Taylor-Wharton VJ Bulk Tank - Manual (Page 33)

APPENDIX B: OPTIONAL REFRIGERATION SYSTEM KIT (PN99442400)
Introduction
An internal refrigeration coil is supplied as standard equipment on the VJ-6 ton and VJ-14 ton tanks.
It has been sized to condense gaseous product produced by normal heat leakage into the tank. An
optional one-half horsepower refrigeration condenser unit is available for these two sizes. Figure 1B
shows a schematic for the installed system. The kit consists of the following parts:
1) Condensing Unit
2) Condensing Unit Hood
3) Pressure Control
4) Filter/Drier
5) Sight glass
6) Thermostatic Expansion Valve
For installation of the refrigeration system employ only qualified individuals experienced with the
installation of low temperature refrigeration systems and electrical wiring. Follow each
manufacturer’s instructions supplied with the individual refrigeration components. Copies of these
instructions have been included in this manual for your convenience. Be sure to follow all
regulations, codes, and standards applicable to refrigeration piping and electrical systems.
Condenser Unit
The condenser unit is a 0.5 Horse Power, 115 volt single phase-60 Hz, Copeland Model #M4FL-
0040-IAA for use with R-404A refrigerant. It consists of the compressor, evaporator coil, receiver
tank, and service valves. With the R-404A refrigerant an Evaporator Coil service temperature of
minus 20 degrees F can be obtained.
Refrigeration piping connections: Suction Line – 0.375” flare copper.
Liquid Discharge Line – 0.25” flare copper.
Supplied separately is Copeland’s Model # 005-0882-09 weather hood.
Tank Evaporator Coil
The tank evaporator coil provides approximately 4.4 square feet of surface area. The total volume of
the coil and connecting piping is about 130 cubic inches.
Pressure Control Switch
The pressure control, Johnson Controls Model # P70AB-2, is a pressure-actuated switch that closes
on increasing pressure. Its pressure sensor is to be installed in the condenser suction line. Connection
type is 0.25” flare nut. The pressure switch must be installed in a place protected from the weather.
Electrically, install the Pressure Control’s switch in the line before the Condenser Unit.
With product in the tank, as the tank pressure increases the temperature inside the tank around the
Evaporator Coil will rise. This rise in temperature will cause an increase in the refrigerant pressure
inside the evaporator coil. When the set point of the Pressure Control is reached the pressure switch
closes and activates the Condenser Unit. As the tank contents is refrigerated the temperature in the
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