Technical information

12/01/02
PENN VALVE
HEAD PRESSURE CONTROLS
WATER-COOLED
An adjustable (Pressure Modulated) water-regulating valve
is installed on the water-cooled condenser outlet. A # V46
Johnson Controls Penn valve is used. A label on the valve
housing identifies the Penn valve.
Adjust:
CW - for lower pressure and outlet water temperature with
higher water flow.
CCW – for higher pressure and outlet water pressure
with lower water flow.
CONDENSER OUTLET WATER TEMPERATURE RANGE.
Model
Range
High side pressure
All KM 104 ~ 115 ºF 270 psig.
All DCM 100 ~ 104 ºF 260 psig.
All F 100 ~ 104 ºF 260 psig.
In some cases, if the water-cooled unit has been in opera-
tion for a long period of time, adjusting the water- regulating
valve does not allow proper pressures. In this case the wa-
ter-cooled condenser is likely scaled and requires cleaning.
An acid based condenser cleaner should be circulated through
the coil using an acid pump, until the inner tube is free of
scale. Once the scale is removed, the water-regulating valve
should be adjusted to maintain the range and pressure listed
above.
26
12/20/03
2/20/03