Benchmark 2.0 LN Installation, Operation & Maintenance Manual
CHAPTER 7 – MAINTENANCE
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AERCO International, Inc.
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100 Oritani Dr.
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06/18/2015
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GF-123
20. Be sure to align the igniter and flame detector tapped holes in the burner plate with the
heat exchanger top head.
21. Check to ensure that the grounding screw is installed.
7.7 CONDENSATE DRAIN TRAP
The Benchmark 2.0LN 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, if necessary, cleaned to ensure proper operation.
To inspect and clean the trap, proceed as follows:
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. Thoroughly clean the trap and float. Also inspect the drain piping for blockage. If the trap
cannot be thoroughly cleaned, replace the trap.
6. After the above items have been inspected and thoroughly cleaned, replace the float in
the condensate trap and replace the trap cover.
7. Reassemble all piping and hose connections to the condensate trap inlet and outlet.
Reconnect trap to exhaust manifold drain.
Figure 7-6: External Condensate Trap
