Aerco SmartPlate User Manual download pdf (Page 59)

SmartPlate Installation, Operation & Maintenance Manual

CHAPTER 8 – CORRECTIVE MAINTENANCE

OMM-0069_0E AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 59 of 138

SP-100 Phone: 800-526-0288 PRI: 11/26/2013

Table 8-1. AERCO HydroSkrub Solution Required For De-Scaling Heat Exchanger

SmartPlate Model

Heat Exchanger

Volume (gallons)

HydroSkrub Required

(Gallons)

Single-Wall Heat Exchangers

SP23 1.70 0.90

SP33 2.40 1.20

SP45 3.40 1.70

SP69 5.20 2.60

SP150 11.30 5.70

Double-Wall Heat Exchangers

SPDW23 2.00 1.00

SPDW32 2.80 1.40

SPDW42 3.70 1.90

SPDW61 5.50 2.80

SPDW113 10.20 5.10

6. Drain at least half of the Heat Exchanger volume shown in the above Table for the

SmartPlate Model being de-scaled.

7. While making sure that the Drain Valve is tightly closed, pour the correct amount of

HydroSkrub into the Air Vent opening in the Manifold.

8. Add water as needed until the Manifold is full.

9. Replace the 1” NPT Air Vent.

10. Set the Control Box POWER Switch to the ON position and ensure that the Recirculation

Pump is operating.

11. Allow the HydroSkrub/Water solution to circulate through the Heat Exchanger and piping

for 1 to 3 hours, depending on the amount of scale deposit that is inside the Heat

Exchanger. Since the amount of scaling will be hard to estimate, it should be based on the

time in service and water hardness.

12. Upon completion of the previous step, turn OFF the POWER Switch on the Control Box to

stop the Recirculation Pump.

13. Remove the 1” NPT Air Vent and open the Heater Drain Valve.

14. Flush with fresh water for at least 3 minutes.

15. Next, close the Drain Valve and fill with fresh water.

16. Apply new thermal sealant (Loctite 565 or equiv. NSF61 approved) to the threads of the 1”

NPT Air Vent and install it in the Manifold.

17. Open the four Isolation Ball Valves on the SmartPlate Water Heater.

18. Turn ON the Control Box POWER Switch to restart the SmartPlate Water Heater and

place it back in service using the start-up instructions in Chapter 5.

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Aerco SmartPlate User Manual Page 59

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