AERCO SmartPlate - Manual (Page 60)

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 8 – CORRECTIVE MAINTENANCE
Page 60 of 138 AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 OMM-0069_0E
PRI: 11/26/2013 Phone: 800-526-0288 SP-100
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 OFF the POWER Switch on the side of the ECS/SP Control Box.
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 Heater. 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. Remove
the 1/4” plug on the side of the Strainer 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 Heater, proceed to
step 6 to remove the installed Heat Exchanger.
6. Replace the 1/4” plug removed in step 4.
7. Using a ratchet wrench with an extension and a 3/4” deep socket, loosen, but do not
remove, the four (4) Victaulic couplings (Figure 8--3). Two (2) couplings are located on the
Domestic Water Side (Figure 8-3) and two (2) are located on the Boiler Water Side.