Wine Guardian WGS40 Technical Document

1
Ducted Split
Wine Cellar Cooling Systems
Installation, Operation and Maintenance Guide
WGS40, WGS75, WGS100, WGS175
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 manual and other literature.
Wine Guardian is a registered trademark (2,972,262) of Air Innovations, Inc.
Edition 02-2014
© Air Innovations, 2014

1
Table of Contents
Directory of Terms ...........................................................................................................4
Illustrations.......................................................................................................................5
Receiving, Inspecting and Unpacking the Wine Guardian Unit........................................9
Review the Packing Slip to Verify ..........................................................................................9
Check the fan coil unit for: ...................................................................................................... 9
Check the condensing unit for..................................................................................................9
General Description .......................................................................................................10
The Wine Guardian Ducted Split System Contains................................................................ 10
Wine Guardian Fan Coil Unit .............................................................................................................11
Electrical Controls..............................................................................................................................11
Condensing Unit ................................................................................................................................11
Accessories and Optional Equipment ................................................................................. 12
Heating Coils......................................................................................................................................12
Duct Collars and Flexible Ducts..........................................................................................................12
Extended Compressor Warranty .......................................................................................................12
Low Ambient Option..........................................................................................................................12
Condensate Pump .............................................................................................................................12
Humidifier..........................................................................................................................................12
Overview of the Wine Guardian fan coil............................................................................................13
Wiring Diagram for WGS40 ...............................................................................................................15
Wiring Diagram for WGS75 Units ......................................................................................................16
Wiring Diagram for WGS100, WGS175 Units.....................................................................................17
24-Volt Contactor Detail Sheet 24 ....................................................................................................18
Condensing Section Wiring Schematic for WGS040 ..........................................................................19
Condensing Section Wiring Schematic for WGS100 ..........................................................................21
Condensing Section Wiring Schematic for WGS175 ..........................................................................22
Safety.............................................................................................................................23
Safety Message Conventions ..............................................................................................23
Danger ...............................................................................................................................................23
Warning .............................................................................................................................................23
Caution ..............................................................................................................................................23
Lockout/Tagout Procedure ................................................................................................... 24
Safety Considerations............................................................................................................ 24
Safety Hazards ...................................................................................................................................24
Electrical Hazards...............................................................................................................................24
Electrical Shock Hazards ....................................................................................................................25
Hot Parts Hazards ..............................................................................................................................25
Moving Parts Hazards........................................................................................................................25
Equipment Safety Interlocks ..................................................................................................25
Main Power Switch................................................................................................................. 25
Installation......................................................................................................................27
Pre-installation Test ...............................................................................................................27
Air Flow Diagram.................................................................................................................... 28

2
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 ...............................................................................................................................31
Typical Mounting Arrangements .....................................................................................................31
Handling and Installation...................................................................................................................31
Floor Mount.......................................................................................................................................31
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
Wiring ................................................................................................................................................41
Refrigerant Charging..........................................................................................................................41
Determining the amount of charge ...................................................................................................42
Procedures for Charging System with Head Pressure Control..............................................42
Superheat ..........................................................................................................................................44
Sub-Cooling........................................................................................................................................44
Split System Operations Chart...........................................................................................................45
Installation of the Wine Guardian Remote Sensor.........................................................49
Mounting the remote sensor ..................................................................................................49
Joining Communication Cable .......................................................................................51
Changing Jumper Positions (Averaging reading from Remote Sensor)..............................................52
Standard Controller Functions .......................................................................................53
Inspection and Start-up Checklists.................................................................................60
Handling and Installing...........................................................................................................60
Starting-up the Unit................................................................................................................60
Starting-up and Operating the Wine Guardian Split System..........................................61
Turn on the Unit ................................................................................................................................61

3
Testing the Fan ..................................................................................................................................61
Running the Unit ...................................................................................................................62
Cycling the Unit......................................................................................................................62
Setting the Remote Interface Controller.................................................................................62
Regulating the Wine Cellar Temperature............................................................................... 62
Changing the Air Flow Direction............................................................................................. 63
Maintenance .................................................................................................................64
Cleaning the Filters................................................................................................................65
Cleaning the Condensate Drain System........................................................................66
Cleaning the Humidifier.......................................................................................................... 66
Heating Coil Option................................................................................................................66
Maintenance Schedule...................................................................................................67
Monthly..........................................................................................................................67
Yearly.....................................................................................................................................67
Troubleshooting ............................................................................................................68
Typical Start-up Problems ....................................................................................................68
Problems Controlling Cellar Temperature.............................................................................. 69
Problems Controlling Cellar Humidity..................................................................................... 70
Other Miscellaneous Problems ..............................................................................................72
High Pressure Switch has Shut the Unit Down......................................................................72
Instructions to Reset High Pressure Switch ........................................................................73
Advanced Troubleshooting ....................................................................................................74
Instructions to Reset High Pressure Switch ........................................................................75
Contact and Warranty Information.................................................................................76
Contact Information................................................................................................................ 76
Warranty and Warranty Procedure ...................................................................................... 76
Warranty ........................................................................................................................77

4
Directory of Terms
Ambient Air –The surrounding area outside the wine cellar 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 cellar. 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 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 fan coil unit is ducted to or can be placed 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 wine 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 heat/gain loss.
Inlet Air –The air returning from the wine room to the Wine Guardian fan coil.
I.D. –Inside diameter
NEC –National Electrical Code
O.D. –Outside diameter 外径
Psig Pounds –Force per square inch gauge
Recovery –The amount of cooling the unit does to return the cellar to its set point temperature after
some new heat 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 fan coil. (See Inlet Air above)
TXV –Thermal expansion valve TXV
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 cellar from the discharge of the fan coil.

5
Illustrations
Overview of the Wine Guardian fan coil..............................................................13
Refrigeration Illustration of the Wine Guardian fan coil.......................................13
Ducted split system specifications sheet.............................................................14
Wiring diagram for WGS40.................................................................................15
Wiring diagram for WGS75.................................................................................16
Wiring diagrams for the WGS100 and WGS175.................................................17
24-volt contactor detail sheet .............................................................................18
Condensing section wiring schematics ............................................................19
Airflow diagram .................................................................................................28
Mounting illustrations ........................................................................................31
Sample piping illustration....................................................................................39

9
Receiving, Inspecting and Unpacking the Wine Guardian Unit
NOTE: Wine Guardian units are factory assembled and tested prior to shipment. The
Wine Guardian Ducted Split System consists of two separate components, the Wine
Guardian fan coil and condensing unit. These ship from separate manufacturing
facilities and therefore may not arrive on the same date and time.
Each Wine Guardian 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
A remote interface controller with communications cable plugged into side of unit
A drain line coming out of the unit
A 24 volt contactor and enclosure
One supply duct collar and one return duct collar
Check the condensing unit for:
Weather proof enclosure, top and sides
Installation, Operation and Maintenance manual
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.

10
General Description
View Fig. 1 and Fig. 2 on page 13 for details
The Wine Guardian cooling unit is a professional grade, American-manufactured, split two-piece
climate control unit 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 is tested at the factory and the condensing unit is
shipped separately. 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.
The Wine Guardian Ducted Split System Contains
1. A Wine Guardian 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
Remote interface controller and control cable
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

11
Wine Guardian Fan Coil Unit
The Wine Guardian fan coil unit meets its rated capacities for total BTU/H and CFM at design cellar
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 Wine Guardian 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 cellar.
All exterior framing of the Wine Guardian is powder coated 0.063 inch gauge aluminum to prevent
rust and corrosion. All coils are copper tubes, aluminum fins, with an electrocoating to protect against
premature corrosion. 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 fan coil has at least five
discharge outlets to facilitate custom installations.
Each unit is provided with a pre-wired and tested remote interface controller for remote mounting
within the wine cellar. The remote interface controller has multiple control functions for cooling,
heating and operation. It has a fully automatic mode to switch between heating and cooling.
Electrical Controls
Themainelectricalcontrolboardandcomponentsarelocatedonaseparatepanelaccessiblethroughasidedoor
panelorbyremovaloftheon/offpanelfromthesystemchassis. 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. All external controls are digital
and proprietary to Wine Guardian products. Only approved communication cable and Wine Guardian
controllers are suitable for proper system operation.
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,
Sporlan Head Master Controls, a liquid line receiver and refrigerant sight glass. Each unit is housed in
a painted steel enclosure suitable for outdoor installation. The outdoor enclosure has adequate area for
ventilation and refrigerant piping penetrations.

12
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 is sold in kits by size for each unit. Each kit contains two
adapter collars, one 8m length of round flexible duct and two straps. The number of duct kits
needed depends on the wine cellar layout and application. The size of the kit depends on the
model Wine Guardian selected. 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.
Low Ambient Option –Standard on all Wine Guardian Ducted Split Systems
A factory-installed low ambient option is available that 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 compressor oil reservoir. The low ambient option is
recommended whenever the condenser section is exposed to air temperatures below 40 degrees
F.
Condensate Pump
An optional Wine Guardian automatic condensate pump is available to pump the water to a
remote sink, drain pipe or outside. It requires a separate 120 volt electricaloutlet.
Humidifier
Another popular option for the Wine Guardian is a humidifier. The humidifier is available for
split system installation and can be retrofitted onto any existing Wine Guardian unit. Each
humidifier is furnished with a communication cable connection to plug into the side of the
Wine Guardian fan coil unit. It is then controlled by the same remote interface controller that
is used for the operation of the Wine Guardian unit. The humidifier mounts directly onto the
Wine Guardian unit and requires a water supply and drain for operation.
CAUTION
CAREFULLY FOLLOWTHE INSTALLATIONS INSTRUCTIONS INCLUDED WITH THE
HUMIDIFIER. REFER TO THE IN-
STRUCTIONS CONTAINED IN THE BOX FOR THE HUMIDISTAT.
IMPORTANT
The air exhaust from the condensing unit is hot and will be 15 to 20 degrees C above the entering
temperature. The condensing units are rated for a maximum temperature of 46 degrees C. 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.

13
Fig. 2
Overview of the Wine Guardian fan coil
Fig. 1

14
Fig. 3
Model Number
WGS40
WGS75
WGS100
WGS175
Dimensions - Nominal
A –Width
cm
35.6
55.9
55.9
56.8
B –Height
cm
35.9
35.9
35.9
45.7
C –Length
cm
42.5
42.5
42.5
52.1
D –Evap. Discharge (OD)
cm
20.2
25.2
25.2
30.3
DI –Evap. Inlet (OD)
cm
20.2
25.2
25.2
30.3
E –Outlet opening width
cm
25.3
25.4
25.4
29.5
F -Outlet opening height
cm
28.3
28.3
28.3
38.1
G –Drain outlet location
cm
1.7
2.3
2.3
2.2
AA –Discharge opening height
cm
19.1
19.1
19.1
23.3
BB –Discharge opening width
cm
17.8
27.9
27.9
28.4
CC –Inlet opening height
cm
17.9
17.9
17.9
22.9
DD –Inlet opening width
cm
17.8
27.9
227.9
28.4
EE –Suction Line (OD)
cm
1.0
1.3
1.3
1.3
FF –Discharge Line (OD)
cm
0.6
0.6
0.6
1.0
Weight
Lbs.
CH –Condenser Height
cm
46.4
46.4
56.5
68.9
CL –Condenser Length
cm
61.3
61.3
76.8
81.9
CW –Condenser Width
cm
48.6
48.6
59.4
97.2
Table 1

15
Wiring Diagram for WGS40
Fig. 4

16
Wiring Diagram for WGS75 Units
Fig.5

17
Wiring Diagram for WGS100, WGS175 Units
Fig. 6

18
24-Volt Contactor Detail Sheet 24
Fig. 7

19
Condensing Section Wiring Schematic for WGS040

20
Condensing Section Wiring Schematic for WGS75

21
Condensing Section Wiring Schematic for WGS100

22
Condensing Section Wiring Schematic for WGS175