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Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual
Burner Assembly Inspection and Maintenance Procedures - Continued
NOTE
The LOWER RELEASE
GASKET (P/N 81185) features
four tabs around its
81173 – UPPER RELEASE GASKET
81180 – MIDDLE BURNER GASKET
81185 – LOWER RELEASE GASKET
BARE
BURNER
INSTALLED
IN HEAT
EXCHANGER
ASSY.
Figure 7-5: Bare Burner and Replacement Gaskets Location
7.7 CONDENSATE DRAIN TRAP
The Benchmark Boiler contains a condensate trap as shown in Chapter 2, Figure 2-6. 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.
Currently, two styles of the condensate traps are in use. Both styles perform the same functions and
contain identical internal floats. However, the older style has a separate inlet adapter and the newer style
contains a built-in adapter. Refer to Figure 7-6. Maintenance tasks for both styles are basically identical,
however the older style does includes an orifice gasket under the float.
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 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) with a new part.
8. Reassemble all piping and hose connections to the condensate trap inlet and outlet.
Reconnect trap to exhaust manifold drain.
OMM-0099_0A
GF-145
CHAPTER 7 – MAINTENANCE
Use ALL THREE gaskets provided, even if there
periphery.
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
IMPORTANT!
is only one existing gasket being replaced.
Page 99 of 234
PR1: 05/21/2014
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