SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 8 – CORRECTIVE MAINTENANCE
8.4 SINGLE-WALL HEAT EXCHANGER REPLACEMENT
The heat exchanger used in each SmartPlate Single-Wall model is removed and replaced using
the following basic procedure:
1. Turn the POWER switch on the side of the ECS/SP Control Box to OFF.
2. Close all four of the Isolation Ball Valves (Figure 8-1).
3. Connect a hose to the Strainer on the Boiler Water side of the piping assembly (Figure 8-
2). Open the valve on the Strainer and drain the boiler water from the unit. It will be
necessary to loosen a Victaulic coupling by the heat exchanger to allow air into the pipe
during draining.
4. Next, connect a hose the Drain Valve on the DHW Side of the piping assembly and then
open the Relief Valve to allow air into the pipe during draining.
Figure 8-2. Draining the SmartPlate Water Heater
5. After the boiler water and domestic water have been drained from the unit, proceed to step
6 to remove the installed heat exchanger.
6. Close the Relief Valve opened in step 4.
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