AERCO BMK 2000DF - Manual (Page 100)

Benchmark 1500DF - 2000DF Boilers
CHAPTER 7 – MAINTENANCE
Page 100 of 196 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0098_0A
04/01/2014 Ph.: 800-526-0288 GF-144
7.7 CONDENSATE DRAIN TRAP
Benchmark boilers 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 (see Figure 11). Maintenance is the same, except that the
newer style does not need an orifice gasket (Step 6).
9.
Figure 7-6: External Condensate Trap: Cutaway and Exploded Views
THUMB
SCREWS
COVER
GASKET
FLOAT
GUIDE
FLOAT
CONDENSATE
TRAP
(P/N 24060)
OUTLET
INLET
Thumb Screws
(4)
Condensate
Trap O-Ring
Float
Float Guide
O-Rings
(2)
3/4" NPT Port
3/4" NPT Port
Adapter
Opening