CHAPTER 2
INSTALLATION
Page 16 of 166 AERCO International Inc.
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100 Oritani Dr.
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Blauvelt, NY 10913
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Ph: 800-526-0288
PR1:10/18/12
Benchmark 1.5LN Low NOx Boiler
Installation, Operation and Maintenance Manual
GF-120
OMM-0041 0E
If installing a Combination Control Panel (CCP) system, it is important to identify the
Combination Mode Boilers in advance and place them in the proper physical location. Refer to
Chapter 5 for information on Combination Mode Boilers.
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.
