ENGLISH
Installation Manual
15
Installation
Cleaning and Flushing the Water Loop
Water Connection
For vibration isolation, it is recommended that flexible steel braided hoses be in stalled instead of
hard piping between the vertical risers and the unit chassis.
Supply Grille installation
1. Install the supply grille(s) into the cabinet discharge opening. Insure there are no air gaps
between the cabinet supply air and the grille. This helps prevent recirculation of supply air into the
return air opening behind the drywall.
2. Secure grille(s) into the drywall via two screws.
Cleaning and flushing the Water Loop
After the piping system is complete, the flexible hose connector should be doubled back to
complete the water circuit external to the unit (avoiding trash settle-ut in the condenser). An extra
pipe may be necessary to connect the hose kits. See page 15 for antifreeze/water mixture by
volume.
3. Water circulation system should be filled with clean water using the water make up connections.
Note:
Air vents should be opened during filling.
4. With the air vents closed, start the circulating pump and then crack the air vents to bled off the
trapped air, assuring circulation through all components of the system.
Note:
Make up water must be available to the system to replace the volume formerly occupied by
the air that is bled off.
5. With the air vented and the water circulating, the entire system should be checked for leaks with
repairs made as required.
6. Operate the supplementary heat system making checks per manufacturer's instructions. During
this operation, visual checks should be made for leaks that may have occurred due to increased
heat. Repair as required.
7. Open the system at the lowest point for the initial blow down (making sure the make up water is
equal to the water being dumped). Continue blow down until the water leaving the drain runs
clear, but not less than 2 hours.
8. Shut down pumps and supplementary heat system. Reconnect the hoses placing the water-to
refrigerant heat exchanger in the water circulating system.
Note:
Vents should be open when the pumps and supplementary heat system are shut down.
Flushing the water loop
Summary of Contents for AKWW0093AA0
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