Owner`s manual

10630460082
TEMPERATURE/PRESSURE CHART
REFRIGERANT TYPE
R404A
+ 10 LB
DISCHARGE PRESSURE
WATER TEMPERATURE
AIR TEMPERATURE 40 65 90
50– 174 177 180
60– 202 205 208
70– 230 233 236
80– 265 269 272
90– 300 304 307
100– 328 334 340
NOTE: The thermostatic expansion valve is non-adjustable on all models
CONDENSER MODULATING VALVE (Water Cooled Only)
The reason for using a water modulating valve is to supply the correct amount of water to the condenser to
maintain the proper operating pressure in the refrigeration system high side. The flow of water through the valve
is increased as the high side pressure rises and decreases as high side pressure lowers.
FIGURE 3. ADJUSTMENT SCREW
To calibrate the amount of water flow with the refrigeration system high side pressure, turn adjustment screw
located on end of the valve opposite the bellows (see Figure 3). Turn adjustment screw counterclockwise to
raise opening point. Opening point of valve should be set to maintain proper operating pressure in refrigeration
system high side. Refer to TEMPERATURE/PRESSURE CHART. Closing point of valve should be set low
enough to close valve during compressor stand by periods.