AERCO BMK 1.5 LN October 2012 - Manual (Page 88)

CHAPTER 7
MAINTENANCE
Page 88 of 166 AERCO International Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288 PR1:10/18/12
Benchmark 1.5LN Low NOx Boiler
Installation, Operation and Maintenance Manual
GF-120
OMM-0041 0E
AIR/FUEL
VALVE
BLOWER
IGNITOR-
INJECTOR
FLAME
DETECTOR
STAGED IGNITION
ASSEMBLY
BURNER GASKET
BURNER GASKET
BURNER
HEX HEAD SCREWS (4)
BLOWER
GASKET
BURNER
PLATE
BLOWER
PROOF
SWITCH
BLOCKED
INLET
SWITCH
GROUNDING
SCREW
Figure 7-4: Burner Assembly Exploded View
7.7 CONDENSATE DRAIN TRAP
The Benchmark 1.5 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.
NOTE
There are two slightly different types of condensate traps that may be used
in your configuration; an older style without an inlet adapter, and a newer
style with a built-in adapter (see Figure 7.5). Maintenance is the same,
except that the newer style does not need an orifice gasket (Step 6).
To inspect and clean the trap, proceed as follows:
Disconnect the external condensate trap by loosening the union pipe connection 1.
between the trap and the exhaust manifold drain pipe.
Remove the connections on the inlet and outlet sides of the condensate trap shown in 2.
Figure 7-5.
Loosen the four (4) thumbscrews securing the cover on the condensate trap. Remove 3.
the cover.
Remove the float from the condensate trap. 4.
Remove the orifice gasket from the trap. 5.