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© 2013 Pentair Equipment Protection
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WATER USAGE
CONDENSER
The water-cooled air conditioner uses water as the
cooling medium for the condensation side of the
hermetic refrigeration system. This water is passed
through a heat exchanger that uses the cool water to
lower the temperature of the hot gaseous refrigerant,
causing it to condense. The water is warmed by
this exchange of heat and is passed out of the air
conditioner at an elevated temperature.
The inlet and outlet fittings for the standard air
conditioner are as shown in Figure 5. A sealant is
recommended when connecting the inlet and outlet
water lines to prevent leakage.
It is extremely important for the air conditioner to
have an uninterrupted supply of clean cooling water.
Interference with the water supply will cause the unit to
automatically shut down and require manual reset.
RESET
IN
OUT
WATER
POWER
CABLE
Figure 5
RESET BUTTON AND WATER VALVE
The location of the reset button is shown in Figure 5. Should the water supply be cut off for any reason, the reset
button will trip shutting off the air conditioner. After restoration of the water supply, the unit can be restarted by
pushing the reset. Pushing this button should restore proper function of the air conditioner. Overloading of the air
conditioner may also cause the reset button to trip.
The valve that controls the flow of condensation water is located behind the front access panel. This valve
modulates the flow of water to the condensing coil. Water flow varies according to a variety of loading conditions,
including electrical load, inlet water temperature, ambient air temperature, cabinet construction, etc. The
maximum flow rate in the DESIGN DATA, page 3, is given for the conditions of maximum rated load, maximum
water temperature, and maximum ambient temperature, and reflects the highest flow rate anticipated for the
unit.
NOTE:
This valve has been preset at the factory for the correct operation of the unit. The setting of
the valve should not be altered.
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-19626-Hoffman-LB110426GW010-Water-Cooled-Rack-AC-230V-4000-BTU-Indoor.aspx