AERCO BMK 1.5 LN July 2011 - Manual (Page 16)

CHAPTER 2: INSTALLATION
Page 16 of 152 PR2: 05/09/12
Benchmark 1.5LN Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0D
GF-120
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
2.5 SUPPLY AND RETURN PIPING
The Benchmark 1.5 Boiler utilizes 3” 150# flanges for the water system supply and return piping
connections. The physical location of the supply and return piping connections are on the rear of the unit
as shown in Figure 2-3. Refer to Appendix F, Drawing AP-A-832 for additional dimensional data.
BOILER SUPPLY
3" – 150# FLANGED
CONNECTION
BOILER RETURN
3" – 150# FLANGED
CONNECTION
1-1/2”
GAS INLET
CONNECTION
SHELL DRAIN
VALVE
EXHAUST
MANIFOLD
REAR VIEW
Figure 2-3: Supply and Return Locations
2.6 CONDENSATE DRAIN
The Benchmark 1.5 Boiler is designed to condense water vapor from the flue products.
Therefore, the installation must have provisions for suitable condensate drainage or collection.
The condensate drain pipe located on the exhaust manifold (Figure 2-4) must be connected to a
condensate trap which is packed separately within the unit’s shipping container.
The procedure to install and connect the condensate drain is provided in paragraph 2.6.1.
EXHAUST
MANIFOLD
PARTIAL REAR VIEW
CONDENSATE DRAIN
CONNECTION
BOILER
RETURN
Figure 2-4: Condensate Drain Connection Location
Exhaust Manifold Condensate Drain 2.6.1
The exhaust manifold drain pipe connection shown in Figure 2-4, must be connected to a
condensate drain trap external to the unit.