Wine Guardian Pro DP25 User manual

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Ducted Systems
Professional Grade
Packaged Cooling Systems
Installation, Operation and Maintenance Manual
DP25, DP50, DP88, DP200
Manufactured by:
Syracuse, NY
www.wineguardian.com www.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. Edition 01-2019 © Air Innovations 2019
Part No. 15H0167-00

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TABLE OF CONTENTS
Directory of Terms...........................................................................................................5
Illustrations ......................................................................................................................6
Receiving, Inspecting and Unpacking the Wine Guardian PRO Ducted Systems...........7
Receiving and Inspecting the Unit ........................................................................................7
Review the Packing Slip to Verify............................................................................................7
General Description.........................................................................................................8
Standard Specifications .................................................................................................9
The Wine Guardian PRO Unit Contains ...............................................................................9
Accessories and Optional Equipment............................................................................10
Heating Coils ........................................................................................................................10
Water Cooled........................................................................................................................10
Duct Collars and Flexible Ducts............................................................................................10
Extended Compressor Warranty...........................................................................................10
Low Ambient Protection........................................................................................................10
Condensate Pump................................................................................................................10
Humidifier and Humidistat.....................................................................................................10
High Ambient........................................................................................................................10
Overview of the Wine Guardian PRO Unit .................................................................11
Overview Illustration of Water-Cooled System......................................................................13
Overview Illustration –Vapor Compression System..............................................................13
Wiring diagrams....................................................................................................................14
Terminal Strip Connections...................................................................................................26
Wine Guardian PRO dimensional data..................................................................................27
Wine Guardian PRO Dimensional Data................................................................................27
Wine Guardian PRO SERIES Specifications sheet...............................................................28
Safety ............................................................................................................................29
Safety Message Conventions .............................................................................................29
Danger..................................................................................................................................29
Warning................................................................................................................................29
Caution.................................................................................................................................29
Lockout/Tagout Procedure ..................................................................................................30
Safety Considerations...........................................................................................................30
Safety Hazards.....................................................................................................................30
Electrical Hazards.................................................................................................................30
Electrical Shock Hazards......................................................................................................30
Hot Parts Hazards ................................................................................................................30
Moving Parts Hazards...........................................................................................................31
Equipment Safety Interlocks .................................................................................................31
Main Power Switch ...............................................................................................................31
Installation .....................................................................................................................33
Pre-installation Test..............................................................................................................33

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Air Flow Illustration Ducted Model.........................................................................................34
Planning the Installation.................................................................................................35
Addressing Items in the Planning Process............................................................................35
Performing a Pre-installation Check......................................................................................35
Locating the Unit...................................................................................................................35
Grilles ...................................................................................................................................36
Reducing Noise from the Unit...............................................................................................36
Installing the Unit Outdoors...................................................................................................36
Mounting the Unit ..........................................................................................................37
Floor Mounting......................................................................................................................37
Wall Mounting.......................................................................................................................37
Ceiling Mounting...................................................................................................................37
Installing the Condensate Drain Connection.........................................................................37
Installing the Drain Line ........................................................................................................38
Priming the Drain Trap..........................................................................................................38
Wiring the Unit for Power...............................................................................................38
Installing the Ductwork and Grilles ................................................................................40
Location of Supply and Return Grilles...................................................................................40
General Duct Recommendation............................................................................................41
Using Ductwork.....................................................................................................................41
Cold Air to/from cellar or room..............................................................................................41
Warm Air to/from Condenser ................................................................................................41
Typical Mounting Arrangements ..................................................................................42
Duct Adapter Sizes........................................................................................................43
Ducting Options ...................................................................................................................43
Single Outlet Duct Installation .............................................................................................43
Inspection and Start-up Checklists................................................................................44
Receiving and Inspecting......................................................................................................44
Handling and Installing..........................................................................................................44
Starting-up the Unit...............................................................................................................44
Starting Up and Operating the Wine Guardian PRO .....................................................45
Turn on the Unit....................................................................................................................45
Testing the Fan.....................................................................................................................45
Running the Unit ..................................................................................................................45
Cycling the Unit.....................................................................................................................46
Setting the Thermostat..........................................................................................................46
Regulating the Wine Cellar Temperature..............................................................................46
Changing the Air Flow Direction............................................................................................46
Maintenance..................................................................................................................47
General.................................................................................................................................47
Cleaning the Filters...............................................................................................................48
Cleaning the Condensate Drain System ...............................................................................48
Cleaning the Humidifier (optional).........................................................................................48

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Heating Coil..........................................................................................................................48
Low Ambient.........................................................................................................................49
Maintenance Schedule ................................................................................................49
Monthly.................................................................................................................................49
Yearly ...................................................................................................................................49
Troubleshooting ............................................................................................................50
Typical Start-up Problems ...................................................................................................50
Unit Does Not Start-up ........................................................................................................50
Power Switch Light is Off......................................................................................................50
Power switch light is on and the thermostat light is off ..........................................................50
Power switch light is on and the thermostat light is on ..........................................................50
Unit is operating and blows evaporator air, ........................................................................50
Problems Controlling Cellar Temperature.............................................................................51
Cellar Temperature too cold (below 51°) when unit is running ..............................................51
Room Temperature is too cold (below 51°) when unit is not running.....................................51
Problems Controlling Cellar Humidity....................................................................................51
Humidity too low or supply air is too cold, without optional humidifier....................................51
Humidity too low, without optional humidifier.........................................................................51
Humidity too low with optional humidifier...............................................................................51
Humidity too high when unit is running but not cooling..........................................................51
Humidity too high when unit is not running............................................................................52
Humidity too high when unit is running and cooling...............................................................53
Other Miscellaneous Problems .............................................................................................53
Unit operates but the power switch light is not ON................................................................53
Unit is leaking water..............................................................................................................53
Unit is running properly, but the sound of the unit is objectionable........................................53
High Pressure Switch has Shut Down the Unit ..........................................................54
Instructions to Reset High Pressure Switch .......................................................................54
Advanced Troubleshooting............................................................................................55
Evaporator coil is freezing.....................................................................................................55
High pressure switch keeps tripping......................................................................................55
Unit cycles on and off more than 8 times/hr..........................................................................55
High pitched or loud rubbing noise, clanking or vibration ......................................................55
Replacing the blowers...........................................................................................................55
Warranty........................................................................................................................56
Labor Allowance for Warranty Repairs..........................................................................57
Contact and Warranty Information.................................................................................58
Contact Information...............................................................................................................58
Warranty and Warranty Procedure .....................................................................................58

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Directory of Terms
Ambient Air –The surrounding area 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 cellar or
room. The word condenser refers to the condensation of the refrigerant from gas to liquid phase.
CSA/ETL –Canadian Standard Association/Electric Testing Laboratory
Exhaust Air –The air leaving the evaporator or condenser section of the Wine Guardian PRO unit.
Evaporator (Cooling) Section / Coil –The Evaporator Section uses the cooling coil and the fan to
remove heat from the air inside the cellar or 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 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 PRO must offset this load.
Inlet Air –The air entering the evaporator and condenser sections of the Wine
Guardian PRO unit.
Inlet Air –The air returning from the wine room to the Wine Guardian PRO fan coil.
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
or room.
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 or room from the discharge of the evaporator coil.

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Illustrations
Overview of the Wine Guardian PRO system...................................................................11
Overview –Wine Guardian PRO system ..........................................................................12
Overview –Wine Guardian PRO Water Cooled system...................................................13
Wiring diagrams DP25 ......................................................................................................14
Wiring diagrams DP50 ......................................................................................................17
Wiring diagrams DP88 ......................................................................................................20
Wiring diagrams DP200 ....................................................................................................23
Wine Guardian PRO dimensional data..............................................................................27
Wine Guardian PRO specifications sheet..........................................................................29
Airflow illustration.............................................................................................................35

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Receiving, Inspecting and Unpacking the Wine Guardian
PRO Ducted Systems
Receiving and Inspecting the Unit
NOTE: Wine Guardian PRO units are factory assembled and tested prior to
shipment.
Wine Guardian PRO units are shipped in individual corrugated boxes.
✓Lift at the designated handhold locations only 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 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.
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
Refer to overview illustrations starting on page 12
The Wine Guardian PRO cooling units are professional grade, American manufactured, self-
contained climate control units designed specifically for the storage and preservation of wine, fur,
musical instruments, and data rooms and other specialty environments. They are designed for
easy installation and operation. Wine Guardian PRO uses R-134a refrigerant and the units are
tested at the factory and shipped as a single package. All components are of a high quality,
standard commercial grade. The entire units are approved by ETL according to UL 1995 and
CSA safety standards. All wiring complies with NEC. Each unit is furnished with a sealed, UL-
approved power cord and plug.
The Wine Guardian PRO systems come in horizontal models, are completely self-contained and
includes either an integral air cooled or water-cooled condenser .The units are functionally divided
into two sections, the evaporator (or cooling section) and the condenser (or heat rejection section).
Each section contains a coil to add or remove heat and a fan to move the air through the coil and
into or out of the cellar or adjacent space. The Wine Guardian PRO units are designed to be used
as a remotely mounted unit with external ductwork connections.
Air first 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.
Heating coils are located between the cooling coil and the fan. These coils heat the air to prevent
low temperatures in the cellar. The thermostat, located in the cellar, turns on the cooling or
heating as needed to maintain its setpoint. It does not allow the cooling and heating to be on at
the same time.
The compressor and condenser sections are activated whenever the unit is cooling. The condenser
fan draws air from the surrounding or ambient space either directly or through a duct. The air is
first drawn through a filter to remove any airborne dust particles to keep the coil clean. The air
flows through the condenser coil where it absorbs heat from the refrigerant in the coil. The air is
then discharged out of the unit by the condenser fan.
The water-cooled ducted system requires cooling water to be piped to the unit for proper
operation. The cooling water absorbs the refrigerant heat through the unit’s water-cooled
condenser coil. Warm water is then directed out of the unit back to the cooling water system or to
a drain.
IMPORTANT
The air exhaust from the condenser fan on air-cooled units ishot and will be 25 to 35degrees F
above the entering temperature.This may cause overheating problems in the summer months,
especially with high humidity. Exhaust the hot air to the outside. In the winter, this heated air
can help to heat the surrounding space.

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Standard Specifications
The Wine Guardian PRO Unit Contains
✓A thermal expansion valve to control the flow of refrigerant into the evaporator coil
✓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 to protect the system from high pressures
✓A auto reset low pressure switch to protect the system from low pressures
✓The unit uses only R-134a refrigerant
✓A built-in condensate drain trap. (no external trap is required)
✓24 volt control connection for use with today’s smart thermostats
The Wine Guardian PRO 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
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 PRO is powder coated 0.063” gauge aluminum to prevent
rust and corrosion. All coils are either copper tubes with aluminum fins or aluminum tubes with
aluminum fins. The unit uses an external drain to remove excess moisture and not reintroduce it into
the cellar or ambient space. Removable, multiple access doors are provided to facilitate cleaning and
maintenance, duct connections, and access to components and wiring.
The condenser coils have pre-filters on the inlet to prevent dust and dirt from fouling the coils,
thereby reducing capacity. Each unit has at least three discharge outlets on both the evaporator and
the condenser coils to facilitate custom installations. Water-cooled units have copper straight tube
connections for both cooling water inlet and outlet.
Each unit is provided with a terminal strip for connection to most common 24-volt thermostats,
smart devices or building management systems to control cooling, heating and humidification. The
unit does not ship with a thermostat.
Compressors are rotary, self-lubricating, permanently sealed, hermetic reciprocating type compres-
sors, 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.
IMPORTANT
Design and specifications are subject to change without notice

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Accessories and Optional Equipment
Heating Coils
Heating coils are optional and require no additional power source. The electric heating feature is
factory installed and includes primary and secondary over-temperature protection devices per UL
and NEC.
Water Cooled Option
A water-cooled option is available that uses a tube-in-tube heat exchanger in place of the
condenser coil and fan. Waste heat from the refrigerant is transferred to the water. A two-way
control valve is used to regulate the flow of water to maintain head pressure.
Duct Collars and Flexible Ducts
Ducting for the Wine Guardian PRO 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 layout. The size of the kit depends on the model Wine Guardian PRO
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 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 Protection
A factory installed Low Ambient Protection feature is standard on the Wine Guardian PRO units.
This feature controls the condenser fan operation based on head pressure and heats the oil reservoir.
The Low Ambient Option (LAO) is recommended whenever the condenser section is exposed to air
temperatures below 40 degrees F. This can occur if the unit is placed in a garage or under an
outdoor canopy, or if the unit is located inside a heated space but the condenser air is ducted in
from the outside.
Condensate Pump
An optional Wine Guardian PRO automatic condensate pump is available to pump the excess
condensate water to a sink or remote drain. It requires a separate 120-volt electrical outlet.
Humidifier and Humidistat
Another popular option for the Wine Guardian PRO is a humidifier. The humidifier is available as
a freestanding unit powered by the Wine Guardian PRO system, as freestanding unit with its own
power cord and humidistat or as an integrated unit that bolts to the side of any Wine Guardian
PRO ducted system. The Wine Guardian PRO humidifier requires a water supply and drain for
operation.
CAUTION
CAREFULLY FOLLOW THE INSTALLATIONS INSTRUCTIONS INCLUDED WITH THE HUMIDIFIER.
REFER TO THE INSTRUCTIONS CONTAINED IN THE BOX FOR THE HUMIDISTAT.
High Ambient
A factory installed high ambient feature is standard (on DP25 and DP50 models only) that makes the
Wine Guardian PRO capable of exposure to high ambient temperatures. The high ambient feature
consists of high output fan and condenser coil. The high ambient option is recommended whenever
the condenser section is exposed to air temperatures above 100 degrees F to a maximum of 120
degrees F.

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Overview of the Wine Guardian PRO Unit
Refer to overview illustrations starting on page 12
Cabinet – The cabinet and access doors are constructed of aluminum with a powder coated finish for
corrosion protection and an attractive, maintenance-free appearance. Areas in contact with cold
temperatures are lined with insulation to prevent condensation .
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. If the water-cooled option is purchased, a heat exchanger is used in place of the
condenser coil and blower.
Evaporator Section – Cellar air is circulated through the evaporator section by another blower the
same as above. 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
contactor(s) and limit controls.
Electrical Controls – Most of the electrical components and controls are located 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.
Factory Tested – All Wine Guardian PRO units are factory run-tested and checked for operational
performance.
Filters –Nominal 1 inch thick filters are provided on the condenser inlet to protect the coils from
dust and dirt. These filters are washable and reusable.
Humidity Option – The optional humidifier comes fully assembled and tested for field installation
onto the Wine Guardian PRO without any additional electrical power wiring. It automatically adds
moisture into the cellar by the evaporation of water over a distribution pad. The same Wine Guardian
PRO thermostat controller supplied with the Wine Guardian PRO unit automatically controls
humidity as well as temperature.
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.
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 low ambient option, an automatic pressure
switch controls the operation of the condenser blower and a heating element is added to the compres-
sor oil reservoir. See Fig 1 - Refrigeration Illustration on next page.

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Overview Illustration of the Wine Guardian PRO Unit
Fig. 1
Overview Illustration - Vapor Compression System
Evaporator
outlet to space
Duct Collar
Evaporator Fan
Duct Collar
Evaporator
inlet to space
Cabinet
Drain Pan
Optional Electric
Heater Coil
(behind shroud)
Internal Drain Trap
Drain Tube Outlet
Condenser Fan
Condenser Coil
Condenser Filter
Condenser Inlet
from Ambient
Power Switch, Power Cord Controller
and Humidifier Connections
Evaporator
(Cooling) Coil
Condenser (Heat Rejection)
Coil
Compressor
Thermal
Expansion
Valve
Filter/Dryer
Manual reset
high pressure
switch
Condenser Outlet
Auto Reset Low
Pressure Switch
Refrigerant
Sight Glass

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Overview Illustration of Water-Cooled System
Fig. 3
Overview Illustration –Vapor Compression System
Fig. 4
Duct Collar
Evaporator Outlet
to Space
Evaporator Inlet
to Space
Duct Collar
Cabinet
Evaporator
Fan
Optional Electric
Heater Coil
(behind shroud)
Internal
Drain Trap
Water Cooled
Condenser
Water In
Water Out
Power Switch, Power Cord
Controller and Humidifier
Connections
Evaporator (Cooling)
Coil
Compressor
Water Out
Water In
Water Cooled
Condenser
Manual Reset
High Pressure Switch
Filter/Dryer
Refrigerant
Sight Glass
Thermal
Expansion
Valve
Auto Reset Low
Pressure Switch

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Wiring diagrams
Fig.5

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