Vintage Cellars 4200 VSi CellarPro User Manual
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insulation and a vapor barrier on the warm side of the insulation. Doors also 
should be insulated and tightly sealed with weather s t r i p p i n g a r o u n d 
t h e p e r i m e t e r o f t h e d o o r . Surface-mounted fixtures are 
recommended over recessed lighting, which can allow air to leak into the 
cellar.
 
It is important that all walls, joints, doors and windows, electrical outlets 
and/or switches, pipes, vents and light fixtures be sealed to prevent air and 
moisture from entering the cellar. If there is a leak in the cellar, the cooling unit will 
build up excess condensation. 
 
CellarPro 3200 and 4200 cooling units are equipped with a condensate 
management system, which includes a stainless steel pan, a thermostatically-
controlled electric heating element, and an overflow drain at the rear of the 
cooling unit. 
 
We strongly recommend that the overflow drain line (shipped loose with the 
cooling unit) be connected to the overflow drain (as shown in the installation 
section), and that the cooling unit be mounted to tilt slightly backwards, so that 
any overflow condensate is channeled safely to the overflow drain line. In addition, 
we recommend turning on the electric heating element to burn off excess 
condensate that accumulates in the stainless steel pan during the initial cooling of 
the cellar and during high run-times, as well as in high-humidity environments. 
 Fan Speeds
Your fan speed setting will depend on the thermal load on the wine cellar, and 
the resulting BTU that is required to cool and maintain your wine cellar at the 
desired temperature. 
 Ventilation
Adequate ventilation is critically important for the proper operation of your 
CellarPro cooling unit. 
 
 
OUTSIDE THE CELLAR 
(At the rear of the cooling unit)
Condenser Air Exhaust. CellarPro 3200 and 4200 Series cooling units create 
significant hot air which must be exhausted into an appropriately-sized space 
in order for the heat to dissipate. If the space is constrained and/or too small, 
the heat will not dissipate. In this event, the cooling unit will be forced to re-
circulate its hot air exhaust and/or the static pressure will back up the cooling 
unit. If this happens, the cooling unit’s ability to create cold air inside the cellar 
will be compromised.