AERCO KC1000 Heater 2002 - Manual (Page 56)

MAINTENANCE
6-14
Figure 6.19 – HydroSkrub Pumping System Set-Up Diagram for KC-1000
Pumping System Set-Up Directions
1. Turn off the water heater and close all isolation valves.
2. Drain at least half of the Heat Exchanger water-side volume. The KC-1000 heat exchanger holds a
total volume of 23 gallons. Use 11.5 gallons of HydroSkrub mixed with an equal volume of water (23
gallons of HydroSkrub/water solution) to clean.
3. Close the Drain Valve.
4. Check that all connections are secure and all appropriate equipment valves are open.
Cleaning Procedure
5. Slowly add prescribed amount of HydroSkrub to the circulating bucket.
6. If recommended quantity exceeds volume of the bucket, turn on pump at this stage.
7. Plug in the pump and periodically check for leaks. Maintain liquid level in the bucket, as a lowering
volume indicates an open drain or system. Operating level should be 1/3 of the receiving bucket, the
remaining space is for foaming and expansion.
8. Check circuit again. The HydroSkrub solution should flow from the circulation bucket, through the
pump and the equipment and back to the top of the bucket.
9. Return discharge foaming indicates active HydroSkrub solution and presence of mineral deposits.
10. Additional HydroSkrub and/or water may be required to maintain circulation and to prevent the pump
from cavitating.
11. Circulate through the Heat Exchanger and piping for 1 to 3 hours. Estimate circulation period based
on the time in service and water hardness. If heating equipment is more than 40 gallons, circulation
time may need to be extended to complete cleaning. When foaming action stops, HydroSkrub