AERCO RECON 1000 - Manual (Page 91)

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 6 – MAINTENANCE
OMM-0103_0A AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 91 of 178
GF-147 Phone: 800-526-0288 PRI: 10/28/2014
Figure 6-9 B: Connecting to Internal Drain Valve
6.8.2 Cleaning Procedure
Cleaning Procedure
1. Slowly add the following amount of HydroSkrub solution to the circulation bucket.
RECON 500 RECON 1000
13 Gallons 16 Gallons
2. Open the drain valve, outlet hose connection valve and turn on the pump. Periodically check
for leaks and maintain the liquid level in the bucket. A lowering volume level is an indication
that there is an open drain in the system.
3. Check the cleaning circuit to ensure that the HydroSkrub solution is flowing from the
circulation bucket, through the pump and the heater and back to the top of the top of the
bucket.
4. Return discharge foaming indicates an active HydroSkrub solution and the presence of
mineral deposits in the equipment.
5. Additional HydroSkrub and/or water may be required to maintain circulation and to prevent
the pump from cavitating.
6. Circulate the cleaning solution through the heat exchanger and piping for 1 to 3 hours.
Estimate the circulation period based on the time in service and water hardness. When the
foaming action stops, HydroSkrub strength is depleted (two pounds of deposits removed per
gallon used) or the equipment is free from calcium and other water-formed mineral deposits.
7. Periodically test the solution for effectiveness to determine if more HydroSkrub is needed.
Refer to “Testing HydroSkrub Effectiveness” in the next section for details. If the cleaning
solution is expended before circulation time is up, additional HydroSkrub will be needed and
circulation time may be extended to complete the cleaning.
8. Upon completion of the cleaning process, begin flushing the solution by adding clean water to
the circulation bucket, then disconnect the return valve and hose connection from the top of
the circulating bucket and thoroughly flush. Continue water flushing the equipment for a
minimum of 10 minutes or until discharge runs clear.
DRAIN VALVE
PARTIAL RIGHT SIDE VIEW
HOSE FROM
CIRCULATION
BUCKET