AERCO Innovation (G-10-1350 to G-11-0563) - Manual (Page 69)

Chapter 6 Innovation Series Water Heaters
GF-128
Maintenance USER MANUAL OMM-0079_0B
07/21/11 AERCO International, Inc.
· 100 Oritani Dr. · Blauvelt, NY 10913 · Ph: 800-526-0288
Page 69 of 200
9. HydroSkrub is biodegradable, and in most instances may be purged down sewers. Check with local
authorities before disposing of any complex compositions
10. Turn off water, shut off the pump and immediately close discharge valves to prevent backflow.
11. Completely drain pump bucket. Disconnect the hoses from equipment and thoroughly rinse the bucket,
pump, and associated hoses used.
6.8.3 Testing HydroSkrub Effectiveness
There are two methods of testing the effectiveness of HydroSkrub during cleaning: the calcium carbonate
spot test of the circulating solution and the charting of a trend in the pH of the cleaning solution.
Calcium Carbonate Spot Test
A calcium carbonate spot test is performed by exposing a form of calcium carbonate to the HydroSkrub
solution. Samples of the deposit, a Tums or Rolaids tablet, or bare concrete can be used. Observe the
reaction of the HydroSkrub solution on the calcium carbonate. Foaming and bubbling indicates the
solution is still active. Little or no reaction indicates that the solution is expended. This test should be
performed near the end of the circulating time. If the solution has been expended, more HydroSkrub will
be required to complete the job. If the solution is still active at the end of the time, all the scale has been
dissolved.
pH Trend Charting
The initial pH of the cleaning solution will measure between 1-3 (See pH sheet on HydroSkrub
packaging). To test the effectiveness of the circulating solution as a function of pH, take readings at
regular intervals and chart as a trend. Note that the deposits can cause a premature jump in the pH. After
circulating for approximately 75% of the cycle time, begin testing the pH at 10-15 minute intervals. Once
the solution’s pH reads 6.0-7.0 on three or more consecutive readings, the solution is expended. If the
pH reads below 6.0 after the circulating time, the application is clean.
6.9 CONDENSATE DRAIN TRAP
The Innovation Water Heater contains a condensate trap as shown in Chapter 2, Figure 2-7. The trap is
located external to the unit and attached to the drain connection from the exhaust manifold. This trap
should be inspected and, if necessary, cleaned to ensure proper operation. To inspect and clean the trap,
proceed as follows:
1. Disconnect the external condensate trap by loosening the union pipe connection between the trap and
the exhaust manifold drain.
2. Remove the connections on the inlet and outlet sides of the condensate trap shown in Figure 6-9.
3. Loosen the four (4) thumbscrews securing the cover on the condensate trap. Remove the cover.
4. Remove the float from the condensate trap.
5. Remove the orifice gasket from the trap.
6. Thoroughly clean the trap, float and gasket. Also inspect the drain piping for blockage. If the trap
cannot be thoroughly cleaned, replace the trap.
7. After the above items have been thoroughly cleaned and inspected, replace the orifice gasket and float
in the condensate trap and replace the trap cover.
8. Reassemble all piping and hose connections to the condensate trap inlet and outlet. Reconnect the
trap to exhaust manifold drain.