Wine Guardian DP50 Installation, Operation And Maintenance Manual page 7

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 air exhaust from the condenser fan on air-cooled units is hot
and will be 25 to 35 ° F (15 – 18 ° C) above the entering temperature. This may cause
overheating problems in the summer months, especially with high humidity. Exhaust the
hot air to the outside or to a space that is a minimum of 3x larger than the wine room. In
cold weather, this heated air can help to heat the surrounding space.
The water-cooled Wine Guardian 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. We do not recommend using a water-cooled system if you are
using a city water supply.
Each Ducted Self-Contained Wine Guardian system Contains:
✓ A thermal expansion valve to control the flow of refrigerant into the evaporator
coil
✓ A Filter Drier
✓ A manual reset high pressure switch to protect the system from high pressures
✓ The unit uses only R-134a refrigerant
✓ A built-in condensate drain trap. (Do not install an external trap)
The Wine Guardian 60Hz models meet or exceed their rated capacities for total BTU/H
and CFM at design cellar conditions and external static pressures. The Wine Guardian
50Hz models meet or exceed their rated capacities for total watts and cubic liters per
second 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 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. 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.
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
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