Installation
Date
Facility Water In Pre-Strainer
Facility Water In Post-Strainer
Filters
The Deionizing Filter Is a full flow filter. (All flow leaving the unit will cycle through the filter.) All
valves are in the vertical position when operating under normal conditions (not changing or
bypassing any filters). To change the deionizing filter, open the bypass (H) top valve and then
close the two bottom valves. After changing the filter, reverse operation. (Open lower valves,
then close top valve.) The other two (micron) filters have normal in-line isolation valves for
changing filters. All handles are in horizontal position when bypassing the filter.
Cooling a Water-Cooled Condenser
Never hook a water-cooled unit to a potable water supply without providing back flow protection.
A drop in pressure in the water supply could cause back flow, resulting in the possible
contamination of the potable water supply.
Water-cooled chillers require Facility Water to cool the condenser during operation. The
amount of flow is controlled automatically by a valve Affinity installs on the condenser.
This unit requires facility water flow of 10 gallons per minute. Facility water temperature should
be between 14 and 26 degrees C. Facility water pressure must be between 35 and 75 psig.
Loop 2 will give the best performance (be more stable) when both loops are in operation.
Connect the Facility Water supply to the "WATER IN" fitting at the bottom of the chiller.
Connect the Facility Water return to the "WATER OUT" fitting. Use connecting lines of the size
shown on the coolant diagram (inside diameter) to reduce pressure loss.
Note
: The coolant lines of all water-cooled chillers have been blown dry with low pressure air
before shipping to protect the units from freezing and subsequent damage. This may cause the
condenser to be dry which, in turn, could result in failure to start upon initial start-up (there could
be no water in the condenser to absorb the heat). This is easily corrected by pressing the high
pressure reset switch a few times to initiate flow through the Facility Water side of the chiller.
O:\MANUALS\D6625 (10/03/2002)