture and non-condensable gas must be evacuated from
the system. Attach high vacuum line pump and gauge on both
high and low pressure sides of the system. A minimum vacuum
level of 500 micron is required to effectively remove moisture.
Be sure all valves such as compressor, hot gas, receiver,
and liquid solenoid valves are open. Break the vacuum in
the system with the refrigerant to be used. Always charge the
refrigerant into the system through a new 16 cu. in drier (eld
supplied) in the charging manifold line.
7.2 FAN MOTORS
Fan motors may cycle off on automatic thermal protection if
the coils are frozen or blocked. Check the supply voltage at
the motor leads if motor is inoperable. Also check direction
of rotation of the motors.
7.3 FAN DELAY / DEFROST TERMINATION
CONTROL
This control is located on the coil plate and senses the coil
temperature. To provide fan delay, the defrost thermostat
must be turned off.
To set the defrost termination / fan delay thermostat:
1. Set the cut-in temperature to approximately 50-60oF. This
will be your high event or the limit defrost temperature.
2. Set the differential temperature to approximately 20-30
o
F.
This will be your low event or fan cut-in temperature. The
idea is to have your evaporator coil temperature below
32oF in order to avoid water carry over.
Example:
Cut-in defrost temperature=55oF (End defrost)
Cut-in fan temperature=30oF (Start fans)
Differential= 25oF (55-30=25)
7.4 FAN DELAY DRAIN PAN CONTROL
The fan delay drain pan control senses the general coil
temperature.
• With temperature rise, the fan delay thermostat de-
energizes the fan and energizes the electric pan heaters.
• After defrost cycle, the coil temperature drops below the
freezing point and the fan delay thermostat energizes
the fan motor and de-energizes the heaters.
• Defrost timer must be set long enough to completely melt
the ice in the unit. Set the thermostat at 20 to 25ºF and
the differential at minimum.
IMPORTANT: After correcting a faulty defrost cycle, it is
essential that the coil, drain pan and unit be free and clear of
ice before placing the unit back on automatic operation.
7.5 ADJUSTING EVAPORATOR PRESSURE AND
SUPERHEAT
What is Glide:
Understanding Glide is the key to maintaining the desired
temperature and protecting the compressor.
To reach EPA and Environment Canada's mandated lower global
warming potential (GWP) levels, the commercial refrigeration
industry has increasingly turned to refrigerant blends. These
blends are non-toxic, non-ammable and operate within the
typical commercial refrigeration operating pressures.
Many technicians are accustomed to using refrigerants that act
as a single component with a boiling temperature that doesn’t
change within the evaporator. But with zeotropic refrigerant
blends, the temperature in the evaporator will be colder at the
start of the coil than at the end. Simply put, the differences in
these temperatures is the Glide.
Refrigerant Blends and Glide:
Refrigerant blends such as R-404A, R-407A, R-407C, R-407F,
R-448A and R-449A are a mixture of components that retain
their individual evaporating and condensing points.
With R-404A, the refrigerant glide is approximately 1oF and
can generally be ignored.
With R-407A, R-407C, R-407F, R-448A and R-449A, refrigerant
glide is much higher (6-10˚F) and yields higher dew point
condensing temperatures in comparison to R-404A for
equivalent performance
Why Glide Matters:
Because different components in a blend boil at different
temperatures, the temperature in the coil will vary as the mixture
boils. If the expansion valve adjustment isn’t made using the
Dew Point, two things can happen. FIRST, the liquid may not
vapourize before reaching the compressor, which can cause
inefciency and lead to compressor damage. SECOND, the
blend may completely boil part way through the evaporator,
leading to a loss of efciency and required xture temperature.

16
R
Setting Evaporator Pressure:
As an example, let say we want to achieve an average coil
temperature of 20
o
F ( in Table 3). Using a temperature-
pressure chart as reference such as the example in Table
3, now that we can begin by setting the Pressure to 51 psig
(item ).
Setting Evaporator Superheat:
In order to set the superheat, nd the Dew Point temperature
corresponding to the coil pressure. The evaporator coil
pressure and dew temperature are shown by and in the
chart below. To get superheat, compare the dew temperature
from the chart to the actual temperature of the evaporator
outlet piping. The difference in these two temperatures is
the superheat. In this example, when the pressure is 51
psig and the pipe temperature is 30 degrees, the superheat
will be 30 minus 25, or 5 degrees. As you continue to take
temperature readings, you can adjust the superheat and
pressure as needed until you’ve achieved the desired coil
temperature.
Note: In the absence of specific manufacturer
recommendations, a 4 to 6° F superheat for low temperature
and 6 to 8° F for medium temperature is recommended.
Note: When setting superheat in a system using a refrigerant
with glide, remember that pressure is constant throughout the
evaporator while the temperature will change during boiling
in the evaporator.
Adjusting for Glide:
When adjusting pressure and superheat, your goals are to
achieve the desired temperature, maximize coil efciency,
and protect the compressor for long service life. It all starts
by looking at the Pressure-Temperature (PT) chart included
with your refrigerant or any up-to-date refrigerants PT Chart.
PRESSURE
TEMPERATURE
AVERAGE BUBBLE DEW
(PSIG) OF
45 15 10 20
46 16 11 21
47 17 12 22
48 18 12 23
49 18 13 24
50 19 14 24
151 420 315 225
52 21 16 26
53 22 16 27
54 22 17 28
55 23 18 28
Table 3 Example of pressure-temperature chart
8. DEFROST SYSTEM
8.1 AIR DEFROST UNITS
Fan motors run continuously and a defrost time clock, or
low-pressure setting, stops the compressor when defrost is
required.
NOTE: The unit must not be in operation more than 16 hours
per day.
8.2 ELECTRIC DEFROST UNITS
A time clock starts the defrost process by stopping the fan and
energizing the heaters. When the defrost thermostat resets
the time clock, it de-energizes the heaters and re-starts the
fan motors.
8.3 REVERSE-CYCLE HOT-GAS DEFROST UNITS
Reverse-cycle defrost systems introduce compressor
discharge gas through the suction line during defrost. The
amount of gas introduced is controlled by a solenoid bypass
valve and a gas defrost time clock.
Condensed refrigerant is relieved through a check valve.
The check valve bypasses the expansion valve leading to
the liquid line which has reduced pressure. The drain pan is
warmed by the entering hot gas to avoid freezing. Defrost is
initiated and terminated by the time clock.
NOTE: A minimum of 4 evaporators is required for an
efcient operation.
NOTE: The use of a suction to liquid heat exchanger is
recommended.
8.4 THREE-PIPE HOT-GAS DEFROST UNITS
During defrost, compressor discharge gas is introduced in
a separate hot gas line. The amount of gas introduced is
controlled by a solenoid bypass valve and a gas defrost time
clock.
To avoid excessive accumulation of liquid in the suction
accumulator, a heat exchanger is recommended. The drain
pan is warmed by the entering hot gas to avoid freezing. The
time clock cycles fan motors, liquid and hot gas solenoids.
NOTE: A minimum of 3 evaporators is required for an
efcient operation. Special engineering is required
for a 1 or 2 evaporator conguration. Please
contact RefPlus' Sales-Engineering department for
proper selection.
NOTE: A eld-installed pressure regulating valve may
be required on low temperature systems to control
compressor crankcase pressure.
4
1
12
DEFROST SYSTEM

17
R
9. SERVICE
9.1 INITIAL INSPECTION
After the system has been charged and has operated for at
least two hours at normal operating conditions without any
indication of malfunction, it should be allowed to operate
overnight on automatic controls. Then a thorough inspection
of the unit operation should be made as follows:
1. Check for any vibration in the unit.
2. Check liquid line sight glass and proper operation of
expansion valve. If additional refrigerant seems to be
required, leak test all connections. Repair any leaks before
adding refrigerant.
3. Thermostatic expansion valves must be checked for proper
superheat settings. Sensing bulbs must be in positive
contact with the suction line and should be insulated.
Valves set at high superheat will lower refrigeration
capacity. Low superheat may cause liquid slugging and
compressor bearing washout.
4. Check defrost controls for initiation and termination
settings and length of defrost period. Set fail safe at length
of defrost + 25%. Example: 20 minute defrost + 5 minutes
= 25 minute fail safe
5. Check drain pan for proper drainage.
9.2 PERIODIC INSPECTIONS
All units should be checked at least once a month for proper
defrosting. It may be necessary to periodically change the
number of defrost cycles or adjust the duration of defrost.
Under normal usage conditions, proper unit maintenance
should be done every six months to include the following:
1. Check all wiring and insulators.
2. Check and tighten all electrical connections.
3. Inspect contactors for proper operation and for worn
contact points.
4. Check all fan motors. Tighten motor mount bolts/nuts and
tighten fan set screws.
5. Clean condenser coil surface.
6. Check refrigerant and oil level in the system.
7. Check operation of the control system ensuring all safety
controls are operating properly.
8. Check all defrost controls are functioning properly.
9. Clean the unit coil surface.
10. Clean the drain pan and check the drain pan drain line
for proper drainage.
11. Check drain line heater for proper operation, cuts and
abrasions.
12. Check and tighten all are connections.
See troubleshooting chart for troubleshooting information.
CAUTION: Before starting unit, be sure wire fan
guards are securely fastened over each fan.
9.3 CLEANING
WARNING! Before carrying out any cleaning or
maintenance of the unit, always check to make
sure main power to systems is OFF.
Electrical shock can cause personal injury or
death.
The unit should be checked periodically for dirt accumulation.
Grease and dust should be removed from the fan, fan guards,
and drain pan.
Occasional cleaning of nned surfaces can be done by dusting
the ns and then cleaning with a mild detergent and warm
water spray.
Always pressure clean in reverse of the air ow.
IMPORTANT: Do not use alkaline or acidic solutions; they
will damage the coils. Remove the fan guards to clean the
inner face of the coil.
SERVICE

18
R
10. TROUBLESHOOTING CHART
PROBLEM POSSIBLE CAUSES POSSIBLE CORRECTIVE STEPS
Fan(s) will not
operate
1. Main switch open.
2. Blown fuses.
3. Defective motor.
4. Defective timer or defrost thermostat.
5. Unit in defrost cycle.
6. Coil does not get cold enough to reset
thermostat.
1. Close switch.
2. Replace fuses. Check for short circuits or
overload conditions.
3. Replace motor.
4. Replace defective component.
5. Wait for completion of cycle.
6. Adjust fan delay setting of thermostat.
Room temperature
too high
1. Room thermostat set too high.
2. Superheat too high.
3. System low on refrigerant.
4. Coil iced-up.
1. Adjust thermostat.
2. Adjust thermal expansion valve.
3. Add refrigerant.
4. Manually defrost coil and check defrost
controls for malfunctions.
Ice accumulating
on ceiling around
evaporator and/or
on fan guards,
venturi, or blades
1. Defrost duration is too long.
2. Fan delay not delaying fans after defrost
period.
3. Defective defrost thermostat or timer.
4. Too many defrosts.
1. Adjust defrost termination thermostat.
2. Defective defrost thermostat or not
adjusted properly.
3. Replace defective component(s).
4. Reduce number of defrost.
Coil not clearing of
frost during defrost
cycle
1. Coil temperature not getting above freezing
point during defrost.
2. Not enough defrost cycles per day.
3. Defrost cycle too short.
4. Defective timer or defrost thermostat.
1. Check heater operation.
2. Adjust timer for more defrost cycles.
3. Adjust defrost thermostat or timer for
longer cycle.
4. Replace defective component.
Ice accumulating in
drain pan
1. Defective heater.
2. Unit not pitched properly.
3. Drain line plugged.
4. Defective drain line heater.
5. Defective timer or thermostat.
1. Replace heater.
2. Check pitch and adjust, if necessary.
3. Clean drain line.
4. Replace heater.
5. Replace defective component.
Uneven coil
frosting
1. Defective heater.
2. Unit located too close to door or opening.
3. Defrost termination set too low.
4. Incorrect or missing distributor nozzle.
1. Replace heater.
2. Relocate unit.
3. Adjust defrost termination setting higher.
4. Add or replace nozzle with appropriate
sized orice for conditions.
11. REPLACEMENT PARTS
Download the parts manual at refplus.com
TROUBLESHOOTING CHART - REPLACEMENT PARTS

19
R
EVAPORATOR START-UP REPORT FORM
12. EVAPORATOR START-UP REPORT FORM
IMPORTANT: This startup report form must be lled out, signed and sent to RefPlus for the warranty to be honoured.
1. GENERAL INFORMATION
JOB LOCATION: __________________________________________________________________________________________________________________________
REFPLUS RJ No: CONTRACTOR NAME:
UNIT COOLER MODEL No.: SERIAL No.:
2. PRE-START-UP (Check each item when completed)
 CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS  CHECK ALL FAN MOTORS AND MOTOR MOUNTS FOR TIGHTNESS
 CHECK DRAIN LINES AND DRAIN PAN FOR PROPER DRAINAGE  CHECK DRAIN LINE HEATER FOR PROPER OPERATION
 VERIFY THAT ALL DEFROST CONTROLS ARE FUNCTIONING PROPERLY CHECK ALL FLARE CONNECTIONS FOR TIGHTNESS
 CHECK ALL MECHANICAL SEALS AND REFRIGERANT PIPING CONNECTIONS FOR TIGHTNESS
 CARRY OUT PRESSURE TEST (PRESSURE/DURATION) PRESSURE : PSI DURATION: ____
EVACUATION (DURATION): ________ FINAL MICRON: _
UNIT COOLER DRAIN LINE TRAPPED OUTSIDE OF BOX: YES NO
3. START-UP
REFRIGERANT
REFRIGERANT TYPE (I.E. R448A)
ELECTRICAL
 CHECK FAN MOTORS FOR PROPER ROTATION
MAIN POWER (DESIGN): __________V / ________ PH / _______Hz
MAIN POWER (MEASURED): L1-L2 __________V L1-L3 __________V L2-L3 __________V
CONTROL VOLTAGE (MEASURED): __________V
TOTAL UNIT AMPERAGE (MEASURED) __________ AMPS
FAN 1 __________ AMPS (L1) __________ AMPS (L2) _________ AMPS (L3) _________ AMPS (RATED)
FAN 2 __________ AMPS (L1) __________ AMPS (L2) _________ AMPS (L3) _________ AMPS (RATED)
FAN 3 __________ AMPS (L1) __________ AMPS (L2) _________ AMPS (L3) _________ AMPS (RATED)
FAN 4 __________ AMPS (L1) __________ AMPS (L2) _________ AMPS (L3) _________ AMPS (RATED)
FAN 5 __________ AMPS (L1) __________ AMPS (L2) _________ AMPS (L3) _________ AMPS (RATED)
TEMPERATURE START-UP AFTER 24 HOURS OF OPERATION
AMBIENT TEMPERATURE 0F 0F
DESIGN BOX TEMPERATURE 0F 0F
OPERATING BOX TEMPERATURE 0F 0F
SUPERHEAT AT COMPRESSOR 0F 0F
SUCTION LINE TEMP. AT EVAPORATOR 0F 0F
SUPERHEAT AT EVAPORATOR 0F 0F
SUB-COOLING 0F 0F
LIQUID TEMPERATURE 0F 0F
PRESSURES (in cooling mode)
REFRIGERANT SUCTION PSIG TEMP AT COMPRESSOR 0F
REFRIGERANT DISCHARGE PSIG TEMP AT COMPRESSOR 0F

20
R
4. CONTROLS
THERMOSTAT SETTING 0F ADJUSTABLE LIMIT DEFROST SETTING 0F
DEFROST SETTING /DAY MINUTES FAIL-SAFE ADJUSTABLE FAN DELAY SETTING 0F
5. FIELD INSTALLED EXPANSION VALVE
MANUFACTURER
MODEL
DATE: (YY/MM/DD) TECHNICIAN:
SIGNATURE:
FILL OUT FORM MANUALLY, TAKE A PHOTO
AND SEND TO:
[email protected]
SCAN THE QR CODE LOCATED IN THE
CONTROL PANEL OF YOUR UNIT TO ACCESS
THE ONLINE FORM
OR
S EVAPORATOR START-UP REPORT FORM