Wine Guardian SP50 User manual

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Ducted Split
Wine Cellar Cooling Systems
Installation, Operation and Maintenance Manual
60Hz Models: 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 manual and other literature.
Wine Guardian is a registered trademark (2,972,262) of Air Innovations, Inc.
Edition 12/2021 (Original Instructions)
© Air Innovations 2021
Part No. 15H0328-00

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Table of Contents
Safety ..........................................................................................................................................................4
Lockout/Tagout Procedure................................................................................................................5
Safety Warnings...................................................................................................................................5
Receiving, Inspecting and Unpacking................................................................................................5
Directory of terms....................................................................................................................................6
General Overview.....................................................................................................................................7
Accessories/Options...........................................................................................................................9
Component Overview .......................................................................................................................11
Overview of the Evaporator.........................................................................................................12
Terminal Strip Connections ........................................................................................................13
Overview of the Condenser.........................................................................................................14
Refrigeration Illustration..............................................................................................................15
Wiring Diagram for SP25/SP50 (cont.)..........................................................................................17
Wiring Diagram for SP25 (cont.) ....................................................................................................18
Wiring Diagram for SP50 (cont.) ....................................................................................................19
Wiring Diagram for SP88..................................................................................................................20
Wiring Diagram for SP88 (cont.) ....................................................................................................21
Wiring Diagram for SP88 (cont.) ....................................................................................................22
Wiring Diagram for SP200 ...............................................................................................................23
Wiring Diagram for SP200 (cont.)..................................................................................................24
Wiring Diagram for SP200 (cont.)..................................................................................................25
Specifications .....................................................................................................................................26
Installation ...............................................................................................................................................27
Pre-Installation....................................................................................................................................27
Pre-Installation Planning..................................................................................................................27
Installing The Fan-Coil......................................................................................................................27
Reducing Noise Generation........................................................................................................28
Ductwork..........................................................................................................................................29
Duct Collar and Panel Adjustment............................................................................................30
Drain Line.........................................................................................................................................31
Wiring the Fan-Coil........................................................................................................................31
Installing The Condensing Unit......................................................................................................32

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Installation of Interconnecting Refrigerant Lines..................................................................32
Refrigerant Line-Sets....................................................................................................................33
Sample line Set Configurations..................................................................................................34
Leak Checking and Evacuation Process.................................................................................34
Wiring the Condenser...................................................................................................................35
Start-Up.....................................................................................................................................................36
Refrigerant Charging.....................................................................................................................36
Charging System with Head Pressure Control ......................................................................36
Charge Amount:.............................................................................................................................39
Final Start-up...................................................................................................................................40
Maintenance............................................................................................................................................43
Cleaning the Humidifier (Optional)................................................................................................44
Electric Heat........................................................................................................................................44
Extreme Climate Protection ............................................................................................................44
Maintenance Schedule .....................................................................................................................44
Monthly.............................................................................................................................................44
Yearly.................................................................................................................................................45
Troubleshooting.....................................................................................................................................46
Resetting the High-Pressure Switch.............................................................................................46
Contact and Warranty...........................................................................................................................48
Contact Information...........................................................................................................................49
Warranty...............................................................................................................................................49

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Safety
The safety messages contained in this manual are bold and highlighted in red for quick
identification. A Danger message indicates an imminently hazardous situation which, if
not avoided, can result in death or serious injury. Messages identified by the word
DANGER are used sparingly and only for those situations presenting the most serious
hazards. The following is a typical example of a Danger message as it could appear in
the manual.
HIGH VOLTAGE - RISK OF SERIOUS INJURY OR DEATH
High voltages are present in the cabinets.
Before opening panels turn off all power.
Use the Lockout/Tagout procedure.
The equipment covered by this manual is designed for safe and reliable operation when
installed and operated within its designed specifications. To avoid personal injury or
damage to equipment or property when installing or operating this equipment, it is
essential that qualified, experienced personnel perform these functions, using good
judgment and safe practices. See the following cautionary statements. Installation and
maintenance of this equipment is to be performed only by qualified personnel who are
familiar with local codes and regulations and are experienced with this type of
equipment.
Exposure to safety hazards is limited to maintenance personnel working in and around
the unit. When performing maintenance, always use the Lockout/Tagout procedure,
which is described in this chapter. Observe the maintenance safety guidelines in the
Wine Guardian Manual.
Electrical Hazards - Working on the equipment may involve exposure to dangerously
high voltage. Make sure you are aware of the level of electrical hazard when working on
the system. Observe all electrical warning labels on the unit. There are no electrical
safety lockouts installed within the unit. The power cord attached to the control box must
be disconnected from the power sources prior to working on any part of the electrical
system.
Hot Parts Hazards Electric - Resistance heating elements must be disconnected prior
to servicing. Electric heaters may start automatically, disconnect all power and control
circuits prior to servicing the unit to avoid burns.
Moving Parts Hazards - The motor and blower must be disconnected prior to opening
access panels. The motor can start automatically. Disconnect all power and control
circuits prior to servicing to avoid serious injuries or possible dismemberment. Be sure
to use the Lockout/Tagout procedure when working on these units.

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Lockout/Tagout Procedure
1. Turn off the power switch (indicator light should be off).
2. Unplug the unit from the electrical outlet and cover the outlet to prevent
accidentally plugging in the unit.
Safety Warnings
•Never reach into a unit while the fan is running.
•Disconnect all power sources before working on the unit.
•Check weights to be sure the rigging equipment can support and move the Wine
Guardian unit safely. Note: any specific rigging and installation instructions
located in the Installation section of the Wine Guardian Manual.
•Do not remove access panels until fan impellers have completely stopped.
Pressure developed by moving impellers can cause excessive force against the
access panels.
•Never pressurize equipment above specified test pressure (~300 psi).
•Always ground the outlet to provide adequate protection against voltage surges
and built-up static charges.
•Refer all servicing to qualified service personnel. Servicing is required when the
unit has been damaged in any way.
•Do not use extension cords.
•Do not modify the equipment; it may cause damage to the equipment and will
void the warranty.
Receiving, Inspecting and Unpacking
When receiving the unit, ensure the unit is undamaged and includes all ordered
accessories.
Note: Wine Guardian units are factory assembled and tested prior to shipment.
Wine Guardian units are shipped in individual corrugated boxes.
✓Lift only at the designated handhold locations or fully support from underneath. A
shipment may include one or more boxes containing accessories.
✓Before opening the container, 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 signs 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.
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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Review the Packing Slip to verify:
✓Model #
✓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 unit for the following:
✓An Electrical Power Cord connected to unit
✓24 volt terminal strip for connection to 24 volt thermostats
✓7’ of Clear Plastic Drain Hose
✓Quick Start Guide
Directory of terms
•Ambient Air –The surrounding air outside the cellar such as a room, basement,
garage or outdoors.
•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.
•Condenser (Heat Rejection) Section / Coil –The Condenser Section uses the
compressor, condenser coil and fan to remove heat from the refrigerant to the
ambient air outside the wine cellar. The word condenser refers to the
condensation of the refrigerant from gas to liquid phase.
•CE –Certificate of European conformity.
•CSA/ETL –Canadian Standard Association/Electric Testing Laboratory.
•Exhaust Air –The air leaving the evaporator or condenser section of the Wine
Guardian unit.
•Evaporator (Cooling) Section / Coil –The Evaporator Section uses the cooling
coil and the fan to remove heat from the air inside the wine cellar 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 Evaporator Section is connected to or inside the wine cellar.
•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
cellar 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 cellar and the ambient space. The Wine Guardian
must offset this load.

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•Inlet Air –The air entering the evaporator and condenser sections of the Wine
Guardian unit.
•I.D. –Inside diameter.
•NEC –National Electrical Code.
•O.D. –Outside diameter.
•Psig Pounds –Force per square inch gauge.
•NEC –National Electrical Code.
•Recovery –The amount of cooling the unit does to return the cellar to its set
point temperature after some new load is introduced, such as people or new
cases of warm wine entering the cellar.
•Return Air - The air leaving the cellar and returning to the inlet of the evaporator
coil.
•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 thermostat or
humidistat.
•Supply Air - The air entering the cellar from the discharge of the evaporator coil.
General Overview
The Wine Guardian cooling unit is a professional grade, American-manufactured, split
two-piece climate control system designed specifically for the storage of wine at cellar
temperatures. It is designed for easy installation and operation. Wine Guardian uses
digital electronic controls and R-134a refrigerant. The entire Wine Guardian fan coil
section and the condensing unit is 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 Wine Guardian fan coil section is furnished with a
sealed, UL-approved power cord and plug.
All Wine Guardian 50Hz units carry the CE mark. Each unit is furnished with a sealed,
CE-approved power cord.
Each Ducted Split Wine Guardian Fan Coil Contains the following
✓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

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Each Ducted Split Wine Guardian Condenser Contains the following:
✓A filter 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.
✓Outdoor enclosure.
✓Crankcase heater.
✓Low ambient refrigeration controls (see page 9 for Extreme Climate Protection
option).
The Wine Guardian Pro Split System models meets or exceeds its rated capacities for
total BTU/H and CFM at design cellar conditions and external static pressures. Both the
evaporator and condenser fans are capable of achieving the rated CFM against the
external static pressure imposed by recommended ductwork. Both fans are motorized
impeller plug fans, statically and dynamically balanced, and use permanently lubricated,
direct drive motors that require no maintenance.
All exterior framing of the Wine Guardian’s Evaporator is powder-coated aluminum to
prevent rust and corrosion. All evaporator coils are aluminum tubes and aluminum fins
with a protective anti-corrosion coating. The unit uses an external drain to remove
excess moisture and not reintroduce it into the cellar or ambient space. Multiple
removable access doors are provided to facilitate cleaning and maintenance, duct
connections, and access to components and wiring.
All exterior framing of the Wine Guardian’s Condenser is Anodized Aluminum to prevent
rust and corrosion. Each Condensing unit houses a compressor. Compressors are
rotary, self-lubricating, permanently sealed, hermetic reciprocating type compressors,
with internal overload protection and capacitor start with a minimum of one-year
manufacturer’s warranty and an optional five-year warranty. Compressors are mounted
on rubber-in-shear isolators to reduce noise and vibration.
Electric power is supplied by a single factory-furnished cord and plug. All external
controls are digital and proprietary to Wine Guardian products. Only the approved
communication cable and Wine Guardian controllers are suitable for proper system
operation.

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Accessories/Options
Electric Heat
The electric heating option is factory installed and includes primary and secondary over-
temperature protection devices per UL and NEC.
Extreme Climate Protection
This bundle includes both a factory-installed Low-Ambient-, and a factory-installed High-
Ambient upgrade. Low-Ambient protection makes the Wine Guardian capable of
exposure to low ambient temperatures. This feature controls the condenser fan
operation based on head pressure and heats the oil reservoir, including a 3R
Condenser Fan. We recommend this bundle if the system will experience condenser
inlet temperatures below 20°F (-7°C) or above 115°F (37°C) to protect the system itself.
This bundle will protect the system from temperatures as low as -20°F (-29°C) or as
high as 115°F (52°C)
•Check valve –installed in the liquid line between the head pressure control valve
and receiver.
•Fan cycling switch.
•Heater –for the receiver with thermostat control.
•Adjustable low - pressure cutout timer.
•Anti-Corrosion Coating –a coating on the Condenser Coil to protect against salt
air and other corrosive environments.

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Humidifier and Humidistat
Another popular option for the Wine Guardian Pro Split system is a humidifier. The
humidifier is available as a freestanding unit powered by the Wine Guardian system,
with its own power cord and humidistat or as an integrated unit that bolts to the side of
any Wine Guardian ducted system. The Wine Guardian humidifier requires a water
supply and drain for operation. Please refer to the Humidifier Manual for Installation
Instructions.
Duct Collar Kits
Ductwork for the Wine Guardian system is sold in kits by size for each unit. Each kit
contains two adapter collars, one 25-foot (7.3 meters) length of round flexible duct, and
two straps. The number of duct kits needed depends on the installation layout. The size
of the ductwork kit depends on the selected model of Wine Guardian system. Follow
installation instructions carefully. Poorly or incorrectly installed ducts can degrade the
performance of your unit dramatically.
Extended Compressor Warranty
The Wine Guardian 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.

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Component Overview
Cabinet – The cabinet (outer housing) is constructed of aluminum with a powder-coated
finish for corrosion protection.
Condensing Section – Ambient air is circulated through the condenser section by a
direct drive, permanently lubricated, motorized impeller blower. This section also
contains the compressor and the electrical controls.
Evaporator Section – Cellar air is circulated through the evaporator section by another
blower, similar to the condensing section. The large evaporator-coil face area eliminates
condensate carry-over, reduces air pressure drop and optimizes heat transfer. A drain
pan is located directly below the coil to capture condensate and is fabricated from
aluminum to prevent rust and corrosion. The electric heating coil, if ordered, is factory
installed between the evaporator coil and the blower and is complete with contactors
and limit controls.
Electrical Controls – Most of the electrical components and controls are in a separate
area accessible on the side of the unit. All wiring is in accordance with the NEC. Wires
are numbered and color coded to match the wiring diagrams.
Internal Drain Trap - Water condensate from the evaporator coil fills the trap and forms a
seal to prevent air from being drawn back through the drain tube. This allows the drain
pan to drain freely. No external trap is required.
Supply/Return Duct Collar –A composite-material, single-direction duct collar is
provided for both the inlet and outlet of the evaporator section. Two duct collars are
provided with the unit; every duct collar is interchangeable with access doors to control
and direct the airflow. These duct collars can be removed via the two quarter-turn
screws.
Refrigerant Circuit –The factory charged circuit includes a thermal expansion valve with
an external equalizer, sight glass with moisture indicator, a filter dryer, an automatic
low-pressure switch, and a manual reset high-pressure switch. For the Extreme Climate
Protection option, an automatic pressure switch controls the operation of the condenser
blower, and a heating element is added to the compressor oil reservoir.
Removable Panels –Insulated composite-material removable panels are provided on
the evaporator of the unit. These panels can be removed via the two quarter-turn
screws.

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Overview of the Evaporator
Fig.1

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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
Yc & Cc = Evaporator to Condenser
24 Volt Connection

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Overview of the Condenser
Fig. 2

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Refrigeration Illustration
Fig. 3

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Wiring Diagram for SP25/SP50
Fig. 4 (SP25/SP50 Evap Molex connections)

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Wiring Diagram for SP25/SP50 (cont.)
Fig. 5 (SP25/SP50 Control Assembly)

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Wiring Diagram for SP25 (cont.)
Fig. 6 (DS025 Condenser)

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Wiring Diagram for SP50 (cont.)
Fig. 7 (DS050 Condenser)

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Wiring Diagram for SP88
Fig. 8 (SP88 Evap Molex connections)