Benchmark 2500 - 3000 Boilers
CHAPTER 7 – MAINTENANCE
Page
96
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204
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0094_0E
03/20/2014
Ph.: 800-526-0288
GF-137
7.7 CONDENSATE DRAIN TRAP
The Benchmark Boiler contains a condensate trap as shown in Chapter 2, Figure 2-5. The trap
is located external to the unit and attached to the drain pipe from the exhaust manifold. This trap
should be inspected and cleaned in accordance with the maintenance schedule shown in Table
7-1 to ensure proper operation. To inspect and clean the trap, proceed as follows:
Condensate Drain Trap Maintenance Procedure
1. Disconnect the external condensate trap by loosening the union pipe connection between
the trap and the exhaust manifold drain pipe.
2. Remove the connections on the inlet and outlet sides of the condensate trap shown in
Figure 7-6.
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 O-ring and orifice gaskets from the trap. AERCO recommends that these
items be replaced annually.
6. Thoroughly clean the trap and float. Also inspect the drain piping for blockage. If the trap
cannot be thoroughly cleaned, replace the trap.
7. After the above items have been inspected and thoroughly cleaned, replace the O-ring
(84017) and orifice gasket (81092) with new parts.
8. Reassemble all piping and hose connections to the condensate trap inlet and outlet.
Reconnect trap to exhaust manifold drain.
NOTE
T
here are two slightly different types of condensate traps that may
be used in your configuration; an older style with a separate inlet
adapter, and a newer style with a built-in adapter. Maintenance is
the same, except that the newer style does not need an orifice
gasket (Step 5).
Figure 7-6: External Condensate Trap: Cutaway and Exploded Views
