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WATER
The air conditioner water supply does not require any special treatment, but care should be taken to avoid any
gross contamination. Corrosives may cause leakage within the coil and water lines. Mineral rich water will cause
scaling of the coil, degrading performance. Particulates may cause rapid erosion of the coil and could result in
clogging of the control valve.
NOTE:
A filter to clean the air conditioner water supply is recommended.
If the temperature of the inlet water is higher than shown in the DESIGN DATA, page 3, it will result in a higher
flow rate, and may cause unit shut down. High inlet water temperatures should be avoided.
When the air conditioner is shut down, either because of a thermostat cut-out or a loss of power, the water
flow should gradually diminish to zero. If water flow persists, it may indicate a malfunction of the control valve.
Information on the specific valve employed is supplied with the air conditioner.
FREEZING AND DRAINING THE SYSTEM
If the unit is to be shipped to or stored in an area that experiences climatic extremes, care must be taken to fully
drain the unit to avoid freezing.
To completely drain the unit, it is recommended that 100 psi maximum compressed air be applied to the water
inlet, while lifting the spring of the valve with a screwdriver to allow free passage of water. An alternate means
would be to start the air conditioner and allow the refrigeration system pressure to open the valve while air
pressure is applied to the inlet.
89048707
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
WARNING
The air conditioner can be severely damaged by freezing
if not properly drained. Damage due to freezing is not
covered by the warranty.
© 2013 Pentair Equipment Protection
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