Vinotemp Wine-Mate WM-2520SSV-LA Installation guide

Split Rack-Recessed Cooling System
Operation Care Installation Manual
WM-2520SSV WM-2520SSV-LA
WM-4520SSV WM-4520SSV-LA
WM-6520SSV WM-6520SSV-LA
www.vinotemp.com
Read and save these instructions
Vinotemp International Corp
732 South Racetrack Road, Henderson, NV 89015
Tel: (800) 777-VINO Fax: [phone] Email: [email protected]

-1-
Important Safety Information
WARNING
To avoid the risk of electrical shock, property damage, personal injury, or death:
•The power cord must be plugged into a 3-prong grounding type wall
receptacle, grounded in accordance with the National Electrical Code,
ANSI/NFPA 70 –latest edition and local codes and ordinances.
•It is the personal responsibility of the consumer to have a proper 3-prong wall
receptacle installed by a qualified electrician.
•DO NOT, UNDER ANY CIRCUMSTANCES, REMOVE THE POWER CORD
GROUNDING PRONG.
•A separate adequately fused and grounded circuit should be available for this
appliance.
•Do not remove any grounding wires from individual components while servicing
unless the component is to be removed and replaced. It is extremely important
to replace all grounding wires when components are replaced.
WARNING
ELECTRICAL SHOCK HAZARD
•Disconnect electrical supply from appliance before servicing.
•Replace all panels before operating.
•Failure to do so could result in death or electrical shock.

-2-
Table of Contents
Cellar Construction Guide-----------------------------------------3
Features & Specifications -- -4
Temperature & Humidity -- - 6
Care Guide- - -- - 10
User’ Troubleshooting - -11
Installer’s Instructions- - -14
Electrical Wirings -- -- 26
Warranty --- --- -- - -- --- -- --- -- -- --- -29

-3-
Cellar Construction Guide
This is only a guide and shall be considered as the minimum requirements.
All interior walls, ceilings and floors shall have a vapor barrier and a minimum of
R13 insulation. All exterior walls and ceiling shall have a vapor barrier and a
minimum of R19 insulation. The vapor barrier shall be installed on the warm side
of insulation. All joints, door frames, electrical outlets or switches and any pipes
or vents that go through the cellar shall be sealed to prevent air and moisture leaking
into the cellar. Concrete, rock, and brick are not insulations or vapor barriers. Doors
shall be of a minimum size, insulated to at least R13 and tightly sealed with high
quality weather stripping. Be sure to seal the bottom of the door and fill gap between
the door’s frame and wall before installing the cap molding.
In order to maintain 55 °F in the wine cellar, the ambient temperature surrounding
the cellar shall not exceed the temperature of the cellar by more than 25 °F. No
cellar walls shall receive direct sun or strong wind.
Lighting shall be of low wattage, with a timer to insure lights are not left on when the
cellar is not occupied.
The cooling system will not be able to maintain the proper temperature if fresh
moisture-laden air is constantly being introduced to the cellar. Symptoms of this
condition are; cooling unit runs all the time with only a slight reduction in temperature
and/or water overflows from the cooling unit. Because of the temperature difference
between the inside and outside, very small cracks can allow large amounts of
outside air to enter into the cellar. Please be aware that moisture can pass through
solid concrete, paint and wood. Often a newly constructed cellar contains fresh
wood, paint, concrete and other building materials. These materials contain large
amounts of moisture. When placed into operation in this type of environment, the
system will work harder to remove this extra moisture resulting in increased “run”
time.

-4-
Features and Specifications
• WINE~MATE split rack-recessed cooling systems WM-2520~6520SSV and
WM-2520~6520SSV-LA are designed to provide a cold environment between
50~65 °F with a humidity range within 50~70% RH for a properly insulated wine
cellar.
• These temperature and humidity ranges are optimized for long term storage of
wine like that in natural caves.
• SSV evaporator units are designed for vertical installation inside a rack or in a
wine room corner, making them an ideal choice for small and medium wine
cellars. There are also multiple air inlet and outlet doors for different installations.
• SSV cooling systems consist of a remote condensing unit and an evaporator unit
and they are connected by a liquid line and an insulated suction line.
• SSV condensing units can be located away from the wine cellars up to 75 ft so
that noise and compressor vibration are isolated.
Fig. 1 SSV Split Rack-Recessed Cooling System

-5-
CAUTION
If the condensing unit will operate below 50°F, install a low
ambient condition kit.
NOTE
The cooling capacity is determined under 55°F cellar temperature,
75°F cellar ambient temperature and 90°F condensing unit ambient
temperature, with R13 interior and R19 exterior insulations. Higher
ambient temperatures or lower insulations will cause reducing
capacity and the cellar temperature may not be maintained at 55°F.
The specifications are listed as follows:
Model No.
Capacity (Btu/h) / Airflow (CFM)
Max Cellar Size (cu ft)
WM-2520SSV WM-
2520SSV-LA
2100 / 180
230
WM-4520SSV WM-
4520SSV-LA
3700 / 280
900
WM-6520SSV WM-
6520SSV-LA
5400 / 350
1400
NOTE
“LA” refers the unit equipped with a low ambient kit.
For further info, see Fig. 3~7.

-6-
Temperature and Humidity
1. The controller
Fig. 2 TEMPERATURE CONTROLLER
1) Keys
SET: To display set-point; in programming mode it selects a parameter or
confirms an operation.
: To start a manual defrost.
: To see the maximum stored temperature; in programming mode it browses
the parameter codes or increases the displayed value.
: To see the minimum stored temperature; in programming mode it browses
the parameter codes or decreases the displayed value.
: To turn on/off the power to the unit.
+ : To lock/unlock the keypad.
SET+ : To enter in the programming mode.
SET+ : To return to the temperature display.
2) Lock and unlock the keys
To lock the keys, press up + down keys + until POF is displayed; to unlock
the keys, press up + down keys + until PON is displayed.
3) Display
During normal operating conditions, the display shows the value measured by the
air temperature probe. In case of active alarm, the temperature flashes alternately
to the code alarm. The LED functions are listed as follows.
LED
MODE
FUNCTION
ON
Compressor enabled
Flashing
Anti-short cycle enabled
ON
Defrost enabled
ON
Fan enabled
Flashing
Fan delay after defrost enabled
ON
Alarm occurring
ON
Temperature measuring unit
Flashing
Programming mode

-7-
4) Alarm Signals
The alarm codes are described as follows.
MESSAGE
CAUSE
FUNCTION
P1
Temperature probe
faulty
Compressor switching to Con and
CoF
HA
High temperature
alarm
Probe temperature ALU higher than
the
setting temperature; Outputs
unchanged
LA
Low temperature
alarm
Probe temperature ALL lower than
the
setting temperature; Outputs
unchanged
CA
External alarm
All outputs off
Probe alarms P1”, start a few seconds after the fault in the related probe; they
automatically stop a few seconds after the probe restarts normal operation. Check
connections before replacing the probe. Temperature alarms “HA”, “LA”
automatically stops as soon as the temperature returns to normal value. Alarm “CA”
(with i1F=PAL) recovers only by switching off and on the instrument.
2. Temperature Setting
• Set the temperature at 55 °F for the optimum aging of wine
• On initial start-up, the time required to reach the desired temperature will vary,
depending on the quantity of bottles, temperature setting and surrounding
temperature.
• Allow 24 hours to stabilize the temperature for each new temperature setting
operation
3. How to see temperature set-point
1) Press and immediately release the SET key, the display will show the set-point
value.
2) Press again and immediately release the SET key to display the probe value.
4. How to change the set-point
1) Press and hold the SET key until the “°C” or “°F” LED starts flashing and the
set-point is displayed.
2) Press the up/down keys / to change the set-point value within 10 sec.
3) Press the SET key again to store the new set-point value.
NOTE
The unit turns on at set-point Set plus regulation differential Hy after
anti-short cycle AC has elapsed; the unit turns off at set-point Set.

-8-
5. Manual Defrost
Press and hold the defrost key until defrost starts. The defrost indicator will be
on.
6. Parameter Programming
1) Press and hold the SET + keys until the “°C” or “°F” LED starts flashing,
then release the keys.
2) Press and hold again the SET + keys until the Pr2 label is displayed, then
release the keys. The first parameter Hy will be displayed.
3) Press up/down keys / to scroll to the required parameter within 10 sec.
4) Press the “SET”key to display its value.
5) Use up/down keys to change its value within 10 sec.
6) Press “SET”to store the new value and the display will flash 3 times.
7) To exit: Press SET + or wait 15sec without pressing a key.
PARAMETER
DESCRIPTION
DEFAULT VALUE
Set
set-point
(°)
55
Hy
temperature regulation differential (°)
4
AC
anti-short cycle delay (min)
10 (hidden)
Con
compress on with probe faulty (min)
15
CoF
compress off with probe faulty (min)
30
CF
temperature unit (°F/ °C)
F: Fahrenheit
rES
display resolution
in: integer
dLy
temperature display delay (min)
1
ot
probe calibration (°)
0
LS
minimum set-point (°)
50
US
maximum set-point (°)
65
idF
defrost interval time (hour)
12
MdF
defrost endurance time (min)
30
ALC
temperature alarm type
rE: relative to set-point
ALU
high temperature alarm (°)
10
ALL
low temperature alarm (°)
10
AFH
alarm recovery differential (°)
5
ALd
temperature alarm delay (min)
60
dAO
temperature alarm delay on startup
(hr)
23
SAA
heater set-point (°)
40
SHy
heater regulation differential (°)
4
FSU
fan
action
Std
FnC
fan operating mode
C-n: on with compressor & off during defrost
Fon
fan on with compressor off (min)
0
FoF
fan off with compressor off (min)
15
NOTE
Depending on the controller, not all parameters are available.

-9-
7. How to calibrate the air probe
If the actual cellar temperature differs from the setting temperature, set
parameter ot = actual cellar temperature minus set-point.
8. How to adjust defrost settings
In case there is excessive frost, the parameters FnC = C-y, idF = 4 and MdF =
20 can be used to avoid frost.
9. How to adjust the humidity
The parameter Fon is used to adjust the humidity in the wine cellar. Higher Fon
results in higher relative humidity. Use a separate hygrometer to monitor the
humidity.
10. How to set alarm call
1) Speech notice will be sent to your phones when the cellar temperature is ALU
higher or ALL lower than the set-point Set.
2) In order to test the call function, set parameters Ald = 0 and dAO = 0. After
testing, set Ald = 60 and dAO = 23.
11. How to set cellar heater
The heater turns on at SAA minus Shy; the heater turns off at SAA.
NOTE
Use a forced air heater to warm up the wine cellar.
If there is a thermostat on the heater, bypass it or set thethermostat
at the highest level.
If the heater runs more than 10 A current, use a 120VAC coil
contactor.

-10-
Care Guide
In general, always unplug system or disconnect power while doing care.
1. Condenser Coil Cleaning
• Clean the condenser coil regularly. Coil may need to be cleaned at least
every 6 months.
• Use a vacuum cleaner with an extended attachment to clean the coil when it
is dusty or dirty.
2. Condensate Removing
• Remove the excessive condensate if it is accumulated in the wine cellarunder
high humidity conditions.

-11-
User’s Troubleshooting
This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive.
Complaint
Possible Causes
Response
1. Unit not running
a. Power cord not plugged
b. No power from supply
c. Incorrect or loose wirings
d. Low voltage
e. Setting higher than
ambienttemperature
f. Waiting for cut-in
g. Defrost light blinking
h. Compressor light blinking
i. Defective controller
a. Check power cord
b. Check receptacle and fuses
c. Check all wirings and connections
d. Contact an authorized electrician
e. Lower temperature setting
f. Wait
g. Unit is under defrost mode
h. Unit is under anti-short cycle delay
i. Call service for diagnosis
2. Unit not starting
, but
temperature
rising high
a. Anti-short cycle
a. Reset AC
3. Temperature
fluctuating
a. Air probe
a. When using an air probe, the wine
bottle temperature is mainly controlled
by the average air temperature. If the
set-point is 55°F with the differential
4F, the coolingunit turns on at 59°F of
airtemperature (It may be higher than
59°F if it is in anti-short cycle or
defrost) and turns off at 55°F of air
temperature. The average air
temperature is 57°F, andthen the wine
temperature is around 57+/- 0.5°F.
The air is light enough to change so
quickly that it maintains relatively
constant average temperature that
would prevent wine
bottle temperature from fluctuating.
4. Temperature
high, unit
stopping and
starting
normally
a. Temperature setting high
a. Lower the setting
5. Temperature
high, unit
stopping and
starting with
short running
time
a. Air probe touching the
evaporator coil, displaying
temperature ok
b. Air probe in cold-air supply,
displaying temperature ok
c. Failed controller and probe
a. Move the air probe away from the
evaporator
b. Move the air probe away from the
cold-air supply
c. Call service for diagnosis
6. Temperature
high or not
cooling and
running
continually
a. Improper cellar insulation &
seal
b. Cellar too large
c. Ambient temperature too high
d. Exhaust restricted
a. Check insulation, gasket and door
opening
b. Check for excessive size
c. Check installation location
d. Leave minimum 3 feet clearance for
the hot air exhaust side and leave

-12-
e. Malfunctioning fans
f. Evaporator or condenser
airflow
g. Dirty Condenser
h. Iced evaporator
i. Refrigeration system restriction
j. Refrigerant leak
k. Undercharge or overcharge
l. Failed components
minimum 1 foot clearance for the
ambient air intake side
e. Check for both evaporator and
condenser fans
f. Check for air restrictions, air
short-circulation, grille directions
g. Clean condenser
h. Defrost and reset temperature
i. Call service
j. Call service
k. Call service
l. Check compressor windings, start
relay and overload protector
7. Unit running too
long
a. Improper cellar insulation & seal
b. Exhaust restricted
c. Cellar too large
d. Ambient temperature > 90°F
e. Dirty Condenser
f. Improper condenser air flow
a. Check insulation, gasket and door
opening
b. Leave minimum 3 feet clearance for
the hot air exhaust side and leave
minimum 1 foot clearance for the
ambient air intake side
c. Check for excessive size
d. Check for installation location
e. Clean condenser
f. Check for fan and air short
circulation
8. Condenser fan
running but
compressor not
running
a. Incorrect or loose wirings
b. Failed components
c. Liquid refrigerant in
thecompressor
a. Check all wirings and connections
b. Check start relay, start capacitor,
overload protector, compressor.
c. Call service.
9. Compressor
running but
condenser fan
not running
a. Fan blade stuck
b. Incorrect or loose wirings
c. Failed motors
d. Fan cycle control
a. Check for proper clearance
b. Check all wirings
c. Call service
d. Check for setting
10.Temperature
high, compressor
stopping and
starting but very
short
running time
a. Failed components
b. Improper condenser airflow
c. Dirty condenser
d. Overcharge of refrigerant
e. Discharge or suction pressure
too high
a. Check compressor windings, start
relay and overload protector.
b. Check for condenser fan
c. Clean condenser
d. Call service for removing refrigerant
e. Call service for information
11.Evaporator fan
running toolong
a. Post-compressor fan
running
mode for humidity modulation
a. Reset FON
12. Evaporator fan
running but
condensing
unit not
running
a. Incorrect or loose wirings
b. Failed components
c. Low refrigerant
a. Check all wirings and connections
b. Check start relay, start capacitor,
overload protector, compressor.
c. Call service
13.Temperaturelow
a. Low temperature setting
b. Low ambient temperature
c. Air probe fault
d. Temperature controller fault
a. Raise the setting
b. Move to another location
c. Check probe connections or
changea new one
d. Change a new one
14.Evaporator
freezing up
a. Evaporator air flow restriction
b. Condenser air flow restriction
a. Check for fans and CFM
b. Check for fans and CFM

-13-
c. Not stopping due to air leak, high
ambient temperature or low
temperature setting
d. Defective controller or probe
e. Low ambient temperature
f. Initially working then stopping,
moisture in the system
g. Refrigerant low or leaking
h. Expansion valve blockage
c. Check for seal, door opening, ambient
temperature andtemperature setting
d. Check for controller and probe
e. Change defrost settings
f. Call service
g. Call service
h. Call service
15.Water leak
a. Air leak in the wine cellar
causingexcessive condensate
b. High humidity causing
excessivecondensate
c. Evaporator air flow restriction
d. Drain restricted or unit not
level,and water overflowing
e. Drip tray leak (No overflow but
leak)
a. Check for air leak
b. Use drain line
c. Check supply air flow or air TD
d. Clean the drip tray and drain line
e. Seal the leak using silicone sealant
16.Excessive
condensate in
wine cellar
a. Air leak in the wine cellar
causingexcessive condensate
b. High humidity causing
excessivecondensate
c. Drain restricted
a. Check for any air leak
b. Use drain line
c. Clean the drip tray and drain line
17.Condensateinside
ducts
a. Drain line restricted
b. Continually running not
stopping
c. Too cold supply air
a. Check for drain
b. raise temperature setting or
increase defrost
c. Increase air flow or raise
temperature setting
18.Condensate
outside ducts
a. Duct not insulated
b. High humidity
c. Too cold supply air
a. Check for insulation
b. Use dehumidifier
c. Increase air flow or raise
temperature setting
19.Circuit tripping
a. Incorrect fuse or breaker
b. Incorrect wirings
c. Failed components
a. Check for proper fuse or breaker
b. Check for wirings and connections
c. Call service
20.Noisy
operation
a. Mounting area not firm
b. Loose parts
c. Compressor overloaded due to
high ambient temperatures or
airflow restriction
d. Defective components
a. Add support to improve installation
b. Check fan blades, bearings, washers,
tubing contact and loosescrews.
c. Check for airflow
d. Call service for checking internal
loose, inadequate lubrication and
incorrect wirings

-14-
Installer’s Instructions
WARNING
Do not use a ground fault interrupter (GFI).A
dedicated circuit is required.
WARNING
•Always check wiring harness connections before initiating any test procedures.
•Disconnect electric power from the appliance before performing any
maintenance or repairs.
•Voltage checks should be made by inserting meter proves beside the wires in
the connector blocks with the electric power source on and the connector block
plugged in.
•Resistance checks should be made on components with the electric power off
and the connector block disconnected.
Federal law requires that WINE~MATE split cooling systems be
installed by an EPA certified refrigeration technician.
1. General Instructions
WINE~MATE split system is shipped as components and is ready for use only after
a certified refrigeration technician has properly installed the system. Proper
installation is critical. Vinotemp can only warrant the quality of the components.The
installation and proper operation of the system must be warranted by the installer.
Installation of the system must be done in accordance with all state and local
building and electrical codes.
The condensing unit and evaporator unit are connected by a liquid line and an
insulated suction line that are supplied by the installer. These lines must beproperly
sized for the distance between the two units. After the units and linesare
connected, the system must be checked for restriction, pressurization andleak.
Then the system must be evacuate and charged with refrigerant. Refrigerant
amount will vary depending on the length of line set.
Parts included:
Temperature Controller
Evaporator Unit (liquid line solenoid valve and expansion valve are installed)
Condensing Unit (discharge, suction valves and pressure controls are installed)
Liquid Filter
Liquid Indicator

-15-
Parts not included:
Liquid line copper tubing
Suction line copper tubing
Insulated ducts
CAUTION
Liquid and suction line locations may differ from that what is shown below,
please check on the units for proper installations.
NOTE
To prepare rough-in, leave minimum 4” clearances for electrical
wiring and refrigeration piping.
Model No.
Evap Unit W”
x D” x H”
Cond Unit
L” x W” x
H”
Electrical Rating
Evap Unit / Cond
Unit
Min Circuit
Ampacity
Weight (lb)
Evap Unit /
Cond Unit
WM-
2520SSV
WM-252SFCV
11-3/8 x 11-
3/16 x
41-1/2
WM-
252SCUR
18 x 14 x
12
220V-50Hz-.4A
220V-50Hz-3A
10A
45 / 40
WM-
2520SSV-
LA
WM-252SFCV
11-3/8 x 11-
3/16 x
41-1/2
WM-
252SCUR-
LA
18 x 14 x
12
220V-50Hz-.4A
220V-50Hz-3.5A
10A
45 / 40
WM-
4520SSV
WM-452SFCV
11-3/8 x 11-
3/16 x
47-1/2
WM-
452SCUR
18 x 14 x
12
220V-50Hz-.4A
220V-50Hz-3.5A
10A
55 / 60
WM-
4520SSV-
LA
WM-452SFCV
11-3/8 x 11-
3/16 x
47-1/2
WM-
452SCUR-
LA
18 x 14 x
12
220V-50Hz-.4A
220V-50Hz-4A
10A
55 / 60
WM-
6520SSV
WM-652SFCV
11-3/8 x 11-
3/16 x
51-1/2
WM-
652SCUR
24 x 18 x
18
220V-50Hz-1A
220V-50Hz-6A
15A
60 / 90
WM-
6520SSV-
LA
WM-652SFCV
11-3/8 x 11-
3/16 x
51-1/2
WM-
652SCUR-
LA
24 x 18 x
18
220V-50Hz-1A
220V-50Hz-6.5A
15A
60 / 90
Evap Unit
A
B
C
D
WM-25SFCV
41-1/2”
13”
8-13/16”
8-7/16”
WM-45SFCV
47-1/2”
16”
9-5/16”
13-15/16”
WM-65SFCV
51-1/2”
18”
N/A
N/A

-16-
Fig. 3 Temperature Controller (4.5”L X 4.5”W X 3.75H)
Fig. 4 WM-252~652SFCV Evaporator Unit

-17-
Fig. 5 WM-252~452SCUR Condensing Unit
Fig. 6 WM-652SCUR Condensing Unit

-18-
Fig. 7 WM-Liquid Filter Fig. 8 WM-Liquid Indicator
2. Temperature Controller and Air Probe Location
1) The temperature controller can be mounted either inside or outside the wine
cellar, but the air probe must be located inside the wine cellar or the return
duct.
2) The air probe shall be located in the wine cellar 5 ft above the floor or the air
return area, but it shall not be located in the air supply area or other areas where
air is not circulated.
3) Air probe can be pulled out of the temperature controller up to 5 ft. If additional
wires are necessary, 18 gauge wires may be used to extend the air probe.
3. Evaporator Unit Location
1) The WM-252~652SFCV evaporator units should be installed for corner mount
with the supply air on the top and return air on the bottom.
2) Air supply shall be unobstructed minimum 12”; air return shall be unobstructed
minimum 6”.
3) A grille can be used to cover the supply and return with 0~2” clearance; or a 2-
3 ft long duct can be added at the supply and return.
4) There is a gravity drain system, so the unit shall be installed level or with a slight
slope downward the drain connection and the drain line shall be installed slope
down toward the drain.
If rise-up is necessary, a condensation pump must be used.
4. Condensing Unit Location
CAUTION
Low ambient condition kit is required if the temperature will be
below 50°F.

-19-
1) Place the condensing units WM-252~652SCUR in a properly ventilated location.
Otherwise, heat exhausted by the condensing unit will build up andthe cooling
system will not operate properly.
2) Condensing unit shall be elevated to avoid possible flooding and shaded from
direct sun. It shall not be exposed to temperatures higher than 110 °F or lower
than 50 °F.
3) Leave minimum 5 ft clearance for the air exhaust side and leave minimum 1 foot
clearance for the air intake side.
5. Refrigeration Piping and Leak Testing
NOTE
The line connector sizes of liquid filter and indicator, the valve connector
sizes of condensing unit or the line connector sizes of evaporator unit
may not be the same as the listed refrigeration line sizes.
If the condensing unit is installed above the evaporator unit, usethe
suction line one size smaller.
Expansion and solenoid valves have been installed on the liquid line in
the evaporator unit.
The line sizes and refrigerant charges are listed as follows.
Model No.
Equivalent
Line Set
Liquid
Line
Suction
Line
Drain
Line
Recommended
Initial Charge
WM-2520SSV
WM-2520SSV-LA
<= 75 FT
1/4” OD
3/8” OD
3/4” MPT
R134a / 19 OZ
WM-4520SSV
WM-4520SSV-LA
<= 75 FT
1/4” OD
1/2” OD
3/4” MPT
R134a / 26 OZ
WM-6520SSV
WM-6520SSV-LA
<= 75 FT
1/4” OD
1/2” OD
3/4” MPT
R134a / 32 OZ
1)
The piping starts from condensing unit’s receiver discharge valve liquid
filter liquid indicator liquid line toevaporator unit’s liquid lineconnection
(assembled with solenoid valve and expansion valve) suction line
connection insulated suction line to condensing unit’s suction valve.
2) If the line set exceeds 75 ft long, use both inverted U trap and suction
accumulator to prevent liquid from flooding back to the compressor.
3) If the condensing unit is located below the evaporator unit, use inverted U trap
to prevent liquid from flooding back to the compressor. If the elevation difference
is more than 10 ft, use both inverted U trap and suction accumulator.
4) If the condensing unit is located more than 10 ft above the evaporator unit, use
U trap to aid oil returning to the compressor.
5) Complete pipe brazing, check solenoid valve and expansion valve restrictions
and perform leak testing.
6) Hook up the drain line and check if water drains.
6. Connecting Electrical Wires