Wine Guardian PRO Series Technical Document

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SPLIT Systems
Professional Grade
Split Cooling Systems
Installation, Operation and Maintenance Guide
SP25, SP50, SP88, SP200
Manufactured by:
Syracuse, NY
wineguardian.com airinnovations.com
Wine Guardian reserves the right, without notice, to make changes to this document at its sole discretion. Please
visit our web site for the most current version of the Wine Guardian PRO manual and other literature. Wine Guardian
is a registered trademark (2,972,262) of Air Innovations, Inc. Revision 09-2019© Wine Guardian PRO Split System
Part No. 15H0168-00

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TABLE OF CONTENTS
Directory of Terms...........................................................................................................1
Illustrations......................................................................................................................2
Receiving, Inspecting and Unpacking the Wine Guardian PRO Split System ................3
Review the Packing Slip to Verify ........................................................................................ 3
Check the fan coil unit for: .................................................................................................... 3
Check the condensing unit for................................................................................................ 3
General Description.........................................................................................................4
The Wine Guardian PRO Split System Contains.................................................................... 4
Wine Guardian PRO Split System Fan Coil Unit ................................................................. 5
Electrical Controls............................................................................................................... 5
Condensing Unit ................................................................................................................. 5
Accessories and Optional Equipment .................................................................................. 6
Heating Coils ...................................................................................................................... 6
Duct Collars and Flexible Ducts.......................................................................................... 6
Extended Compressor Warranty......................................................................................... 6
Low Ambient Option............................................................................................................ 6
Condensate Pump.............................................................................................................. 6
Humidifier............................................................................................................................ 6
Overview of the PRO Split Systemfan coil........................................................................... 7
Wine Guardian PRO Split System specifications sheet......................................................13
Wiring Diagram for SP25 and SP50 Units..........................................................................14
Wiring Diagram for SP88 Units ..........................................................................................15
Wiring Diagram for SP200 Units ........................................................................................16
24-Volt Contactor Detail Sheet...........................................................................................17
Condensing Section Wiring Schematic for SP25................................................................17
Condensing Section Wiring Schematic for SP50................................................................17
Condensing Section Wiring Schematic for SP88................................................................18
Condensing Section Wiring Schematic for SP200..............................................................19
Safety............................................................................................................................23
Safety Message Conventions .............................................................................................23
Danger...............................................................................................................................23
Warning .............................................................................................................................23
Caution..............................................................................................................................23
Lockout/Tagout Procedure ..................................................................................................24

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Safety Considerations...........................................................................................................24
Safety Hazards ..................................................................................................................24
Electrical Hazards..............................................................................................................24
Electrical Shock Hazards...................................................................................................24
Hot Parts Hazards..............................................................................................................24
Moving Parts Hazards........................................................................................................24
Equipment Safety Interlocks..................................................................................................25
Main Power Switch................................................................................................................25
Installation.....................................................................................................................27
Pre-installation Test ..............................................................................................................27
Air Flow Diagram ..................................................................................................................27
Planning the Installation................................................................................................29
Addressing Items in the Planning Process............................................................................29
Performing a Pre-installation Check......................................................................................29
Installing the Fan Coil Unit ............................................................................................30
Floor Mounting...................................................................................................................30
Wall Mounting....................................................................................................................30
Ceiling Mounting................................................................................................................30
Typical Mounting Arrangements ......................................................................................31
Handling and Installation....................................................................................................31
Floor Mount........................................................................................................................32
Rod Mount.........................................................................................................................32
Shelf Mount........................................................................................................................32
Optional ductwork connection on same wall Fig. 4...........................................................32
Installing the Ductwork and Grilles................................................................................33
Duct Collars.......................................................................................................................33
Location of Supply and Return Grilles...................................................................................33
General Duct Recommendation............................................................................................34
Reducing Noise from the Unit ...............................................................................................34
Installing the Condensate Drain Connection.................................................................35
Installing the Drain Line.........................................................................................................35
Priming the Drain Trap..........................................................................................................35
Wiring the Fan Coil Unit for Power................................................................................36
Installing the Condensing Unit.......................................................................................37
Installation of Interconnecting Refrigerant Lines (Suction and Liquid) ...................................37
Split System Interconnecting Line Sizing Chart..................................................................38
Sample Piping Configurations...............................................................................................39
Leak Checking and Evacuation Process...............................................................................40

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Wiring ................................................................................................................................40
Refrigerant Charging..........................................................................................................41
Determining the amount of charge.....................................................................................41
Procedures for Charging System with Head Pressure Control ..............................................42
Superheat..........................................................................................................................43
Sub-Cooling.......................................................................................................................43
Split System Operations Chart...........................................................................................44
Installing the Remote interface controller and Communication Cable...........................45
Mounting the Remote Interface Controller.............................................................................45
Installing the PRO Split SystemRemote Sensor............................................................45
Mounting the Remote Sensor................................................................................................45
Joining the Communication Cable.................................................................................45
Changing Jumper Positions ..................................................................................................45
Standard Controller Functions.......................................................................................45
Inspection and Start Up Checklists ...............................................................................45
Receiving and Inspecting......................................................................................................45
Handling and Installing..........................................................................................................45
Starting-up the Unit...............................................................................................................45
Starting-up and Operating the Wine Guardian PRO Split System ................................46
Turn on the Unit ....................................................................................................................46
Testing the Fan.....................................................................................................................46
Running the Unit ..................................................................................................................46
Cycling the Unit.....................................................................................................................47
Setting the Remote Interface Controller ................................................................................47
Regulating the Wine Room Temperature..............................................................................47
Changing the Air Flow Direction............................................................................................47
Maintenance..................................................................................................................48
General ................................................................................................................................48
Cleaning the Condensate Drain System................................................................................49
Cleaning the Humidifier.........................................................................................................49
Heating Coil Option...............................................................................................................49
Maintenance Schedule ................................................................................................50
Monthly.................................................................................................................................50
Yearly....................................................................................................................................50
Troubleshooting ...........................................................................................................51
Typical start up problems .................................................................................................51
Unit does not start up .......................................................................................................51
Power switch light is on and the remote interface controller light is off...............................51
Power switch light is on and the remote interface controller light is on...............................51

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Unit is operating and blows evaporator air ,.....................................................................52
Room temperature too cold (below 51 degrees) when unit is running................................52
Room temperature too cold (below 51 degrees) when unit is not running ..........................52
Humidity too low or supply air is too cold, without optional humidifier.................................52
Humidity too low, without optional humidifier......................................................................53
Humidity too low, with optional humidifier...........................................................................53
Humidity too high when unit is running but not cooling.......................................................53
Humidity too high when unit is not running.........................................................................53
Humidity too high when unit is running and cooling............................................................53
Unit operates but the power switch light is not ON.............................................................54
Unit is leaking water...........................................................................................................54
Unit is running properly, but the sound of the unit objectionable.........................................54
High Pressure Switch has Shut the Unit Down ..................................................................55
Instructions to Reset High Pressure Switch .......................................................................55
Advanced Troubleshooting............................................................................................56
Evaporator Coil is Freezing................................................................................................56
High pressure switch keeps tripping...................................................................................56
Unit cycles on and off more than 8 times/hr .......................................................................56
High pitched or loud rubbing noise, clanking or vibration....................................................56
Replacing the blowers........................................................................................................56
Contact and Warranty Information ................................................................................57
Contact Information...............................................................................................................57
Warranty and Warranty Procedure .....................................................................................57
Warranty .......................................................................................................................58

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Directory of Terms
Ambient Air – The surrounding area outside the wine room such as a room, basement, garage or
outdoors.
BTU/H – British thermal units/hour. A unit of measurement to describe the power of heating and
cooling system.
CFM – Cubic feet per minute. A unit of measurement for the amount of air handled by the fan.
Condensate / Condensation – The water formed out of the air when it is cooled below a certain
temperature (called dew point). Often referred to as “sweating” on pipes and cold surfaces. This water
collects at the bottom of the evaporator or cooling coil and drains out of the unit through the drain line.
Condensing Unit (Heat Rejection) – The condensing unit uses the compressor, condenser coil and
fan to remove heat from the refrigerant to the ambient air outside the wine room. The word condenser
refers to the condensation of the refrigerant from gas to liquid phase.
CSA/ETL – Canadian Standards Association/Edison Testing Laboratory (product compliance to
safety standards)
F –(Degrees) Fahrenheit
Fan Coil Unit (Evaporator Cooling) – The fan coil unit uses the cooling coil and the fan to remove
heat from the air inside the wine room to the refrigerant, cooling the air and condensing moisture out
of the air. The word evaporator refers to the evaporation of the refrigerant from liquid to gas phase in
the coil. The fan coil unit is ducted to or can be placed inside the wine room.
Flexible Duct – Round ducts with steel reinforced plastic liners, a layer of insulation and an outer
plastic layer used to convey the air from the unit to the wine room or ambient space.
Grille or Diffuser – Inlet or outlet plates to direct the airflow or protect the inside of the unit.
Heat Gain / Loss – The amount of cooling or heating expressed in watts transferred between the wine
room and the ambient space. The PRO Split System must offset this heat/gain loss.
Inlet Air – The air returning from the wine room to the PRO Split System fan coil.
I.D. – Inside diameter
NEC – National Electrical Code
O.D. – Outside diameter
Psig Pounds – Force per square inch gauge
Recovery – The amount of cooling the unit does to return the room to its set point temperature after
some new heat load is introduced, such as people or new cases of warm wine entering the room.
Return Air - The air leaving the room and returning to the inlet of the fan coil. (See Inlet Air above)
TXV – Thermal expansion valve
VAC – Volts alternating current
SP – Static pressure. Unit of measurement (inches of water column) of the pressure of the air handled
by the fan.
Set Point – The desired temperature or humidity set on the remote interface controller or humidistat.
Supply Air - The air entering the wine room from the discharge of the fan coil.

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Illustrations
Overview of the PRO Split System Fan coil..........................................................7
Refrigeration Illustration of the PRO Split System fan coil.....................................7
Wine Guardian PRO Split System specifications sheet.........................................9
Wiring diagrams for SP25 and SP50 units..........................................................10
Wiring diagram for the SP88 unit ........................................................................11
Wiring diagram for the SP200 unit ......................................................................12
24-volt contactor detail sheet ..............................................................................13
Condensing section wiring schematics................................................................14
Airflow diagram ...................................................................................................22
Mounting illustrations...........................................................................................26
Sample piping illustration .................................................................. .................34

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Receiving, Inspecting and Unpacking the Wine Guardian
PRO Split System
NOTE: Wine Guardian PRO Split Systems are factory assembled and tested prior to
shipment. The PRO Split System consists of two separate components, the fan coil
and condensing unit.
Each PRO Split System component is shipped in a corrugated box. A shipment may include one or
more boxes containing accessories.
Lift at the designated handhold locations only or fully support from underneath.
Before opening, inspect the packing crates or boxes for obvious signs of damage or
mishandling.
Write any discrepancy or visual damage on the bill of lading before signing.
Inspect all equipment for any sign of damage caused during transit.
Report all visual or concealed damage to the carrier and file a claim immediately.
Thoroughly inspect the contents for any visible damage or loose parts.
Review the Packing Slip to Verify
Model number
Factory installed options
Unit accessories
If any items listed on the packing slip do not match your order information, contact the place of purchase
immediately.
Check the fan coil unit for:
An electrical power cord connected to the fan-coil
7’ of clear plastic drain line for connection to the fan-coil
One supply duct collar and one return duct collar
Plastic bag with quick start manuals – Keep for your records
Check the condensing unit for:
condensing unit complete with outdoor enclosure
IMPORTANT
If this procedure is not followed, the shipping company may reject the claim and the
consignee may suffer the loss. Do not return the shipment to the factory.

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General Description
View Fig. 1 and Fig. 2 starting on page 7 for details
The PRO Split System is a professional grade, American-manufactured, split two-piece climate control
unit designed specifically for the storage of wine at wine room temperatures. It is designed for easy
installation and operation. Wine Guardian PRO Split System uses 24 volt controls and R-134a
refrigerant. The entire PRO Split System fan coil and condensing unit sections are tested at the factory.
All components are of a high quality standard commercial grade. The entire system is approved by
ETL according to UL 1995 and CSA safety standards. All wiring complies with NEC. Each PRO Split
System fan coil section is furnished with a sealed, UL-approved power cord and plug.
The Wine Guardian PRO Split System Contains
1. A Wine Guardian PRO Split System Fan Coil Unit with:
A thermal expansion valve to control the flow of refrigerant into the evaporator coil
A built-in condensate drain trap. No external trap is required.
A removable control panel for ease of service
Supply duct collar
Return duct collar
24 volt terminal strip for connection to standard thermostats/humidistats
2. A Condensing Unit with:
A filer dryer to keep the refrigerant clean and free of contaminants
A sight glass to observe the level of refrigerant
A manual reset high pressure switch on the discharge to protect the compressor from high
pressures.
Auto reset low pressure switch
24-volt contactor for control of fan coil unit
Crankcase heater
Low ambient refrigeration controls
Outdoor enclosure
IMPORTANT
Design and specifications are subject to change without notice

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PRO Split System Fan Coil Unit
The PRO Split System fan coil unit meets its rated capacities for total BTU/H and CFM at design room
conditions and external static pressures. The fan coil unit is capable of rated CFM against the static
pressure imposed by recommended ductwork. The fan is a motorized impeller type, statically and
dynamically balanced, and uses permanently lubricated direct drive motors requiring no maintenance.
The PRO Split System fan coil section operates as air passes through the cooling coil and is cooled by
the refrigerant inside the coil. This causes any excess humidity in the air to condense and be captured
in the drain pan and piped outside the unit. Air then enters the fan where it is pressurized and
discharged out of the unit through one of five openings. Optional heating coils are located between the
cooling coil and the fan. These coils heat the air to prevent low temperatures in the wine room.
All exterior framing of the PRO Split System is powder coated 0.063 inch gauge aluminum to prevent
rust and corrosion. All coils are aluminum tubes, aluminum fins to protect against premature corrosion.
The unit uses an external drain to remove excess moisture and not reintroduce it into the room or
ambient space. Removable, multiple access doors are provided to facilitate cleaning and maintenance,
duct connections, and access to components and wiring. The fan coil has at least five discharge outlets
to facilitate custom installations.
Each unit is provided with a 24 volt terminal strip for connection to most standard 24 volt thermostats
or humidistats. A thermostat is not provided as standard equipment.
Electrical Controls
The main electrical control components are located on a separate panel accessible through a side door panel or by
removal of the on/off panel from the system chassis. All wiring is in accordance with the NEC. Wires are
numbered and color coded to match the wiring diagrams.
Electric power is supplied by a single factory-furnished cord and plug.
Condensing Unit
Compressors are rotary, self-lubricating, permanently sealed, hermetic reciprocating-type compressors,
with internal overload protection and capacitor start. They include a minimum of 20 months
manufacturer’s warranty and an optional five-year warranty. Compressors are mounted on rubber-in-
shear isolators to reduce noise and vibration. Additional features include a liquid line filter drier, Head
Master Controls, a liquid line receiver, refrigerant sight glass, manual reset high pressure switch and
auto reset low pressure switch. Each unit is housed in a painted aluminum enclosure suitable for
outdoor installation. The outdoor enclosure has an integral fan for air movement across the condenser
coil, pre-drilled penetrations for electrical connections and external king valves for ease of refrigerant
piping connections.
IMPORTANT
The air exhaust from the condensing unit is hot and will be 25 to 35 degrees F above the entering
temperature. The condensing units are rated for a maximum temperature of 115 degrees F. The
condensing units should be installed in a well-ventilated area to ensure proper air flow across the
condenser coil and to limit short cycling.

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Accessories and Optional Equipment
Heating Coils
An optional heating coil is built in and requires no additional power source. The electric
heating option is factory installed and includes primary and secondary over-temperature
protection devices per UL and NEC.
Duct Collars and Flexible Ducts
Ducting for the Wine Guardian PRO Split System is sold in kits by size for each unit. Each kit
contains two adapter collars, one 25-foot length of round flexible duct and two straps. The
number of duct kits needed depends on the wine room layout and application. The size of the
kit depends on the model Wine Guardian PRO Split System selected. Follow installation
instructions carefully. Poorly or incorrectly installed ducts can degrade the performance of your
unit dramatically.
Extended Compressor Warranty
The Wine Guardian PRO Split System uses only the best commercially available compressors
on the market. However, since the compressor is the single most expensive component in the
unit, it is recommended that you purchase the extended warranty option.
Low Ambient Option – Standard on all Wine Guardian PRO Split Systems
A factory-installed low ambient option is available that makes the Wine Guardian PRO Split
System capable of exposure to low ambient temperatures. This feature controls the condenser
fan operation based on head pressure and heats the compressor oil reservoir. The low ambient
option is recommended whenever the condenser section is exposed to air temperatures below 40
degrees F. to a minimum of 20 degrees F.
Extreme Low Ambient Option
A factory installed extreme low ambient option is available that makes the Wine Guardian Pro
Split System capable of exposure to temperatures as low as -20 Deg F (-29 Deg C) . This feature
includes the addition of a receiver heater, an adjustable timer for low pressure cutout, fan cycling
switch, check valve and thermostat. The Extreme Low Ambient Option is recommended
whenever the condenser section is exposed to air temperatures below 20 Deg F (-7 Deg C) to a
minimum of -20 Deg F (-29 Deg C).
Condensate Pump
An optional Wine Guardian PRO Split System automatic condensate pump is available to pump
the water to a remote sink, drain pipe or outside. It requires a separate 120-volt electrical outlet.
Humidifier
Another popular option for the Wine Guardian PRO Split System is a humidifier. The
humidifier is available for split system installation and can be retrofitted onto any existing
Wine Guardian PRO Split System unit. Each humidifier is furnished with a communication
cable connection to plug into the side of the Wine Guardian PRO SERIES System fan coil
unit. It can then be controlled by any 24 volt humidistat or combination thermostat/humidistat
device. The humidifier mounts directly onto the Wine Guardian PRO Split System unit and
requires a water supply and drain for operation.
CAUTION
CAREFULLY FOLLOW THE INSTALLATION INSTRUCTIONS INCLUDED WITH THE HUMIDIFIER.
REFER TO THE INSTRUCTIONS CONTAINED IN THE BOX FOR THE HUMIDISTAT.

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Overview of the Wine Guardian PRO SERIES
Split System fan
Fig. 1
Drain Pan
(Inside Shroud)
Evaporator
Inlet
Evaporator
Fan
Evaportator
Outlet(s)
Drain Tube
Outlet w/
Internal Drain
Trap
Refrigerant Piping
to Condensing Unit
Power Switch
24V Control
Connect to
Condensing Unit
24 Volt
Terminal Strip
Removable panel
Multi-panel design
Humidifier
Connection
Drain Tube w/
Internal Drain Trap
Fig. 2

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Terminal Strip Connections
White = Heat
Cyan = 24 Volt AC Common
Yellow = Cool
Red = 24 Volt AC Power
Green = Fan
% = Humidity Connection

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Overview of the Wine Guardian PRO SERIES Split System Condensing Unit
Refrigerant Line
Connections
Condenser Coil
High Pressure Switch
Primary Power
24 Volt Contactor Enclosure
Compressor
Refrigerant
Sight Glass
Fig. 3

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See next page for
magnified image
Fig. 4

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Fig. 5

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Fig. 6
Model Number
SP25
SP50
SP88
SP200
Dimensions - Nominal
A – Width
Inches
14.00
22.00
22.00
22.375
B – Height
Inches
14.132
14.132
14.132
18.00
C – Length
Inches
16.75
16.75
16.75
20.50
D – Evap. Discharge (OD)
Inches
7.94
9.938
9.938
11.94
DI – Evap. Inlet (OD)
Inches
7.938
9.938
9.938
11.94
E – Outlet opening width
Inches
9.980
10.00
10.00
11.63
F -Outlet opening height
Inches
11.13
11.13
11.13
15.00
G – Drain outlet location
Inches
0.656
0.919
0.919
0.848
AA – Discharge opening
height
Inches
7.50
7.50
7.50
9.188
BB – Discharge opening
width
Inches
7.00
11.00
11.00
11.188
CC – Inlet opening height
Inches
7.066
7.066
7.066
9.00
DD – Inlet opening width
Inches
7.00
11.00
11.00
11.188
EE – Suction Line (OD)
Inches
0.375
0.500
0.500
0.500
FF – Discharge Line (OD)
Inches
0.250
0.250
0.250
0.375
Weight
Lbs.
CH – Condenser Height
Inches
26.07
26.07
26.07
26.07
CL – Condenser Length
Inches
12.27
12.27
12.27
12.27
CW – Condenser Width
Inches
34.00
34.00
34.00
34.00
Table 1

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Wine Guardian PRO SERIES Split System Specifications sheet

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Wiring Diagram for SP25 & SP50
Fig. 4

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Wiring Diagram for SP88 Units
Fig.5